org.openimaj.image.processing.transform

Class SkewCorrector

java.lang.Object

org.openimaj.image.processing.transform.SkewCorrector

All Implemented Interfaces:

ImageProcessor<FImage>, Processor<FImage>

public class SkewCorrector
extends Object
implements ImageProcessor<FImage>

Uses the Hough transform (for lines) to attempt to find the skew of the image and unskews it using a basic skew transform.

Author:

David Dupplaw (dpd@ecs.soton.ac.uk)

See Also:

"http://javaanpr.sourceforge.net/anpr.pdf"

Created:

12 Aug 2011

Constructor Summary

Constructors

Constructor and Description
SkewCorrector()

Method Summary

Modifier and Type	Method and Description
void	processImage(FImage image) Process an image.
void	setAccuracy(int accuracy) Set the accuracy of the skew corrector.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SkewCorrector

public SkewCorrector()

Method Detail

processImage

public void processImage(FImage image)

Process an image. Implementing classes must alter the image passed in-place or assign the output to the input using Image.internalAssign(Image).

Specified by:

processImage in interface ImageProcessor<FImage>

Parameters:

image - The image to process in place.

See Also:

ImageProcessor.processImage(org.openimaj.image.Image)

setAccuracy

public void setAccuracy(int accuracy)

Set the accuracy of the skew corrector. The value here is a multiplier for the number of degrees that are in a single bin of the Hough Transform for lines. The default is 1 which means that the Hough Transform can detect 360 degrees. If the accuracy is set to 2, the Hough Transform can detect 720 distinct directional angles (accuracy is half a degree).

Parameters:

accuracy - The accuracy of the skew corrector