cannot run compile opencv program

0

asked Jul 22 '14

Nabeel
36 ●2 ●5

Hi Everyone,

I had OpenCV 2.4 on Ubuntu 12.04. My C++ codes were working fine.

Now, I installed OpenCV 2.4.9 today on the computer. My codes are now giving me errors.

For example, I run the following basic command in C++:

Mat image1 = imread(argv[1], CV_LOAD_IMAGE_GRAYSCALE);

And I get following errors:

src/main.cpp:25:37: error: ‘CV_LOAD_IMAGE_GRAYSCALE’ was not declared in this scope src/main.cpp:25:60: error: ‘imread’ was not declared in this scope

But I can create OpenCV Mat objects without any problem.

I also checked the outputs by running pkg-config opencv --libs and pkg-config opencv --cflags commands. Outputs are:

-I/usr/local/include/opencv -I/usr/local/include /usr/local/lib/lib /usr/local/lib/libopencv_core.so /usr/local/lib/libopencv_features2d.so /usr/local/lib/libopencv_flann.so /usr/local/lib/libopencv_highgui.so .......

I don't know what's going wrong. Everything was fine before.

I suspect something to do with opencv2 module, which cannot be loaded.

Please help me out.

Thanks

Comments

2

did you get the code from github ? did you do a 'git checkout 2.4' before building it ?

it looks like you've build the master(3.0) version, those flags changed there

berak (Jul 22 '14)edit

add a comment

0

answered Jul 22 '14

jamesnzt

242 ●1 ●4 ●16

updated Jul 22 '14

since you didn't mention the program, i will tell some solution which i got working with it

you have to specify the image file name and location while running the program eg ./program image1.jpg
If any error in specifying color/ grayscale, just specify as imread(argv[1]); cvtcolor(src,dst,CV_BGR2GRAY)
just specify imread(argv[1],0)

or otherwise you may have to include <opencv2 highgui="" highgui.hpp="">

Comments

Thanks Mr. berak I corrected it.

jamesnzt (Jul 22 '14)edit

add a comment

0

answered Jul 23 '14

jamesnzt

242 ●1 ●4 ●16

updated Jul 23 '14

StevenPuttemans

20029 ●16 ●82 ●207 http://stevenputtemans...

include the correct header files using the following commands

include"opencv2/imgproc/imgproc.hpp"
include"opencv2/core/core.hpp"
include"opencv2/highgui/highgui.hpp"

add a comment

0

answered Jul 22 '14

JewelCV
31 ●4

@berak

encountered the same error. if i do a git checkout what would happen? would opencv 2.4.9 based codes run on it?

Comments

"what would happen?"

you would switch to the 2.4.9 code version. (git checkout master gets you back to 3.0)
after rebuilding the libs with cmake, your code above would work as expected.

berak (Jul 22 '14)edit

but it dint make a difference the newly installed file system still dint contain any file with imread declaration.

JewelCV (Jul 22 '14)edit

it did. thanks @berak ! :)

JewelCV (Jul 23 '14)edit

add a comment

cannot run compile opencv program

Comments

3 answers

Comments

Comments

Links

Question Tools

Stats

Related questions

cannot run compile opencv program edit savecancel

Comments

3 answers

Comments

Comments

Links

Question Tools

Stats

Related questions

cannot run compile opencv program