Common mistakes to avoid

This article details some of the common mistakes to avoid when using the OCR capability.

The receipt folds are not straightened out

Before taking a picture, try to smooth out the folded receipt. The edges of the receipt should be as straight as possible.

Perspective distortion

If the picture is taken with a noticeable perspective angle, part of the receipt may be too blurred or have too small letters to be recognized efficiently. Try to position the camera so that the receipt in the photo is more like a rectangle than a trapezoid.

Crumpled receipt

Avoid crumpling up the receipt you are going to photograph. The creases damage the printing and make for random shadows which will interfere with OCR.