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一种去除HDR图像噪声的新方法

DOI: 10.11834/jig.20100207

Keywords: 高动态范围,去除噪声,最小二乘,亮度响应曲线

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Abstract:

为了提高HDR(highdynamicrange)图像的质量,提出一种针对HDR图像滤噪的新方法。首先取得图像组中相同空间位置的点构成像素组;然后利用相机的ITF(intensitytransferfunction)还原成亮度值;接着通过求解最小二乘问题拟合L-t(luminance-exposuretime)直线,并用该直线修正各点亮度值;最后再通过ITF转换成像素值。图像组经滤噪之后,再用于合成HDR图像。实验结果表明,该算法运算量小,能有效去除椒盐型噪声,对高斯型噪声抑制效果明显,优于A.

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