Method and apparatus for image data compression

Details Method and apparatus for image data compression Method and apparatus for image data compression

2011-04-19

2011-04-19

Couso, Jose L (Department: 2624)

Image analysis

Image compression or coding

Adaptive coding

Reexamination Certificate

active

07929794

ABSTRACT:
An image data file undergoes compression, such as JPEG compression. The size of the resulting compressed file is compared with a file size limit. If the file size limit is exceeded, then the compression factor may be increased. A scaler reduces the image pixel resolution if the required compression factor would otherwise exceed a predetermined limit. This may prevent a high degree of compression from providing an image of poor visual quality.

REFERENCES:
patent: 6792153 (2004-09-01), Tsujii
patent: 7747097 (2010-06-01), van Baarsen et al.
patent: 2004/0028139 (2004-02-01), Zaccarin et al.
Abraham et al., Bandwidth-Aware Video Encoding with Adaptive Image Scaling, Proceedings of the 2004 IEEE International Conference on Multimedia and Expo, vol. 1, Jun. 27, 2004.

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