Progressive image transmission (PIT) transmits the most significant portion of a picture, followed
by its less important portions. The mechanism can be used in Web-based applications while users are
browsing images. However, most PIT methods use the same pixel interpolation scheme for the entire
picture, without considering the differences among image blocks. This paper analyzes the efficiency of
pixel interpolation schemes and tests several decomposition mechanisms. The contribution results in an
adaptive image transmission scheme, which takes the differences of picture portions into consideration.
This study tested 1500 pictures in different categories and parameters. In consequence, the overall bit
rates can be reduced significantly with good PSNR values and user satisfaction. The visual result is
superior to progressive JPEG on both objective (quantitative) and subjective (human) measures. An
error recovery procedure is also implemented in case that the transmitted pictures need to be fully
recovered.
Relation:
Asian Journal of Health and Information Sciences 1(2):204-227
