cc.chungkwong.mathocr.offline.preprocessor

类 ImageUtil

java.lang.Object

cc.chungkwong.mathocr.offline.preprocessor.ImageUtil

public class ImageUtil
extends Object

作者:

Chan Chung Kwong

构造器概要

构造器

构造器和说明
ImageUtil()

方法概要

限定符和类型	方法和说明
static int	averageX(long[][] intImg, int width, int height, int i, int j, int dl, int dr) Compute the average x coordinate of nonzero pixels
static int	averageY(long[][] intImg, int width, int height, int i, int j, int dl, int dr) Compute the average y coordinate of nonzero pixels
static long[][]	getIntegralImage(byte[] pixels, int width, int height) Create a integral image
static long[][]	getSquaredIntegralImage(byte[] pixels, int width, int height) Create a squared integral image
static long	windowValue(long[][] intImg, int width, int height, int i, int j, int dl, int dr) Compute the sum of pixels in a window

从类继承的方法 java.lang.Object

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

构造器详细资料

ImageUtil

public ImageUtil()

方法详细资料

getIntegralImage

public static final long[][] getIntegralImage(byte[] pixels,
                                              int width,
                                              int height)

Create a integral image

参数:

pixels - the input grayscale picture

width - the width of the picture

height - the height of the picture

返回:

integral image

getSquaredIntegralImage

public static final long[][] getSquaredIntegralImage(byte[] pixels,
                                                     int width,
                                                     int height)

Create a squared integral image

参数:

pixels - the input grayscale picture

width - the width of the picture

height - the height of the picture

返回:

squared integral image

windowValue

public static final long windowValue(long[][] intImg,
                                     int width,
                                     int height,
                                     int i,
                                     int j,
                                     int dl,
                                     int dr)

Compute the sum of pixels in a window

参数:

intImg - the integral image

width - the width of the picture

height - the height of the picture

i - the x coordinate

j - the y coordinate

dl - left offset

dr - right offset

返回:

the sum

averageX

public static final int averageX(long[][] intImg,
                                 int width,
                                 int height,
                                 int i,
                                 int j,
                                 int dl,
                                 int dr)

Compute the average x coordinate of nonzero pixels

参数:

intImg - the integral image

width - the width of the picture

height - the height of the picture

i - the x coordinate

j - the y coordinate

dl - left offset

dr - right offset

返回:

the sum

averageY

public static final int averageY(long[][] intImg,
                                 int width,
                                 int height,
                                 int i,
                                 int j,
                                 int dl,
                                 int dr)

Compute the average y coordinate of nonzero pixels

参数:

intImg - the integral image

width - the width of the picture

height - the height of the picture

i - the x coordinate

j - the y coordinate

dl - left offset

dr - right offset

返回:

the sum