com.google.zxing.common.detector
Class MonochromeRectangleDetector

java.lang.Object
  com.google.zxing.common.detector.MonochromeRectangleDetector

public final class MonochromeRectangleDetector
extends Object

A somewhat generic detector that looks for a barcode-like rectangular region within an image. It looks within a mostly white region of an image for a region of black and white, but mostly black. It returns the four corners of the region, as best it can determine.

Author:

Sean Owen

Constructor Summary

MonochromeRectangleDetector(BitMatrix image)

Method Summary

ResultPoint[]

detect() Detects a rectangular region of black and white -- mostly black -- with a region of mostly white, in an image.

Methods inherited from class java.lang.Object

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

Constructor Detail

MonochromeRectangleDetector

public MonochromeRectangleDetector(BitMatrix image)

Method Detail

detect

public ResultPoint[] detect()
                     throws NotFoundException

Detects a rectangular region of black and white -- mostly black -- with a region of mostly white, in an image.

Returns:

ResultPoint[] describing the corners of the rectangular region. The first and last points are opposed on the diagonal, as are the second and third. The first point will be the topmost point and the last, the bottommost. The second point will be leftmost and the third, the rightmost

Throws:

NotFoundException - if no Data Matrix Code can be found