Questions tagged [volume-rendering]
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Term confusion about volume scattering
We have two different terms, for example, let's talk about scattering only. Scattering coefficient Scattering cross-section These two terms are supposed to have different physical meaning. I read it ...
How to compute discrete partial derivatives in 3D
I'm supposed to compute partial derivatives for 3D volume rendering (in ray tracing). I'm bad at math and so I can't understand what $f$ is in my case. In reviewing examples, I'm seeing the $f$ ...
How to render and store a color gradient in a ramp texture for 16bit dataset?
I'm working on a scientific visualization project and need to create a transfer function widget. The volume data is either in range 0-255 or it can be 16 bit i.e. <...
What can be reduce in peripheral circle and increase in foveated cirle?
Foveated rendering, is definitely one of the newest fields of real-time graphics rendering. The main goal of foveated rendering is reducing rendering cost to increase frame-rate without perception ...
How to visualize density data as volume using OpenGL?
I have a CT scan of a portion of a human body, with each point describing density. The data file provides X, Y, Z, and density values. I want to know how to visualize this data, using OpenGL or a ...
Euclideon Unlimited Details Voxel Engine Architecture
As I understand Euclideon haven't just rendered voxels for these infamous demos, since the amount of geometry is still too large for the 2010 PC with software raytracer and the model taking whole HDD ...
volume raymarching - aligning sample coords with the 3d texture
I'm implementing a volume raymarcher and the unlit basic version seems to be working fine. This article helped a ton grokking the view-to-volume-space transform: http://www.lebarba.com However, it ...
How to handle different data types (uint8, uint16, float) in Volume Datasets?
So I've written a personal volume renderer which currently visualizes datasets (CT-Scans mostly) that have a .raw extension and the values are in the range ...
Pixelated /aliased /blurry edges in volumetric rendering
I have been trying to implement a simple GPU based volumetric renderer, somewhat similar to described here. I conceptually understand most of the stuff, and implemented some code, but my results are ...
Volume Rendering - Dataset not rendered correctly
So Im trying to implement a Volume Renderer mainly for medical images like CT-scans and MRI images using GPU raymarching. I'm using the book "Real Time Volume Graphics" and this tutorial as a refernce....