提出了一种基于位平面的图像质量可分级编码方法,结合小波变换的良好空间一频率等特性,对静止图像进行位平面编码和算术编码.并在解码时根据给定解码的数率不同对位平面进行重构以实现图像的质量可分级性。实验结果证明,该方法实现简单,编解码速度快,在保证具有很好的编码效果的前提下,可以实现图像的质量可分级编码。
This paper has put forward a PSNR scalable image coding method based on bit-plane technique. Combining lifting scheme wavelet transform and arithmetic coding, the method constructs different bit-planes according to the target bit rates so as to achieve PSNB scalability. The experimental results prove, that the proposed method can be implemented simply and achieve high code / decode speed and good compression quality. Moreover, on the premise of high coding quality, the method can realize image's PSNR scalable coding.