CAJ | 학술논문

为了提高输出图像的质量，使人眼视觉产生连续调效果，使用了多级误差扩散算法生成网目调图像。多级加网技术在传统二值(0和1)之间增加了中间阶调，突破了长久以来人们一贯应用的“非黑即白”输出理念。通过分析传统误差扩散和多级误差扩散理论基础，提出了多级多阶误差扩散算法。多级多阶误差扩散采用迭代算法，引用图像四叉树来表示原始图像与输出网目调图像的差异。算法结果表明，多级多阶误差扩散加网技术使加网后的图像具有更为精确的阶调复制和更为丰富的层次再现，图像之间的过渡更为平整自然。
위료제고수출도상적질량，사인안시각산생련속조효과，사용료다급오차확산산법생성망목조도상。다급가망기술재전통이치(0화1)지간증가료중간계조，돌파료장구이래인문일관응용적“비흑즉백”수출이념。통과분석전통오차확산화다급오차확산이론기출，제출료다급다계오차확산산법。다급다계오차확산채용질대산법，인용도상사차수래표시원시도상여수출망목조도상적차이。산법결과표명，다급다계오차확산가망기술사가망후적도상구유경위정학적계조복제화경위봉부적층차재현，도상지간적과도경위평정자연。
In order to improve the quality of the output image, and make the human eye vision generate continuous tone effect, it uses the multi-level error diffusion algorithm to generate halftone image. Multi-level screening technology has increased the intermediate tone in the traditional two values (0 and 1). It has broken out of the “non-black or white” output concept which has long been consistent application. Analyzing the theoretical basis of the traditional error diffusion and multi-scale error diffusion algorithm came up with the multi-stage error diffusion algorithm. Multi-stage error diffusion used iterative algorithm, and quoted image quadtree to show the difference of original image and output halftone image. The results of this algorithm showed that multi-stage error diffusion screening technology made the image after screening more accurate tone reproduction and richer gradation reappearance, transition between the images were more smooth and natural.