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A have a program which detects objects in a video stream, the objects will be markers that will be attached to objects so in effect it is recognising the marker rather than the object itself.

My question is what type of marker would be best for this?

I'm aware that a complex non-repeating object is best but I'm not sure how this translates to practical application. I thought that perhaps a QR code style marker would be good but although it is easily recognised with a very high accuracy rate when I start using multiple QR codes for each object the program is finding it difficult to distinguish between them.

A have a program which detects objects in a video stream, the objects will be markers that will be attached to objects so in effect it is recognising the marker rather than the object itself.

My question is what type of marker would be best for this?

I'm aware that a complex non-repeating object is best but I'm not sure how this translates to practical application. I thought that perhaps a QR code style marker would be good but although it is easily recognised with a very high accuracy rate when I start using multiple QR codes for each object the program is finding it difficult to distinguish between them.

A have a program which detects objects in a video stream, the objects will be markers that will be attached to objects so in effect it is recognising the marker rather than the object itself.

My question is what type of marker would be best for this?

I'm aware that a complex non-repeating object is best but I'm not sure how this translates to practical application. I thought that perhaps a QR code style marker would be good but although it is easily recognised with a very high accuracy rate when I start using multiple QR codes for each object the program is finding it difficult to distinguish between them.

EDIT: As per the first comment I tried the following image but could not get the program to detect it at all.all (It does detect the QR codes fine).