SIGNALS FOR CHANGES quantization parameter coded unit of highly efficient video coding (HEVC)

摘要

1. A method of decoding video data, the method consists in: receiving the highest coding unit (LCU) encoded video data, the LCU is divided into a set of coded units (CU) with a smaller block size in accordance with the scheme quadtree division; and determining comprises a CU whether any non-zero transform coefficients, at least in part by decoding the encoded data for reproducing at least one of the instructions includes a CU whether any non-zero transform coefficients; and decoding one or more syntax elements for CU, to indicate a change in quantization parameter for CU relative to the predicted quantization parameter for the CU, only if CU includes any non-zero transform coefficients, wherein one or more syntax decoded elements of the position within the encoded video data : a) after an indication that CU will include at least some non-zero transform coefficients, wherein the indication that the CU will include at least some nonzero transformation coefficients includes coded block flag (CBF), and b) prior to the transformation coefficients for CU, and wherein the one or more syntax elements not included in the CU, if the CU does not include any non-zero coefficients preobrazovaniya.2. A method according to Claim. 1, wherein the CU size meets or exceeds the threshold size, wherein the allowed changes kvantovaniya.3. A method according to Claim. 1, wherein the one or more syntax elements comprises a delta quantization parameter indicating a variation in the quantization parameter with respect to