The Math behind QR code, what happens inside there?

Рет қаралды 43,264

Professor Julio Lombaldo

Жыл бұрын

What exactly happens inside QR Code?!
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Пікірлер: 55

@EricsWormPlayground 9 ай бұрын

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

@tongsllc 11 ай бұрын

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

@ProfessorJulioLombaldo 11 ай бұрын

It’s a great way to start 😊

@amirs9852 Жыл бұрын

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

@ProfessorJulioLombaldo 11 ай бұрын

Thanks for your opinion

@ronytesler Жыл бұрын

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

@jjsara123 Жыл бұрын

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!

@LeslieSolorzanov 9 ай бұрын

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

@simatwokirwa4500 29 күн бұрын

Very educative ...easy to understand especially if you know basic maths including binary digits ... thanks a lot.

@fabriciobleach Жыл бұрын

Muito interessante, professor! Obrigado.

@cheese-power 11 ай бұрын

What are you talking about? 😢

@artvizualvideos 2 ай бұрын

Thanks for the explantion

@IONYVDFC 5 ай бұрын

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 3 ай бұрын

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

@z-h-d 10 ай бұрын

Louder!

@techgalaxy100 Жыл бұрын

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

@ProfessorJulioLombaldo 11 ай бұрын

Depends of data kind in small right below place

@Crazytesseract 2 ай бұрын

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.

@justblue425 Жыл бұрын

thanks professor. :)

@ProfessorJulioLombaldo Жыл бұрын

You are welcome 😊

@buiminhmusic2935 Жыл бұрын

Thank you sir

@ProfessorJulioLombaldo 11 ай бұрын

You are welcome 🤗

@atuldangi 7 ай бұрын

Superb sir. Very well explained.

@ProfessorJulioLombaldo 7 ай бұрын

thanks

@faizan27984 7 ай бұрын

Atul bhangi 👌

@brentcoates5470 5 ай бұрын

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

@garydunken7934 3 ай бұрын

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

@ullianoliveira6135 5 күн бұрын

english is not his first language, it's ok

@risulshakil2879 4 ай бұрын

nice vedio, so educative ❤️❤️

@darrel604 Жыл бұрын

@ 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.

@udaykiranthummala150 9 ай бұрын

Nice presentation

@ProfessorJulioLombaldo 9 ай бұрын

Thanks

@RWL719 Жыл бұрын

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

@matthewoxley8289 4 ай бұрын

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

@hildareveron6858 Ай бұрын

I understand one thing about QR CODES now😂 you have to understand its a square within a ⬛ square😂😂😂😂😂😂😂

@putinsgaytwin4272 10 ай бұрын

Nice animation

@ProfessorJulioLombaldo 10 ай бұрын

Thanks ;)

@donwald3436 Жыл бұрын

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 6 ай бұрын

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

@donwald3436 6 ай бұрын

@@YerryBalenzuela No, I know why.

@RP-dy5mu 3 ай бұрын

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

@jardelfarias2009 Жыл бұрын

Professor tem este video em português?

@ProfessorJulioLombaldo Жыл бұрын

Ainda não, mas farei também

@gabrielmoranneves Жыл бұрын

@@ProfessorJulioLombaldo se colocar legendas já está ok

@hikatosumi7143 3 ай бұрын

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

@blugreen99 4 ай бұрын

@stanzinnorboo7083 5 ай бұрын

Where's the math?

@SLowFatMilk 3 ай бұрын

21x21 matrix how could u not see it 🙄

@user-wo8dr1jr1g 7 ай бұрын

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

@shisuboyz 5 ай бұрын

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

@unknown-yo2tx 11 ай бұрын

I understand nothing new

@ottik5 3 ай бұрын

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?