一种肝脏体纹理压缩方法

A Compression Algorithm of Liver Based on Solid Texture

文章针对肝脏体纹理色彩锐变图像的局部特征,提出了基于块的游程编码和改进的S3TC混合编码方法。按照4×4像素对肝脏体纹理图像进行分块,直接抽取四种15 bits RGB565颜色作为四色查找表,而不进行插值计算,然后进行混合编码。实验证明,此算法对肝脏体纹理锐变图像较之传统的S3TC编码具有更高的压缩比和更好的图像重建品质。该方法对肝脏体纹理压缩具有较高的参考价值和实用价值。

A compression algorithm of the liver was proposed based on solid texture, the run-length coding based on block and the improved S3TC hybrid coding algorithm are adapted according to the local spectrum feature of the sharp color image in the liver based on solid texture. On the basis of the 4×4 pixels to block the texture im- age to the liver, it~ directly extracted four 15 bits RGB565 color as four color lookup table, instead of the inter- polation calculation. The experiment results show that the algorithm has higher compression ratio and better im- age reconstruction quality than S3TC. The method for the liver based on solid texture compression has higher ref- erence value and practical value.