A METHOD AND DEVICE FOR IMAGE ENTROPY ENCODING AND ENTROPY DECODING

摘要

A method and device for image entropy encoding and entropy decoding are provided, which includes: according to an entropy encoding and decoding code table corresponding to the block transformation of the first type, acquiring the parameters of an entropy encoding and decoding code table corresponding to the block transformation of the second type by mapping, and using the parameters of the entropy encoding and decoding code table to perform the entropy encoding and decoding on the image block data of the block transformation of the second type. In the embodiments of present invention, as only storing the code table corresponding to the blocktransformation of the first type, and acquiring the code table corresponding to the block transformation of the second type by a conversion processing of the stored code table corresponding to the block transformation of the first type, it can be achieved to reuse the code table in different transformation modes on condition of occupying less storage resource, and the efficiency of the entropy encoding or entropy decoding can be ensured.