Search found 4 matches

by emwiceo
Wed Jan 13, 2021 2:57 pm
Forum: Technical Discussion
Topic: Unstable QR code detection
Replies: 7
Views: 110

Re: Unstable QR code detection

Yes, I need QR detector for my manipulator project, please shedule correction.
QR codes attached.
Thank you!
by emwiceo
Tue Jan 12, 2021 3:47 am
Forum: Technical Discussion
Topic: Unstable QR code detection
Replies: 7
Views: 110

Re: Unstable QR code detection

With more light the maximum distance increased in 5-7cm (was 20cm, now 25-27), BUT instability not changed, and persists over the all range of distances. If I will decrease the distance, the detection quality is not increasing, and stays poor even if the distance is small - pic attached. I am very i...
by emwiceo
Mon Jan 11, 2021 3:46 pm
Forum: Technical Discussion
Topic: Unstable QR code detection
Replies: 7
Views: 110

Re: Unstable QR code detection

No, the problem is in something else. Here are single isolated QR code. It is simple, version 1 => its resolution is 21x21 pixels. Each pixel of QR code overlaps approximately 4 pixels of camera. It is 2 times more then minimum needed by Nyquist theorem. But the detection rate is very low! So, the c...
by emwiceo
Thu Jan 07, 2021 4:01 pm
Forum: Technical Discussion
Topic: Unstable QR code detection
Replies: 7
Views: 110

Unstable QR code detection

Hello guys! Thanks for this masterpiece - H7 board! I am not satisfied with stability of QR code detector from Examples. Both, zoom and with_lens_correction. Big low level QR codes printed on paper (more than 2cm rectangle size - see pic attached), but detection stability is very poor. Only sometime...

Go to advanced search