03-01-2013 дата публикации
Номер: US20130004066A1
Принадлежит:
A media reproduction device determines a background color of a document. 1. A method executed by a media reproduction device , comprising:receiving, at the media reproduction device, an image of a document;determining, by the media reproduction device, a background color of the document in an area without text and graphics;replacing, by the media reproduction device, a range of pixel values of the background color with a new value;compressing, by the media reproduction device, the document with the range of pixel values that are changed to the new value; andtransmitting, by the media reproduction device, the compressed document.2. The method of further comprising claim 1 , determining the background color with histograms.3. The method of further comprising claim 1 , examining a margin of the document to determine the background color.4. The method of further comprising claim 1 , determining a dominant color that occurs in the area without text and graphics to determine the background color.5. The method of further comprising claim 1 , replacing the range of pixel values of the background color with a white color.6. A non-transitory computer readable storage medium comprising instructions that when executed causes a media reproduction device to:calculate a histogram that determines a background color occurring in a margin of a colored scanned document;calculate a median value of the background color occurring in the margin of the colored scanned document;determine pixels in the document that have a color within a range of the median value; andreduce background noise in the document by changing the pixels within the range to have the median value.7. The non-transitory computer readable storage medium of including instructions to further cause the media reproduction device to: snap pixels within one standard deviation of the median value to a single color.8. The non-transitory computer readable storage medium of including instructions to further cause the media ...
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