This thesis mainly for study the improvement of image quality of video format conversion based on the space varying bilinear interpolation, and realize the design by FPGA. Conventional bilinear interpolation method has the characteristic of the inverse ratio between sampling grayscale level and the distance. Such method has a serious blurring problem due to the linear structure. We propose the space varying bilinear interpolation with various sharpness constant to get better performance and sharper image than that interpolated by the conventional bilinear interpolation. Personal computer simulations using read images performance of the proposed algorithm. The performance evaluation is base on the PSNR and Sharpness between the original and reconstructed image, and the results were shown better than the traditional bilinear interpolation algorithms. Besides, it also reveals that the novel method can process high resolution, with true color picture of size up to 1024*768 pixels at real-time video of 60 frames/sec. The implementation can under less embedded memory requirement.