摘要
为实现带有感兴趣区域全视觉图像的高效、快速传输,针对全视觉图像的特点,使用基于LDPC(低密度奇偶校验码)的信道编译码方法对图像进行传输.用不等错误保护思想对感兴趣区域进行重点保护,对感兴趣区域采用码长较长、码率较低的LDPC码,对非感兴趣区域采用码长较短、码率较高的LDPC码,在保证整幅图像质量前提下,使感兴趣区域的图像质量明显好于非感兴趣区域.
In order to realize the effective and speedy transmission for panoramic images with region of interest （ROI）,we used LDPC-based channel coding method to transmit the images in consideration of the characteristics of panorama image. The ROI was protected with unequal error protection strategy, that is, for ROI the LDPC code with long code length and low code rate was employed; whereas for non ROI, LDPC code with short code length and high code rate was adopted. Therefore, the quality of ROI of image is obviously better than that of background while the transmission quality of the whole image is guaranteed.
出处
《应用科技》
CAS
2008年第7期39-42,共4页
Applied Science and Technology
关键词
感兴趣区域
图像传输
LDPC
不等错误保护
region of interest（ROI）
image transmission
LDPC codes
unequal error protection （UEP）
