Method of enhancing images extracted from video
First Claim
1. A method of enhancing a still digital image extracted from a compressed video sequence, said compressed video sequence comprising at least one I-frame and at least one P-frame, said method comprising:
- determining whether an I-frame or a P-frame of video has been extracted;
determining the quantization matrix of the previous I-frame if a P-frame has been extracted;
reconstructing the extracted video frameenhancing the image based on the quantization matrix of the present I-frame if the extracted frame is an I-frame and enhancing the image based on the quantization matrix of the previous I-frame if a P-frame has been extracted.
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Abstract
Method and devices for enhancing still digital images extracted from a compressed video sequences are disclosed herein, wherein the compressed video sequence comprises at least one I-frame and at least one P-frame. The method comprises determining whether an I-frame or a P-frame of video has been extracted, determining the quantization matrix of the previous I-frame if a P-frame has been extracted, and reconstructing the extracted video frame. The image is enhanced based on the quantization matrix of the present I-frame if the extracted frame is an I-frame and based on the quantization matrix of the previous I-frame if a P-frame has been extracted.
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Citations
23 Claims
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1. A method of enhancing a still digital image extracted from a compressed video sequence, said compressed video sequence comprising at least one I-frame and at least one P-frame, said method comprising:
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determining whether an I-frame or a P-frame of video has been extracted; determining the quantization matrix of the previous I-frame if a P-frame has been extracted; reconstructing the extracted video frame enhancing the image based on the quantization matrix of the present I-frame if the extracted frame is an I-frame and enhancing the image based on the quantization matrix of the previous I-frame if a P-frame has been extracted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification