Questions tagged [gaussian-blur]
The gaussian-blur tag has no summary.
21 questions
1 vote
0 answers
44 views
Texture prefiltering for the paper "Real-Time Polygonal-Light Shading Texture"
Recently I tried to implement the paper "Real-Time Polygonal-Light Shading Texture" and was confused by the texture part (sections 5.2 - 5.3). In my understanding, the key is to compute: $$...
- 11
1 vote
0 answers
93 views
What denoising filter gives highest quality for indirect light image?
Some background of my scenario: I have two images of indirect radiance, both are from an animation. I will reproject an pixel from the previous frame to current frame, and I want to do comparisons ...
- 51
1 vote
3 answers
1k views
Blurring image with RGB values without convolving it with a kernel
I'm using an app for face redaction that doesn't allow access to the source code but only allows me to pass pixel values for red, green and blue channel upon which it creates a matrix with the same ...
- 111
4 votes
3 answers
523 views
Texture prefiltering for Linearly Transformed Cosines
I'm implementing Real-Time Polygonal-Light Shading with Linearly Transformed Cosines from Siggraph 2016. I'm stuck on the texture prefiltering (section 5.3). As I understand they use ...
- 606
4 votes
2 answers
1k views
Does a gaussian blur based bloom/glow shader require gamma correction? Any other tips?
Hello I have a simple application with some bright 2d mono-color shapes I am hoping to make appear emissive with a nice glow around them. To do that I am producing multiple gaussian blurs of varying ...
- 1,445
3 votes
0 answers
122 views
Replace a chain of image blurs with one blur
In this question I asked how to implement a chain of blurs in one single step. Then I found out from the gaussian blur page of Wikipedia that: Applying multiple, successive gaussian blurs to an ...
- 131
3 votes
1 answer
171 views
How can I implement a complex sinusoidal function?
The following is the 2d complex sinusoidal function, $u_0$ and $v_0$ represent Fundamental Frequencies in $X$ and $Y$ directions respectively. How can I represent $j$ (imaginary number)? Edit: ...
user464
5 votes
1 answer
152 views
Where are the highlight definitions inside of my shader?
I have a pretty good glow shader going now thanks to some tips from people here. However there are a few things that bother me that could maybe be better. #1 Definition of the particles A lot of ...
- 1,445