Datamatrix detection

HI,

I bought H7 plus for datamatrix detection.
But I cant find any datamatrix object.
I try sample Find Data Matrices Example but result is zero.

Can you help me?

what is worng, I tried every resolutions Vga Xvga etc.gray,color etc.

but without results.

Thank you

Try pointing it matrices like these:

https://www.google.com/search?q=data+matrix&rlz=1C1CHBF_enUS763US763&sxsrf=ALeKk03XEYomUHN3CPkOzDNIehd34KqIiQ:1622392952616&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjnl4Hd7PHwAhUWvp4KHX4oBEMQ_AUoAXoECAsQAw&biw=2560&bih=1297

We don’t support these matrixes: https://www.google.com/search?q=data+matrix&rlz=1C1CHBF_enUS763US763&sxsrf=ALeKk03XEYomUHN3CPkOzDNIehd34KqIiQ:1622392952616&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjnl4Hd7PHwAhUWvp4KHX4oBEMQ_AUoAXoECAsQAw&biw=2560&bih=1297#imgrc=PsiABkbaw6k6vM

We do support these: https://www.google.com/search?q=data+matrix&rlz=1C1CHBF_enUS763US763&sxsrf=ALeKk03XEYomUHN3CPkOzDNIehd34KqIiQ:1622392952616&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjnl4Hd7PHwAhUWvp4KHX4oBEMQ_AUoAXoECAsQAw&biw=2560&bih=1297#imgrc=kf7waMNpVK_3UM

My datamatrix is on iron surface not a white paper :).

this is my product where I need read datamatrix:

Ah, yeah, our library won’t handle that directly, you’ll need to binarize the image to black and white.

That’s quite a hard code to read with our code. Our AprilTag library is much better and could 100% handle that. But, were’ just using libdmtx for datamatrix support which is not that great of the library.