Compile error on ObjectDetection-YOLO about learnopencv

[KeepRaamAndCarryOn]

@vishwesh5

My bad, I didn't download the models first. Both python and C++ code can run now. Thanks

[spmallick]

@vishwesh5 Can you please check?

[vishwesh5]

Hi @KeepRaamAndCarryOn!
Can you try this out?

g++ -ggdb object_detection_yolo.cpp `pkg-config --cflags --libs /usr/local/lib/pkgconfig/opencv.pc` -o object_detection_yolo.out

Vishwesh

[KeepRaamAndCarryOn]

@vishwesh5
Tried:

g++ -ggdb object_detection_yolo.cpp `pkg-config --cflags --libs /usr/local/lib/pkgconfig/opencv.pc` -o object_detection_yolo.out

Error:

object_detection_yolo.cpp:75:31: error: no matching function for call to ‘std::basic_ifstream<char>::basic_ifstream(std::__cxx11::string&)’
             ifstream ifile(str);

[vishwesh5]

@KeepRaamAndCarryOn
Go to line 75, and change ifstream ifile(str); to ifstream ifile(str.c_str());.

[KeepRaamAndCarryOn]

@vishwesh5 made the change in line 75 and 85. Compiled successfully. Thanks!

However I'm facing this when I tried to run:

./object_detection_yolo.out --image=bird.jpg

Is it an unrelated issue?

Error:

terminate called after throwing an instance of 'cv::Exception'
  what():  OpenCV(3.4.2) /opt/opencv/modules/dnn/src/darknet/darknet_io.cpp:784: error: (-212:Parsing error) Failed to parse NetParameter file: yolov3.cfg in function 'ReadNetParamsFromCfgFileOrDie'

Aborted (core dumped)

[vishwesh5]

@KeepRaamAndCarryOn
Can you try the Python code? If that works, we can figure out the issue with C++ code as well.

[vishwesh5]

Great! Glad that the issue was resolved :)