Paper from a few years ago comparing Google's OCR system to commercially available benchmarks: http://www.educatingsilicon.com/wp-content/uploads/2013/10/photo

Paper from a few years ago comparing Google's OCR system to commercially available benchmarks: http://www.educatingsilicon.com/wp-content/uploads/2013/10/photoocr_iccv_paper.pdf http://www.educatingsilicon.com/wp-content/uploads/2013/10/p... A lot better for text in photographs. Comparison might be different on dense document text though.