Data capture, character recognition OCR ICR OMR CHR BCR, image processing, forms data capture, document indexing, automatic data extraction Data capture, character recognition OCR ICR OMR CHR BCR, image processing, forms data capture, document indexing, automatic data extraction

Deskew

Deskew

To documnents acquisition frequently use fast professional scanner equipped with an automatic document feeder (ADF). For the inevitable mechanical tolerances and the low stiffness of the paper is normal for document images occur slightly tilted to the right or left instead of perfectly straight and aligned with the horizontal and vertical axes. The technical term Anglo-Saxon commonly used to refer to this inclination is called skew, which literally means dependece, and that usually does not exceed + / 5 °. The operation of slope correction, namely straightening the image, then is called a deskew. This correction can now be performed autonomously by software without human intervention: the subsystem of image processing responsible for this activity analyzes the image to evaluate entities of the angle of inclination so that it can properly rotate it to make it perfectly straight, correcting the defect introduced by the scanning. The most effective tools available today manage to contain the processing time in fractions of a second and to get really high-accuracy, reaching even to 1/100 of a degree, at the same time being able to work not only on monochrome images, but also images gray-scale and color.

With the deskew can automatically straighten a sloped image: on the left the original image on the right that processed.
With the deskew can automatically straighten a sloped image: on the left the original image on the right that processed.
For more information on the Deskew technology, it is worthwhile to know how and know our solutions that implement it, you can send us an e-mail to informazioni@recogniform.it or fill in the form below.


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