Method of processing video image data for use in the storage or transmission of moving digital images
First Claim
1. A method of processing video image data for use in the storage or transmission of moving digital video images, comprising the steps of:
- decomposing each frame image into an equivalent set of sub-images containing information on different length scales,deriving encoded prediction rules from the sub-images decomposed in said decomposing step;
approximating each sub-image using data from the immediately preceding compressed sub-image and data from the current sub-image to produce compressed data of an image for subsequent storage or transmission to a receiver; and
reconstructing de-compressed current frame data, after retrieval or receipt, by comparison of the compressed data received for the current frame image with a reconstruction of the preceding frame image.
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Abstract
A method of processing video image data for use in the storage or transmission of moving digital video images, includes decomposition of each frame image into an equivalent set of sub-images containing information on different length scales, derivation of encoded prediction rules from the decomposed data to approximate each sub-image using data from the immediately preceding compressed sub-image and data from the current sub-image to produce compressed data of an image for subsequent storage or transmission to a receiver and reconstruction, after retrieval or receipt, by comparison of the compressed data received for the current frame image with the reconstruction of the preceding frame image.
70 Citations
15 Claims
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1. A method of processing video image data for use in the storage or transmission of moving digital video images, comprising the steps of:
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decomposing each frame image into an equivalent set of sub-images containing information on different length scales, deriving encoded prediction rules from the sub-images decomposed in said decomposing step; approximating each sub-image using data from the immediately preceding compressed sub-image and data from the current sub-image to produce compressed data of an image for subsequent storage or transmission to a receiver; and reconstructing de-compressed current frame data, after retrieval or receipt, by comparison of the compressed data received for the current frame image with a reconstruction of the preceding frame image.
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- 2. A method of processing video image data for use in the storage or transmission of moving digital video images, including the steps of examining a current frame image, sub-band decomposing the current frame image by bandpass filtering to produce a set of sub-images, dividing each sub-image in the current frame image set into a plurality of blocks, comparing the blocks for each sub-image in the current frame image set with the blocks in the approximation of the corresponding sub-image in the preceding frame image set for similarities and variations in illumination intensity, generating for each block of each sub-image of the current frame image set a prediction rule and errors resulting therefrom to produce for each sub-image of the current frame image partially compressed data which is the sum of the predicted sub-image and corresponding error image, and further compressing the partially compressed data for each sub-image of the current frame image by encoding to produce fully compressed current frame image data, for subsequent passage or transmission to storage or a receiver and reconstruction of the retrieved or received fully compressed current frame image data.
Specification