多灰度图像的激光雕刻算法是研究如何通过激光雕刻来逼真再现具有连续色调的灰度图像。作者构造了“多级误差扩散”的算法,利用图像四叉树来表示输入灰度图像与输出图像之间的区别,并在全图的范围内按照“最大亮度”规则选择误差扩散的像素,这样有效的消除了模式噪声、边界效应与黑洞效应,使利用激光雕刻出的图像很好的再现了原始图像,具有良好的视觉效果。 The laser engraving algorithm of multi-grayscale images is to study how to vividly reproduce grayscale images with continuous tone by laser engraving. The author constructs the algorithm of “multi-level error diffusion”, uses the image quadtree to represent the difference between the input gray image and the output image, selects the pixels with error diffusion according to the “maximum brightness” rule in the whole image, This effectively eliminates the pattern noise, the boundary effect and the black hole effect, so that the use of laser-engraved images reproduced the original image well, with good visual effects.