基于图像局部平滑性和边界连续性两个约束条件,通过计算与错误块相邻两行(列)像素的差值以判断经过该错误块各边缘的纹理方向,并利用离散余弦变换的特性,实现快速重建错误块。实验结果表明,该方法不仅计算量较小,而且处理后的图像质量与同类方法相比有明显提高。 Based on the two local constraints of image smoothness and boundary continuity, the difference between two adjacent rows and columns of the erroneous block is calculated to determine the texture direction of each edge of the erroneous block. By using the characteristics of discrete cosine transform, To achieve rapid reconstruction error block. Experimental results show that the proposed method not only reduces the computational complexity, but also improves the image quality compared with similar methods.