自适应迭代滤波插值算法
首发时间:2009-07-28
摘要:本文提出一种自适应迭代滤波插值算法。该算法分为三个步骤:首先采用双线性插值算法进行初始插值,然后对绿平面在色差域内进行自适应迭代滤波,最后利用更新后的绿平面计算得出全彩图像。试验结果表明:(1)客观评测方面,相比经典插值算法,本文算法的平均峰值信噪比PSNR值提高4 dB以上;(2)主观视觉方面,算法克服了经典插值后图像的边缘锯齿和模糊效应,使插值后的图像更清晰。
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Adaptive Iterative Demosaicking Method
Abstract:In this paper, we propose a new color demosaicking method. Three steps to be required to complete the algorithm: (1) first compute using th bilinear interpolation asthe Initialization step; (2) then update and filter the color difference value using the adaptive filtering concept and exploit it for recover the G plane; (3) finally recover the full color image utilizing the demosaicked G plane and the updated color difference value. Experiments show that: (1) the proposed approach cansignificantly improves the image quality in subjective measures PSNR more than 4 dB. (2) It performs the high quality of our approach visually without false color and smoothing dietortion but also have a notably lower computational cost.
Keywords: Interpolation Bayer Pattern Adaptive Demosaicking Iteration Filtering
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