❓ Is there anyway to limit the camera recognition area

fe-noob commented 2 years ago

Question

Hi,

I use react-native-vision-camera and vision-camera-code-scanner to scan qrcode.

But i can't find any options to limit the scan area, i don't want the whole area can recognize the code.

There are some solutions for react-native-camera, most of them are to modify iOS/Android code.

Look forward to your reply.

What I tried

No response

VisionCamera Version

2.12.0

Additional information

[ ] I am using Expo
[X] I have read the Troubleshooting Guide
[X] I agree to follow this project's Code of Conduct
[X] I searched for similar questions in the issues page as well as in the discussions page and found none.

mrousavy commented 2 years ago

Hi!

You can shoot a PR to vision-camera-code-scanner to implement this feature.

xulihang commented 2 years ago

I use react-native-svg to draw the scan region and pass the region info to vision-camera-dynamsoft-barcode-reader. Since the plugin supports limiting the area, I just pass the left, right, top, bottom info to it. (Check out the blog for details)

If the barcode reader doesn't support this, we may need to crop the image by ourselves.

mrousavy / react-native-vision-camera