调节画面明暗的工具，+权重为提高亮度，-权重为压暗画面，权重范围-2到2。

A tool for adjusting the brightness of the image, with+weight to increase brightness and - weight to darken the image, with a weight range of -2 to 2.

有兴趣交流的童鞋和商业合作可以加企鹅群：731622989