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Method for Modeling Context of Wavelet Transform based on Directional Filtering and Apparatus for Coding Wavelet, and Recording Medium therefor
Method for Modeling Context of Wavelet Transform based on Directional Filtering and Apparatus for Coding Wavelet, and Recording Medium therefor
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机译：基于方向滤波和小波编码装置的小波变换上下文建模方法及其记录介质
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摘要
In the present invention, the directional filtering based on wavelet transform and wavelet encoding device context modeling method and the recording medium for this purpose . is ; This invention is a discrete wavelet transform unit executing the standard Discrete Wavelet (Wavelet) or directional filtering of the discrete wavelet transform based on the input video signal on; Including the sign information and the filter direction a group of coded transform coefficients for storing information related to the wavelet coding device memory; A context selector configured to select a context based on the orientation of the transform coefficients and transform coefficients sample; And predicting the probability of the code to be coded by the selected context to the context information by the selection unit, and a transformation coefficient code received from the arithmetic coding discrete wavelet transform unit for generating a bit stream by performing arithmetic coding; including , because the transform coefficients performs coding with reference to the context of the release code to the group application code and the surrounding around the sample of the coded samples that meet the filtering direction from the coding process of the transformation coefficient code, a context model to be a high correlation between the transform coefficients can have the advantage that, because of this it can be expected the effect of providing a high coding efficiency on the directional adaptive filter based on wavelet transform.
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