The Math behind QR code, what happens inside there?

What exactly happens inside QR Code?!
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[@tongsllc]

I didn’t understand anything you said. I only understood the matrix is 21 x 21.

[@ProfessorJulioLombaldo]

It’s a great way to start 😊

[@EricsWormPlayground]

Wow, this was awful, like listening to a high guy explain QR codes, never getting to any point.

[@jjsara123]

what on earth was the point of the first 2:20? I though it was going to be an interesting fact that the positioning block was a ratio of the overall dimesions. Nope!

[@ronytesler]

You forgot the message length indicator (10 bits for version 1) above the encoding indicator.

[@amirs9852]

Please no background music... thank you for the Video!

[@ProfessorJulioLombaldo]

Thanks for your opinion

[@cheese-power]

What are you talking about? 😢

[@donwald3436]

It's like you're reading notes in point form except you've erased all the headings. What a ramble. I feel sorry for your students.

[@YerryBalenzuela]

You ever wonder why everyone says you’re not likable?

[@donwald3436]

@@YerryBalenzuela No, I know why.

[@RP-dy5mu]

@@YerryBalenzuela Probably because he says it like he sees it, in a world of snakes who pretend to be kind.

[@LeslieSolorzanov]

This is a very nice illustration but it's not the math 😅 but still super cool. Thanks

[@techgalaxy100]

Wonderful!! Thanks. How would a whole URL be saved in that small amount of data squares ? Any video on that ? Thanks

[@ProfessorJulioLombaldo]

Depends of data kind in small right below place

[@IONYVDFC]

I think I was mislead by the title of the video 😵‍💫A lot of info about QR graphics representation but nothing about the math.

[@SLowFatMilk]

the math in this video is that its a 21x21 matrix duhh

[@darrel604]

@ 7:37 I believe your final read is incorrect based on the keep/invert rules. (Row 1, Block 5) should be white instead of black.

[@Crazytesseract]

Format information, has a BCH code for error correction. The data bytes block have Reed Solomon codes for error correction. And that is the main math in the QR codes. There is other too.

[@fabriciobleach]

Muito interessante, professor! Obrigado.

[@atuldangi]

Superb sir. Very well explained.

[@ProfessorJulioLombaldo]

thanks

[@faizan27984]

Atul bhangi 👌

[@jardelfarias2009]

Professor tem este video em português?

[@ProfessorJulioLombaldo]

Ainda não, mas farei também

[@gabrielmoranneves]

@@ProfessorJulioLombaldo se colocar legendas já está ok

[@hikatosumi7143]

So I finally know it’s 21 by 21 My question is how is that possible?

[@brentcoates5470]

For example for example for example for example for example for example this is horrible

[@garydunken7934]

Haha... I was wondering about that too and looking in the comment to see if anyone noticed. Honestly, I found the explanation confusing. :(

[@justblue425]

thanks professor. :)

[@ProfessorJulioLombaldo]

You are welcome 😊

[@RWL719]

Sorry I didn't learn any math on how QR codes works. I'm assuming over a billion people could be assigned a code and they would all be different.... looking for that kind of math

[@artvizualvideos]

Thanks for the explantion

[@buiminhmusic2935]

Thank you sir

[@ProfessorJulioLombaldo]

You are welcome 🤗

[@z-h-d]

Louder!

[@udaykiranthummala150]

Nice presentation

[@ProfessorJulioLombaldo]

Thanks

[@matthewoxley8289]

I HAVE NEVER ENCOUNTER ANYTHING THAT I COULDNT UNDERSTAND EVEN JUST A VERY LITTLE OF ANYTHING!!! I UNDERSTOOD 21X21. THAT IS IT. I AM EITHER MUCH NOT SMARTER (😊) THAN I FEEL THAT I AM OR THIS VHDEO IS NOT MADE TO EXPLAIN ANYTHING BUT SIMPLY JUST TO RAMBLE AND CONFUSE. THERE IS A VIDEO ABOUT DELTA P THAT IS SUPER FUNNY AND INFORMATIVE. MUCH WATCH

[@risulshakil2879]

nice vedio, so educative ❤️❤️

[@putinsgaytwin4272]

Nice animation

[@ProfessorJulioLombaldo]

Thanks ;)

[@stanzinnorboo7083]

Where's the math?

[@SLowFatMilk]

21x21 matrix how could u not see it 🙄

[@blugreen99]

Ok

[@ottik5]

well, sorry to say this, but this video is for nothing.... Doesn't explain use of mask in detail, doesn't say, how it is read. What will happen, if i want to store binaryx data containing only 0, there are now 4 white squares everywhere, how i can know, which of them is ending?

[@user-wo8dr1jr1g]

Too much "for example", why is that example made?

[@shisuboyz]

Hello sir I have a problem what is fill in the E1,E2,E3,E4.... blocks plz help me

[@unknown-yo2tx]

I understand nothing new

[@canoaslan1011]

just say words, call it a video

[@blugreen99]

Poor explanation very bad english.