imagingbook.lib.image

Class ImageExtractor

java.lang.Object

imagingbook.lib.image.ImageExtractor

public class ImageExtractor
extends Object

Use to exctract warped images for testing the Lucas-Kanade matcher.

Constructor Summary

Constructors

Constructor and Description
ImageExtractor(ij.process.ImageProcessor I) Creates a new instance of ImageExtractor for the image I.

Method Summary

Modifier and Type	Method and Description
void	extractImage(ij.process.ImageProcessor R, LinearMapping T) Fills the image R from the source image I (referenced by this object).
void	extractImage(ij.process.ImageProcessor R, Point2D[] sourcePnts) Extracts a warped sub-image of the associated target image I, defined by a sequence of 3 or 4 points.
ij.process.ImageProcessor	extractImage(int width, int height, LinearMapping T) Extracts an image R of size width x height from the source image I (referenced by this object).
ij.process.ImageProcessor	extractImage(int width, int height, Point2D[] sourcePnts)
void	setInterpolationMethod(int interpolationMethod)

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageExtractor

public ImageExtractor(ij.process.ImageProcessor I)

Creates a new instance of ImageExtractor for the image I.

Parameters:

I - the target image.

Method Detail

setInterpolationMethod

public void setInterpolationMethod(int interpolationMethod)

extractImage

public ij.process.ImageProcessor extractImage(int width,
                                              int height,
                                              LinearMapping T)

Extracts an image R of size width x height from the source image I (referenced by this object). The image R is extracted from a quadrilateral patch of the source image, defined by the transformation of the boundary of R by T(x).

Parameters:

width - the width of the target image R.

height - the height of the target image R.

T - a LinearMapping object.

Returns:

the extracted image R, which is of the same type as the source image.

extractImage

public ij.process.ImageProcessor extractImage(int width,
                                              int height,
                                              Point2D[] sourcePnts)

extractImage

public void extractImage(ij.process.ImageProcessor R,
                         LinearMapping T)

Fills the image R from the source image I (referenced by this object). The image R is extracted from a quadrilateral patch of the source image, defined by the transformation of the boundary of R by T(x). Grayscale and color images my not be mixed (i.e., R must be of the same type as I).

Parameters:

R - the image to be filled.

T - a LinearMapping object.

extractImage

public void extractImage(ij.process.ImageProcessor R,
                         Point2D[] sourcePnts)

Extracts a warped sub-image of the associated target image I, defined by a sequence of 3 or 4 points. In the case of 3 points in sourcePnts, an AffineMapping is used; with 4 points, a ProjectiveMapping is used. The 3 or 4 points map clockwise to the corner points of the target image R, starting with the top-left corner.

Parameters:

R - the target image;

sourcePnts - an array of 3 or 4 Point2D objects.