devliving.online.cvscanner.util

Class CVProcessor

java.lang.Object

devliving.online.cvscanner.util.CVProcessor

public class CVProcessor
extends java.lang.Object

Created by Mehedi on 9/20/16.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CVProcessor.Quadrilateral

Field Summary

Fields

Modifier and Type	Field and Description
static float	PASSPORT_ASPECT_RATIO

Constructor Summary

Constructors

Constructor and Description
CVProcessor()

Method Summary

Modifier and Type	Method and Description
static Mat	adjustBirghtnessAndContrast(Mat src, double clipPercentage)
static Mat	buildMatFromYUV(byte[] nv21Data, int width, int height)
static Rect	detectBorder(Mat original)
static java.util.List<MatOfPoint>	findContours(Mat src)
static java.util.List<MatOfPoint>	findContoursAfterClosing(Mat src)
static java.util.List<MatOfPoint>	findContoursForMRZ(Mat src)
static Mat	fourPointTransform(Mat src, Point[] pts)
static Point	getPointOnLine(Point origin, Point another, double distance)
static CVProcessor.Quadrilateral	getQuadForPassport(java.util.List<MatOfPoint> contours, Size srcSize, int frameSize)
static CVProcessor.Quadrilateral	getQuadForPassport(Mat img, double frameWidth, double frameHeight)
static CVProcessor.Quadrilateral	getQuadrilateral(java.util.List<MatOfPoint> contours, Size srcSize)
static double	getScaleRatio(Size srcSize)
static Point[]	getUpscaledPoints(Point[] points, double scaleFactor)
static boolean	isInside(Point[] points, Size size)
static boolean	isInsideBaseArea(Point[] rp, Size size)
static boolean	isLargeEnough(Point[] points, Size size, double ratio)
static Mat	sharpenImage(Mat src)
static Point[]	sortPoints(Point[] src)

Methods inherited from class java.lang.Object

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

Field Detail

PASSPORT_ASPECT_RATIO

public static final float PASSPORT_ASPECT_RATIO

See Also:

Constant Field Values

Constructor Detail

CVProcessor

public CVProcessor()

Method Detail

buildMatFromYUV

public static Mat buildMatFromYUV(byte[] nv21Data,
                                  int width,
                                  int height)

detectBorder

public static Rect detectBorder(Mat original)

getScaleRatio

public static double getScaleRatio(Size srcSize)

findContours

public static java.util.List<MatOfPoint> findContours(Mat src)

findContoursForMRZ

public static java.util.List<MatOfPoint> findContoursForMRZ(Mat src)

findContoursAfterClosing

public static java.util.List<MatOfPoint> findContoursAfterClosing(Mat src)

getQuadForPassport

public static CVProcessor.Quadrilateral getQuadForPassport(Mat img,
                                                           double frameWidth,
                                                           double frameHeight)

getPointOnLine

public static Point getPointOnLine(Point origin,
                                   Point another,
                                   double distance)

getQuadrilateral

public static CVProcessor.Quadrilateral getQuadrilateral(java.util.List<MatOfPoint> contours,
                                                         Size srcSize)

getQuadForPassport

public static CVProcessor.Quadrilateral getQuadForPassport(java.util.List<MatOfPoint> contours,
                                                           Size srcSize,
                                                           int frameSize)

sortPoints

public static Point[] sortPoints(Point[] src)

isInsideBaseArea

public static boolean isInsideBaseArea(Point[] rp,
                                       Size size)

isInside

public static boolean isInside(Point[] points,
                               Size size)

isLargeEnough

public static boolean isLargeEnough(Point[] points,
                                    Size size,
                                    double ratio)

getUpscaledPoints

public static Point[] getUpscaledPoints(Point[] points,
                                        double scaleFactor)

fourPointTransform

public static Mat fourPointTransform(Mat src,
                                     Point[] pts)

Parameters:

src - - actual image

pts - - points scaled up with respect to actual image

Returns:

adjustBirghtnessAndContrast

public static Mat adjustBirghtnessAndContrast(Mat src,
                                              double clipPercentage)

sharpenImage

public static Mat sharpenImage(Mat src)