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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 13. Отображено 13.
04-08-2023 дата публикации

Reversible data hiding method based on block adaptive coding and bit stream compression

Номер: CN116546201A
Автор: SUI LIANSHENG, SUN JINGDAN, XIAO ZHAOLIN, WANG ZHANMIN
Принадлежит:

The invention discloses a reversible data hiding method based on block adaptive coding and bit stream compression, which comprises the following steps of: 1) reading pixel information in an original image, dividing the original image into non-overlapped blocks with the same size, sequentially comparing 8-bit binary information of all pixels in each block from the most significant bit to the seventh significant bit, stopping comparison until the bits of the binary information of a certain bit plane of the pixels in the block are different and are not all-zero and all-one; 2) obtaining a block type table; 3) carrying out block coding; 4) setting a position map to mark the blocks of the type; 5) encrypting the image; 6) data encryption; 7) embedding data; and 8) data extraction and image restoration. According to the method, the problem of high complexity of a high-order surface is well solved, more embeddable space is vacated, and an original image can be restored in a lossless manner.

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Номер записи: 1
11-07-2023 дата публикации

Transform-based indoor weak and small target detection method

Номер: CN116416511A
Автор: LI ZHANGQI, JIN HAIYAN, WANG BIN, XIAO ZHAOLIN, SU HAONAN, PAN ZHIGENG
Принадлежит:

The invention discloses an indoor weak and small target detection method based on Transform. A DFE module and an algorithm are used to solve the problem that a small target far away from a monitoring position in a classroom is difficult to detect. A TFE module based on Transform is used, deep information of an image is extracted through the Transform pair, a multi-head self-attention module is used, the calculated amount is reduced, meanwhile, the defects that a convolutional network lacks long-distance modeling and does not have the capacity of obtaining global information are overcome, and target feature information is better extracted. According to the indoor weak and small target detection method based on Transform, a large number of experiments are carried out on the created classroom data set, and the result shows that the network model established by the method is greatly improved in the aspects of indoor weak and small target detection precision and reasoning time.

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Номер записи: 2
25-03-2015 дата публикации

Light field collecting device with changeable angle sampling number

Номер: CN104469110A
Автор: WANG QING, ZHANG CHUNPING, ZHOU GUOQING, HAN SHU, XIAO ZHAOLIN
Принадлежит:

The invention provides a light field collecting device with the changeable angle sampling number. A plurality of micro lenses are evenly distributed to form a micro lens array, and a photosensitive surface of an image sensor is completely covered; a moving tray embedded in a sliding rail is used for fixing the micro lens array and can move back and forth between the main lens and the image sensor in the light axis direction of the image sensor. A micro lens distance adjusting ring is coupled precisely with a tray pushing rod, when the micro lens distance adjusting ring rotates, the tray pushing rod drives the moving tray to move in the light axis direction of the image sensor, and two springs are connected between the moving tray and a camera. A digital displacement sensor is fixedly connected with the tray pushing rod to sense the displacement changes of the lens array and transmit the displacement changes into a digital control unit. The light field collecting device can continuously ...

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Номер записи: 3
27-08-2021 дата публикации

Processing device for preventing sticking phenomenon of breathable belt

Номер: CN214059379U
Автор: XIAO ZHAOLIN, GUAN XIAODI, YE GUANGJIAN, WANG WEI, 肖兆麟, 官小弟, 叶光键, 王炜
Принадлежит: FUREN WOOD IND FUZHOU CO LTD, FUREN WOOD INDUSTRY (FUZHOU) CO., LTD., 福人木业（福州）有限公司

The utility model relates to the technical field of adhesive tape processing, in particular to a processing device for preventing a breathable tape from being adhered, which comprises a case. According to the non-setting adhesive rapid forming machine, the feeding roller and the discharging roller are arranged in the machine box, conveying of the breathable belt can be achieved, the breathable belt can be cooled through the ventilation pipe arranged at the bottom of the equipment box under the support of the air pump, non-setting adhesive is rapidly formed, and the situation that the breathable belt adheres to the non-setting adhesive during rolling is avoided; the arranged water tank can achieve cooling of cooling water on a semiconductor chilling plate, then the heat exchange box is used for cooling air pumped in by the air pump, rapid cooling of the breathable belt is achieved, an infrared temperature sensor is arranged on a right side panel of the equipment box, the temperature of the ...

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Номер записи: 4
07-04-2023 дата публикации

Finger flexibility detection algorithm based on finger tapping time sequence characteristics

Номер: CN115937973A
Автор: JIN HAIYAN, DING JIANXING, REN YAN, XIAO ZHAOLIN, SU HAONAN, WANG BIN, PAN ZHIGENG
Принадлежит:

The invention discloses a finger flexibility detection algorithm based on finger tapping time sequence characteristics, which comprises the following steps of: firstly, selecting a common subject and a subject with impaired hand motion function as photographed persons, designing a specific simulation scene, and collecting the time when a finger taps a keyboard and the time when a video starts to be collected; then, based on a time point sequence of clicking the keyboard by a finger, extracting a time sequence characteristic of clicking by the finger; removing redundant data in the time sequence characteristic data, and processing the rest of data to enable the number of samples in each time data sequence to be the same; and a CNN feature extraction module is introduced into the SVM, a CNN-SVM model is constructed, and the CNN-SVM model is used to classify the processed time sequence feature data. The problem that a finger flexibility detection method in the prior art is not accurate enough ...

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Номер записи: 5
27-08-2021 дата публикации

Energy-saving uniform material distributing device for shaving board production

Номер: CN214059244U
Автор: QIU SHENGHUA, XIAO ZHAOLIN, YE GUANGJIAN, ZHANG BICHENG, 邱胜华, 肖兆麟, 叶光键, 张必诚
Принадлежит: FUREN WOOD IND FUZHOU CO LTD, FUREN WOOD INDUSTRY (FUZHOU) CO., LTD., 福人木业（福州）有限公司

The utility model relates to the technical field of shaving board processing, in particular to an energy-saving uniform material distributing device for shaving board production, which comprises a material distributing box and a material distributing barrel, a base is arranged at the bottom of the material distributing box, the top of the base is an inclined surface which is sequentially inclined downwards from left to right, and rubber springs are arranged at four corners of the inclined surface of the material distributing box. The material distribution box is fixedly arranged on the rubber spring, at least two sets of material distribution chambers are sequentially arranged in the material distribution box from top to bottom, and a material distribution barrel inserted into the material distribution box is arranged at the left end of the material distribution box. According to the material distributing device, the material distributing barrel is arranged at the left end of the material ...

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Номер записи: 6
23-06-2023 дата публикации

Weak light enhancement method based on ConvGRU fusion and weight adaptation

Номер: CN116309214A
Автор: JIN HAIYAN, YANG YUE, SU HAONAN, WANG BIN, XIAO ZHAOLIN, CAI LEI
Принадлежит:

The invention discloses a weak light enhancement method based on ConvGRU fusion and weight adaptation, and the method comprises the steps: fusing a convolution local feature with a Transform-based global representation in an interactive manner through feature aggregation gating (ConvGRU), maintaining the local feature and the global representation to the greatest extent, carrying out the image reconstruction through FR, and carrying out the weight adaptation. The method can accurately describe the detail features of input infrared and visible light to realize weak light image enhancement, and adaptively adjust the weight of a loss function by adding the weight adaptive loss function, so as to constrain the network to achieve an optimal fusion result.

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Номер записи: 7
21-07-2023 дата публикации

Coordinate axis segmentation-based reversible information hiding method for encrypted 3D (three-dimensional) grid

Номер: CN116467725A
Автор: SUI LIANSHENG, ZHANG PENGFEI, XIAO ZHAOLIN, WANG ZHANMIN
Принадлежит:

The invention discloses an encrypted 3D grid reversible information hiding method based on coordinate axis segmentation, and the method specifically comprises the steps: reading an original 3D grid file, obtaining the floating-point number coordinate information of each vertex, carrying out the preprocessing of the floating-point number coordinate information, and obtaining a long binary bit stream of each vertex; judging the quadrant to which the current vertex belongs according to the long binary bit stream of each vertex, dividing the vertexes in the same quadrant into one group, and comparing the binary bit streams of the first vertex and other vertexes in each group to obtain auxiliary information; the vertex is encrypted, and binary information of the encrypted vertex is transferred back to floating-point number information; the floating-point number information is sent to a data embedding party, secret data are embedded, and binary vertex information is transferred back to the floating-point ...

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Номер записи: 8
04-07-2023 дата публикации

Reversible data hiding method based on prediction error correction and adaptive optimization mapping

Номер: CN116389650A
Автор: SUI LIANSHENG, ZHOU GUANGBIAO, XIAO ZHAOLIN, WANG ZHANMIN
Принадлежит:

The invention discloses a reversible data hiding method based on prediction error correction and adaptive optimization mapping. The method specifically comprises the following steps: dividing an original image into blocks which are equal in size and are not overlapped with each other; dividing the pixel blocks into two sets which are arranged in a crossed manner, calculating the complexity of the blocks, and sorting the blocks from small to large; determining the scanning sequence of the current pixel block according to the surrounding pixel blocks, and calculating four prediction errors in the pixel block by using an improved pixel value sorting algorithm; traversing the two groups of complexity thresholds, respectively modifying prediction errors in different intervals, pairing the prediction errors with the values of 0 and 1, and selecting a two-dimensional mapping with the minimum distortion from multiple groups of mappings; embedding data according to an embedding rule, and calculating ...

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Номер записи: 9
30-11-2011 дата публикации

Device and method for acquiring high-resolution full-scene image in high dynamic range in real time

Номер: CN0101963751B
Автор: WANG QING, ZHOU GUOQING, XIAO ZHAOLIN, WU WENJIE, LI LEI, JI CHAO, QING WANG, GUOQING ZHOU, ZHAOLIN XIAO, WENJIE WU, LEI LI, CHAO JI
Принадлежит:

The invention discloses a device and a method for acquiring a high-resolution full-scene image in a high dynamic range in real time. The method comprises the following steps of: fixing N sets of image acquiring equipment on a workbench through an L-shaped support, wherein camera lens of each equipment is horizontally toward the outside of the circumference, and optical shaft extended lines of thecamera lenses are converged in the circle centre of the circumference arranged on the L-shaped support toward the circumference; vertically arranging N+1 sets of image acquiring equipment upwards on the workbench and enabling the optical shaft extended lines of the camera lenses to pass through the circle centre; arranging the device to a central position where requires shooting the scene; connecting the image acquiring equipment and an image processing work station, carrying out parameter setting on the image acquiring equipment by the image processing work station, continuously shuttering and ...

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Номер записи: 10
01-08-2023 дата публикации

Reversible data hiding method based on pixel prediction and block adaptive coding

Номер: CN116527905A
Автор: SUI LIANSHENG, SUN JINGDAN, XIAO ZHAOLIN, WANG ZHANMIN
Принадлежит:

The invention discloses a reversible data hiding method based on pixel prediction and block adaptive coding, which comprises the following steps of: partitioning a grayscale image, setting a reference pixel point, calculating a pixel prediction value through MED, performing subtraction to obtain a prediction error, marking a prediction error sign bit, setting the highest bit surface of a prediction error image to be all zero, performing inter-block and in-block scrambling on the image, and hiding the pixel prediction value and the prediction error sign bit. The method comprises the following steps of: processing a gray level image, encrypting the gray level image by using a stream cipher function after the processing is completed, partitioning the encrypted image, analyzing high seven bit planes of pixels in blocks from high to low, obtaining different block types according to whether the bit planes are all zero and one or not, performing subdivision processing on an encrypted block of ...

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Номер записи: 11
09-06-2023 дата публикации

Multi-image authentication method based on Fourier single-pixel imaging and double-logic mapping

Номер: CN116248400A
Автор: SUI LIANSHENG, ZENG TIANYU, XIAO ZHAOLIN, WANG ZHANMIN
Принадлежит:

The invention discloses a multi-image authentication method based on Fourier single-pixel imaging and double-logic mapping, and the encryption process comprises the steps: selecting an initial iteration value and a bifurcation parameter, generating a sequence through logic mapping, randomly selecting Fourier spatial frequencies through the sequence, carrying out the average grouping, obtaining four groups of Fourier base patterns through four-step phase shift and differential measurement, and carrying out the encryption of the Fourier base patterns. The method comprises the following steps of: irradiating an original target image by using a Fourier-based pattern to obtain four groups of illumination intensity values, synthesizing the illumination intensity values into a light intensity value sequence, reselecting an initial iteration value and a bifurcation parameter, generating a sequence by using logic mapping, and scrambling the light intensity value sequence to obtain a final ciphertext ...

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Номер записи: 12
02-02-2011 дата публикации

Device and method for acquiring high-resolution full-scene image in high dynamic range in real time

Номер: CN0101963751A
Автор: QING WANG, GUOQING ZHOU, ZHAOLIN XIAO, WENJIE WU, LEI LI, CHAO JI, WANG QING, ZHOU GUOQING, XIAO ZHAOLIN, WU WENJIE, LI LEI, JI CHAO
Принадлежит:

The invention discloses a device and a method for acquiring a high-resolution full-scene image in a high dynamic range in real time. The method comprises the following steps of: fixing N sets of image acquiring equipment on a workbench through an L-shaped support, wherein camera lens of each equipment is horizontally toward the outside of the circumference, and optical shaft extended lines of the camera lenses are converged in the circle centre of the circumference arranged on the L-shaped support toward the circumference; vertically arranging N+1 sets of image acquiring equipment upwards on the workbench and enabling the optical shaft extended lines of the camera lenses to pass through the circle centre; arranging the device to a central position where requires shooting the scene; connecting the image acquiring equipment and an image processing work station, carrying out parameter setting on the image acquiring equipment by the image processing work station, continuously shuttering and ...

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Номер записи: 13