A color image progressive transmission method by common bit map block truncation coding approach

This paper proposes a new progressive image transmission (PIT) scheme for color images. The backbone of the new method is block truncation coding (BTC). The common BTC bit map will be employed to reduce the bit rate and to accelerate the transmission process; moreover, a break cluster method will also be put to use to speed up the division of the block tree. It can be a rather complex job to deal properly with color images transmitted progressively; therefore, to make it easier and faster, we shall count on the BTC method. Our experimental results show that our new algorithm, with a lower bit rate and higher reconstructed image quality, obviously outperforms the BPM and traditional BTC methods. The high PSNR results in most phases can help the user decide whether to wait for more of the current image to come out or to abort the transmission session as quickly as possible.