Dithering method for reproducing smoothly changing tones and fine details of natural images on woven fabric
Dithering method for reproducing smoothly changing tones and fine details of natural images on woven fabric
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DOI：
10.1177/0040517517732087
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发表时间：
2018-12
影响因子：
2.3
通讯作者：
Tetsuya Igarashi;M. Toyoura;Xiaoyang Mao
中科院分区：
文献类型：
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作者：
Tetsuya Igarashi;M. Toyoura;Xiaoyang Mao
本文介绍了一种新的方法，以改善织物上渲染的灰度数字图像的美学外观，平滑地改变色调，提高细节的再现性。该方法是基于步进抖动，一个最近开发的抖动方法自动生成提花图案的任意给定的图像。现有的步进抖动方法存在两个问题。第一个问题是对于包含低频、平滑灰度区域的输入图像，图案的视觉上不吸引人的重复。第二个问题是相对于掩模尺寸具有高频率的小结构的低再现性。针对提花织物上图案重复性和再现性差的问题，提出了一种在提花织物上真实再现任意自然图案的新方法。新的方法结合了联合收割机两种方法。第一个问题通过优化抖动掩模中的阈值分布来解决，而第二个问题通过对步进抖动掩模的适当区域采用动态二值化过程来解决。本文所述的实验表明，所提出的方法成功地改善了所得织造织物的外观。
This paper introduces novel methods to improve the aesthetic appearance of rendered grayscale digital images on woven fabric by smoothly changing tones and improving the reproducibility of fine details. The methods are based on stepping dithering, a recently developed dithering method for automatically generating jacquard weave patterns for arbitrary given images. The existing stepping dithering method suffers from two problems. The first problem is the visually unappealing repetition of patterns for input images containing low frequency, smooth gradation regions. The second problem is the low reproducibility of small structures with high frequency relative to mask size. This paper proposes new methods for faithfully rendering arbitrary natural images on jacquard fabric by solving the pattern repetition and low reproducibility problems. The new methods combine two approaches. The first problem is addressed by optimizing the distribution of thresholds in dither masks, while the second problem is addressed by adopting a dynamic binarizing process for an appropriate area of the stepping dither mask. The experiments described herein show that the proposed method successfully improves the appearance of the resulting woven fabric.