Image composition for use in lossy compression
First Claim
Patent Images
1. A method for use in lossy compression of image data, the method comprising:
- compressing each of a plurality of images individually;
determining an individual compressibility value for each of the images;
identifying a number of image collections each of which includes more than one of the plurality of images;
compressing each collection as a whole;
determining, for each image in an image collection, a composite compressibility value, which represents the image'"'"'s compressibility as part of the image collection; and
for each image in an image collection, obtaining a ratio based on the image'"'"'s individual compressibility value and composite compressibility value. selecting more than one image from the plurality of images; and
creating a composite image which comprises the selected images, wherein image selection is based at least in part on the obtained ratio, and wherein, for at least one of the selected images, lossy compression of the composite image results in improved compressibility.
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Abstract
The present invention, which can be used with any lossy compression, concerns the selection of images to form a composite image which comprises the selected images, wherein, for at least one of the selected images, lossy compression of the composite image results in an improved compressibilty.
21 Citations
15 Claims
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1. A method for use in lossy compression of image data, the method comprising:
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compressing each of a plurality of images individually;
determining an individual compressibility value for each of the images;
identifying a number of image collections each of which includes more than one of the plurality of images;
compressing each collection as a whole;
determining, for each image in an image collection, a composite compressibility value, which represents the image'"'"'s compressibility as part of the image collection; and
for each image in an image collection, obtaining a ratio based on the image'"'"'s individual compressibility value and composite compressibility value. selecting more than one image from the plurality of images; and
creating a composite image which comprises the selected images, wherein image selection is based at least in part on the obtained ratio, and wherein, for at least one of the selected images, lossy compression of the composite image results in improved compressibility. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification