Image compression technique utilizing reference points coding with threshold values

This paper intends to bring forward an image compression method which is capable to perform both lossy and lossless compression. A threshold value is associated in the compression process, different compression ratios can be achieved by varying the threshold values and lossless compression is performed if the threshold value is set to zero. The proposed method allows the quality of the decompressed image to be determined during the compression process. This provides more flexibility to the users, not only in choosing the appropriate compression type, but the users may also vary the threshold values to meet preferable compression ratios corresponding to the desired quality of decompressed images.