Block-based contrast enhancement method for medical application
Viacheslav Voronin, Evgeny A. Semenishchev, Aleksandr Aleksandrovich Zelenskii, Sos С. Agaian · 2021
We present a new image enhancement algorithm based on multi-scale block-rooting processing. The basic idea is to apply the frequency domain image enhancement approach for different image blocks. The parameter of transform coefficient enhancement for every block is driven through optimization of measure of enhancement. Some experimental results are presented to illustrate the performance of the proposed algorithm on the medical image dataset. It is shown that the proposed method can realize the image color constancy, local dynamic range compression, color enhancement, and the overall dynamic range compression under certain circumstances.