Image coding method and device

The invention discloses an image coding method and device, and belongs to the field of mobile communication. The method comprises the following steps: acquiring a first input pixel of a to-be-coded image; carrying out wavelet transformation on the first input pixel to obtain a wavelet transformation coefficient; performing frequency band division processing on the numerical value of the wavelet transform coefficient; and according to the frequency band corresponding to each wavelet transform coefficient, performing the discrete wavelet transform EZW coding on the wavelet transform coefficient. According to the embodiment of the invention, the problem that an EZW coding mode is not beneficial to hardware acceleration of a chip in the prior art is solved. 本申请公开了一种图像编码方法及装置，属于移动通信领域。所述方法包括：获取待编码图像的第一输入像素；对所述第一输入像素进行小波变换，得到小波变换系数；对所述小波变换系数的数值大小进行分频段处理；根据每个所述小波变换系数对应的频段，对所述小波变换系数进行离散小波变换EZW编码。本申请实施例解决了现有技术中，EZW编码的方式不利于芯片的硬件加速的问题。