Build your own Document Scanner(CamScanner) from scratch in Python

I've always been fascinated by CamScanner (an app that is used to scan documents and also enhance their quality) so now we're going to learn how to build your very own Document Scanner in Python with just OpenCV!

I didn't build this from the top of my head, these are few excellent documentations and tutorials that I had referred :
4) Canny Edge Deetction

5)Contours Documentation :

and yea subscribe!

[suyashvashishtha]

Bro you have my respect... jab bhi kisi indian ko programming tutoprial dete dekhta hu dil khush ho jata hai .. love u bhai

[oundhakar]

Awesome, no nonsense and straight to the point. Excellent work.

[HostDotPromo]

This is awesome dude. Would love to see more tuts from you in the future 👍

[CristYaghjian]

what you have done is great job dude, I appreciate that

[pankajt]

Aditya ...do yo take projects for development?

[akashpb]

Bahut achey bhai !! chamaktey raho ! :)

[kooser]

Good tutorial, clear and concise. Thanks.

[myprojects-dfol]

Is the camera module or webcam you used for the video

[JibinPhiliposeDGameR]

Any chance we can run this natively on Android?

[snehitvaddi]

*Problem* : *ValueError: not enough values to unpack (expected 3, got 2)*
*Solution* :
Refer to this thread. Give a like over there if your problem solved.😉👍
if your using OpenCV version>=4.0.0 just use two parameters like " contours, hierarchy " not " image, contours, hierarchy "

[ArjunKocher]

The code doesn’t with other images.. only with the test image. Also, the final image wasted grayscaled; but that can be adjusted. Although this doesn’t work with every image.

[mayur]

hey, Aditya brilliant work is done. I just want to ask you after completing scanning if I want to extract that scanned data. how will extract that data ? have you made any video on that?

[marcelmuller]

What does the Mapper.mapp() function? How can I implement it in C#? Please help!

[Alina-ervv]

cv2, in the recent update has just been returning contours and hierarchy, as shown under:
contours, hierarchy = cv2.findContours(edged, cv2.RETR_LIST, cv2.CHAIN_APPROX_SIMPLE)

[mvanditha]

You're Awesome! Thank you much <3

[gopalsahni]

I am getting exact output image till canny edge detection but not getting scanned image after perspective transformation. What should I do now?

[devloper_hs]

Pycharm not recognising open cv2 as a module...

What to do bro

[AnuranPaul]

Can we apply OCR to the output image for text recognition?

[vishalnk]

Bro i get an error name 'np' is not defined can anyone help In the line of pts=np.float32([[0, 800]])

[ramsekargnanasekar]

Im getting “”no module named ‘numpy’ “”” what to do now