Quality metric for filter arrangement in a multispectral filter array
Quality metric for filter arrangement in a multispectral filter array
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DOI：
10.1109/pcs.2013.6737705
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发表时间：
2013-12
期刊：
影响因子：
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通讯作者：
Kazuma Shinoda;Taisuke Hamasaki;Madoka Hasegawa;Shigeo Kato;Antonio Ortega
中科院分区：
文献类型：
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作者：
Kazuma Shinoda;Taisuke Hamasaki;Madoka Hasegawa;Shigeo Kato;Antonio Ortega
近年来，已经提出了针对多光谱图像的镶嵌色过滤器阵列和Demosaick的方法。几项研究评估了多光谱滤波器阵列（MSFA）模式，但是尚未提出优化模式的方法。我们专注于无疑的空间安排，以提高演示的图像质量。为了评估过滤器的排列，我们提出了一种使用过滤器的空间和光谱相关性的新指标。通过使用模拟退火和提议的度量来优化该布置。提出的指标的一个优点及其优化是他们不需要使用图像数据。实验结果表明，新的度量标准与峰值与信号噪声比（PSNR）成正比，并且可以通过使用模拟退火来最大程度地减少度量来获得较高的PSNR。
Mosaicked color filter arrays and demosaicking methods for multispectral images have been proposed in recent years. Several studies have evaluated the multispectral filter array (MSFA) pattern, but a method to optimize the pattern has not been proposed. We focus on the spatial arrangement of MSFAs to improve the demosaicked image quality. To evaluate the filter arrangement, we propose a new metric that uses both the spatial and spectral correlation of the filters. The arrangement is optimized by using simulated annealing and the proposed metric. An advantage of the proposed metric and its optimization is that they do not need to use image data. Experimental results show that the new metric is proportional to the peak-to-signal noise ratio (PSNR) and that a higher PSNR can be obtained by minimizing the metric using simulated annealing.