| 数字图像的网点补偿方法研究 |
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| 引用本文： | 李杰,王海文. 数字图像的网点补偿方法研究[J]. 影像技术, 2011, 23(4): 20-22,12. DOI: 10.3969/j.issn.1001-0270.2011.04.05 |
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| 作者姓名： | 李杰 王海文 |
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| 作者单位： | 1. 衢州职业技术学院,信息工程学院,衢州,324000
2. 浙江科技学院,轻工学院,杭州,310023 |
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| 基金项目： | 浙江省衢州市科技计划项目(20091038); 衢州学院科研项目(2YK0914) |
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| 摘 要： | 以数字灰度图像为例,依据所测代表性网点增大值采用Matlab编程方法,绘制网点增大曲线,然后采用求逆方法基于牛顿迭代法求取对应的网点补偿值,从而拟合出网点补偿曲线。最后通过该补偿曲线,基于阈值模版法采用Matlab编程方法直接对数字图像的每个像素进行修正处理,从而完成数字图像的网点补偿处理。结果表明,网点补偿图像的阶调得到拓展,亮度得到提升,层次更加柔和,因此更利于图像的高品质印刷输出。
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| 关 键 词： | 网点补偿 数字图像 Matlab 网点扩大 |
Research on Dot Compensation Method of Digital Image |
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| LI Jie,WANG Hai-wen. Research on Dot Compensation Method of Digital Image[J]. Image Technology, 2011, 23(4): 20-22,12. DOI: 10.3969/j.issn.1001-0270.2011.04.05 |
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| Authors: | LI Jie WANG Hai-wen |
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| Affiliation: | LI Jie1,WANG Hai-wen 2 (1.Department of Information and Power Engineering,Quzhou College of Technology,Quzhou 324000,China,2.School of Light Industry,Zhejiang University of Science and Technology,Hangzhou 310023,China) |
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| Abstract: | Digital gray image as an example,based on the measured representative dot gain values,it drew the dot gain curve by Matlab programming method.Then based on Newton's iterative method it obtained the corresponding dot compensation values in calculating inverse method and fit the dot compensation curve.At last based on the dot compensation curve and threshold matrix method it processed directly each pixel of the digital image by Matlab programming method and achieved dot compensation of the digital image.The r... |
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| Keywords: | dot compensation digital image Matlab dot gain |
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