Approximated unsharp masking on equi-hue plane in RGB color space

IF 1.1 4区 物理与天体物理 Q4 OPTICS
Mashiho Mukaida, Noriaki Suetake
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引用次数: 0

Abstract

Unsharp masking is a common method of image sharpening. If unsharp masking is applied to each RGB component of a color image, the hue of the output image is changed from that of the input image. A hue-preserving unsharp masking method has been proposed thus far. However, the effect of image sharpening is slightly small. In this paper, we propose a new hue-preserving unsharp masking method that sharpens the image effectively. In the proposed method, componentwise unsharp masking is approximated by linear transformation satisfying Naik’s hue-preserving condition, and the gamut problem is solved by processing in an equi-hue plane in an RGB color space. In the experiments, the effectiveness of the proposed method is verified by qualitative and quantitative evaluations.

RGB颜色空间中等色调平面上的近似非锐化掩模
非锐化掩模是一种常见的图像锐化方法。如果对彩色图像的每个RGB分量应用去锐化掩模,则输出图像的色调与输入图像的色调不同。到目前为止,已经提出了一种保持色调的非锐化掩模方法。然而,图像锐化的效果稍小。在本文中,我们提出了一种新的保持色调的非锐化掩模方法,可以有效地锐化图像。在该方法中,通过满足Naik色调保持条件的线性变换来近似分量反锐化掩模,并通过在RGB颜色空间中的等色调平面中进行处理来解决色域问题。在实验中,通过定性和定量评价验证了该方法的有效性。
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来源期刊
Optical Review
Optical Review 物理-光学
CiteScore
2.30
自引率
0.00%
发文量
62
审稿时长
2 months
期刊介绍: Optical Review is an international journal published by the Optical Society of Japan. The scope of the journal is: General and physical optics; Quantum optics and spectroscopy; Information optics; Photonics and optoelectronics; Biomedical photonics and biological optics; Lasers; Nonlinear optics; Optical systems and technologies; Optical materials and manufacturing technologies; Vision; Infrared and short wavelength optics; Cross-disciplinary areas such as environmental, energy, food, agriculture and space technologies; Other optical methods and applications.
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