Skip to main content
Computer Graphics

Questions tagged [sampling]

Ask Question

The tag has no summary.

93 questions
Newest Active Bountied Unanswered
0 votes
0 answers
56 views

I have confused myself to the point where i dont know what up or down are. I will try to keep things focused, but certain decisions may need a paragraph of motivation. For some time now me and a ...
ErikHall's user avatar
  • 121
0 votes
1 answer
88 views

I would like to transfer the display content from computer S (sender) to another computer R (receiver). It is important that this transfer happens as accurately as possible in terms of color. My setup:...
Jaz's user avatar
  • 1
0 votes
1 answer
243 views

In this note, I will argue that the jaggedness observed in rasterized images should not be referred to as aliasing. First, let us agree on a definition: aliasing is the distortion that arises when ...
user29959836's user avatar
  • 9
0 votes
0 answers
44 views

I have been implementing a path tracer - while I initially started the process using a dummy Lambertian diffuse BRDF to focus on the base path tracer, I recently added a microfacet BRDF as an option. ...
beginnertracer's user avatar
  • 1
1 vote
2 answers
99 views

When I was studying a code base of path tracing implementation (done in GLSL), I notice the author returned a pdf of generated camera ray: ...
Victor Li's user avatar
  • 21
2 votes
1 answer
85 views

I'm looking at sampling a spherical light source, which may be partially occluded by the plane of the geometry. I've implemented a detection for this case, and skipped sampling if it's all occluded, ...
Puppy's user avatar
  • 167
3 votes
1 answer
338 views

I've noticed that my implementation of GGX VNDF sampling produces quite a lot of bad samples (below the hemisphere). When such a sample occurs, I terminate the ray, leading to an immediate black pixel....
Tom Clabault's user avatar
  • 301
1 vote
1 answer
99 views

I'm currently trying some things with transmittance estimators in PBRT and I have implemented the following paper: Unbiased Ray-Marching Transmittance Estimator. This method assumes that two points $x$...
Matthias K.'s user avatar
  • 36
1 vote
1 answer
95 views

If in the path tracing use case, I have some sampling strategies to sample a scattering direction in a 2D space ($\theta, \phi$). Of course, I need to convert it to a 3D direction vector (with length ...
Enigmatisms's user avatar
  • 1,462
1 vote
0 answers
44 views

I am looking for an algorithm (also ideas on possible directions are appreciated) which is able to compute the distribution of ellipses on a 2D surface in order to reach a good degree of covering. I ...
StefanoScolari's user avatar
  • 11
0 votes
1 answer
297 views

I'm trying to make intuitive sense of the rendering equation and so I'm trying to work out a trivial example by hand, though ultimately I'm just trying to understand how monte carlo importance ...
Chris Gnam's user avatar
  • 319
0 votes
1 answer
259 views

My understanding is that path tracers deal with radiance because radiance is constant along a ray. You simply go through and evaluate the light transport equation: $$ L_o(p, \omega_o) = L_e(p,\...
Chris Gnam's user avatar
  • 319
1 vote
1 answer
369 views

I'm building a little 2D graphics library in Rust/WGPU as a means to learn graphics programming. I want to draw an outline around a shape and specify the outline's color. All of my shapes have a ...
junglie85's user avatar
  • 157
1 vote
0 answers
221 views

Equiangular sampling is a sampling method for point (sphere) emitter in scattering medium. While it claims to be very efficient when dealing with point (sphere) emitter in scattering medium (see this ...
Enigmatisms's user avatar
  • 1,462
2 votes
1 answer
175 views

I am trying to implement a simple shader. A round ball object is rendered with uniform albedo and I noticed some strange white spots on the outputs. I perform importance sampling with 512 light ...
Ivan's user avatar
  • 121

15 30 50 per page
1
2 3 4 5
…
7