程序包 cc.chungkwong.mathocr.offline.preprocessor

类 ImageUtil

  • public class ImageUtil
extends Object
    作者:
    Chan Chung Kwong

    • 构造器概要

      构造器 
      构造器 说明
      ImageUtil()  

    • 方法概要

      所有方法 静态方法 具体方法 
      修饰符和类型 方法 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

    • 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