Edge Adaptive Image Scaling Algorithm Based on FPGA

In order to achieve high speed and high quality image scaling in Field Programmable Gate Array(FPGA),this paper proposes an edge adaptive image scaling algorithm based on FPGA.This algorithm uses bilinear interpolation algorithm out of the edge area,uses directional three interpolation algorithm in the edge area,designs the hardware structure and operation logic structure,uses Verilog language to describe,and gives the object code.Experimental results show that this algorithm can gain edge clear scaling image,the complexity of the algorithm is low,after magnifing 2.5 times,the Peak Signal to Noise Ratio(PSNR) of image is 40.76 dB.