两幅图像的对比度调整

Question

我有两张不同对比度的图像。如何才能使第二张图像具有相同的对比度比例？有什么技术可以做到这一点吗？直方图匹配技术是否适用于此目的？

Answer 1

使用SimpleITK

import SimpleITK as sitk

# read images
im_ref = sitk.ReadImage("/path/to/reference/image")
im_orig = sitk.ReadImage("/path/to/image/to/be/modified")

# apply histogram matching
histogram_match = sitk.HistogramMatchingImageFilter()
histogram_match.SetThresholdAtMeanIntensity(True)  # useful if a lot of background pixels
im_matched = histogram_match.Execute(im_orig, im_ref)

# write output
sitk.WriteImage(im_matched, "/path/for/output/image")