CV源码实现及调试darknet中opencv的问题
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error
./src/image_opencv.cpp:5:10: fatal error: opencv2/opencv.hpp: No such file or directory
5 | #include "opencv2/opencv.hpp"
error
./src/image_opencv.cpp:12:1: error: ‘IplImage’ does not name a type
12
问题原因,说到底就是opencv include和lib的路径问题;
安装opencv
使用cmake安装,编译阶段会出现问题,或者编译安装成功,但是没有opencv_world库,最后直接使用cmake gui安装;
解决方法:
重新安装opencv,修改Makefile中opencv部分,然后更改src/image_opencv.cpp文件,使用Mat替换IplImage,且 remove all CV_ from opencv flags;
sudo apt install libopencv-dev # opencv 4.2.0
dpkg --list | grep opencv
pkg-config --libs opencv4
pkg-config
Makefile
LDFLAGS+= `pkg-config --libs opencv4` -lstdc++
COMMON+= `pkg-config
src/image_opencv.cpp
#ifdef OPENCV
#include "stdio.h"
#include "stdlib.h"
#include "opencv2/opencv.hpp"
#include "image.h"
using namespace cv;
extern "C"
// /*
Mat image_to_mat(image im)
image copy = copy_image(im);
constrain_image(copy);
if(im.c == 3) rgbgr_image(copy);
Mat m(cv::Size(im.w,im.h), CV_8UC(im.c));
int x,y,c;
int step = m.step;
for(y = 0; y < im.h; ++y)
for(x = 0; x < im.w; ++x)
for(c= 0; c < im.c; ++c)
float val = im.data[c*im.h*im.w + y*im.w + x];
m.data[y*step + x*im.c + c] = (unsigned char)(val*255);
free_image(copy);
return m;
image mat_to_image(Mat m)
int h = m.rows;
int w = m.cols;
int c = m.channels();
image im = make_image(w, h, c);
unsigned char *data = (unsigned char *)m.data;
int step = m.step;
int i, j, k;
for(i = 0; i < h; ++i)
for(k= 0; k < c; ++k)
for(j = 0; j < w; ++j)
im.data[k*w*h + i*w + j] = data[i*step + j*c + k]/255.;
rgbgr_image(im);
return im;
/*
IplImage *image_to_ipl(image im)
int x,y,c;
IplImage *disp = cvCreateImage(cvSize(im.w,im.h), IPL_DEPTH_8U, im.c);
int step = disp->widthStep;
for(y = 0; y < im.h; ++y)
for(x = 0; x < im.w; ++x)
for(c= 0; c < im.c; ++c)
float val = im.data[c*im.h*im.w + y*im.w + x];
disp->imageData[y*step + x*im.c + c] = (unsigned char)(val*255);
return disp;
image ipl_to_image(IplImage* src)
int h = src->height;
int w = src->width;
int c = src->nChannels;
image im = make_image(w, h, c);
unsigned char *data = (unsigned char *)src->imageData;
int step = src->widthStep;
int i, j, k;
for(i = 0; i < h; ++i)
for(k= 0; k < c; ++k)
for(j = 0; j < w; ++j)
im.data[k*w*h + i*w + j] = data[i*step + j*c + k]/255.;
return im;
Mat image_to_mat(image im)
image copy = copy_image(im);
constrain_image(copy);
if(im.c == 3) rgbgr_image(copy);
IplImage *ipl = image_to_ipl(copy);
Mat m = cvarrToMat(ipl, true);
cvReleaseImage(&ipl);
free_image(copy);
return m;
image mat_to_image(Mat m)
IplImage ipl = m;
image im = ipl_to_image(&ipl);
rgbgr_image(im);
return im;
*/
//
void *open_video_stream(const char *f, int c, int w, int h, int fps)
VideoCapture *cap;
if(f) cap = new VideoCapture(f);
else cap = new VideoCapture(c);
if(!cap->isOpened()) return 0;
if(w) cap->set(CAP_PROP_FRAME_WIDTH, w);
if(h) cap->set(CAP_PROP_FRAME_HEIGHT, w);
if(fps) cap->set(CAP_PROP_FPS, w);
return (void *) cap;
image get_image_from_stream(void *p)
VideoCapture *cap = (VideoCapture *)p;
Mat m;
*cap >> m;
if(m.empty()) return make_empty_image(0,0,0);
return mat_to_image(m);
image load_image_cv(char *filename, int channels)
int flag = -1;
if (channels == 0) flag = -1;
else if (channels == 1) flag = 0;
else if (channels == 3) flag = 1;
else
fprintf(stderr, "OpenCV cant force load with %d channels\\n", channels);
Mat m;
m = imread(filename, flag);
if(!m.data)
fprintf(stderr, "Cannot load image \\"%s\\"\\n", filename);
char buff[256];
sprintf(buff, "echo %s >> bad.list", filename);
system(buff);
return make_image(10,10,3);
//exit(0);
image im = mat_to_image(m);
return im;
int show_image_cv(image im, const char* name, int ms)
Mat m = image_to_mat(im);
imshow(name, m);
int c = waitKey(ms);
if (c != -1) c = c%256;
return c;
void make_window(char *name, int w, int h, int fullscreen)
namedWindow(name, WINDOW_NORMAL);
if (fullscreen)
setWindowProperty(name, WND_PROP_FULLSCREEN, WINDOW_FULLSCREEN);
else
resizeWindow(name, w, h);
if(strcmp(name, "Demo") == 0) moveWindow(name, 0, 0);
#endif
View Code
参考
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