A new schemer for ultrasound image contrast enhancement using wavelet-based histogram equalization was presented to deal with the sonogram images with too low in contract and too dark for the naked eye.

• 针对超声图像对比度低、成像质量差的问题,提出了一种基于小波变换的直方图均衡算法,用于超声图像对比度增强,并使信息熵有很大提高。