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An Efficient Method for the Fusion of Light Field Refocused Images

机译:一种有效的光场重聚焦图像融合方法

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Light field cameras have drawn much attention due to the advantage of post-capture adjustments such as refocusing after exposure. The depth of field in refocused images is always shallow because of the large equivalent aperture. As a result, a large number of multi-focus images are obtained and an all-in-focus image is demanded. Consider that most multi-focus image fusion algorithms do not particularly aim at large numbers of source images and traditional DWT-based fusion approach has serious problems in dealing with lots of multi-focus images, causing color distortion and ringing effect. To solve this problem, this paper proposes an efficient multi-focus image fusion method based on stationary wavelet transform (SWT), which can deal with a large quantity of multi-focus images with shallow depth of fields. We compare SWT-based approach with DWT-based approach on various occasions. And the results demonstrate that the proposed method performs much better both visually and quantitatively.
机译:由于捕获后调整(例如,曝光后重新对焦)的优势,光场相机备受关注。由于较大的等效光圈,重新聚焦图像中的景深始终较浅。结果,获得了大量的多焦点图像,并且需要全焦点图像。考虑到大多数多焦点图像融合算法并不特别针对大量源图像,并且传统的基于DWT的融合方法在处理大量多焦点图像时存在严重问题,从而导致色彩失真和振铃效果。为了解决这个问题,本文提出了一种基于平稳小波变换(SWT)的高效多焦点图像融合方法,该方法可以处理大量景深较浅的多焦点图像。我们在各种情况下将基于SWT的方法与基于DWT的方法进行了比较。结果表明,该方法在视觉和定量上都具有更好的性能。

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