METHOD AND SYSTEM FOR IMAGE COMPRESSION USING IMAGE BLOCK CHARACTERISTICS

摘要

Method and system for adaptive image compression using block characteristics are provided. For adaptive image compression, blocks in an image are quantized and compressed using a quantization table that was used in quantization of the blocks. An image compression system checks a block-characteristics quantization table corresponding to a specific block in the image to be compressed in order to quantize the specific block, and performs calculation using a value of a first element of the quantization table corresponding to a specific element of the specific block and a value of a second element of the checked block-characteristics quantization table corresponding to the specific element in order to quantize the specific element.

主权项

1. An adaptive image compression method of quantizing blocks included in an image to be compressed using a quantization table commonly used in quantization of the blocks, the method comprising:
checking, at an image compression system, a block-characteristics quantization table corresponding to a specific block of the blocks included in the image in order to quantize the specific block; and quantizing the specific block using a value of an element included in the quantization table and a value of an element included in the block-characteristics quantization table.