在图象的数字化和图形、图像的显示上,正六角形网格比正方形网格更好。本文根据第二代图像编码技术的设计原理,将这一原理应用于图像压缩编码中,设计了准正六角形网格亚取样图像编码实现方法,即:从现有的图象数字化正方形网格阵列中抽取出一个类正六角形网格的亚(小)图象阵列。该方法的重建图象在边界特征保持及综合视觉效果上,明显优于同级的正方形网格亚取样方案。 In the image of the digital and graphics, image display, the hexagonal grid is better than the square grid. In this paper, based on the design principle of the second generation of image coding technology, this principle is applied to the image compression coding, and the sub-sampling image coding method of quasi-hexagonal grid is designed. That is to say, from the existing image digitized square grid array In the extraction of a class of hexagonal grid sub (small) image array. The reconstructed image of this method is obviously superior to the square grid sub-sampling scheme of the same level in maintaining the boundary feature and the comprehensive visual effect.