理论分析和MATLAB编程实践表明，基于直方图的图像增强技术确实能在一定程度上改善图像的对比度和灰度动态范围，提高图像的清晰度。-Theoretical analysis and MATLAB programming practice shows that the histogram-based image enhancement technology can indeed to a certain extent to improve the image contrast and grayscale dynamic range and improve image clarity.