Digital Radiography Image Adaptive Enhancement Based on Wavelet Transform
基于小波变换的数字胸片自适应增强

The equivalence equation in wavelet domain is deduced from the basic theory of adaptive image contrast enhancement in time domain.Based on the principle of visually receptive psychology, the gain should be determined by the background of the image.At the same time, the gain should be adjusted when taking the trait of the digital radiography with important details lie in medium spatial frequency into account.The experiment results show that wavelet adaptive enhancement with adjusted gain is effective for the enhancement of the detail information in digital radiography.