基于图形硬件的纹理图像编码与实时绘制算法

被引:9
作者
汤颖 [1 ]
张宏鑫 [2 ]
张美玉 [1 ]
机构
[1] 浙江工业大学软件学院
[2] 浙江大学CAD&CG国家重点实验室
关键词
纹理图像; 图像编码; 可编程图形硬件;
D O I
暂无
中图分类号
TP391.41 [];
学科分类号
080203 ;
摘要
真实感绘制对于细节的要求越来越高,应用程序通常采用多幅或大幅分辨率很高的纹理图像,有限的内存空间就成了一个制约的瓶颈.针对纹理图像的特点和可编程图形硬件的特殊要求,该文提出了一种新的面向绘制的编码算法——增量式纹理编码算法及相应的解压绘制算法,有效地解决了纹理存储容量和真实感之间的矛盾,并利用可编程图形硬件实现了实时解压绘制.该算法在图像压缩编码过程中,动态添加码表内容,只有当已有码表内容不能表示当前图像区域时,才增加码表内容.这种方法不仅能够对于自相似性较强的纹理图像取得很高的压缩比,而且由于码表的动态更新特性,可以对图像序列进行流式编码.在绘制纹理时,该算法充分利用了现有可编程图像硬件的特性,实现了实时解压绘制.文中分别对于静态图像和动态图像序列进行了实验,结果显示,此方法能灵活有效地对各类纹理图像进行编码.
引用
收藏
页码:272 / 280
页数:9
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