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

자동 번역인진 모르겠지만 "명명된 인자" 라는 명칭으로 메소드 호출이나

객체 생성시 변수 순서와 상관없이 인자명칭을 직접 지정해서 호출 할 수 있는 문법

아래의 코드에서 Main() 안의 moto.Drive() 를 보면

원래 Drive() 메소드는 int miles, int speed로 선언되어 있으나

moto.Drive(speed: 60, miles: 170) 으로

선언된 인자와 다른 순서로 입력을 해주는 것을 볼 수 있다.

using System;

class TestMotorcycle : Motorcycle
{
   public override int Drive(int miles, int speed)
   {
      return (int) Math.Round( ((double)miles) / speed, 0);
   }

   public override double GetTopSpeed()
   {
      return 108.4;
   }

   static void Main()
   {

      TestMotorcycle moto = new TestMotorcycle();
      moto.StartEngine();
      moto.AddGas(15);
      var travelTime = moto.Drive(speed: 60, miles: 170);
      Console.WriteLine("Travel time: approx. {0} hours", travelTime);
   }
}
// The example displays the following output:
//      Travel time: approx. 3 hours

[링크 : https://docs.microsoft.com/en-us/dotnet/csharp/methods]

[링크 : https://docs.microsoft.com/ko-kr/dotnet/csharp/methods]

byte[]를 string으로 바꾸어주는 함수들이 여러개가 있는데 자주 보이는 건 아래의 두개가 아닐까 생각된다.

하지만 둘 다 위험한 함수(?) 란 건 변하지 않는다.. ㅠㅠ

System.Text.Encoding.UTF8.GetString()

[링크 : https://docs.microsoft.com/ko-kr/dotnet/api/system.text.encoding.utf8?view=net-5.0]

System.Text.Encoding.ASCII.GetString()

[링크 : https://docs.microsoft.com/ko-kr/dotnet/api/system.text.asciiencoding.getstring?view=net-5.0]

그러니까 char[]/byte[]를 함수들이 string으로 받는다고 변환해서 보내주면 개판을 친다는 의미

하다하다 안되서 혹시나 이상하게 보내오나 wireshark로 패킷을 보니 정상 -_-

아래 코드에 의해 byte[]를 string으로 변환하고 console 창으로 출력한 결과

ff d8 ff e0 00 10 4a 46 49 46 으로 시작하는 JPEG 헤더가

3f 3f 3f 3f 00 10 4a 46 49 46 으로 바뀌어 버렸다.

responseData = System.Text.Encoding.ASCII.GetString(data, 0, bytes);
Console.WriteLine("Received: {0}", responseData);

그러니까.. 바이너리 데이터는 꾿꾿이 byte[]로 주고 받아야 할 듯.. ㅠㅠ

수직으로 손쉽게 돌아는 가는데

아쉽게도 탭내의 글씨도 세로로 써진다.

글씨는 가로로 쓰게 하는 법 없나?

[링크 : https://docs.microsoft.com/ko-kr/dotnet/desktop/winforms/controls/how-to-display-side-aligned-tabs-with-tabcontrol?view=netframeworkdesktop-4.8]

[링크 : https://stackoverflow.com/questions/8991507/c-sharp-vertical-tab-control]

[링크 : https://docs.microsoft.com/ko-kr/dotnet/csharp/tutorials/console-webapiclient]

[링크 : https://www.nuget.org/packages/Microsoft.Rest.ClientRuntime/]

[링크 : https://www.nuget.org/packages/WebAPIClient/]

와... 이런것도 이렇게 손쉽게 구현이 가능하구나.. 멋진 세상이다..

[링크 : https://www.csharpstudy.com/net/article/16-SSH-클라이언트]

[링크 : https://stackoverrun.com/ko/q/11578482]

[링크 : https://stackoverrun.com/ko/q/1175870]

[링크 : https://www.nuget.org/packages/SSH.NET/]

[링크 : https://www.nuget.org/packages/Telnet/0.9.0-beta0001]

PictureBox 옮길때 두번 뜨는 경우가 있어서 문제가 덜해질까 하고 했는데

별반 차이가 없다.. ㅠㅠ

다른 좋은 방법이 없으려나?

[링크 : https://docs.microsoft.com/en-us/dotnet/api/system.windows.forms.control.doublebuffered]

[링크 : https://www.codeproject.com/Questions/1163589/How-can-I-refresh-image-in-picturebox-whitout-flic]

+ 2020.11.23

해도 효과는 없네.. 다른 것의 영향인가?

[링크 : http://blog.daum.net/chunildongan77/116]

[링크 : https://developer-joe.tistory.com/95]

패널에 그리거나 위에 패널을 더블버퍼링 하는게 답인가?

[링크 : https://stackoverflow.com/questions/53110668/moving-picture-box-fast-causes-flickering-c-sharp]