Study on a low cost, high quality hybrid scaling algorithm

Image scaling plays an important role in digital image processing. It is widely applied in all sorts of display terminals. A new scaling method was proposed in this paper. The method combines traditional nearest neighbor and bilinear methods in a simple but effective way. The hybrid algorithm was discussed based on analysis of its idea origin. Multiple input interpolation method was put forward for improving image quality in down scaling. FPGA based hardware design was fulfilled. Experiments shows that the algorithm has good features of fine-edge, changeable smoothness and low cost of hardware resource. It is very suitable for applications that require good image quality with low hardware cost