Pixel binarization device and method for image processing system

Image analysis – Image enhancement or restoration – Variable threshold – gain – or slice level

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382223, G06K 940

Patent

active

058988009

ABSTRACT:
The present invention relates to an image processing apparatus, and more particularly, to a device and method capable of binarizing pixels by removing an isolated point. The pixel binarization method contemplates the steps of: establishing a local window of pixels including a central pixel and a plurality of neighboring pixels; analyzing the neighboring pixels within the local window and detecting a minimum brightness value and a maximum brightness value exhibited by the neighboring pixels; comparing a brightness value exhibited by the central pixel with the minimum brightness value; and determining the central pixel to be an isolated point and outputting the central pixel as a white pixel when the brightness value exhibited by the central pixel is less than the minimum brightness value.

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