US Patent No: 6,292,589
Number of patents in Portfolio can not be more than 2000
Method for choosing rate control parameters in motion-compensated transform-based picture coding scheme using non-parametric technique
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Sep 18, 2001
Issued date -
Jun 21, 1996
filing date -
08/668,153
serial no -
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Abstract
A method of assigning quantization values for use during the compression of images is disclosed. The method includes constructing a non-parametric model during a training phase based on relationships between image characteristics, quantization values, and required bit resources to encode images. The model is built by considering a wide sample of images. The consideration includes determining the temporal and spatial characteristics of the images, compressing the images over a range of quantization values, and recording the resultant required bit resource on a per characterization/quantization level basis. Once built, the model may be used during real time compression by determining the characteristics of the input image and using the allocated resource to find a corresponding match in the non-parametric model. The associated quantization value is then assigned to the input image.
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,984,076 Image compression coding system | 73 | 1989 | |
| 5,530,478 Image data compressing apparatus | 20 | 1993 | |
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| 5,067,015 Method of processing video image data for use in the storage or transmission of moving digital images | 52 | 1990 | |
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| 5,231,484 Motion video compression system with adaptive bit allocation and quantization | 309 | 1991 | |
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| 5,440,344 Video encoder using adjacent pixel difference for quantizer control | 35 | 1993 | |
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| 5,136,377 Adaptive non-linear quantizer | 86 | 1990 | |
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| 5,323,187 Image compression system by setting fixed bit rates | 37 | 1992 | |
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| 5,956,426 Multi-coding apparatus | 11 | 1997 | |
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