The article explores different methods to improve the quality of images with low contrast. Traditional histogram equalization can make images look better, but sometimes it makes them too sharp and unnatural. The researchers tested new ways to enhance images without these problems. They found that using different dividing points in the image histogram can lead to better results. By comparing the quality of the enhancements using specific measurements like PSNR and AMBE, they discovered that these new methods can improve image quality without causing visual artifacts.