运用层次处理技术调整图像的密度和对比度，运用锐化处理技术实施影像细节的增强。

The density and contrast of images were adjusted by the gradation processing, the tiny construction of images was enhanced by the edge enhancement.

youdao

运用层次处理技术调整图像的密度和对比度，运用锐化处理技术实施影像细节的增强。

The density and contrast of images were adjusted by the gradation processing, the tiny construction of images was enhanced by the edge enhancement.

youdao