CIS565-Fall-2022 · cyy0915 · Oct 22, 2022 · Oct 22, 2022
diff --git a/README.md b/README.md
@@ -3,11 +3,56 @@ CUDA Denoiser For CUDA Path Tracer
 
 **University of Pennsylvania, CIS 565: GPU Programming and Architecture, Project 4**
 
-* (TODO) YOUR NAME HERE
-* Tested on: (TODO) Windows 22, i7-2222 @ 2.22GHz 22GB, GTX 222 222MB (Moore 2222 Lab)
+* Yiyang Chen
+  * [LinkedIn](https://www.linkedin.com/in/yiyang-chen-6a7641210/), [personal website](https://cyy0915.github.io/)
+* Tested on: Windows 10, i5-8700k @ 3.7GHz, GTX 1080, personal computer
 
-### (TODO: Your README)
+### Gbuffer visualize
 
-*DO NOT* leave the README to the last minute! It is a crucial part of the
-project, and we will not be able to grade you without a good README.
+| normal | position | time-of-flight |
+|---|---|---|
+|![](img/gbuffer_normal.png)|![](img/gbuffer_pos.png)|![](img/gbuffer_t.png)|
 
+### Denoise result
+
+| no denoise | naive denoise | edge-avoiding denoise |
+|---|---|---|
+|![](img/no.png)|![](img/naive.png)|![](img/edgeAvoiding.png)|
+
+
+P.S. the filter size of the 2 denoise images is 2, and color weight  0.45, normal weight 0.35, position weight 0.2
+
+### Performance analysis
+
+* how much time denoising adds to your renders
+
+    * Rendering takes about 26000 microseconds and denoising takes only about 5 microseconds when the filter size is 10, which is very fast. 
+
+* how denoising influences the number of iterations needed to get an "acceptably smooth" result
+
+![](img/number_of_iteration.png)
+| no denoise (100 iterations) | denoise (20 iterations) |
+|---|---|
+|![](img/100.png)|![](img/20.png)|
+
+The above 2 images are a little different, but I think they are all smooth enough.
+
+* how varying filter sizes affect performance
+    * The time increases when filter size becomes larger.
+![](img/filtersize.png)
+
+* how visual results vary with filter size -- does the visual quality scale uniformly with filter size?
+
+    * I found that filter size 1 is much more smooth than filter size 0 (no denoise), and when filter size is 1, 2, 4, 8, I can see the visual quality improves a little. However, when filter size is larger than 10, the visual quality seems almost the same. I think it's because the weight of the far pixel is very small.
+
+* how effective/ineffective is this method with different material types
+
+    * I think it's effective with the material that has no texture map or the color is almost the same. Because if the color change quickly in space with similar normal and position, the denoise function may blur the material a little.
+
+* how do results compare across different scenes - for example, between cornell.txt and cornell_ceiling_light.txt. Does one scene produce better denoised results? Why or why not?
+
+    * cornell_ceiling_light.txt produce better denoise results than cornell.txt in 10 iteration. I think it's because of the size of light, that is to say, a big light makes the rendering converge faster, so the denoise result is also better.
+
+| cornell (10 iterations) | cornell_ceiling_light (10 iterations) |
+|---|---|
+|![](img/cornell.png)|![](img/edgeAvoiding.png)|
diff --git a/img/100.png b/img/100.png
diff --git a/img/20.png b/img/20.png
diff --git a/img/cornell.png b/img/cornell.png
diff --git a/img/edgeAvoiding.png b/img/edgeAvoiding.png
diff --git a/img/filtersize.png b/img/filtersize.png
diff --git a/img/gbuffer_normal.png b/img/gbuffer_normal.png
diff --git a/img/gbuffer_pos.png b/img/gbuffer_pos.png
diff --git a/img/gbuffer_t.png b/img/gbuffer_t.png
diff --git a/img/naive.png b/img/naive.png
diff --git a/img/no.png b/img/no.png
diff --git a/img/number_of_iteration.png b/img/number_of_iteration.png
diff --git a/scenes/cornell.txt b/scenes/cornell.txt
@@ -52,7 +52,7 @@ EMITTANCE   0
 CAMERA
 RES         800 800
 FOVY        45
-ITERATIONS  5000
+ITERATIONS  10
 DEPTH       8
 FILE        cornell
 EYE         0.0 5 10.5

diff --git a/scenes/cornell_ceiling_light.txt b/scenes/cornell_ceiling_light.txt
@@ -52,7 +52,7 @@ EMITTANCE   0
 CAMERA
 RES         800 800
 FOVY        45
-ITERATIONS  10
+ITERATIONS  20
 DEPTH       8
 FILE        cornell
 EYE         0.0 5 10.5

diff --git a/scenes/my_cornell.txt b/scenes/my_cornell.txt
@@ -0,0 +1,148 @@
+// Emissive material (light)
+MATERIAL 0
+RGB         1 1 1
+SPECEX      0
+SPECRGB     0 0 0
+REFL        0
+REFR        0
+REFRIOR     0
+EMITTANCE   5
+
+// Diffuse white
+MATERIAL 1
+RGB         .98 .98 .98
+SPECEX      0
+SPECRGB     0 0 0
+REFL        0
+REFR        0
+REFRIOR     0
+EMITTANCE   0
+
+// Diffuse red
+MATERIAL 2
+RGB         .85 .35 .35
+SPECEX      0
+SPECRGB     0 0 0
+REFL        0
+REFR        0
+REFRIOR     0
+EMITTANCE   0
+
+// Diffuse green
+MATERIAL 3
+RGB         .35 .85 .35
+SPECEX      0
+SPECRGB     0 0 0
+REFL        0
+REFR        0
+REFRIOR     0
+EMITTANCE   0
+
+// Specular white 1
+MATERIAL 4
+RGB         .98 .98 .98
+SPECEX      0
+SPECRGB     .98 .98 .98
+REFL        1
+REFR        0
+REFRIOR     0
+EMITTANCE   0
+
+// Specular white 2
+MATERIAL 5
+RGB         .98 .98 .98
+SPECEX      0
+SPECRGB     .98 .98 .98
+REFL        0.5
+REFR        0
+REFRIOR     0
+EMITTANCE   0
+
+// Specular white 3
+MATERIAL 6
+RGB         .98 .98 .98
+SPECEX      0
+SPECRGB     .98 .98 .98
+REFL        1
+REFR        1
+REFRIOR     1.5
+EMITTANCE   0
+REFRRGB     .98 .98 .98
+
+// Camera
+CAMERA
+RES         800 800
+FOVY        45
+ITERATIONS  10
+DEPTH       8
+FILE        cornell
+EYE         0.0 5 10.5
+LOOKAT      0 5 0
+UP          0 1 0
+LENS        0.025
+FOCAL       10
+
+
+// Ceiling light
+OBJECT 0
+cube
+material 0
+TRANS       0 10 0
+ROTAT       0 0 0
+SCALE       3 .3 3
+
+// Floor
+OBJECT 1
+cube
+material 1
+TRANS       0 0 0
+ROTAT       0 0 0
+SCALE       10 .01 10
+
+// Ceiling
+OBJECT 2
+cube
+material 1
+TRANS       0 10 0
+ROTAT       0 0 90
+SCALE       .01 10 10
+
+// Back wall
+OBJECT 3
+cube
+material 1
+TRANS       0 5 -5
+ROTAT       0 90 0
+SCALE       .01 10 10
+
+// Left wall
+OBJECT 4
+cube
+material 2
+TRANS       -5 5 0
+ROTAT       0 0 0
+SCALE       .01 10 10
+
+// Right wall
+OBJECT 5
+cube
+material 3
+TRANS       5 5 0
+ROTAT       0 0 0
+SCALE       .01 10 10
+
+// Sphere 1
+OBJECT 6
+sphere
+material 4
+TRANS       -3 2 -1
+ROTAT       0 0 0
+SCALE       3 3 3
+
+// Sphere 2
+OBJECT 7
+sphere
+material 5
+TRANS       0 4 -1
+ROTAT       0 0 0
+SCALE       3 3 3
diff --git a/src/denoise.h b/src/denoise.h
@@ -0,0 +1,3 @@
+#pragma once
+
+