METHOD AND APPARATUS FOR SCALABLE VIDEO ENCODING USING IMAGE UPSAMPLING BASED ON PHASE-SHIFT, METHOD AND APPARATUS FOR SCALABLE VIDEO DECODING USING IMAGE UPSAMPLING BASED ON PHASE-SHIFT

摘要

base layer of the image enhancement layer image corresponding to the reference image to determine which layer in step, the improvement layer image and the reference layer according to the color format of scale and improving layer between the image enhancement layer, comprising: determining a pixel phase difference between the image and the reference layer, the image, the filter comprising a filter coefficient set of coefficient data corresponding to the phase difference using at least one step of selecting a set of filter coefficients, the filter coefficient set, the reference layer by performing interpolation filtering on the image magnified resolution of the reference layer picture at a scale up-sampled reference to generate a layer image, up obtaining a prediction error between the sampled reference layer picture and enhancement layer picture, the prediction error and the scalable encoding the enhancement layer bit stream to produce a and the base layer image, including the codec for generating a base layer bitstream there is provided a video encoding method comprising.