Technical Measures of Improving Contrast and SNR of Industrial Digital Image

Contrast and SNR are core factors of industrial image quality. Starting with human vision character, the distinguishing ability of eyes for grey grades was calculated and tested. The relationships of contrast and SNR to exposure parameters wered deduced based on receiving character of digital radiation detector. A technical measure to improve contrast and SNR of industrial digital image was hereby presented. Present method could be applied for optimizing digital RTR technique and referenced for configuring RTR equipment.