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Perceptual color contouring detection and quality evaluation using scanners

机译:使用扫描仪进行感知色彩轮廓检测和质量评估

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摘要

Within color reproduction issues, the reproducible color gamut and color accuracy can be classified as pointwise problems without considering interaction among neighboring pixels. Image color contouring, on the other hand, occurs when perceived local color change exceeds a threshold such that observers perceive unnatural color discontinuity. Therefore, it is the color correlation within neighboring pixels that determines the existence of color contouring artifacts. In this proposal, the objective is to adopt a color flatbed scanner as the measuring device to obtain color as well as spatial information. A set of test targets with smooth geometrical color variation covering various cross sections in the color space is created and printed on different printing systems. Finally, an algorithm to identify the location color contouring is proposed.
机译:在颜色再现问题中,可重现的色域和颜色准确性可以分类为逐点问题,而无需考虑相邻像素之间的相互作用。另一方面,当感觉到的局部颜色变化超过阈值以致观察者感觉到不自然的颜色不连续时,发生图像颜色轮廓。因此,相邻像素内的颜色相关性决定了颜色轮廓伪影的存在。在该建议中,目标是采用彩色平板扫描仪作为测量设备,以获取颜色以及空间信息。创建一组具有平滑几何颜色变化且覆盖色彩空间中各个横截面的测试目标,并将其打印在不同的打印系统上。最后,提出了一种识别位置颜色​​轮廓的算法。

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