1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
// MIT License
// Copyright (c) 2019-2021 bloc97
// All rights reserved.
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//!DESC Anime4K-v3.2-Denoise-Bilateral-Mean
//!HOOK MAIN
//!BIND HOOKED
#define INTENSITY_SIGMA 0.1 //Intensity window size, higher is stronger denoise, must be a positive real number
#define SPATIAL_SIGMA 1.0 //Spatial window size, higher is stronger denoise, must be a positive real number.
#define INTENSITY_POWER_CURVE 1.0 //Intensity window power curve. Setting it to 0 will make the intensity window treat all intensities equally, while increasing it will make the window narrower in darker intensities and wider in brighter intensities.
#define KERNELSIZE (max(int(ceil(SPATIAL_SIGMA * 2.0)), 1) * 2 + 1) //Kernel size, must be an positive odd integer.
#define KERNELHALFSIZE (int(KERNELSIZE/2)) //Half of the kernel size without remainder. Must be equal to trunc(KERNELSIZE/2).
#define KERNELLEN (KERNELSIZE * KERNELSIZE) //Total area of kernel. Must be equal to KERNELSIZE * KERNELSIZE.
#define GETOFFSET(i) vec2((i % KERNELSIZE) - KERNELHALFSIZE, (i / KERNELSIZE) - KERNELHALFSIZE)
vec4 gaussian_vec(vec4 x, vec4 s, vec4 m) {
vec4 scaled = (x - m) / s;
return exp(-0.5 * scaled * scaled);
}
float gaussian(float x, float s, float m) {
float scaled = (x - m) / s;
return exp(-0.5 * scaled * scaled);
}
vec4 hook() {
vec4 sum = vec4(0.0);
vec4 n = vec4(0.0);
vec4 vc = HOOKED_tex(HOOKED_pos);
vec4 is = pow(vc + 0.0001, vec4(INTENSITY_POWER_CURVE)) * INTENSITY_SIGMA;
float ss = SPATIAL_SIGMA;
for (int i=0; i<KERNELLEN; i++) {
vec2 ipos = GETOFFSET(i);
vec4 v = HOOKED_texOff(ipos);
vec4 d = gaussian_vec(v, is, vc) * gaussian(length(ipos), ss, 0.0);
sum += d * v;
n += d;
}
return sum / n;
}
|
