Image preprocessing

Upon receiving images, FlexiCapture Engine performs a range of image preprocessing functions to improve the quality of document images for further recognition or archiving:

Automated image de-skewing

It is an essential document imaging function which is applied to scanned documents requiring the compen sation for image skew. It does not require leading edge borders or lines. FlexiCapture Engine provides several methods for de-skewing images: with pairs of black squares, lines or lines of text.

Image despeckling (or image clean-up)

When scanning poor to medium quality documents, you may get very noisy images with lots of dots or speckles on them. These speckles, when they appear close to the letters or numbers, may affect the quality of OCR. This feature removes such noise. The size of the speckles to be removed may be specified by the user. Can be applied to an image as well as to any individual block (or zone) of the image.

Mirroring and inverting 

There is an option to mirror the prepared image around its vertical axis. Also it is possible to invert colors of the prepared image. By default, all these properties are set to FALSE.

Color filtering

Intelligent Background Filtering and Stamp Removal are particularly helpful for extracting data from documents printed on colour or textured backgrounds.  



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