Progressive Image Transmission is a novel, very efficient method for image compression and transmission specifically suited for the ever-congested WorldWide Web.
Compression reduces the overall amount of data that has to be transmitted for an image.
Image formats used on the Web, such as GIF, JPEG, and PNG, take advantage of compression, and include an option for progressive transmisson. The BCQ format always uses progressive transmission, in a visibly more efficient way, which also results in superior compression. Examples Please look at the following examples to see how well BCQ image transmission works. Newer versions of Netscape and Internet Explorer are fine. With a straightforward Java implementation, decoding may feel slow.