demo stuck about fmo-cpp-demo

[gitunit]

building opencv3 from scratch enabling ffmpeg and gtk finally did the trick.

[rozumden]

Hi,

You must choose the type of visualization, e.g. --demo or --utiademo. One example would be "fmo-desktop --camera 0 --demo". What parameters did you use?

[gitunit]

sorry for the late reply, i was offline for some time. i chose every possible parameter (as in the README), everytime the application gets stuck at the same line shown above. im on ubuntu 18.04.
the pre-compiled demo for windows does work though with the same parameters/run configs.

[rozumden]

Can you please provide the exact command line which you used for running this demo?

[gitunit]

Can you please provide the exact command line which you used for running this demo?

i tried all possibilities as mentioned in the README.

here is a list of some of those commands:

/usr/local/bin/fmo-desktop --camera 0 --demo
/usr/local/bin/fmo-desktop --camera 0 --utiademo
/usr/local/bin/fmo-desktop --input ~/Downloads/17150385_rally1_out.mp4 --debug
/usr/local/bin/fmo-desktop --input ~/Downloads/17150385_rally1_out.mp4 --tutdemo
/usr/local/bin/fmo-desktop --input ~/Downloads/17150385_rally1_out.mp4 --demo

and many many more.
for every command the program is stuck at the same place, it's never returning from aglorithm make.

[rozumden]

I've just tried downloading the git repository, compiling and running the commands you should above, and everything was working (also on Ubuntu 18.04). Which OpenCV version did you use? I recommend 3.4.0. Also, please try running from your build directory: "desktop/fmo-desktop --input ...".

It's quite difficult to guess why the demo is stuck at that line, as it shouldn't be stuck there, it's essentially just a constructor. Do you see a GUI window at least?

[gitunit]

no gui window. i have to admit i'm using opencv 4.0. will try 3.4 and then report again if that worked. thx.

[gitunit]

i had success by going back to opencv 3 (im using conda and didnt want to compile opencv again, so i rather changed the code to work with 4.x but somehow it got stuck). for people using conda who don't want to compile, try: "conda install -c menpo opencv3".

i'm almost there, the command
fmo-desktop --camera 0 --demo works but not when i use a .mp4 video as input. then i get a error: std::exception while opening that file. any idea about that?

[rozumden]

Thanks for your feedback.

I'm not sure. Maybe try some videos from our dataset, e.g. [ http://cmp.felk.cvut.cz/fmo/files/sequences/ping_pong_paint.mov ]. It works for this sequence for me.

[gitunit]

I'm not sure. Maybe try some videos from our dataset, e.g. [ http://cmp.felk.cvut.cz/fmo/files/sequences/ping_pong_paint.mov ]. It works for this sequence for me.

same problem.

maybe the opencv3 version was not compiled with ffmpeg?

[rozumden]

That's possible. Make sure that OpenCV is compiled and compatible with ffmpeg.

[gitunit]

ok. i just checked the buildinformation of that opencv3 build and got following:

Video I/O: DC1394 1.x: NO DC1394 2.x: NO FFMPEG: NO codec: NO format: NO util: NO swscale: NO resample: NO gentoo-style: NO GStreamer: NO OpenNI: NO OpenNI PrimeSensor Modules: NO OpenNI2: NO PvAPI: NO GigEVisionSDK: NO UniCap: NO UniCap ucil: NO V4L/V4L2: NO/YES XIMEA: NO Xine: NO gPhoto2: NO

so, i guess i will have to compile myself to get a proper opencv3 version :) thx