diff options
Diffstat (limited to 'config/mpv/shaders/Anime4K_Denoise_Bilateral_Median.glsl')
| -rw-r--r-- | config/mpv/shaders/Anime4K_Denoise_Bilateral_Median.glsl | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/config/mpv/shaders/Anime4K_Denoise_Bilateral_Median.glsl b/config/mpv/shaders/Anime4K_Denoise_Bilateral_Median.glsl new file mode 100644 index 0000000..e711607 --- /dev/null +++ b/config/mpv/shaders/Anime4K_Denoise_Bilateral_Median.glsl @@ -0,0 +1,120 @@ +// 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-Median-Luma
+//!HOOK MAIN
+//!BIND HOOKED
+//!SAVE LINELUMA
+//!COMPONENTS 1
+
+float get_luma(vec4 rgba) {
+ return dot(vec4(0.299, 0.587, 0.114, 0.0), rgba);
+}
+
+vec4 hook() {
+ return vec4(get_luma(HOOKED_tex(HOOKED_pos)), 0.0, 0.0, 0.0);
+}
+
+//!DESC Anime4K-v3.2-Denoise-Bilateral-Median-Apply
+//!HOOK MAIN
+//!BIND HOOKED
+//!BIND LINELUMA
+
+#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 HISTOGRAM_REGULARIZATION 0.0 //Histogram regularization window size, higher values approximate a bilateral "closest-to-mean" filter.
+
+#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 int(max(int(SPATIAL_SIGMA), 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)
+
+float gaussian(float x, float s, float m) {
+ float scaled = (x - m) / s;
+ return exp(-0.5 * scaled * scaled);
+}
+
+vec4 getMedian(vec4 v[KERNELLEN], float w[KERNELLEN], float n) {
+
+ for (int i=0; i<KERNELLEN; i++) {
+ float w_above = 0.0;
+ float w_below = 0.0;
+ for (int j=0; j<KERNELLEN; j++) {
+ if (v[j].x > v[i].x) {
+ w_above += w[j];
+ } else if (v[j].x < v[i].x) {
+ w_below += w[j];
+ }
+ }
+
+ if ((n - w_above) / n >= 0.5 && w_below / n <= 0.5) {
+ return v[i];
+ }
+ }
+}
+
+vec4 hook() {
+ vec4 histogram_v[KERNELLEN];
+ float histogram_l[KERNELLEN];
+ float histogram_w[KERNELLEN];
+ float n = 0.0;
+
+ float vc = LINELUMA_tex(HOOKED_pos).x;
+
+ float is = pow(vc + 0.0001, INTENSITY_POWER_CURVE) * INTENSITY_SIGMA;
+ float ss = SPATIAL_SIGMA;
+
+ for (int i=0; i<KERNELLEN; i++) {
+ vec2 ipos = GETOFFSET(i);
+ histogram_v[i] = HOOKED_texOff(ipos);
+ histogram_l[i] = LINELUMA_texOff(ipos).x;
+ histogram_w[i] = gaussian(histogram_l[i], is, vc) * gaussian(length(ipos), ss, 0.0);
+ n += histogram_w[i];
+ }
+
+ if (HISTOGRAM_REGULARIZATION > 0.0) {
+ float histogram_wn[KERNELLEN];
+ n = 0.0;
+
+ for (int i=0; i<KERNELLEN; i++) {
+ histogram_wn[i] = 0.0;
+ }
+
+ for (int i=0; i<KERNELLEN; i++) {
+ histogram_wn[i] += gaussian(0.0, HISTOGRAM_REGULARIZATION, 0.0) * histogram_w[i];
+ for (int j=(i+1); j<KERNELLEN; j++) {
+ float d = gaussian(histogram_l[j], HISTOGRAM_REGULARIZATION, histogram_l[i]);
+ histogram_wn[j] += d * histogram_w[i];
+ histogram_wn[i] += d * histogram_w[j];
+ }
+ n += histogram_wn[i];
+ }
+
+ return getMedian(histogram_v, histogram_wn, n);
+ }
+
+ return getMedian(histogram_v, histogram_w, n);
+}
\ No newline at end of file |