jni format opencv

image.cpp

#include <jni.h>
#include <stdio.h>
#include <stdlib.h>
#include <opencv/cv.h>
#include <opencv/highgui.h>

extern "C"{
	JNIEXPORT void JNICALL Java_com_test_opencv_Opencvtest_setimage
  (JNIEnv *env, jobject obj) {
	
	IplImage* imgIn = cvLoadImage("/mnt/sdcard/c.jpg");
		if(!imgIn){ 
		}else{
		
			IplImage* imgOut = cvCreateImage(cvGetSize(imgIn),IPL_DEPTH_8U,3);
			cvSmooth(imgIn,imgOut);
			const char* result1 = "/mnt/sdcard/c_1.jpg";
			cvSaveImage(result1,imgOut);
			IplImage* imgGray = cvCreateImage(cvGetSize(imgIn),IPL_DEPTH_8U,1);
			cvCvtColor(imgIn,imgGray,CV_BGR2GRAY);
			const char* result2 = "/mnt/sdcard/c_2.jpg";
			cvSaveImage(result2,imgGray);
			IplImage* imgThr = cvCreateImage(cvGetSize(imgIn),IPL_DEPTH_8U,1);
			cvThreshold(imgGray,imgThr,128,1,CV_THRESH_BINARY);
			int height = imgThr->height;
			int width = imgThr->width;
			int step = imgThr->widthStep/sizeof(uchar);
			uchar* data = (uchar *)imgThr->imageData;
			for(int i=0;i<height;i++){
				for(int j=0;j<width;j++){
					if(data[i*step+j]==1){
						data[i*step+j]=255;
					}
				}
			}
			const char* result3 = "/mnt/sdcard/c_3.jpg";
			cvSaveImage(result3,imgThr);
			cvReleaseImage(&imgIn);
			cvReleaseImage(&imgOut);
			cvReleaseImage(&imgGray);
			cvReleaseImage(&imgThr);
			
		}
		
  
  
  }

}