锐化是提矮图像澄辉度的灵验霸术。
Sharpening is to enhance the effective method of image sharpness.
一个发光体的辉度，当然因方向不同而异。
The brilliance of a luminous object may, of course, be different in different directions.
一个发光体的辉度，当然因方向不同而异。
The brilliance of a luminous object may, of course, be different in different directions.
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