Running Opencv sample in linux terminal

[Khaled Shal]

I want to run select3dobject.cpp from opencv samples in ubuntu 12.04 virtual machine terminal .I succeeded to compile the code but I could'nt run it. Anyone can help me with the right parameters to enter so that it works ( I want the program to read data from video file not from camera).
Thanks.

[ne555]

¿can't you read the usage?

select3dobj -w <board_width> -h <board_height> [-s <square_size>]
           -i <camera_intrinsics_filename> -o <output_prefix> [video_filename/cameraId]

 -w <board_width>          Number of chessboard corners wide
 -h <board_height>         Number of chessboard corners width
 [-s <square_size>]            Optional measure of chessboard squares in meters
 -i <camera_intrinsics_filename> Camera matrix .yml file from calibration.cpp
 -o <output_prefix>        Prefix the output segmentation images with this
 [video_filename/cameraId]  If present, read from that video file or that ID

[Khaled Shal]

Thanks for your answer.
What's exactly the output_prefix ?

[ne555]

The program will generate a lot of images, the output_prefix refers to the filename of them.
By instance img001.png, img002.png, img003.png (the prefix in this case is img)