一种改进的混合DCT-SVD彩色图像编码系统

IEEE International Symposium on Communications and Information Technology, 2004. ISCIT 2004. Pub Date : 2004-11-21 DOI:10.1109/TENCON.2004.1414425

Y. Wongsawat, H. Ochoa, K. Rao, S. Oraintara

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引用次数: 8

摘要

我们提出了一种改进的混合DCT-SVD图像编码系统(MHDCTSVD)来编码单色和彩色图像。颜色(RGB)组件被转换成YCbCr。沿水平和垂直方向的Cb和Cr分量都被下采样了1 / 2。使用Y分量的8/spl乘以/8块的标准差在DCT和SVD之间进行选择。DCT用于变换YCbCr分量中相关性高的块，SVD用于变换相关性低的块。仿真结果表明，与传统的DCT-SVD混合图像编码算法相比，该算法在低比特率下具有良好的图像质量。

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A modified hybrid DCT-SVD image-coding system for color image

We propose a modified hybrid DCT-SVD image-coding system (MHDCTSVD) to encode both monochromatic and color images. The color (RGB) components are transformed into YCbCr. Cb and Cr components are downsampled by a factor of two along both the horizontal and vertical directions. The standard deviation of 8/spl times/8 blocks of the Y component is used to select between DCT and SVD. The DCT is used to transform the highly correlated blocks of the YCbCr components, while the SVD is used to transform blocks with low correlation. The simulation results show good image quality at low bit rates compared with the conventional hybrid DCT-SVD image-coding algorithm.

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IEEE International Symposium on Communications and Information Technology, 2004. ISCIT 2004.

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