An image processing method for facilitating data transmission is provided. An image compression method is performed to convert X-bits binary digital signals to a binary compressed data in the form of n*2.sup.m, in which n is represented by the former Y bits of the X-bits binary digital signals, m is set to the value of (X-Y), and represented by binary numbers with [log.sub.2 (X-Y+1)] bits. The binary compressed data is transmitted with a sequence of [log.sub.2 (X-Y+1)]+Y bits, representing (m, n), wherein m is the former [log.sub.2 (X-Y+1)] bits and n is the latter Y bits. Therefore, by the present image compression method, the transmission amount of image data is reduced. The transmission time of image data and the volume of a memory for storing the image data are also reduced.