Real time optical wave field propagation

[@AndrewTSq]

I am not sure I understood a single thing of this lol, but the things I think I understood is cool, and I hope to see more.

[@mrdr9534]

Nooo you shouldn't thank us for watching, We should thank You for taking the time and effort of making and sharing this.... !!! Best regards.

[@danoncho]

I love to digest such complicated information from very experienced people... Especially about optics, as I am a photographer. It always amazes me how much cool stuff was already explored, calculated, used in our "day-to-day" world. You have a very deep mind to understand AND explain all of that. Wonderful job, Alexander! 👍

[@rayz0101]

God I'm envious and excited talented people like you exist and are willing to share their passion.

[@modus_ponens]

I have never understood holograms, but as you said it, wave equations are reversible, and that with your illustration, it made perfect sense.

[@SaidMetiche-qy9hb]

Science is so sweet

[@tamakatsui]

That's so interesting, thanks for making a video to show us.

[@AngelsNeverFade]

That is seriously amazing!

[@colinbrown7947]

Amazing

[@iestynne]

This is amazing. If you run the field forwards, then backwards again to the original image plane, is there any quality loss due to numerical limits? You may enjoy the Huygens Optics channel btw, he discusses light optics in fascinating detail.

[@Alexander_Sannikov]

You do get physically accurate artifacts, namely depth of field. And the larger the field you propagate, the less depth of field blurring you get, which corresponds to having a larger aperture. I already watched all of Huygens Optics videos.

[@SeanStClair-cr9jl]

This is awesome. I've imagined something like this - calculating a 3D field of light in a scene and moving a 2D plane through it to represent the player's screen. This is wild!! Have you experimented with actually using this demo in any sort of renderer?

[@Alexander_Sannikov]

See the gif in my community posts.

[@SeanStClair-cr9jl]

​@@Alexander_Sannikov !! Will do, thanks for the response! I just saw one of your POE talks online so I'm a bit star struck lol.

[@thisiself]

нихера себе, розовый заяц!

[@thisiself]

нихера себе, со звуком!

[@YYYValentine]

How is the wave field volume precalculated? What is in the voxels? Just scalars, or something else?

[@Alexander_Sannikov]

wave field comes from just a scalar image

[@YYYValentine]

I not really understand this.. is it a precomputed volume? Or it is a real time propagation in the volume?

[@Alexander_Sannikov]

@@YYYValentine everything in this demo is realtime

[@henriksundt7148]

@@YYYValentine He is using a GPU with ray tracing cores (RT cores). This way it can be visualized in real time.

[@abigchair]

So cool.

[@stimpyfeelinit]

dayyyuummmm

[@mykhailomoroz5296]

An interesting use case for FFT's

[@YYYValentine]

How is ftt used here?

[@mykhailomoroz5296]

@@YYYValentineyou need to transform the image into spectral domain to be able to transform how it behaves I guess

[@alexandersmolyakov1886]

Русские субтитры будут?)

[@Alexander_Sannikov]

Следующее видео по оптике сделаю на русском. Тем временем видос про двигатель стирлинга опубликовал, он тоже на русском :)

[@alexandersmolyakov1886]

@@Alexander_Sannikov ну тогда подпишусь

[@mattwillis3219]

do a convolution of a scene where you find wally

[@soroushshahnia]

Good job, what software you are using?

[@Alexander_Sannikov]

none, i wrote it on c++/vulkan

[@soroushshahnia]

@@Alexander_Sannikov amazing, did you use a template for your code or published your work/code anywhere?

[@Alexander_Sannikov]

@@soroushshahnia i'm not sure what you mean by code template, but I wrote this program myself from scratch, using only basic lowlevel libraries like spirv-cross for spirv reflection data, imgui for the UI and bunch of similar ones. You can find the source code of this testbed on github, look up Raikiri/LegitEngine, but it does not have any of the wave propagation code because it's highly experimental.

[@SaidMetiche-qy9hb]

أنت تذكرني بإبن هيثم ممكن تكون إبن هيثم الروسي هههه

[@pedroantonio5031]

Is it related to gaussian splatting technology?

[@theneonbop]

I don't think so. Gaussian splatting is used for scene reconstruction, this is more for simulation of light effects

[@tommos1]

this is way too 5head for me.