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Noise reduction in high dynamic range imaging

机译:高动态范围成像中的降噪

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A common method to create high dynamic range (HDR) images is to combine several different exposures of the same scene. In this approach, the use of higher ISO settings will reduce exposure times, and thereby the total capture time. This is advantageous in certain environments where it may help minimize ghosting artifacts. However, exposures taken at high sensitivity settings tend to be noisy, which is further amplified by the HDR creation algorithm. We present a robust and efficient technique to significantly reduce noise in an HDR image even when its constituent exposures are taken at very high ISO settings. The method does not introduce blur or other artifacts, and leverages the wealth of information available in a sequence of aligned exposures.
机译:创建高动态范围(HDR)图像的常用方法是将同一场景的几种不同曝光进行组合。在这种方法中,使用较高的ISO设置将减少曝光时间,从而减少总拍摄时间。这在可以帮助最大程度地减少重影伪影的某些环境中是有利的。但是,在高感光度设置下拍摄的曝光往往会很吵,而HDR创建算法会进一步放大。我们提出了一种强大而有效的技术,即使在非常高的ISO设置下拍摄HDR图像,也可以大幅降低其噪点。该方法不会引入模糊或其他伪像,并利用一系列对齐的曝光中可用的大量信息。

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