说明：  重点介绍了双线性插值算法和该方法的Ｆ Ｐ ＧＡ硬件实现 方法， 包括图像数据缓冲单元、 插值系数生成单元以及插值计算单元等。
(Highlights the bilinear interpolation algorithm and the method of F P GA hardware The method includes an image data buffer unit, the interpolation coefficient generating unit and an interpolation computing unit and the like.)