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Method for choosing rate control parameters in motion-compensated transform-based picture coding scheme using non-parametric technique
Method for choosing rate control parameters in motion-compensated transform-based picture coding scheme using non-parametric technique
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机译:基于非参数技术的基于运动补偿变换的图像编码方案中速率控制参数的选择方法
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摘要
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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