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Inverse Halftoning Method of Error Diffused Images Using Look-Up Table with State Reduction

机译:使用状态减小的查找表逆半声误差误差的方法

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Various methods have been proposed for Inverse Halftoning (HI) of Error Diffusion (ED) Images Among them Look-Up Table (LUT) method based on every possible combination of the bi-level output of reference pixels has been considered to be most effective and quite practical since IH function can be generated by simple averaging of the histogram of original con-tone levels of the target pixels in each context, and the image quality can be controlled by the number of reference pixels. In this paper, we will propose a hybrid system, in which each context is composed of the combination of the conventional logic of some part of reference pixels and reduced state information given by the number of black pixels in other reference pixels. The result shows that the PSNR compared under the same number of contexts are improved from the conventional method especially when applied to the images not included in the training data.
机译:基于参考像素的双级输出的所有可能的组合被认为是最有效的,已经提出了各种方法,以便在它们的查找表(LUT)方法中的逆出半音(HI)的误差扩散(ED)图像中的误差扩散(ED)图像。已经被认为是最有效的由于IH函数可以通过在每个上下文中的目标像素的原始锥体电平的直方图的直方图的简单平均来生成,并且可以通过参考像素的数量来控制图像质量。在本文中,我们将提出一个混合系统,其中每个上下文由参考像素的某些部分的传统逻辑的组合和由其他参考像素中的黑色像素的数量给出的缩小状态信息。结果表明,在相同数量的上下文下比较的PSNR从传统方法中提高,特别是当应用于不包括在训练数据中的图像时。

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