Method and apparatus for video encoding with bit depth control for fixed point transform method and apparatus for video decoding with bit depth control for fixed point transform

摘要

The present invention proposes a video coding method for adjusting the range of coded output data to adjust the bit depth in the process of restoring the encoded samples and a video decoding method for preventing overflow of output data for each detailed step of decoding do. Parses and reconstructs transform coefficients quantized for each block of the image from the received bitstream, performs inverse quantization on the quantized transform coefficients, restores transform coefficients less than the first bit depth, A video decoding method for performing inverse transform and inverse scaling to recover samples below a second bit depth is disclosed.