Image analysis – Image transformation or preprocessing – Image storage or retrieval
Patent
1996-10-15
2000-03-21
Au, Amelia
Image analysis
Image transformation or preprocessing
Image storage or retrieval
382240, G06K 954, G06K 960
Patent
active
060411473
ABSTRACT:
A video image indexing system includes a method for identifying categories in compressed digital data for improved retrieval of video images. An encoder receives a frame and digitizes the image data while a sub-band coder codes each digitized frame at a plurality of transform levels to derive categorized data segments. Data segments are stored and then retrieved according to minimum entropy of Eigenvalues in a first transform level. Preferably, the compression is improved by creating a residual image of each frame by subtracting a predicted frame image from the actual frame image. This compression of data enhances the recreation of lossless video images at the receiver.
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Au Amelia
Crook John A.
Hughes Electronics Corporation
Johnson Timothy M.
Sales Michael W.
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