A new approach for medical image enhancement based on luminance-level modulation and gradient modulation

Chenyi Zhao, Zeqi Wang, Huanyu Li, Xiaoyang Wu, Shuang Qiao, Jianing Sun

Abstract: Highlights•A novel medical images enhancement method based on luminance modulation and gradient modulation (LM&GM) is proposed.•The LM is adopted for adjusting luminance and increasing contrast by shrinking the global dynamic range of input image.•The GM is used for enhancing details and textures of the images on the basis of the luminance modulation.•The performance of the proposed method is compared with the popular enhancement methods.•Quantitative analyses are applied to demonstrate the significance of LM&GM superior to other methods.