| 彩色图像多尺度融合灰度化算法 |
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| 引用本文： | 顾梅花,王苗苗,李立瑶,冯婧.彩色图像多尺度融合灰度化算法[J].计算机工程与应用,2021,57(4):209-215. |
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| 作者姓名： | 顾梅花 王苗苗 李立瑶 冯婧 |
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| 作者单位： | 西安工程大学 电子信息学院，西安 710600 |
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| 基金项目： | 陕西省自然科学基础研究计划项目;国家自然科学基金 |
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| 摘 要： | 为了使彩色图像灰度化后能够保留更多的原始特征，提出了一种新的基于多尺度图像融合的灰度化算法。将彩色图像分解为R、G、B三个通道图像，采用基于高斯-拉普拉斯金字塔的多尺度图像融合模型进行灰度化，并引入梯度域导向图像滤波（Gradient Domain Guided Image Filter，GGIF）来消除多尺度融合可能产生的伪影。将灰度化问题转换为保持三个通道单色图像特征的多尺度融合问题。实验结果表明，与其他灰度化算法相比，所提算法对边缘信息敏感，并能够在较亮或较暗区域检测出更多的图像细节特征。
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| 关 键 词： | 灰度化 图像融合 金字塔分解 梯度域导向图像滤波（GGIF） |
Color Image Multi-scale Fusion Graying Algorithm |
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| GU Meihua,WANG Miaomiao,LI Liyao,FENG Jing.Color Image Multi-scale Fusion Graying Algorithm[J].Computer Engineering and Applications,2021,57(4):209-215. |
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| Authors: | GU Meihua WANG Miaomiao LI Liyao FENG Jing |
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| Affiliation: | School of Electronics and Information, Xi’an Polytechnic University, Xi’an 710600, China |
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| Abstract: | To preserve more original features after decolorization, this paper presents a new color-to-gray conversion algorithm based on multi-scale image fusion principles. The color image is decomposed into three monochrome channel images：R, G and B, the multi-scale image fusion model based on Gaussian-Lapacian pyramid is adopted to convert color image into gray image, the Gradient Domain Guided Image Filter（GGIF） is employed to eliminate the artifacts that may be produced by multi-scale fusion. The decolorization problem is transformed into a multi-scale fusion problem that preserves the image features of three monochromatic channels in a fusion image as far as possible. Experimental results show that the proposed algorithm is more sensitive to edge information compared with the existing state-of-the-art decolorization techniques, and can preserve the detailed features which are lost in the other methods in bright or dark areas. |
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| Keywords: | color-to-gray conversion image fusion pyramid decomposition Gradient Domain Guided Image Filter（GGIF） |
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