Signal to noise improvement
First Claim
1. A computer-implemented method for compressing a sequence of digitized video images represented as pixels utilizing signal-to-noise improvement layers, the method being implemented in a computer system comprising one or more physical processors, the method comprising:
- generating at least one processed image layer from at least one of the sequence of digitized video images, each processed image layer comprising a plurality of values representing a coded image layer; and
generating a plurality of signal-to-noise layers, each signal-to-noise layer being derived from a corresponding coded image layer, wherein at least one such signal-to-noise layer is targeted to improving the quality of a selected specific feature of the corresponding coded image layer.
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Abstract
Systems, methods, and processor executable code for high quality wide-range multi-layer image compression of a sequence of video images. A computer-implemented method of adding signal-to-noise improvement layers which are targeted to specific aspects of a sequence of images. The method comprises selecting one or more aspects of a coded image to improve, isolating those image aspects using the selection criteria, and coding a signal-to-noise layer using the isolated coded image aspects. A computer-implemented method for generating a signal-to-noise correction layer from a digitized video image represented as pixels. The method comprises quantizing and dequantizing the digitized video image to create a coded image, subtracting the coded image from the digitized video image to create a signal-to-noise difference image represented as pixels, and applying one or both of quantization weighting and pixel weighting to the signal-to-noise difference image pixel values such that larger difference image pixel values have smaller quantized values.
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Citations
15 Claims
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1. A computer-implemented method for compressing a sequence of digitized video images represented as pixels utilizing signal-to-noise improvement layers, the method being implemented in a computer system comprising one or more physical processors, the method comprising:
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generating at least one processed image layer from at least one of the sequence of digitized video images, each processed image layer comprising a plurality of values representing a coded image layer; and generating a plurality of signal-to-noise layers, each signal-to-noise layer being derived from a corresponding coded image layer, wherein at least one such signal-to-noise layer is targeted to improving the quality of a selected specific feature of the corresponding coded image layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A computer-implemented method for compressing a sequence of digitized video images represented as pixels utilizing signal-to-noise improvement layers, the method being implemented in a computer system comprising one or more physical processors, the method comprising:
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generating at least one processed image layer from at least one of the sequence of digitized video images, wherein each processed image layer comprises a plurality of values representing one of a coded image layer or a signal-to-noise layer derived from a coded image layer; and encoding at least one generated processed image layer by preferentially allocating coding bits to regions of interest in such generated processed image layer by decreasing the amplitude of pixel differences near edges of the corresponding digitized video image using a weighting which decreases as a function of nearness to such image edges. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification