| 基于图像处理的印版网点面积率检测 |
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| 引用本文： | 余节约,李耀明.基于图像处理的印版网点面积率检测[J].中国印刷物资商情,2012(6):17-21. |
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| 作者姓名： | 余节约 李耀明 |
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| 作者单位： | [1]杭州电子科技大学数字媒体与艺术设计学院,杭州310018 [2]绍兴日报报业印务有限公司,绍兴312000 |
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| 基金项目： | 浙江省教育厅科研项目--基于显微摄影的印刷网点面积检测技术研究（No.Z201120502）;绍兴市科技计划项目-报业轮转胶印油墨数据预置技术的开发（No.2012711） |
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| 摘 要： | 检测与控制印版网点面积率是印刷质量控制的重要环节,本研究提出了一种检测印版网点面积率的新方法,利用常规的显微摄影仪器拍摄印版上的网点区域获得数字图像,采用阀值分割的方法对数字图像进行二值化处理,利用膨胀和腐蚀的方法消除图像中的噪点,再去除图像边缘不完整的网点,然后计算印版的网点面积率。经过实验验证,该方法可以获得比较精确的网点面积率检测结果,能够满足印刷生产中的印版网点面积率检测的需要。
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| 关 键 词： | 网点面积率 印版检测 图像处理 胶印 |
Detection of Dot Area Coverage on the Plate Based on Image Processing |
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| YU Jie-yue,LI Yao-ming.Detection of Dot Area Coverage on the Plate Based on Image Processing[J].China Printing Materials Market,2012(6):17-21. |
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| Authors: | YU Jie-yue LI Yao-ming |
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| Institution: | 1. School of Media and Design, Hangzhou Dianzi University, Hangzhou 310018, China; 2. Shaoxing Daily Newspaper Printing Co. , Ltd, Shaoxing 312000, China) |
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| Abstract: | The detection and control of the dot area coverage on the plate is an important link in printing quality control. In this paper, a new method of detecting dot area coverage on an offset printing plate was proposed. An ordinary microscope photographic apparatus was used in this method to get digital image of the dot area converage on the plate. Then the image was binarized using threshold segmentation method. The noises were cleared by dilation and erosion operation. Then, the in- complete dots located in the edges of the image were removed. Lastly, the dot area coverage on the plate was computed. The experiment results proved that the new method can get the more precise computing results of dot area coverage and meet the requirement of detecting the dot area coverage on the printing plate in printing production. |
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| Keywords: | Dot area converage Plate detection Image processing Offset printing |
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