rajchinna's profile - activity

StevenPutteman,

Thanks a lot for the response. With respect to the above scenario we are not doing any processing we are just placing the frames into a dict in python for post processing. During this time we are simply reading frame by frame and putting into the dict.

As you mentioned getting 30 fps is really a great thing, however the automotive UI that we capture is going rendering the screen way more than 30 fps. So, that's the one reason why we are looking for the a high fps camera. We are getting the 30 fps only after putting into the release mode.

It will be really helpful if you could share few more details (resolution, mega pixel, model) about the 150 fps camera ,also some details about the host pc that your using for the processing.

thanks in advance.

Hi,

I am looking to build an python application that helps us to verify the UI rendering on the automotive devices, right now I am using a Logitech c920 webcam for recording the device UI at 640 x 480 resolution in 30 fps (the max I could get with opencv).

but, we feel that we are missing out some transitions when we capture at 30 fps, so we are looking to get some high speed camera for capturing the automotive devices. Before getting on I just wanted to know what's the max FPS that's supported by OpenCV. Right now with the logitech webcam it captures at around 29-31 fps.

My questions here,

1. Will open CV support if I buy a camera at 60/90 fps with high resolution, note right now am building this on python.
2. If it supports will it be possible for me to capture the images (with query api) at 60\90 fps.
3. Are there any limitations with the camera models? If, yes give me pointer to the supported high frame rate camera (better resolution) models.

Hi,

I need help in building the opencv 2.4.6 in ubuntu 13.04 64bit with Java support. I am trying it for last 2 days and didn't get any positive result. All ways th code failes at this location. I know this is because of some problem with the libv4l dependency. TOday I compiled and installed this libv4l lib into my machine, but still I got this error.. I have tried lib 0.8.8 to 1.0.0 version and am facing the following issue on all the versions.

Please help me to solve this issue.

[ 23%] Built target opencv_test_flann [ 23%] Built target opencv_perf_highgui_pch_dephelp [ 23%] Built target pch_Generate_opencv_perf_highgui Linking CXX executable ../../bin/opencv_perf_highgui /usr/bin/ld: ../../lib/libopencv_highgui.a(cap_libv4l.cpp.o): undefined reference to symbol 'v4l2_munmap' /usr/bin/ld: note: 'v4l2_munmap' is defined in DSO /usr/local/lib/libv4l2.so.0 so try adding it to the linker command line /usr/local/lib/libv4l2.so.0: could not read symbols: Invalid operation collect2: error: ld returned 1 exit status make[2]: * [bin/opencv_perf_highgui] Error 1 make[1]: [modules/highgui/CMakeFiles/opencv_perf_highgui.dir/all] Error 2 make: ** [all] Error 2

reference links followed.

http://jayrambhia.wordpress.com/2012/06/20/install-opencv-2-4-in-ubuntu-12-04-precise-pangolin/

http://www.ozbotz.org/opencv-installation/

http://docs.opencv.org/doc/tutorials/introduction/desktop_java/java_dev_intro.html

http://forum.ivorde.ro/ffmpeg-error-while-loading-shared-libraries-libavdevice-so-52-cannot-open-shared-object-file-no-t129.html

http://www.cloudjim.com/install-opencv-242-on-ubuntu-1204-lts.html

Am I missing something in my steps, i have no clue how to solve this issue.

Thanks in advance for your support.