image processing and opencv

I want to develop an application like face Recognition and i also use usb
webcam to capture an image. I know OpenCV to process an image, but I don't
know how to port on my mini2440. 

Now, I installed QT4.5.2 and tslib on my host computer(fedora9) and i can
build a small application using Qt Creator 1.3.1. And i can run a
application on my board successfully. 

I got a few questions about OpenCV.
Should I install opencv on my mini2440? or just only install OpenCV on my
host computer to build a binary file? or just copy the library of OpenCV on
my mini2440? Can i integrate OpenCV with Qt?

Did anybody use OpenCV for Linux in your project? If you don't mind, can
you explain step-by-step about that project?

Thank you very much!

Have you seen this topic?
http://www.friendlyarm.net/forum/topic/306

after reading this topic.
I still got a few questions about OpenCV.
Should I install opencv on my mini2440? or just only install OpenCV on my
host computer to build a binary file? or just copy the library of OpenCV on
my mini2440? Can i integrate OpenCV with Qt?

I followed the instruction from this topic.
http://www.friendlyarm.net/forum/topic/306

I can't build a binary file.

Toolchain: 4.3.2

steps:
1. tar -xjf OpenCV-2.0.0.tar.bz2
2. go to OpenCV-2.0.0 
3. ./configure --host=arm-linux --disable-shared
4. make
5. make install

Finally, I got this errors. 

[root@localhost FYP]# arm-linux-g++ -o2 -I /usr/local/include/opencv
facedetect_noui.cpp -L /root/Desktop/OpenCV-2.0.0/src/.libs -lcv -lhighgui
-lcxcore -lml -lcvaux -lrt -lpthread -ldl -lz -lpng12 -ljpeg -o facedetect
cc1plus: warning: include location "/usr/local/include/opencv" is unsafe
for cross-compilation
/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm
-none-linux-gnueabi/bin/ld:
cannot find -lcv
collect2: ld returned 1 exit status

Help!!

I tried so many times, i still got a error messages.

[root@localhost FYP]# arm-linux-g++ -O2 -I/usr/local/include/opencv
-L/root/Desktop/FYP/OpenCV-2.0.0/src/.libs -lcv -lhighgui -lcxcore -lml
-lcvaux -lrt -lpthread -ldl -lz -lpng12 -ljpeg facedetect_noui.cpp -o
facedetect

cc1plus: warning: include location "/usr/local/include/opencv" is unsafe
for cross-compilation
/tmp/ccdobqjX.o: In function `detectAndSave(cv::Mat&,
cv::CascadeClassifier&, cv::CascadeClassifier&, double,
std::basic_string<char, std::char_traits<char>, std::allocator<char> >
const&)':
facedetect_noui.cpp:(.text+0x190): undefined reference to
`cv::cvtColor(cv::Mat const&, cv::Mat&, int, int)'
facedetect_noui.cpp:(.text+0x1cc): undefined reference to
`cv::resize(cv::Mat const&, cv::Mat&, cv::Size_<int>, double, double, int)'
facedetect_noui.cpp:(.text+0x1d8): undefined reference to
`cv::equalizeHist(cv::Mat const&, cv::Mat&)'
facedetect_noui.cpp:(.text+0x1dc): undefined reference to `cvGetTickCount'
facedetect_noui.cpp:(.text+0x220): undefined reference to
`cv::CascadeClassifier::detectMultiScale(cv::Mat const&,
std::vector<cv::Rect_<int>, std::allocator<cv::Rect_<int> > >&, double,
int, int, cv::Size_<int>)'
facedetect_noui.cpp:(.text+0x224): undefined reference to `cvGetTickCount'
facedetect_noui.cpp:(.text+0x264): undefined reference to
`cvGetTickFrequency'
facedetect_noui.cpp:(.text+0x414): undefined reference to
`cv::circle(cv::Mat&, cv::Point_<int>, int, cv::Scalar_<double> const&,
int, int, int)'
facedetect_noui.cpp:(.text+0x41c): undefined reference to
`cv::CascadeClassifier::empty() const'
facedetect_noui.cpp:(.text+0x588): undefined reference to
`cv::error(cv::Exception const&)'
facedetect_noui.cpp:(.text+0x720): undefined reference to
`cv::CascadeClassifier::detectMultiScale(cv::Mat const&,
std::vector<cv::Rect_<int>, std::allocator<cv::Rect_<int> > >&, double,
int, int, cv::Size_<int>)'
facedetect_noui.cpp:(.text+0x834): undefined reference to
`cv::circle(cv::Mat&, cv::Point_<int>, int, cv::Scalar_<double> const&,
int, int, int)'
facedetect_noui.cpp:(.text+0x8d4): undefined reference to
`cv::imwrite(std::basic_string<char, std::char_traits<char>,
std::allocator<char> > const&, cv::Mat const&, std::vector<int,
std::allocator<int> > const&)'
facedetect_noui.cpp:(.text+0x984): undefined reference to
`cv::fastFree(void*)'
facedetect_noui.cpp:(.text+0x990): undefined reference to
`cv::fastFree(void*)'
facedetect_noui.cpp:(.text+0x99c): undefined reference to
`cv::fastFree(void*)'
facedetect_noui.cpp:(.text+0xb50): undefined reference to
`cv::fastFree(void*)'
facedetect_noui.cpp:(.text+0xb5c): undefined reference to
`cv::fastFree(void*)'
/tmp/ccdobqjX.o: In function `main':
facedetect_noui.cpp:(.text+0xf24): undefined reference to
`cv::CascadeClassifier::CascadeClassifier()'
facedetect_noui.cpp:(.text+0xf2c): undefined reference to
`cv::CascadeClassifier::CascadeClassifier()'
facedetect_noui.cpp:(.text+0x1080): undefined reference to
`cv::CascadeClassifier::load(std::basic_string<char,
std::char_traits<char>, std::allocator<char> > const&)'
facedetect_noui.cpp:(.text+0x1218): undefined reference to
`cv::CascadeClassifier::load(std::basic_string<char,
std::char_traits<char>, std::allocator<char> > const&)'
facedetect_noui.cpp:(.text+0x1254): undefined reference to
`cvCreateCameraCapture'
facedetect_noui.cpp:(.text+0x1288): undefined reference to `cvQueryFrame'
facedetect_noui.cpp:(.text+0x12c4): undefined reference to
`cv::Mat::Mat(_IplImage const*, bool)'
facedetect_noui.cpp:(.text+0x13cc): undefined reference to
`cv::Mat::copyTo(cv::Mat&) const'
facedetect_noui.cpp:(.text+0x1420): undefined reference to
`cvReleaseCapture'
facedetect_noui.cpp:(.text+0x142c): undefined reference to
`cv::CascadeClassifier::~CascadeClassifier()'
facedetect_noui.cpp:(.text+0x1438): undefined reference to
`cv::CascadeClassifier::~CascadeClassifier()'
facedetect_noui.cpp:(.text+0x1838): undefined reference to
`cv::imread(std::basic_string<char, std::char_traits<char>,
std::allocator<char> > const&, int)'
facedetect_noui.cpp:(.text+0x1920): undefined reference to
`cvCreateFileCapture'
facedetect_noui.cpp:(.text+0x1ac4): undefined reference to
`cv::fastFree(void*)'
facedetect_noui.cpp:(.text+0x1ad0): undefined reference to
`cv::fastFree(void*)'
facedetect_noui.cpp:(.text+0x1b00): undefined reference to
`cv::flip(cv::Mat const&, cv::Mat&, int)'
facedetect_noui.cpp:(.text+0x1b0c): undefined reference to
`cv::fastFree(void*)'
facedetect_noui.cpp:(.text+0x1cd0): undefined reference to
`cv::imread(std::basic_string<char, std::char_traits<char>,
std::allocator<char> > const&, int)'
facedetect_noui.cpp:(.text+0x1d9c): undefined reference to
`cv::fastFree(void*)'
facedetect_noui.cpp:(.text+0x1df0): undefined reference to
`cv::fastFree(void*)'
facedetect_noui.cpp:(.text+0x1e7c): undefined reference to
`cv::fastFree(void*)'
facedetect_noui.cpp:(.text+0x1e88): undefined reference to
`cv::fastFree(void*)'
facedetect_noui.cpp:(.text+0x1e98): undefined reference to
`cv::CascadeClassifier::~CascadeClassifier()'
facedetect_noui.cpp:(.text+0x1ea4): undefined reference to
`cv::CascadeClassifier::~CascadeClassifier()'
/tmp/ccdobqjX.o: In function `cv::Mat::release()':
facedetect_noui.cpp:(.text._ZN2cv3Mat7releaseEv[cv::Mat::release()]+0x50):
undefined reference to `cv::fastFree(void*)'
/tmp/ccdobqjX.o: In function `cv::Mat::operator=(cv::Mat const&)':
facedetect_noui.cpp:(.text._ZN2cv3MataSERKS0_[cv::Mat::operator=(cv::Mat
const&)]+0xb0): undefined reference to `cv::fastFree(void*)'
/tmp/ccdobqjX.o: In function `cv::Mat::create(int, int, int)':
facedetect_noui.cpp:(.text._ZN2cv3Mat6createEiii[cv::Mat::create(int, int,
int)]+0x154): undefined reference to `cv::error(cv::Exception const&)'
facedetect_noui.cpp:(.text._ZN2cv3Mat6createEiii[cv::Mat::create(int, int,
int)]+0x1c8): undefined reference to `cv::fastMalloc(unsigned int)'
facedetect_noui.cpp:(.text._ZN2cv3Mat6createEiii[cv::Mat::create(int, int,
int)]+0x22c): undefined reference to `cv::fastFree(void*)'
collect2: ld returned 1 exit status
[root@localhost FYP]# arm-linux-g++ -O2 -I/usr/local/include/opencv
-L/usr/local/lib -lcv -lhighgui -lcxcore -lml -lcvaux -lrt -lpthread -ldl
-lz -lpng12 -ljpeg facedetect_noui.cpp -o facedetect
cc1plus: warning: include location "/usr/local/include/opencv" is unsafe
for cross-compilation
/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm
-none-linux-gnueabi/bin/ld:
warning: library search path "/usr/local/lib" is unsafe for
cross-compilation
/tmp/cc3Ejmow.o: In function `detectAndSave(cv::Mat&,
cv::CascadeClassifier&, cv::CascadeClassifier&, double,
std::basic_string<char, std::char_traits<char>, std::allocator<char> >
const&)':
facedetect_noui.cpp:(.text+0x190): undefined reference to
`cv::cvtColor(cv::Mat const&, cv::Mat&, int, int)'
facedetect_noui.cpp:(.text+0x1cc): undefined reference to
`cv::resize(cv::Mat const&, cv::Mat&, cv::Size_<int>, double, double, int)'
facedetect_noui.cpp:(.text+0x1d8): undefined reference to
`cv::equalizeHist(cv::Mat const&, cv::Mat&)'
facedetect_noui.cpp:(.text+0x1dc): undefined reference to `cvGetTickCount'
facedetect_noui.cpp:(.text+0x220): undefined reference to
`cv::CascadeClassifier::detectMultiScale(cv::Mat const&,
std::vector<cv::Rect_<int>, std::allocator<cv::Rect_<int> > >&, double,
int, int, cv::Size_<int>)'
facedetect_noui.cpp:(.text+0x224): undefined reference to `cvGetTickCount'
facedetect_noui.cpp:(.text+0x264): undefined reference to
`cvGetTickFrequency'
facedetect_noui.cpp:(.text+0x414): undefined reference to
`cv::circle(cv::Mat&, cv::Point_<int>, int, cv::Scalar_<double> const&,
int, int, int)'
facedetect_noui.cpp:(.text+0x41c): undefined reference to
`cv::CascadeClassifier::empty() const'
facedetect_noui.cpp:(.text+0x588): undefined reference to
`cv::error(cv::Exception const&)'
facedetect_noui.cpp:(.text+0x720): undefined reference to
`cv::CascadeClassifier::detectMultiScale(cv::Mat const&,
std::vector<cv::Rect_<int>, std::allocator<cv::Rect_<int> > >&, double,
int, int, cv::Size_<int>)'
facedetect_noui.cpp:(.text+0x834): undefined reference to
`cv::circle(cv::Mat&, cv::Point_<int>, int, cv::Scalar_<double> const&,
int, int, int)'
facedetect_noui.cpp:(.text+0x8d4): undefined reference to
`cv::imwrite(std::basic_string<char, std::char_traits<char>,
std::allocator<char> > const&, cv::Mat const&, std::vector<int,
std::allocator<int> > const&)'
facedetect_noui.cpp:(.text+0x984): undefined reference to
`cv::fastFree(void*)'
facedetect_noui.cpp:(.text+0x990): undefined reference to
`cv::fastFree(void*)'
facedetect_noui.cpp:(.text+0x99c): undefined reference to
`cv::fastFree(void*)'
facedetect_noui.cpp:(.text+0xb50): undefined reference to
`cv::fastFree(void*)'
facedetect_noui.cpp:(.text+0xb5c): undefined reference to
`cv::fastFree(void*)'
/tmp/cc3Ejmow.o: In function `main':
facedetect_noui.cpp:(.text+0xf24): undefined reference to
`cv::CascadeClassifier::CascadeClassifier()'
facedetect_noui.cpp:(.text+0xf2c): undefined reference to
`cv::CascadeClassifier::CascadeClassifier()'
facedetect_noui.cpp:(.text+0x1080): undefined reference to
`cv::CascadeClassifier::load(std::basic_string<char,
std::char_traits<char>, std::allocator<char> >...stripped-down

HELP!

can you try:
[root@localhost FYP]# arm-linux-g++ -O2 -I/usr/local/include/opencv
facedetect_noui.cpp -L/root/Desktop/FYP/OpenCV-2.0.0/src/.libs -lcv
-lhighgui -lcxcore -lml -lcvaux -lrt -lpthread -ldl -lz -lpng12 -ljpeg -o
facedetect

Hi

I successfully cross-compiled opencv and got 4 directories generated:
include
bin
share
lib

As i am running qtopia 2.2 rootfs on my board, i copied contents of
the above 4 directories to those in the board fs (for eg. bin to /bin
of board) Is this ok? will it work this way or do I need to make the
rootfs again? Also how to test whether the opencv is working or not?



Tan

Hi,
I am working on opencv.when i compile cpp programm for opencv i get

 In function `main':
cameracapture.cpp:(.text+0x11): undefined reference to
`cvCreateCameraCapture'
cameracapture.cpp:(.text+0x65): undefined reference to `cvNamedWindow'
cameracapture.cpp:(.text+0x74): undefined reference to `cvQueryFrame'
cameracapture.cpp:(.text+0xbf): undefined reference to `cvShowImage'
cameracapture.cpp:(.text+0xcb): undefined reference to `cvWaitKey'
cameracapture.cpp:(.text+0xe7): undefined reference to `cvReleaseCapture'
cameracapture.cpp:(.text+0xf3): undefined reference to `cvDestroyWindow'

please help to solve this problem

hi,
I have tried this coomand but it didn't work for me.


 arm-linux-g++ -O2 -I/usr/local/include/opencv
cameracapture.cpp -L/root/Desktop/FYP/OpenCV-2.0.0/src/.libs -lcv
-lhighgui -lcxcore -lml -lcvaux -lrt -lpthread -ldl -lz -lpng12 -ljpeg -o
cameracapture


Please help me



Tushar

Hi Tushar,
I got the same problem. Did you fix that?
Please tell me how to resolve that problem.
Thanks so much.

Best Regards,
Thang

Hi Thang

u can refer this link

https://www.youtube.com/watch?v=KYIb7g7o0O0

Hey, this is video i have using micro 2440 and openCV to tracking line. 
https://www.youtube.com/watch?v=TFR9rM1_mg8&list=UUaaQ_0uSE2PUpDHy5Z...
Note: Micro 2440 use USB 1.1, not 2.0, thus, you must use webcam with usb
1.1.