| 刘丹华,李平,高大化,李欢,石光明.基于压缩感知的正六边形CFA模式彩色图像去马赛克方法[J].光电子激光,2015,26(2):360~367 |
| 基于压缩感知的正六边形CFA模式彩色图像去马赛克方法 |
| Color demosaicking method based on regular hexagon CFA pattern and compressive sensing |
| 投稿时间：2014-08-20 |
| DOI： |
| 中文关键词: 去马赛克 压缩感知(CS) 正六边形彩色滤镜阵列(CFA) 稀疏性 |
| 英文关键词:demosaicking compressive sensing (CS) regular hexagon color filter array (CFA) sparsity |
| 基金项目:国家自然科学基金(61372131,11204014)、中央高校基本科研业务费(NSIY20)和陕西省科技 新星(2013KJXX-80)资助 项目 (1．西安电子科技大学 电子工程学院,陕西 西安 710071； 2．空军 工程大学 理学院,陕西 西安 710051； 3．北京空间机电研究所,北京 100094) |
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| 中文摘要: |
| 针对基于四边形排列的去马赛克(Demosaicking)的 传统方法存在拉链现象和虚假色等问题,本文尝试将更加符合人眼视觉特性的六边形采 样方式应用于彩色图像成像 系统,并从图像稀疏特性角度出发,提出基于压缩感知(Compressive sensing,CS)框架的 彩色图像去马赛克方法。本文方法 充分挖掘了彩色分量间和分量内的稀疏特性,可使复原图像的纹理细节与色彩更加逼真,有 效地避免了拉链现象和虚假色现象。实验结果验证了本文方法的有效性。 |
| 英文摘要: |
| In the color imaging system based on Bayer color filter array (CFA),de mosaicking is a key process to high quality full-color images.Traditional demosaicking methods for quadrilate ral color filter array usually suffer from some artifacts,such as zipper effects and false colors.Medical researches s how that hexagonal sampling approach is more in line with the visual characteristics of the human eye.In th is paper,we try to apply hexagonal color filter array and sparse characteristics in the images in color imaging s ystem,and present a new demosaicking method based on compressive sensing (CS).Our method fully exploits the sparse ch aracteristics between and within three color components by using the color image theory and the RGB spectral characteristics,and thus can enhance the fidelity of reconstructed image,such as good texture details and color rep roduction.In particular,our method can avoid the aliasing phenomenon,such as false colors and zipper effects.The experimental results and peak signal to noise ratio (PSNR) value verify the effectiveness of the proposed method. |
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