구차니의 잡동사니 모음

오랫만에 빌드하니 다 까먹었네 -_ㅠ

g++ myprog.cpp -lopencv_core -lopencv_imgproc -lopencv_videoio -lopencv_highgui -lopencv_objdetect -o myprog

[링크 : https://answers.opencv.org/question/165673]

아놔.. 에러 뿜뿜 -_-

/usr/bin/ld: warning: libopencv_imgproc.so.3.4, needed by //usr/local/lib/libopencv_dnn.so, may conflict with libopencv_imgproc.so.3.2
/usr/bin/ld: warning: libopencv_core.so.3.4, needed by //usr/local/lib/libopencv_dnn.so, may conflict with libopencv_core.so.3.2
/usr/bin/ld: /tmp/cc64nD60.o: undefined reference to symbol '_ZNK2cv3Mat5emptyEv'
/usr/bin/ld: //usr/local/lib/libopencv_core.so.3.4: error adding symbols: DSO missing from command line

+

아무튼 라즈베리 3B 에서 하는데

3.2.0이 설치되어 있고, 필요에 의해서 3.4.0을 빌드해서 설치했더니 3.2.0과 섞여서 난리가 났다.

그래서 -L 옵션을 통해 3.4.0이 설치된 곳을 우선적으로 보도록 해주니 문제없이 해결!

$ whereis libopencv_imgproc
libopencv_imgproc: /usr/lib/arm-linux-gnueabihf/libopencv_imgproc.so /usr/lib/arm-linux-gnueabihf/libopencv_imgproc.a /usr/local/lib/libopencv_imgproc.so

$ ls -al /usr/local/lib/libopencv_imgproc.so*
lrwxrwxrwx 1 root root      24 Jan 14 08:04 /usr/local/lib/libopencv_imgproc.so -> libopencv_imgproc.so.3.4
lrwxrwxrwx 1 root root      27 Jan 14 08:04 /usr/local/lib/libopencv_imgproc.so.3.4 -> libopencv_imgproc.so.3.4.13
-rw-r--r-- 1 root root 3292320 Jan 14 05:01 /usr/local/lib/libopencv_imgproc.so.3.4.13

$ ls -al /usr/lib/arm-linux-gnueabihf/libopencv_imgproc.so
lrwxrwxrwx 1 root root 24 Feb 12  2019 /usr/lib/arm-linux-gnueabihf/libopencv_imgproc.so -> libopencv_imgproc.so.3.2

$ g++ opencv_video.cpp -lopencv_core -lopencv_dnn -lopencv_imgproc -lopencv_videoio -lopencv_highgui -lopencv_objdetect -lopencv_imgcodecs -L/usr/local/lib

MobileNet-SSD의 ssd_detect.cpp 빌드하려다가

아 몰라 대충 흑화중.. 후...

sudo apt-get install libcaffe-cpu-dev libcaffe-cpu1 libboost-all-dev libgflags-dev libgoogle-glog-dev libprotobuf-dev libopenblas-dev

$ g++ ssd_detect.cpp -lopencv_core -lopencv_dnn -lopencv_imgproc -lopencv_videoio -lopencv_highgui -lopencv_objdetect -lopencv_imgcodecs -L/usr/local/lib -o ssd_detect
ssd_detect.cpp:15:10: fatal error: caffe/caffe.hpp: No such file or directory
 #include <caffe/caffe.hpp>
          ^~~~~~~~~~~~~~~~~
compilation terminated.
pi@raspberrypi:~/src/MobileNet-SSD $ g++ ssd_detect.cpp -lopencv_core -lopencv_dnn -lopencv_imgproc -lopencv_videoio -lopencv_highgui -lopencv_objdetect -lopencv_imgcodecs -L/usr/local/lib -o ssd_detect
In file included from /usr/include/caffe/blob.hpp:8,
                 from /usr/include/caffe/caffe.hpp:7,
                 from ssd_detect.cpp:15:
/usr/include/caffe/common.hpp:4:10: fatal error: boost/shared_ptr.hpp: No such file or directory
 #include <boost/shared_ptr.hpp>
          ^~~~~~~~~~~~~~~~~~~~~~
compilation terminated.

pi@raspberrypi:~/src/MobileNet-SSD $ g++ ssd_detect.cpp -lopencv_core -lopencv_dnn -lopencv_imgproc -lopencv_videoio -lopencv_highgui -lopencv_objdetect -lopencv_imgcodecs -L/usr/local/lib -o ssd_detect
In file included from /usr/include/caffe/blob.hpp:8,
                 from /usr/include/caffe/caffe.hpp:7,
                 from ssd_detect.cpp:15:
/usr/include/caffe/common.hpp:5:10: fatal error: gflags/gflags.h: No such file or directory
 #include <gflags/gflags.h>
          ^~~~~~~~~~~~~~~~~
compilation terminated.
$ g++ ssd_detect.cpp -lopencv_core -lopencv_dnn -lopencv_imgproc -lopencv_videoio -lopencv_highgui -lopencv_objdetect -lopencv_imgcodecs -L/usr/local/lib -o ssd_detect
In file included from /usr/include/caffe/common.hpp:19,
                 from /usr/include/caffe/blob.hpp:8,
                 from /usr/include/caffe/caffe.hpp:7,
                 from ssd_detect.cpp:15:
/usr/include/caffe/util/device_alternate.hpp:34:10: fatal error: cublas_v2.h: No such file or directory
 #include <cublas_v2.h>
          ^~~~~~~~~~~~~
compilation terminated.

-DCPU_ONLY


 $ g++ ssd_detect.cpp -lopencv_core -lopencv_dnn -lopencv_imgproc -lopencv_videoio -lopencv_highgui -lopencv_objdetect -lopencv_imgcodecs -L/usr/local/lib -o ssd_detect -DCPU_ONLY
In file included from /usr/include/caffe/util/math_functions.hpp:11,
                 from /usr/include/caffe/filler.hpp:13,
                 from /usr/include/caffe/caffe.hpp:9,
                 from ssd_detect.cpp:15:
/usr/include/caffe/util/mkl_alternate.hpp:14:10: fatal error: cblas.h: No such file or directory
 #include <cblas.h>
          ^~~~~~~~~
compilation terminated.

$ g++ ssd_detect.cpp -lopencv_core -lopencv_dnn -lopencv_imgproc -lopencv_videoio -lopencv_highgui -lopencv_objdetect -lopencv_imgcodecs -L/usr/local/lib -o ssd_detect -DCPU_ONLY -lcaffe
/usr/bin/ld: /tmp/ccDNrn3i.o: undefined reference to symbol '_ZN6google4base21CheckOpMessageBuilder7ForVar2Ev'
/usr/bin/ld: //lib/arm-linux-gnueabihf/libglog.so.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status


$ g++ ssd_detect.cpp -lopencv_core -lopencv_dnn -lopencv_imgproc -lopencv_videoio -lopencv_highgui -lopencv_objdetect -lopencv_imgcodecs -L/usr/local/lib -o ssd_detect -DCPU_ONLY -lcaffe -lglog
/usr/bin/ld: /tmp/ccO8VjqT.o: undefined reference to symbol '_ZN6google26ShowUsageWithFlagsRestrictEPKcS1_'
/usr/bin/ld: //lib/arm-linux-gnueabihf/libgflags.so.2.2: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status




$ g++ ssd_detect.cpp -lopencv_core -lopencv_dnn -lopencv_imgproc -lopencv_videoio -lopencv_highgui -lopencv_objdetect -lopencv_imgcodecs -L/usr/local/lib -o ssd_detect -DCPU_ONLY -lcaffe -lgflags -lglog
/usr/bin/ld: warning: libopencv_imgcodecs.so.3.2, needed by /usr/lib/gcc/arm-linux-gnueabihf/8/../../../arm-linux-gnueabihf/libcaffe.so, may conflict with libopencv_imgcodecs.so.3.4
/usr/bin/ld: warning: libopencv_imgproc.so.3.2, needed by /usr/lib/gcc/arm-linux-gnueabihf/8/../../../arm-linux-gnueabihf/libcaffe.so, may conflict with libopencv_imgproc.so.3.4
/usr/bin/ld: warning: libopencv_core.so.3.2, needed by /usr/lib/gcc/arm-linux-gnueabihf/8/../../../arm-linux-gnueabihf/libcaffe.so, may conflict with libopencv_core.so.3.4

caffe 빌드

위에 lib들 설치하고 아래것 추가로 설치

[링크 : https://opencv-python-tutroals.readthedocs.io/.../py_face_detection/py_face_detection.html]

[링크 : https://stackoverflow.com/questions/30508922/error-215-empty-in-function-detectmultiscale]

[ : https://github.com/Microsoft/vscode-python/issues/2879]

cv2.Canny() 함수 사용법

[링크 : https://docs.opencv.org/3.1.0/da/d22/tutorial_py_canny.html]

[링크 : https://docs.opencv.org/2.4/doc/tutorials/imgproc/imgtrans/hough_circle/hough_circle.html]

[링크 : https://kr.mathworks.com/help/images/ref/imfindcircles.html]

[링크 : https://code.i-harness.com/ko-kr/q/96763b]

[링크 : http://k-imagineer.tistory.com/7]

[링크 : https://dreamaz.tistory.com/431]

[링크 : https://docs.opencv.org/3.4.1/.../group__imgproc__feature.html#ga47849c3be0d0406ad3ca45db65a25d2d]

Odroid U3를 두개 묶어 놓다 보니 든 생각..

한대에서 영상 두개를 받고(USB로)

그 이미지중 하나(그러니까 사람으로 치면 오른눈-오른눈잡이)를 본인이 처리하고

다른쪽 영상 하나를 다른 시스템으로 넘겨서 처리하거나

아니면 각각 하나의 영상을 받아서

처리 결과만 다른쪽으로 넘겨주면 어떨까?

적고 보니 후자가 더 안정적일 수도 있겠네

[링크 : http://pachyderm.readthedocs.io/en/latest/getting_started/beginner_tutorial.html]