Filter 常用滤镜

@ixenos 2022年1月6日

1. 低亮度

[
    1, 0, 0, 0, -50,
    0, 1, 0, 0, -50,
    0, 0, 1, 0, -50,
    0, 0, 0, 1, 0 
];

• 高亮度改为正数即可

2. 置灰

[
    0.3, 0.6, 0, 0, 0,
    0.3, 0.6, 0, 0, 0,
    0.3, 0.6, 0, 0, 0,
    0, 0, 0, 1, 0
];

3. 置黑

[
    1, 0, 0, 0, -255,
    0, 1, 0, 0, -255,
    0, 0, 1, 0, -255,
    0, 0, 0, 1, 0
];

标签：常用,0.3,50,0.6,Filter,滤镜,255
来源： https://www.cnblogs.com/ixenos/p/15771115.html