反差调整 meaning in Chinese

contrast adjustment

2 . the radiant characteristics of the sar images are evaluated , which includes relative calibrations and absolute calibrations of the sar images , corrections of the antenna patterns , and ratio transforms and contrast adjustments of the sar images
2 . sar定标与其图像辐射特性评价,包括图像的内定标和外定标,以及以天线方向图校正、比例变换和反差调整为内容的sar图像的辐射校正和增强。