Method and device for correcting image askew

A technology for objects in images, applied in the field of preprocessing equipment, can solve problems such as object skew
CN1519768AInactive Publication Date: 2004-08-11SAMSUNG ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
SAMSUNG ELECTRONICS CO LTD
Publication Date
2004-08-11
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

Disclosed is a device for correcting a skew of an object in an image. The device comprises an input part for receiving an image; a binarization part for binarizing pixels of the image into pixels having brightness values for character pixels and background pixels; a candidate stripe generation part for generating candidate stripes by performing dilation on character regions of the binarized image; a stripe classification part for classifying candidate stripes having predetermined eccentricity and blob size or above among the candidate stripes, as valid stripes; a skew angle decision part for calculating direction angles of the classified stripes, and deciding a direction angle having the largest count value as a skew angle; and a skew correction part for correcting a skew of an image by rotating the mage by the skew angle.
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Description

technical field

[0001] The present invention generally relates to a preprocessing device and method for recognizing image characters, and more particularly to a device and method for correcting object skew in an input image before recognizing characters in the image. Background technique

[0002] Typically, preprocessing operations are performed to recognize glyphs. The "pre-processing operations" refer to operations performed on the image prior to recognizing characters in the image. Image preprocessing operations may include operations for determining whether an input image is suitable for character recognition, operations for correcting object skew in the input image, operations for appropriately correcting the size of the input image, and binarizing an image signal (ie, converting the image function into a binary image) so that the characteristics of the image signal can be identified.

[0003] Devices for recognizing characters in images typically recognize characters...

Claims

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