Ray Functions for Volume Rendering: A Quick and Convenient Review

[@qudek77]

Thanks man! Very nice summary of volume rendering.

[@BobLaramee]

Thanks for watching.

[@shreeyaksajjan1200]

Thank you for this quick video! I'm reading a computer vision/graphics paper that does 3D reconstruction using volume rendering principles (neural radiance fields) and this helped me understand some of the terminology used there

[@BobLaramee]

Thanks for watching

[@Susuwho]

the most helpful video about computer graphics I found on KZbin

[@BobLaramee]

Thank you Susu. Hope you can check out the rest of the channel.

[@SandipJadhavcctech]

In good webgl/JS library to perform these operations effectively in browser ?

[@BobLaramee]

Yes.

[@devpant7829]

You said you'd be posting references and reading material in comments :(

[@BobLaramee]

Thanks for watching Dev Pant. You don't see the references and reading in the comments?

[@Greenpeas58]

Bob. Dedham is the home of champions.

[@BobLaramee]

Obviously

[@BobLaramee]

I heard Londonderry is the home of Legends.

[@unveil7762]

This was really nice, i am trying to fake volumes in TD, and with no rayTracing sadly. i use camera space and diffrent alpha values of particles based on camera depth and volume data. What i got here is that since anyway i have no rayCasting(TD reneder rasterize) i need to matematically do the ray functions in the volume data and somehow blend the varius pass togheter.ì, so to get the feelings of a volume. Would be really cool to add a 3dTexture with a computeShader to my pipe line. This is still a bit far from my skills 🙂

[@BobLaramee]

Thanks for watching

[@caseydenner1046]

what is the second approach called in the ray sampling approaches? You say it's the simplest, fastest but least accurate but no name is given Very helpful videos for my revision!

[@BobLaramee]

It could be called nearest-neighbor sampling. Glad you find the videos helpful.

[@joshisushant]

simple yet informative.

[@ahmedelhamy1845]

Excellent and simple discussion. Thanks a lot.

[@BobLaramee]

Thanks for watching.

[@СергейФёдоров-щ8ш]

Thx, very nice description!

[@BobLaramee]

Thanks for watching.

[@MaxwellsWitch]

damn.... I never thought of it that way. Thanks, very helpful!

[@BobLaramee]

Glad it helps.

[@ingenuity376]

Thanks a lot. Understood clearly!

[@BobLaramee]

Thanks for watching.

[@ingenuity376]

​@@BobLaramee may be it's very basic question but I want to know from where this ray come from? How data value is stored in the voxel? And how computer sees those voxel data?

[@BobLaramee]

@@ingenuity376 i recommend looking at this lecture for the fundamentals: kzbin.info/www/bejne/poq6ZIGQnMasg9U

[@ingenuity376]

@@BobLaramee So, for 3d, 8 data is stored in the voxel corners beforehand manually in the array, right? From where the ray is cast to volume, source of ray?

[@BobLaramee]

@@ingenuity376 Yes, also see my slide on Cells verses Voxels.

[@naushadturja6547]

thank u

[@peterhayman]

this is so helpful

[@BobLaramee]

Thanks for watching.

[@yitianbao2677]

Great Whiteboard!😆

[@BobLaramee]

It's a good one