文章摘要
张茜,刘真.基于FIR 数字滤波器的扫描图像去网[J].包装工程,2013,34(21):114-117.
ZHANG Xi,LIU Zhen.Scanned-image Descreening Based on FIR Digital Filter[J].Packaging Engineering,2013,34(21):114-117.
基于FIR 数字滤波器的扫描图像去网
Scanned-image Descreening Based on FIR Digital Filter
投稿时间:2013-08-08  修订日期:2013-11-10
DOI:
中文关键词: 半色调去网  FIR 数字低通滤波  PSNR
英文关键词: halftone image descreening  FIR low pass filter  PSNR
基金项目:
作者单位
张茜 上海理工大学, 上海200093 
刘真 上海理工大学, 上海200093 
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中文摘要:
      针对扫描图像,提出了一种基于FIR 数字低通滤波器的去网方法,该方法是将图像从空间域转换到频率域,对频率域图像进行FIR 低通滤波处理,结合图像评价指标PSNR,选择最优的滤波器参数。用该去网算法与常用的去网算法进行了比较,结果表明,该去网算法在达到去网效果的同时能够更好地保留边缘信息。
英文摘要:
      A descreening method for scanned image based on FIR digital low pass filter was put forward. The image was converted from the spatial domain to the frequency domain and the frequency domain was processed by FIR low pass filter. The optimal filter parameters were selected combined with image evaluation PSNR. The descreening algorithm was compared with other commonly used algorithms. The result showed that the algorithm has good descreening effect and can better maintain the edge information at the same time.
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