| 基于全相位DCT/IDCT内插的去马赛克算法 |
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| 引用本文： | 李莉,侯正信,王成优,何凡. 基于全相位DCT/IDCT内插的去马赛克算法[J]. 光电工程, 2008, 35(12): 96-100 |
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| 作者姓名： | 李莉 侯正信 王成优 何凡 |
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| 作者单位： | 天津大学电子信息工程学院,天津,300072;天津工程师范学院电子工程系,天津,300222;天津大学电子信息工程学院,天津,300072 |
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| 基金项目： | 天津市自然科学基金资助项目 ， 教育部博十点新教师基金项目 |
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| 摘 要： | 针对消费类摄像设备中的马赛克问题,本文提出了一种基于全相位DCT/1DCT内插滤波器的色差空间去马赛克算法.该方法根据三种颜色图像之间的相关性及采样特点,采用全相位IDCT菱形半带滤波器实现了绿色图像重构,并用全相位延拓DCT内插滤波器实现了红绿色差和蓝绿色差的重构.其中全相位IDCT内插滤波器是纯二维滤波器,且能够直接实现五点梅花形采样矩阵与矩形采样矩阵之间的转换.而全相位延拓DCT内插滤波器能够有效地抑制FIR滤波器的吉布斯效应.实验结果表明,本文算法比双线性内插算法重构图像PSNR最多高6 dB,能够保留更多的图像边缘细节,且比自适应算法运算效率高.
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| 关 键 词： | 去马赛克 内插 全相位滤波器 Bayer模式 DCT/IDCT |
| 收稿时间： | 2008-06-23 |
Demosaicing Algorithm Based on All Phase DCT/IDCT Interpolation |
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| LI Li,HOU Zheng-xin,WANG Cheng-you,HE Fan. Demosaicing Algorithm Based on All Phase DCT/IDCT Interpolation[J]. Opto-Electronic Engineering, 2008, 35(12): 96-100 |
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| Authors: | LI Li HOU Zheng-xin WANG Cheng-you HE Fan |
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| Affiliation: | LI Li1,2,HOU Zheng-xin1,WANG Cheng-you1,HE Fan1(1.School of Electronic Information Engineering,Tianjin University,Tianjin 300072,China,2.Department of Electronic Engineering,Tianjin University of Technology , Education,Tianjin 300222,China) |
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| Abstract: | To resolve the problem of mosaicing in portable cameras,a color difference space demosaicing algorithm based on all phase DCT/IDCT filters was presented.According to the correlation between the three color planes of color image and their sampling grids type,all phase diamond halfband IDCT filter was used to reconstruct the green image,and all phase extended DCT interpolation filter was used to reconstruct the R-G and B-G images.All phase IDCT interpolation filter was a pure 2-D filter which could convert be... |
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| Keywords: | DCT/IDCT |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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