This is the Difference of Gaussians

Рет қаралды 237,754

Жыл бұрын

In the realm of image based edge detection, aesthetically pleasing edges are hard to come by. But, what if we could get stylized edge lines by just blurring our image twice?
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arrow in thumbnail drawn by thlurp
Thanks for watching!
This video is dedicated to my friend, Alotryx.
#acerola #graphics #gamedev #unity3d #graphics #shaders

Пікірлер: 576

@wuketuke6601 Жыл бұрын

Acerola: as you can see, the fine detail gets preserved Me, watching on 144p on mobile: Undoubtedly

@yoavsigler4457 Жыл бұрын

This channel produces consistently entertaining educational videos that feel like total shitposts and I couldn't ask for more

@PropaneWP Жыл бұрын

Agreed. Instead I would like to ask for less goblin sharks.

@priestofhiro Жыл бұрын

@@PropaneWP I would like to ask for more

@scoutgaming737 5 ай бұрын

This channel is the difference of gaussians

@c0d3r1f1c Ай бұрын

Moar dog, plz.

@hwinnemo Жыл бұрын

When you randomly come across a tech channel... Dig the presentation style and watch more... Only to find one of your old papers being the topic covered in the video 🤯 The pronunciation of my name leaves something to be desired, but the rest of the explanation and delivery was something I only wish I would've had the skills or time for back then! Super well done 👏Keep up the good (and entertaining!) work

@Acerola_t Жыл бұрын

omg how flattering, your work is by far my favorite post processing effect I've implemented sorry about pronunciations! I try my best lol

@-Gnarlemagne 9 ай бұрын

This video, particularly the edge tangent flow and line integral convolution, helped me out a tremendous amount with my job, and led to a breakthrough in a problem I was working on. This is particularly surprising, considering my work has nothing to do with video filters - but it's not an exaggeration to say this saved me weeks, maybe months, of fumbling around. Thanks mr aceroller :)

@Acerola_t 9 ай бұрын

omg thanks so much!! I'm glad I could help out.

@beginner1639 7 ай бұрын

Now im very curious to know what was the work. Can you say it?

@Providence83 Жыл бұрын

Finally, a video that explains what the D.O.G. doin'. This video fascinated me as a mechanical engineer to see a different application of all the various math tools we were taught for things like controls and dynamic systems. Everytime a new term I knew came up I got hyped. "We can use this tensor" omg yes! _Sick!_ "and then use these eigenvectors" *YYEEEEEESSS!*

@Acerola_t Жыл бұрын

Glad to know at least 1 viewer knows what a tensor is

@user-me7hx8zf9y Жыл бұрын

PROVIDENCE! it's me frank

@Providence83 Жыл бұрын

@@user-me7hx8zf9y Frank! Wow, fancy you finding me all the way on this other side of the internet. You've always been a man of good taste.

@chromevillager Жыл бұрын

This is the difference of gaussians

@D01Light Жыл бұрын

The difference of gaussians this is

@dogeth4021 9 ай бұрын

Of gaussians the difference this is

@VikalpRajKisku 9 ай бұрын

This Difference is Gaussian of the

@scoutgaming737 5 ай бұрын

Different this of is the Gaussians

@_yuno2223 5 ай бұрын

This is the difference of gaussians

@khing5720 Жыл бұрын

Randomly changing cross hatching direction in real time every frame (or every few frames) might give you an animated look, like its being redrawn or something

@Acerola_t Жыл бұрын

I do think that's the thing that'll really drive the effect home for real time, animating it in a way that doesn't look awful

@khing5720 Жыл бұрын

@@Acerola_t yeah, i wonder if there’s a way to get that kinda worbly line effect that animated objects have when theyre redrawn, in a way that isnt super expensive

@zacharychristy8928 Жыл бұрын

@@khing5720 maybe by selecting the cross hatch direction locally with some kind of continuous but varying noise? Varying the noise parameters could vary the "wobble" effect's intensity and frequency. Maybe you could make it totally random temporally so it looks like it's being re-drawn every frame (or every several frames)

@moth.monster Жыл бұрын

I'd simply make the crosshatch mask an animated loop that wiggles nicely lol

@TroublingMink59 Жыл бұрын

You would probably want to lock the framerate of the changing crosshatch texture to something low, like 12 fps. Maybe make it dependent on a motion vector extracted directly (good luck) or derived from depth & normal buffers.

@smartnube Жыл бұрын

Incredible, you made me interested in signal processing after 2 teachers bored me to death with it

@owa1985 Жыл бұрын

If only your channel existed 15 years ago.

@whannabi Жыл бұрын

@@owa1985this would be too high quality for a channel of that time

@Lance_G Жыл бұрын

You are absolutely crushing the dead center of the "wildly entertaining meets comprehensively informative” Venn Diagram🙌

@chickennugget6684 Жыл бұрын

I feel like some of these DoGs could make a cool horror game setting, the high contrast could lead to interesting atmospheres

@DKarkarov Жыл бұрын

I can only answer this question with "Yes." Thanks to how chonky the Dog is from all those settings, especially double or.... three way dogs, you can get away with forcing a lot of interesting color choices/patterns but there is definitely a lot of fine tuning required. Like many hours of it -_-

@1224chrisng Жыл бұрын

There's a detective game called "Return of the Obra Dinn" with a similar style. I think they use dots and dithering moreso than edge detection

@PauLtus_B Жыл бұрын

@@1224chrisng I really don't think Obra Dinn used DoG's except for maybe some edge detection.

@SamBskate 9 ай бұрын

The intersection between art, math, and computer science here is amazing.

@Kavukamari Жыл бұрын

if you had a quantum computer, you could try all variations of the parameters at once, and then use the quantum reverse fourier transform to extract the one that you think looks the best using a neural network trained on your preferences

@Rudxain 6 ай бұрын

At first I thought this was just an insane joke, but then I realized this could be totally possible! We just need a NN designed for dealing with quantum sines, allowing us to connect it directly to the superposition, no need for FFT!

@mnxs Ай бұрын

As something of a cultured nerd myself, I approve of this technobabble 👍

@araqweyr Жыл бұрын

This is top tier content. I'm eternally grateful for a great knowledge you've provided Acerola. I can't stop thinking of an infinite possibilities this technique provides

@mubashirali4858 Жыл бұрын

i think it'd be super cool to use the vector flow field to drive the rotation for the crosshatching texture, with the first and darkest layers being parallel to the VFF and the additional layers being varied parpendicular angles rather than random rotation. This would give you a more accurate crosshatching pattern that takes form into account rather than just using raw values.

@anonelusive340 Жыл бұрын

I love those references to Tatami Galaxy and Monogatari in the editing of the video! Also the topic is presented in a very clear way, it really makes me want to code it up myself

@zekiz774 9 ай бұрын

Same. Also the whole style is a Monogatari reference and so is the name of the channel

@randomacc1029384756 Жыл бұрын

"in signal processing" triggered my fight or flight

@TheBaxes Жыл бұрын

Love the references to Monogatari series and Tatami Galaxy! And love the use of Persona music too! The explanation is very good too, I should try watching it when my brain isn't melted due to lack of sleep though

@superman39756 Жыл бұрын

What a banger video! Not only did you manage to reteach me complicated topics I had encountered in a more intuitive way, supported by examples, but also you manages to sustain the feel of a casual conversation throughout. What a video. Subscribed.

@jamesweatherwax4444 Жыл бұрын

First video i watched from you. The explanations are technically in depth but still easy to understand. This makes me want to watch more Videos and learn more about the topic. Great work

@AdjectiveObject Жыл бұрын

You're a seriously great communicator. I wish I had this back in my undergrad visual computing classes.

@lydianlights Жыл бұрын

This is awesome! I love how you actually go into the technical details.

@KoshakiDev Жыл бұрын

I love the pencil cross hatch! Please continue making more videos!

@EmanoelQueiroz03 Жыл бұрын

One of my new favorite channels to watch! Funny and educational

@earlycomposer4018 Жыл бұрын

god i just love these videos so much. please keep it up

@mihailkondratyev8435 Жыл бұрын

Wonderful channel! Please keep making these videos!

@IsaMorphic Жыл бұрын

You are special, I enjoy how much you seem to enjoy making these :)

@kartavyavashishtha2881 Жыл бұрын

Amazing! Yeah, that's all I have to say for now - I haven't worked much with this stuff myself, but watching this has made me excited to explore further.

@chloehuppe5962 Жыл бұрын

"It's kinda like the stellaris tech-tree" "Image processing / stellaris" is the intersection of topics I would've expected to see on youtube when I woke up this morning

@storianostorianov3955 Жыл бұрын

Awesome and hilarious explanations of image processing! Congrats!

@gordonlawrenz7635 Жыл бұрын

Thanks man. Had a hard time recently to stay motivated so I started playing around with webGPU and some of your filters as a side project. I'm really having a blast with it thanks to you. Hope you are doing well, bro!

@Acerola_t Жыл бұрын

Thanks! WebGPU is definitely in need of some implementations of these effects

@trevorswope3263 Жыл бұрын

Phenomenal video, one of my favourites of yours yet!

@-mystic-93 9 ай бұрын

Woah. I think that you already have the best stylization! The crosshatch really got me. Incredible work

@DamianReloaded Жыл бұрын

Very clear and amusing explanation. I like the format as well. Keep it up!

@technosyrup Жыл бұрын

I really like the crosshatch and watercolor ones. Your videos are amazing!

@DarkSwordsman Жыл бұрын

I'm only 2:30 in, but holy cow, you have provided so much useful information that is easy to understand. Thank you!

@umbra4540 5 ай бұрын

idk why but the arrow with the transparent background got me better than anything else today. very silly and good comedy

@curiouspers Жыл бұрын

Very cool! Happy holidays!

@naramoro Жыл бұрын

Insane amount of work you did here. Thank you

@needsmoretacos4807 10 ай бұрын

I love your channel! It's so useful as a learning tool to improve my shading ❤

@DonChups Жыл бұрын

Ok, time to playlist your whole channel. Thanks for sharing this.

@jordonwaters9778 Жыл бұрын

Love the videos, keep up the good work

@NoNTr1v1aL Жыл бұрын

Absolutely amazing video! Subscribed.

@sepxviii731 Жыл бұрын

Best video of the holiday so far

@unintendoedconsequences3278 Жыл бұрын

I've spent two days watching this video on loop with the UE4 material editor open. Thank you for this information.

@Acerola_t Жыл бұрын

I'd recommend referencing the paper in my description for a more true to form description of the implementation as I do neglect mild yet important details for the sake of watchability.

@WIZ_LIZ Жыл бұрын

Mad props for using the Sonny Boy OST in the background, that show slapped!

@JepMZ 8 ай бұрын

That's so crazy that artstyle can be defined by equations and numbers. To be able to bridge art and logic is mind blowing

@mrcallum1995 Жыл бұрын

Super interesting stuff! Keep it coming

@jocelynnielsen9154 Жыл бұрын

I liked the charcoal pencil filter best, but it was all very cool! Thank you for another visually and mathematically interesting video!

@_Olaroll Жыл бұрын

Woah, that crosshatching style looked amazing!

@NKCubed Жыл бұрын

crazy dedication man, not sure how many other creators have invented a time machine to improve their stuff, but you're part of a select few

@squdioodellover2589 Жыл бұрын

Calling it the DOG is way funnier to me than it should be. I don't really care about shaders, but calling it the DOG kept me watching. Also loved those transitions, this is a well-made video :)

@derickd6150 5 ай бұрын

That moment at 1:35 with the chicken has me dead. I couldn't believe it. I was genuinely shocked it worked so well and the glasses just add that spice

@Simon_Laserna Жыл бұрын

I think my favorite was the last one, though I think there is a lot more to explore with color which can significantly elevate it for certain use cases. Regardless, awesome video as always!

@RickyDivjakovski 11 ай бұрын

Keep up the good work, i learn so much from you!

@Acerola_t 11 ай бұрын

Thanks so much!!

@yenoice1050 Жыл бұрын

Finally, he’s back

@RemecArt Жыл бұрын

yes

@HBon111 Жыл бұрын

Your passion for this is really showing through. I'll probably subscribe soon, but I'll watch another video or two first.

@infokubarcade Жыл бұрын

I don't regret my follow. Literrally dying under math functions, but you answered so many questions i didn't know that they could have an answer in one go. That's amazing !

@matteobelletti8929 Жыл бұрын

I can't explain why, but this video feels like a masterpiece to me. Great work man, keep it up!

@TMTLive Жыл бұрын

Structuring the video with the tatami galaxy sequence is great

@momo-to5eg Жыл бұрын

i really like your content, please make more of theses, thank you!

@dominiczepeda7798 Жыл бұрын

Bruh. All your videos slap. I have no experience in this field or real understanding of how this stuff works, but your shit makes me laugh, get curious, and wanna try it for myself. I can't support you on patreon, but it'd be worth the money if I had it.

@DorganDash Жыл бұрын

I didn't expect to find so many sonny boy reference in one of your videos. Pure gold.

@C0MPLEXITY Жыл бұрын

Thankyou so much you intelligent gift to us editors and coders. This is ammazing

@fernandaray2054 5 ай бұрын

I don't have enough words or actions left to praise you the minimum satisfactory for that high-quality content. Thank you ❤

@DanLivings Жыл бұрын

This and your video on the Kuwahara filter is really making me wish I had some decent game ideas to try the techniques out on

@fuse625151 Жыл бұрын

Goddamn the videos just get better and better

@keir_uhh Жыл бұрын

On top of the content itself, I always love your title cards!

@keir_uhh Жыл бұрын

woah ok so forget the title card the crosshatching blew me away

@dexterman6361 Жыл бұрын

Holy shit I LOVE the Tatami Galaxy reference :) AMAZING video as always :) Have I told you how amazing you are? Damn dude you're an inspiration! Thanks :)

@Owl90 Жыл бұрын

This is like a video from 2007, I love it so much.

@juanjosoliz7297 8 ай бұрын

Opening ue5 to try implemet this method, i was using normal and depth diference for edge detection but this method is waaay more stylized and cool!! TY

@nabieladrian Жыл бұрын

This popped up in my home feed, and I'm glad it happened.

@TheHoinoel Жыл бұрын

just found this channel. Loving it :)

@Mcbuzzerr Жыл бұрын

This is some of the best content on KZfaq

@dollardrow6097 Жыл бұрын

Every episode are rising my love to math. Thank you for quality content.

@kartanosaka Жыл бұрын

I'm a simple guy. I see Tatami Galaxy, I like.

@matthewschoen9827 4 ай бұрын

This is going in the Chanpions hall of stuff I listen to while drawing. I am enthralled

@pcvsk8 Жыл бұрын

Currently my favorite channel

@mnxs Ай бұрын

I could totally see stuff like this being used for in-game cinematics! Like cutscenes, quick scripted action events, or just stylised screenshots. Could even go as far as a stylistic theme / visual concept for the entire game. In a game, you'd also have things like depth buffers and surface normal differences available to provide a guide for the "true edges", and I wonder if the algorithm could be adapted to use that as a form of guidance/correction.

@ro-ce8vg 8 ай бұрын

here again because my computer vision course brought up the difference of Gaussians, this vid is unironically super helpful for me now

@improvisedengineer Жыл бұрын

This video is my favorite yet

@tefkah Жыл бұрын

that intro is really good

@-vanitas5229 Жыл бұрын

I love your videos,please keep going.

@sno7599 Жыл бұрын

wow. i don't understand shit yet i'm so fucking intrigued. unbelievable how much goes into something i just tick a checkbox for. we really do stand on the shoulders of giants like you.

@uncoherentramblings2826 Жыл бұрын

Blessed be another video!

@Rinruperson Жыл бұрын

despite being Not-Smart about how these worked I had a lot of fun playing around with these before the recent gshade update (rip). putting a dither behind/before them (instead of after them) with the two-point interpolation turned on made for some really interesting results!

@Acerola_t Жыл бұрын

omg I never tried a pre dither, that sounds interesting and yeah hopefully the gshade shader cloning returns, very upsetting.

@Rinruperson Жыл бұрын

@@Acerola_t If you set the amount of colours in the Dither pretty high you can end up with something a bit like a cel-shade oil puddle effect on darker colours and, yeah... hard same. every single preset I have ever made, entirely unusable. feels so bad.

@AmoreLifeDigitalNomads Жыл бұрын

Incredible content!!

@Kavukamari Жыл бұрын

i need to implement this, I've been looking for something like this

@Pipubbles Жыл бұрын

I found your channel with your grass generation video and honestly I am so glad I did. These videos are so interesting. Can the shaders made for the final fantasy game be easily applied to unity scenes and that sort of thing?

@Acerola_t Жыл бұрын

Yeah I render all the image examples in Unity in real time technically, I just blit the images to the Unity viewport and then apply the post processing effects through the camera onRenderImage hook lol The Unity shaders are also linked in the description, but they aren't intended to be used as a production ready asset.

@thedebapriyakar Жыл бұрын

What an absolute goldmine of a channel. Fucking brilliant work 🌟🌟🌟🌟

@filipemecenas Жыл бұрын

Absolutely cool script and edit !!

@natsrome Жыл бұрын

no idea why youtube showed this video to me, but it was fascinating-- great stuff!

@valience1739 Жыл бұрын

I didn't know this was a visual guide to Difference of Gaussians Ultimate.

@jvandy4 Жыл бұрын

An amazing video as always! I have been a big fan of your channel for a while now. I am a university student studying software engineering wanting to get into the video game industry. Your videos have really inspired me to focus my learning into graphics programming. I have tailored my schedule to take as many graphics programming electives as I can, but I wont be taking those courses until fall semester next year. Do you have any advice for me? Was there anything in particular that was really beneficial? Thanks for any advice you give. Your videos are so incredible. Have a happy new year!

@Acerola_t Жыл бұрын

I would just try and do as much in your free time as you can! The classes should help a lot, but what will get you into the industry is personal projects. For instance, my grass was a big portfolio piece that I got asked a lot about during my interviews.