Fabric is not rigid and can easily be warped. Thus, it is not a recommended use case for Vuforia.

If the fabric is mounted to a flat surface and thus will not warp, it could be utilized like an image.

Thanks.

Thanks. Let me give it a try.

I have tried this,but thats not working. Is there any different approach?

Please post the image of the fabric you're uploading to Target Manager, or PM it to me. 

My guess is that there is not enough features and/or contrast for the algorithm to extract key points.

Thanks.