图像数据压缩的二维离散余弦变换实现

摘要

The aim of image compression is to reduce the expression of the desired image data. Based on the property of energy concentration and energy conservation, discrete cosine transform is adopted to realize image compression. The introduced method can obtain a higher compression ratio, and good image quality.%图像数据压缩的目的是减少表达图像信息所需的数据量。本文根据二维离散余弦变换能量集中及能量守恒的特点，通过选择合适的频域系数进行量化和编码，从而实现图像数据的压缩。该实现方法能获得较的高压缩比，且能保证较好的图像质量。