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首页> 外文期刊>International Journal of Innovative Computing Information and Control >COLOR IMAGE ENHANCEMENT WITH EXACT HSI COLOR MODEL
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COLOR IMAGE ENHANCEMENT WITH EXACT HSI COLOR MODEL

机译：精确的HSI颜色模型增强彩色图像

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摘要

While enhancing the intensity or saturation component for high-quality color image enhancement, keeping the hue component unchanged is important; thus, perceptual color models such as HSI, HSL and HSV were used. Hue-Saturation-Intensity (HSI) is a public color model, and many color applications are commonly based on this model; however, the transformation from HSI model to RGB model usually generates the out-of-gamut problem after modifying intensity and saturation in the HSI model. Moreover, the saturation component is always increased or decreased following the change of intensity component no matter what the attainable saturation range is. In this paper, we propose accurate formulas for the color transformation between RGB and the proposed HSI color model, called the exact HSI (eHSI) color model, to resolve the out-of-gamut problem directly as well as automatically adapt the saturation range; that is, the saturation component can be enhanced or reduced according to the attainable maximum saturation range. In experiments, we demonstrate how to sacrifice a little contrast to improve the image saturation based on the proposed eHSI color model.
机译：在增强强度或饱和度分量以实现高质量彩色图像增强的同时，保持色相分量不变很重要；因此，使用了诸如HSI，HSL和HSV之类的感知颜色模型。色相饱和度强度（HSI）是一种公共颜色模型，许多颜色应用程序通常都基于该模型。但是，从HSI模型向RGB模型的转换通常会在修改HSI模型的强度和饱和度后产生色域外问题。而且，无论可达到的饱和范围是多少，饱和度分量总是随着强度分量的变化而增加或减小。在本文中，我们提出了用于在RGB和所提出的HSI颜色模型之间进行颜色转换的精确公式，称为精确HSI（eHSI）颜色模型，以直接解决色域外问题并自动调整饱和度范围。即，可以根据可达到的最大饱和范围来增加或减少饱和分量。在实验中，我们演示了如何基于提出的eHSI颜色模型牺牲一点对比度来提高图像饱和度。

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