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US 6,687,407 B2Granted
Quantization table adjustment
AssigneeAvid Technology, Inc.
InventorEric C. Peters
Life of this patent
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Abstract
The application discloses a media processing method that includes accessing a compressed image data set representing a time series of different compressed video images. These video images have been compressed to differing degrees based on sizes of the compressed video images with a plurality of different quantization tables. The compressed image data set can then be decompressed to retrieve the time series of different video images, and this step of decompressing can be operative independent of information indicating a difference between quantization tables used to compress the images.
Claims11
A media processing method, comprising:
- accessing a compressed image data set representing a time series of different compressed video images that have been compressed to differing degrees based on sizes of the compressed video images with a plurality of different quantization tables and including a first compressed video image compressed with a first quantization table and a second video image compressed with a second quantization table, and
- decompressing the compressed image data set to retrieve the time series of different video images, wherein the step of decompressing the compressed image data set includes a step of decompressing the first compressed video image to obtain a first video image and a step of decompressing the second video image to obtain a second video image, and wherein the step of decompressing is operative independent of information indicating a difference between the first and second quantization tables.
Dependencies are inferred from the claim text.