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Применить Всего найдено 34. Отображено 29.
06-10-2016 дата публикации

MASK BASED TONER REDUCTION

Номер: US20160291905A1
Автор: Sudhagar Subbaian, Deepthi Sidavanahalli Rao, SUBBAIAN SUDHAGAR, RAO DEEPTHI SIDAVANAHALLI, Subbaian Sudhagar, Rao Deepthi Sidavanahalli
Принадлежит: Xerox Corp

Systems and methods for reducing toner usage. A print job is received into a print engine. The print engine comprises a processor, and the print job comprises an image. A halftone screen is applied to the pixels of continuous image data for the image. The processor produces a threshold array of pixel values based on the halftone screen. The processor generates a mask based on the halftone screen for each color plane of the image. The processor applies the mask to the threshold array, creating a modified threshold array. The modified threshold array corresponds to relatively reduced toner usage for rendering the image.

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Номер записи: 1
23-05-2017 дата публикации

Methods and systems for estimating skew angle of an image

Номер: US0009659230B2
Автор: Sudhagar Subbaian, Sainarayanan Gopalakrishnan, Xing Li, Vignesh Doss, Clara Cuciurean-Zapan, SUBBAIAN SUDHAGAR, GOPALAKRISHNAN SAINARAYANAN, LI XING, DOSS VIGNESH, CUCIUREAN-ZAPAN CLARA, Subbaian Sudhagar, Gopalakrishnan Sainarayanan, Li Xing, Doss Vignesh, Cuciurean-Zapan Clara
Принадлежит: Xerox Corporation, XEROX CORP, XEROX CORPORATION

The disclosed embodiments illustrate methods and systems for estimating a skew angle of an image. The method includes identifying a set of measurable blocks from one or more blocks in said image. The method further includes dilating each measurable block, in said set of measurable blocks, with a predetermined regular structure to create a set of modified measurable blocks. The method further includes selecting a second set of measurable blocks from said set of modified measurable blocks based on a size of each modified measurable block in said set of modified measurable blocks. Thereafter, the method includes determining a slope of each measurable block in said second set of measurable blocks. Further, the slope is utilizable to estimate said skew angle of said image. The method is performed by one or more microprocessors.

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Номер записи: 2
13-06-2017 дата публикации

Image processing method and system for classification of halftone frequencies

Номер: US0009681023B1
Автор: Sudhagar Subbaian, Vignesh Doss, Sainarayanan Gopalakrishnan, SUBBAIAN SUDHAGAR, DOSS VIGNESH, GOPALAKRISHNAN SAINARAYANAN, Subbaian Sudhagar, Doss Vignesh, Gopalakrishnan Sainarayanan
Принадлежит: XEROX CORPORATION, XEROX CORP

The disclosed embodiments illustrate an image processing method and system for classification of halftone frequencies. Pixel values of a first pixel block in a binary image are converted into first pixel values. A second pixel block comprising second pixel values is generated, based on pixel shifting in the first pixel block by a pre-determined count. A frequency value for a pixel-of-interest in the first pixel block is determined, based on a count of a pre-specified type of third pixel values. Other plurality of frequency values for other pixels-of-interest in other plurality of first pixel blocks are estimated when a mode value, corresponding to a plurality of frequency values of pixels-of-interest in a plurality of first pixel blocks, exceeds a pre-determined threshold mode value. Based on the determined plurality of frequency values, one or more image processing operations on the binary image are performed.

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Номер записи: 3
20-07-2017 дата публикации

DETECTING SIZES OF DOCUMENTS SCANNED USING HANDHELD DEVICES

Номер: US20170208185A1
Автор: Sainarayanan Gopalakrishnan, Vignesh Doss, Sudhagar Subbaian, Dhevendra Alagan Palanivel, GOPALAKRISHNAN SAINARAYANAN, DOSS VIGNESH, SUBBAIAN SUDHAGAR, PALANIVEL DHEVENDRA ALAGAN, Gopalakrishnan Sainarayanan, Doss Vignesh, Subbaian Sudhagar, Palanivel Dhevendra Alagan
Принадлежит: Xerox Corporation

An electronic document image of a document is captured using a camera of a handheld device. A user interface of the handheld device displays an instruction to place the handheld device on the document and to change the magnification of the electronic document image on the user interface until the electronic document image and the document are the same size. The handheld device automatically determines the original size of the document based on the magnification that made the electronic document image and the document the same size when the handheld device was on the document. The handheld device converts the electronic document image into an original size document image file based on the original size of the document. 1. A handheld apparatus comprising:a processor;a camera operatively connected to said processor; anda user interface operatively connected to said processor,said camera capturing an electronic document image of a physical document through user operation,said user interface displaying an instruction to place said handheld apparatus on said physical document and to change the magnification of said electronic document image on said user interface while said handheld apparatus is resting on said physical document until said electronic document image and said physical document are the same size,said processor determining the original size of said physical document based on said magnification to make said electronic document image and said physical document the same size when said handheld apparatus is on said physical document, andsaid processor converting said electronic document image into an original-size document image file based on said original size of said physical document.2. The handheld apparatus according to claim 1 , after said camera capturing said electronic document image claim 1 , said user interface displaying said electronic document image and displaying an instruction to define corners of said physical document in said electronic document ...

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Номер записи: 4
02-05-2017 дата публикации

Method and system for compressing and converting an image during printing

Номер: US0009641724B1
Автор: Dhevendra Alagan Palanivel, Sainarayanan Gopalakrishnan, Xing Li, Sudhagar Subbaian, PALANIVEL DHEVENDRA ALAGAN, GOPALAKRISHNAN SAINARAYANAN, LI XING, SUBBAIAN SUDHAGAR, Palanivel Dhevendra Alagan, Gopalakrishnan Sainarayanan, Li Xing, Subbaian Sudhagar
Принадлежит: XEROX CORPORATION, XEROX CORP

A method and a system for image compression are disclosed. An image is converted to a halftoned image. The one or more halftoned lines in the halftoned image comprise one or more pixels. A first transformed image is generated from the halftoned image based on shifting of the one or more pixels, associated with the one or more halftoned lines in the halftoned image, by a first value. A second transformed image is generated from the first transformed image based on shifting of the one or more pixels, associated with the one or more halftoned lines in the first transformed image, by a second value. Further, a compressed image is generated based on compression of the second transformed image. The compressed image is stored in a storage device. Another method and system for image conversion are disclosed that converts the compressed image back to the first transformed image.

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Номер записи: 5
23-01-2018 дата публикации

Saving marking material using threshold arrays and toner reduction mask

Номер: US0009876937B1
Автор: Sudhagar Subbaian, Sainarayanan Gopalakrishnan, SUBBAIAN SUDHAGAR, GOPALAKRISHNAN SAINARAYANAN, Subbaian Sudhagar, Gopalakrishnan Sainarayanan
Принадлежит: Xerox Corporation, XEROX CORP

Methods and devices create a first halftone image and a different second halftone image from a continuous tone image. A third halftone image is produced by identifying pixels that are common to both the first and second halftone images. A toner reduction mask is applied to the third halftone image to produce a fourth halftone image (the fourth halftone image has only holes and remaining ones of the common pixels). The holes are added to the first halftone image to create a reduced-toner halftone image. Further, edges of features within the continuous tone image are detected (to identify edge pixels of the edge features) and such edge pixels are added to the reduced-toner halftone image to produce a print-ready halftone image. Finally, such methods print the print-ready halftone image on print media.

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Номер записи: 6
12-12-2017 дата публикации

System for automated text and halftone segmentation

Номер: US0009842281B2
Автор: Sudhagar Subbaian, Sainarayanan Gopalakrishnan, Xing Li, Clara Cuciurean-Zapan, SUBBAIAN SUDHAGAR, GOPALAKRISHNAN SAINARAYANAN, LI XING, CUCIUREAN-ZAPAN CLARA, Subbaian Sudhagar, Gopalakrishnan Sainarayanan, Li Xing, Cuciurean-Zapan Clara
Принадлежит: Xerox Corporation, XEROX CORP

A method and system for segmenting text from non-text portions of a digital image using the size, solidity, and run length characteristics of connected components within the image data. For a connected component comprising a rectangular group of pixels enclosing a set of connected pixels having the same binary state, the size characteristic may be based on a ratio of height to width of the connected component and the total number of pixels within the connected component, the solidity characteristic may be based on a ratio of pixels within the connected component to a total number of pixels within a convex hull of the set of connected pixels, and the run length characteristic may be based on a number of transitions within the connected component.

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Номер записи: 7
23-02-2017 дата публикации

METHODS AND SYSTEMS FOR ESTIMATING SKEW ANGLE OF AN IMAGE

Номер: US20170053184A1
Автор: Sudhagar Subbaian, SAINARAYANAN GOPALAKRISHNAN, XING LI, Vignesh Doss, CLARA CUCIUREAN-ZAPAN, SUBBAIAN SUDHAGAR, GOPALAKRISHNAN SAINARAYANAN, LI XING, DOSS VIGNESH, CUCIUREAN-ZAPAN CLARA, Subbaian Sudhagar, Doss Vignesh
Принадлежит: Xerox Corp

The disclosed embodiments illustrate methods and systems for estimating a skew angle of an image. The method includes identifying a set of measurable blocks from one or more blocks in said image. The method further includes dilating each measurable block, in said set of measurable blocks, with a predetermined regular structure to create a set of modified measurable blocks. The method further includes selecting a second set of measurable blocks from said set of modified measurable blocks based on a size of each modified measurable block in said set of modified measurable blocks. Thereafter, the method includes determining a slope of each measurable block in said second set of measurable blocks. Further, the slope is utilizable to estimate said skew angle of said image. The method is performed by one or more microprocessors.

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Номер записи: 8
10-01-2017 дата публикации

Mask based toner reduction

Номер: US0009542130B2
Автор: Sudhagar Subbaian, Deepthi Sidavanahalli Rao, SUBBAIAN SUDHAGAR, RAO DEEPTHI SIDAVANAHALLI, Subbaian Sudhagar, Rao Deepthi Sidavanahalli
Принадлежит: Xerox Corporation, XEROX CORP

Systems and methods for reducing toner usage. A print job is received into a print engine. The print engine comprises a processor, and the print job comprises an image. A halftone screen is applied to the pixels of continuous image data for the image. The processor produces a threshold array of pixel values based on the halftone screen. The processor generates a mask based on the halftone screen for each color plane of the image. The processor applies the mask to the threshold array, creating a modified threshold array. The modified threshold array corresponds to relatively reduced toner usage for rendering the image.

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Номер записи: 9
07-02-2017 дата публикации

Method and system for image processing

Номер: US0009563961B1
Автор: Rajasekar Kanagasabai, Sainarayanan Gopalakrishnan, Xing Li, Clara Cuciurean-Zapan, Sudhagar Subbaian, KANAGASABAI RAJASEKAR, GOPALAKRISHNAN SAINARAYANAN, LI XING, CUCIUREAN-ZAPAN CLARA, SUBBAIAN SUDHAGAR, Kanagasabai Rajasekar, Gopalakrishnan Sainarayanan, Li Xing, Cuciurean-Zapan Clara, Subbaian Sudhagar
Принадлежит: Xerox Corporation, XEROX CORP, XEROX CORPORATION

A method and an application server are provided for processing an image. The application server comprising an image processing unit processes an image by segmenting into first segmented layer and a second segmented layer. The image processing unit identifies one or more regions in the first segmented layer and for a coordinate in the identified region a vicinity check condition is performed in the second segmented layer. The image processing unit compares a first size of identified region with at least an average size of the set of text components in the second segmented layer. Further, the image processing unit merges the identified region with the second segmented layer to get a processed image.

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Номер записи: 10
13-06-2017 дата публикации

Methods and systems facilitating generation of digital representations of objects

Номер: US0009681013B2
Автор: Sainarayanan Gopalakrishnan, Sudhagar Subbaian, Dhevendra Alagan Palanivel, Anand Arokia Raj Antony Muthu Rayar, GOPALAKRISHNAN SAINARAYANAN, SUBBAIAN SUDHAGAR, PALANIVEL DHEVENDRA ALAGAN, RAYAR ANAND AROKIA RAJ ANTONY MUTHU, Gopalakrishnan Sainarayanan, Subbaian Sudhagar, Palanivel Dhevendra Alagan, Rayar Anand Arokia Raj Antony Muthu
Принадлежит: Xerox Corporation, XEROX CORP, XEROX CORPORATION

Disclosed herein is a system, method and computer implemented method of facilitating generation of a digital representation of one or more physical objects. The method may include scanning a first part of the one or more physical objects to obtain image data corresponding to the first part. The scanning may be performed based on a first set of values corresponding to one or more parameters. The image data corresponding to the first part may be a digital representation of the first part. The method may further include determining a size of image data corresponding to the first part. Additionally, the method may include displaying information based on the size of the image data corresponding to the first part, prior to receiving image data corresponding to a second part of the one or more physical objects.

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Номер записи: 11
03-01-2019 дата публикации

FRAMEWORK FOR REDUCING TONER UTILIZATION BY CONTROLLING TONER INTENSITY

Номер: US20190004743A1
Автор: ANNAMALAI Dhanasekar, GOPALAKRISHNAN Sainarayanan, SUBBAIAN Sudhagar
Принадлежит:

Disclosed is a method, system, and program for reducing toner in an image comprised of raster pel data. A toner saving tag (TST) can be embedded that causes a printing apparatus to process the submission through a regular print path without any post-processing and to reduce toner usage by controlling the energy applied to a light emitting source to create a latent image on a photoreceptor. Further, the method and system applies under certain circumstances both post-processing toner saving mode using pixel elimination and toner saving mode that controls the energy applied to create the latent image while maintaining pixel integrity. 1. A method for reducing toner consumption in a printing system , the method comprising:using a storage unit with an output value for different patterns of pixel data, where each output value indicates a pulse width power to charge a region of an image bearing member at the printing system;receiving a print job into the printing system comprising a processor, the processor being specialized for processing image data, the print job comprising an image;sensing whether a tag that represents a toner saving mode is embedded in the image;wherein the tag is added to the print job during creation of a document forming the print job, added to the print job by a document manager, or added to the print job by a user using a local user interface at the print system;in response to the embedded tag, then automatically updating the output value for different patterns of pixel data in the storage unit; andcontrolling an exposure device using the output value for different patterns of pixel data in the storage unit to create at least one latent image at the image bearing member;wherein controlling the exposure device reduces applied energy to create the at least one latent image while maintaining number of pixels of the received image.2. The method according to claim 1 , wherein the receiving the print job further comprising:receiving a PDL file;parsing ...

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Номер записи: 12
07-04-2016 дата публикации

METHODS AND SYSTEMS FOR PROCESSING DOCUMENTS

Номер: US20160098596A1
Автор: Doss Vignesh, GOPALAKRISHNAN Sainarayanan, Kanagasabai Rajasekar, Li Xing, SUBBAIAN Sudhagar
Принадлежит:

Methods and systems for classifying a region of interest in an electronic document. A first region from the electronic document is extracted. The first region includes at least the region of interest. A first projection profile of pixels is determined in the region of interest. The first projection profile of pixels is indicative of a presence of a content in the region of interest. The region of interest is classified in at least one category based on a comparison of the first projection profile with a predetermined projection profile associated with the region of interest. 1. A method for classifying a region of interest in an electronic document , the method comprising:extracting, by one or more processors, a first region from said electronic document, wherein said first region comprises at least said region of interest;determining, by said one or more processors, a first projection profile of pixels in said region of interest, wherein said first projection profile is indicative of a presence of a content in said region of interest; andclassifying, by said one or more processors, said region of interest in at least one category based on a comparison of said first projection profile with a predetermined projection profile associated with said region of interest.2. The method of claim 1 , wherein said at least one category corresponds to a manual extraction of said content from said region of interest or an automated extraction of said content from said region of interest.3. The method of further comprising transmitting claim 2 , by said one or more processors claim 2 , said classified region of interest to a user for said manual extraction based on the classification.4. The method of further comprising notifying claim 3 , by said one or more processors claim 3 , a user when a predetermined number of said region of interests in said electronic document are classified for said manual extraction.5. The method of claim 1 , wherein said first region comprises a ...

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Номер записи: 13
20-04-2017 дата публикации

Methods and systems facilitating generation of digital representations of objects

Номер: US20170111530A1
Автор: Anand Arokia Raj Antony Muthu Rayar, Dhevendra alagan Palanivel, Sainarayanan Gopalakrishnan, Sudhagar Subbaian
Принадлежит: Xerox Corp

Disclosed herein is a system, method and computer implemented method of facilitating generation of a digital representation of one or more physical objects. The method may include scanning a first part of the one or more physical objects to obtain image data corresponding to the first part. The scanning may be performed based on a first set of values corresponding to one or more parameters. The image data corresponding to the first part may be a digital representation of the first part. The method may further include determining a size of image data corresponding to the first part. Additionally, the method may include displaying information based on the size of the image data corresponding to the first part, prior to receiving image data corresponding to a second part of the one or more physical objects.

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Номер записи: 14
26-04-2018 дата публикации

Method and system for optical character recognition (ocr) of multi-language content

Номер: US20180114085A1
Автор: Rajasekar Kanagasabai, Sainarayanan Gopalakrishnan, Sudhagar Subbaian
Принадлежит: Xerox Corp

A method and system are provided for optical character recognition (OCR) of multi-language content. The method includes extracting a text portion from an image received from a user-computing device. The text portion comprises a plurality of keywords associated with a plurality of languages. The method further includes segmenting the plurality of keywords into a plurality of layers. Each layer of the plurality of layers comprises one or more keywords which are associated with a language. The method further comprise generating an OCR output of each of the plurality of layers based on the language associated with the one or more keywords in each of the plurality of layers. The method further comprises generating an electronic document of the received image based on the generated OCR output of each of the plurality of layers. The method further includes transmitting the generated electronic document to the user-computing device.

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Номер записи: 15
28-05-2015 дата публикации

Connected component analysis with multi-thresholding to segment halftones

Номер: US20150146261A1
Автор: Clara Cuciurean-Zapan, Sainarayanan Gopalakrishnan, Sudhagar Subbaian, Vignesh Doss, Xing Li
Принадлежит: Xerox Corp

Methods and systems receive an input image into a computerized device, create different binary images by applying different threshold measures to the input image using the computerized device, and identify components of a first binary image of the binary images using the computerized device. Such methods and systems also compare pixels of each of the components of the first binary image with corresponding pixels of a second binary image of the binary images to identify pixel differences using the computerized device. This allows these methods and systems to identify halftone areas within the input image based on the pixel differences exceeding a limit using the computerized device.

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Номер записи: 16
18-09-2014 дата публикации

INDIVIDUALIZING REDUCTION OF ORIGINAL PAGES IN N-UP COPYING OR PRINTING

Номер: US20140268185A1
Автор: Cuciurean-Zapan Clara, GOPALAKRISHNAN Sainarayanan, Li Xing, SUBBAIAN Sudhagar
Принадлежит: XEROX CORPORATION

In response to N-up instructions methods and systems analyze the sizes of printable items within full-size pages to be printed, and determine the minimum size to which each of the full-size pages can be reduced to keep all the printable items above a minimum print item or font size. Because different pages of the print/copy job can have differently sized printable items, at least two of the full-size pages can have a different minimum size to which they can be reduced. Such methods and systems automatically reduce the sizes of the full-size pages (as limited by each potentially different minimum size of each different full-size page) to produce reduced-size pages that will be combined on output pages. Again, because each different full-size page can have a different minimum size, at least two of the full-size pages can be reduced by different reduction amounts during the reduction process. 1. A method comprising:receiving, into a computerized device, a job for printing on sheets of media, said job containing full-size pages, said sheets of media having a uniform size, and said job containing initial instructions to print each of said full-size pages on a single sheet of said sheets of media;receiving, into said computerized device, secondary instructions to combine at least two of said full-size pages on at least one sheet of said sheets of media;automatically analyzing sizes of printable items within said full-size pages, using said computerized device;automatically determining a minimum size to which each of said full-size pages can be reduced to keep all said printable items above a minimum print item size, using said computerized device;automatically reducing sizes of said full-size pages as limited by each said minimum size to produce reduced-size pages, using said computerized device;automatically combining said reduced-size pages onto secondary pages as limited by said uniform size of said sheets of media, using said computerized device, at least two of said ...

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Номер записи: 17
02-08-2018 дата публикации

Systems and methods for creating multi-layered optical character recognition (ocr) documents

Номер: US20180217973A1
Автор: Rajasekar Kanagasabai, Sainarayanan Gopalakrishnan, Sudhagar Subbaian
Принадлежит: Xerox Corp

The present disclosure discloses methods and systems for creating a multi-layered Optical Character Recognition (OCR) document, the multi-layered OCR document facilitates selection of the desired text from the multi-layered OCR document. The method includes receiving a scanned image corresponding to a document, the document includes text information. A binary image is generated from the scanned image. Then, a morphological dilation operation is performed to create one or more text groups, using a horizontal structuring element and a vertical structuring element. Thereafter, OCR operation is applied on each text group to generate a corresponding OCR layer. The one or more OCR layers are then combined while creating a multi-layered OCR document. Finally, the combined OCR layers are superimposed as invisible text layers over the scanned image to create the multi-layered OCR document.

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Номер записи: 18
22-11-2018 дата публикации

METHODS AND SYSTEMS FOR ADDING NEW CONTENT IN AN ELECTRONIC DOCUMENT GENERATED BY SCANNING

Номер: US20180336444A1
Автор: Ramasamy Mahesh, SUBBAIAN Sudhagar
Принадлежит:

Disclosed herein are methods and systems for adding content in a page of an electronic document without moving current content to a next page of the electronic document. A first electronic document, a position information of a page of the first electronic document where a new content need to be added, and at least one of the new content and a second electronic document including the new content are received at an MFD. A required space for adding the new content and an available space between lines of the page are estimated. The available space and the required space are compared to check whether the available space is more than the required space. Based on the comparison, the lines of the page are re-positioned, and the new content is added on the page based on the position information to generate an updated first electronic document including the added new content. 1. A method for adding content in at least one page of an electronic document without moving current content to a next page of the electronic document , the method comprising:receiving a first electronic document;receiving at least one position information of a page of the first electronic document where a new content need to be added;receiving at least one of the new content and a selection of a second electronic document comprising the new content from a user;estimating a required space comprising one or more pixels required for adding the new content based on the new content;estimating an available space comprising a plurality of pixels available between a plurality of lines present in the page of the first electronic document;comparing the available space with the required space to check whether the available space is more than the required space;re-positioning the plurality of lines of the page to make space for the new content when the available space is more than the required space according to the at least one position information; andadding the new content on the page of the first electronic ...

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Номер записи: 19
15-10-2020 дата публикации

METHODS AND SYSTEMS FOR AUTOMATIC FILLING OF COLORS IN OUTLINE IMAGES AT A MULTI-FUNCTION DEVICE

Номер: US20200329176A1
Автор: BINDANA Srinivasarao, SUBBAIAN Sudhagar
Принадлежит:

There is provided a method for filling at least one color in one or more outline images at a multi-function device. The method includes providing a user interface for displaying a color fill option. Based on receiving a selection of the color fill option, a file including at least one outline image is received by a controller. The at least one outline image includes at least one image field. Then, it is identified by an image processor, if the at least one image field includes at least one color marking. Based on the identification, the at least one image field is automatically filled by the image processor according to the at least one color marking to generate a color filled image. 1. A method for filling at least one color in one or more outline images at a multi-function device , comprising:providing, at the multi-function device, a user interface for displaying a color fill option, wherein the color fill option comprises an auto fill option and a manual fill option;based on receiving a selection of the color fill option, receiving, by the multi-function device, a file comprising at least one outline image, wherein the at least one outline image comprising at least one image field;identifying, by the multi-function device, that the at least one image field comprises at least one color marking, wherein the at least one image field comprising the at least one color marking is marked using a particular color; andbased on the identification, automatically filling, by the multi-function device, the at least one image field of the outline image according to the at least one color marking, to generate a color filled image, wherein the automatically filling of the at least one image field is performed at the multi-function device without requiring an external computing device, and wherein the multi-function device is operative to perform at least printing of the color filled image.2. The method of further comprising receiving claim 1 , by the multi-function device claim ...

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Номер записи: 20
10-12-2015 дата публикации

SYSTEM FOR AUTOMATED TEXT AND HALFTONE SEGMENTATION

Номер: US20150356740A1
Автор: Cuciurean-Zapan Clara, GOPALAKRISHNAN Sainarayanan, Li Xing, SUBBAIAN Sudhagar
Принадлежит:

A method and system for segmenting text from non-text portions of a digital image using the size, solidity, and run length characteristics of connected components within the image data. For a connected component comprising a rectangular group of pixels enclosing a set of connected pixels having the same binary state, the size characteristic may be based on a ratio of height to width of the connected component and the total number of pixels within the connected component, the solidity characteristic may be based on a ratio of pixels within a convex hull of the set of connected pixel to a total number of pixels within the connected component, and the run length characteristic may be based on a number of transitions within the connected component. 1. A method for segmenting a text region from a pictorial region within a scanned image comprising:scanning a document to obtain scanned image data representing the document;generating a binary image from the scanned image data, wherein the binary image comprises a two dimensional array of pixels and where a value of the pixel corresponds to the pixel being one of an ON pixel and an OFF pixel;identifying a connected component within the binary image, the connected component comprises a group of pixels enclosing a set of connected pixels having the same value;determining at least two of a size label, a solidity label, and run length label for the connected component, wherein each of the size label, the solidity label, and the run length label identifies the connected component as being either a text area or a non-text area, and where the connected component corresponds to a text component if the at least two of the size label, the solidity label, and the run length label identify the connected component as being a text component; andclassifying the connected component as a text region within the scanned image when the connected component is identified as being a text component.2. The method of claim 1 , wherein the size label ...

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Номер записи: 21
06-07-2021 дата публикации

Methods and systems for automatic filling of colors in outline images at a multi-function device

Номер: US11055886B2
Автор: Srinivasarao Bindana, Sudhagar Subbaian
Принадлежит: Xerox Corp

There is provided a method for filling at least one color in one or more outline images at a multi-function device. The method includes providing a user interface for displaying a color fill option. Based on receiving a selection of the color fill option, a file including at least one outline image is received by a controller. The at least one outline image includes at least one image field. Then, it is identified by an image processor, if the at least one image field includes at least one color marking. Based on the identification, the at least one image field is automatically filled by the image processor according to the at least one color marking to generate a color filled image.

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Номер записи: 22
13-09-2023 дата публикации

System and apparatus suitable for improving positional data accuracy, and a processing method in association thereto

Номер: GB2616412A
Автор: Mukhopadhyay Shilpa, Singh Brajraj, SUBBAIAN Sudhagar
Принадлежит: Continental Automotive Technologies GmbH

There is provided a processing method in association with a vehicle. The processing method can include a receiving step and a processing step. The receiving step can include receiving at least one input signal. The input signal(s) can include vehicle data indicative of path of travel of the vehicle and positional data. The processing step can include processing the received input signal(s) to generate at least one output signal. Based on the vehicle data, when path of travel of the vehicle is determined to be circular, the input signal is processable in a manner such that the output signal is indicative that vehicle coordinates associated with the vehicle correspond to the positional data. Based on the vehicle data, when path of travel of the vehicle is determined to be non-circular, the input signal is processable by manner of adjustment-based processing to produce at least one output signal corresponding to adjusted positional data.

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Номер записи: 23
10-05-2016 дата публикации

Systems and methods for rule-based thin-line enhancement in halftone images

Номер: US9338324B1
Автор: Sudhagar Subbaian
Принадлежит: Xerox Corp

Embodiments of a computer-implemented method for thin-line enhancement in electronic images are disclosed. The methods include receiving a halftone image comprising multiple pixels, and associating a predefined kernel with at least a portion of the halftone image. The kernel includes multiple check cells and a processing cell, each capable of being toggled between an active state and an inactive state; detecting a state of each of the pixels in the neighborhood of an inactive pixel associated with the processing cell based on one or more predetermined rules being applied to the kernel, wherein the inactive pixel is in communication with a contiguous set of active pixels; and selectively activating the inactive pixel by activating the processing cell based on the predetermined rules, provided the inactive pixel upon being activated is separated from a neighboring active pixel.

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Номер записи: 24
29-05-2024 дата публикации

Method for determining camera pose information, camera system and vehicle

Номер: GB2624651A
Автор: Gupta Divanshu, Narasimhaiah Naveenkumar, SUBBAIAN Sudhagar
Принадлежит: Continental Autonomous Mobility Germany GmbH

The invention relates to a method for determining camera pose information. A target chart 1 (Fig. 1) arranged in a horizontal plane is provided, wherein the target plate comprises a frame shape 2 (Fig.1) and a plurality of marker shapes 3 (Fig.1) arranged within the border. An image 5 is obtained by a camera, wherein the target chart 1 is within the field of view of the image. An imaged target chart 6 is localized within the image and imaged marker shapes 8 that are arranged within an imaged frame shape 7 of the imaged target chart are extracted. The number of extracted imaged marker shapes is counted and it is determined whether it is equal to the number of marker shapes within the frame shape . In response to determining that the two quantities are equal, centroids of each of the imaged marker shapes are computed and the camera pose information is determined based on the computed centroids. The markers may be circles. SIFT, SURF, ORB or Otsu’s method may be employed. Centroid distances may be computed with the gradient descent method. The camera may be on a vehicle.

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Номер записи: 25
07-09-2023 дата публикации

System and apparatus suitable for improving positional data accuracy, and a processing method in association thereto

Номер: WO2023165860A1
Автор: Brajraj SINGH, Shilpa MUKHOPADHYAY, Sudhagar Subbaian
Принадлежит: Continental Automotive Technologies GmbH

There is provided a processing method in association with a vehicle. The processing method can include a receiving step and a processing step. The receiving step can include receiving at least one input signal. The input signal(s) can include vehicle data indicative of path of travel of the vehicle and positional data. The processing step can include processing the received input signal(s) to generate at least one output signal. Based on the vehicle data, when path of travel of the vehicle is determined to be circular, the input signal is processable in a manner such that the output signal is indicative that vehicle coordinates associated with the vehicle correspond to the positional data. Based on the vehicle data, when path of travel of the vehicle is determined to be non-circular, the input signal is processable by manner of adjustment-based processing to produce at least one output signal corresponding to adjusted positional data.

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Номер записи: 26
18-09-2018 дата публикации

System and method for halftoning in a print system

Номер: US10079960B1
Автор: Sainarayanan Gopalakrishnan, Sudhagar Subbaian
Принадлежит: Xerox Corp

A print system may include a print engine, a processing device and programming instructions to halftone an electronic document to be printed. The system may receive an input image representing the electronic document to be printed, use a first and second threshold array, which are flipped to each other, to halftone the input image to generate a first and second set of data, respectively, then combine the first and second set of data to generate a halftoned image. In combining the first and second set of data, each dot in the halftoned image may represent full saturation if the corresponding dot in at least one of the first and second set of data represents full saturation, or white if the corresponding dots in both the first and second set of data are white. The system may use the same halftoning method for a monochrome or color document.

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Номер записи: 27
15-05-2018 дата публикации

Methods and devices for enhancing edges of a graphic object

Номер: US09973654B1
Автор: Dhevendra alagan Palanivel, Sainarayanan Gopalakrishnan, Sudhagar Subbaian
Принадлежит: Xerox Corp

The present disclosure discloses methods and systems (a multi-function device or a digital printer) having capabilities for an object enhancement. In an example, the MFD includes a digital front end module to detect edge of the object and direction of the edge. Following the detection of the edge, the digital front end module classify the pixels of the edge into two categories, for example, which define that whether the edge pixels are created by black-to-white transition or white-to-black transition. Based on the classification of the edge pixels, the digital front end module performs the object enhancement either in black-to-white transition or in white-to-black transition.

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Номер записи: 28
18-07-2017 дата публикации

Detecting sizes of documents scanned using handheld devices

Номер: US09712697B1
Автор: Dhevendra alagan Palanivel, Sainarayanan Gopalakrishnan, Sudhagar Subbaian, Vignesh Doss
Принадлежит: Xerox Corp

An electronic document image of a document is captured using a camera of a handheld device. A user interface of the handheld device displays an instruction to place the handheld device on the document and to change the magnification of the electronic document image on the user interface until the electronic document image and the document are the same size. The handheld device automatically determines the original size of the document based on the magnification that made the electronic document image and the document the same size when the handheld device was on the document. The handheld device converts the electronic document image into an original size document image file based on the original size of the document.

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Номер записи: 29