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specify camera on command line
[challenge-bot]
/
bbb
/
opencv-hello-world
/
opencv-hello-world.cpp
diff --git
a/bbb/opencv-hello-world/opencv-hello-world.cpp
b/bbb/opencv-hello-world/opencv-hello-world.cpp
index 02fea3ea1c374657dd72e46cc28190b009c4076e..55d58274ea17d2eea704dc4db1526202ccd2a5a8 100644
(file)
--- a/
bbb/opencv-hello-world/opencv-hello-world.cpp
+++ b/
bbb/opencv-hello-world/opencv-hello-world.cpp
@@
-13,13
+13,15
@@
using namespace cv;
using namespace std;
int main(int argc, char** argv) {
using namespace std;
int main(int argc, char** argv) {
- VideoCapture camera;
- camera.open(0);
- Mat edges;
- Mat frame;
+ if (argc < 2) {
+ cout << "supply a video device index." << endl;
+ cout << "probably 0 for beaglebone, 1 for laptop" << endl;
+ exit(0); }
+ VideoCapture camera(atoi(argv[1]));
if(!camera.isOpened()) {
cout << "not opened :( that's bad" << endl;
exit(-1); }
if(!camera.isOpened()) {
cout << "not opened :( that's bad" << endl;
exit(-1); }
+ Mat frame;
camera >> frame;
Mat grey_image;
cvtColor(frame, grey_image, CV_BGR2GRAY);
camera >> frame;
Mat grey_image;
cvtColor(frame, grey_image, CV_BGR2GRAY);