图像的膨胀处理

1.Dilate.h Dilate.c 为图像膨胀的头文件、核心函数
Dilate.h

#ifndef _DILATE_H_
#define _DILATE_H_

#ifdef __cplusplus
extern "C"
{
#endif
    /*
        *图像膨胀处理
    */
    int dilateFunction(float * inData, float * outData, int dataWidth, int dataHeight, int dilateWidth, int dilateHeight, int channels);

#ifdef __cplusplus
}
#endif
#endif

Dilate.c

#include 
#include 
#include 
#include 
#include "Dilate.h"
#include "myMath.h"



int dilateFunction(float * inData, float * outData, int dataWidth, int dataHeight, int dilateWidth, int dilateHeight, int channels){

    int widthTemp, heightTemp;
    int i, j;
    int m, n, z;
    float * dataTemp = NULL;
    int count = 0;
    float medianData = 0.f;
    if(channels > 32){
        printf("channels is larger.\n");
        return -1;
    }
    if(dilateWidth % 2 == 0){
        widthTemp = dilateWidth / 2 - 1;
    }else{
        widthTemp = dilateWidth / 2;
    }
    if(dilateHeight % 2 == 0){
        heightTemp = dilateHeight / 2 - 1;
    }else{
        heightTemp = dilateHeight / 2;
    }

    dataTemp = (float*)malloc(sizeof(float) * dilateWidth * dilateHeight);
    for(z = 0; z < channels; z ++){
        for(i = 0; i < dataHeight; i ++){
            for(j = 0; j < dataWidth; j ++){
                memset(dataTemp, 0, sizeof(float) * dilateWidth * dilateHeight);
                count = 0;
                medianData = 0.0f;
                for(m = -heightTemp; m < dilateHeight - heightTemp; m ++){
                    for(n = -widthTemp; n < dilateWidth - widthTemp; n ++){
                        if(i + m >= 0 && i + m < dataHeight && j + n >= 0 && j + n < dataWidth){
                            dataTemp[count] = inData[((i + m) * dataWidth + (j + n)) * channels + z];
                            count ++;
                        }
                    }
                }

                medianData = getMaxValue(dataTemp, count);
                outData[(i * dataWidth + j) * channels + z] = medianData;
            }
        }
    }
    free(dataTemp);
    return 0;
}

2.主程序

#include "stdafx.h"
#include "Tools.h"
#include "Dilate.h"
#include 
using namespace cv;
int main()
{
    int imageWidth, imageHeight;
    int channels = 1;
    Mat mImage = imread("D:\\workSpace\\VSWorkSpace\\ImageProcess\\ImageProcess\\dilateImage.jpg", 1);
    imshow("srcImage", mImage);
    float * imageData = NULL;
    float * imageOutData = NULL;
    imageWidth = mImage.cols;
    imageHeight = mImage.rows;
    channels = mImage.channels();
    imageData = (float*)malloc(sizeof(float) * imageWidth * imageHeight * channels);
    imageOutData = (float*)malloc(sizeof(float) * imageWidth * imageHeight * channels);
    uCharDataToFloatData(mImage.data, imageData, imageWidth, imageHeight, channels);
    dilateFunction(imageData, imageOutData, imageWidth, imageHeight, 3, 3, channels);
    floatDataToUCharData(imageOutData, mImage.data, imageWidth, imageHeight, channels, 1);
    imshow("dilate Image", mImage);
    waitKey(0);
    free(imageData);
    free(imageOutData);
    return 0;
}

getMaxValue();
该函数见链接
http://blog.csdn.net/jsf921942722/article/details/51527155
uCharDataToFloatData();
floatDataToUCharData();
这两个函数见链接
http://blog.csdn.net/jsf921942722/article/details/51526673
3.图像效果
*****************************3通道彩色图原图***********************

*****************************3通道彩色图膨胀处理后图***********************

*****************************1通道灰度图原图***********************

*****************************1通道灰度图膨胀处理后图***********************