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Stereo vision using two USB cameras in real time

Other Parts Discussed in Thread: OMAPL138

Is there any TI DSP board that can take image inputs (640 X 480 or 320 X 240) from two USB cameras simultaneously and process them in real time (i.e perform the stereo vision algorithms written in C) to generate a dense disparity map. It will be good if the DSP board comes with two USB ports and supports OpenCV.

P.S:- I will be using Logitech C270 webcams

Thanks in advance,

Pratesh

  • HI Pratesh,

    You can connect a USB hub into the USB port and connect one or more USB cameras.

    I would recommend you to go to www.ti.com and search in the product catalogue
    You might be intereseted in visiting the OMAPL138 LCDK in which the face detect algorithm is demonstrated.

    Regards,
    Shankari
  • Thanks Shankari for reply.

    So if connect a USB hub to the port then can I access the video frames from two cameras simultaneously ?

    Because in the question (link below)

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/99/t/65430

    The reply by Paul.Yin mentions that

    "how much overhead there is during "switching" and how often you need to switch between the two cameras (every frame), because there is only one USB port."

    So do I have to switch between the two cameras to capture the respective frames or can I simultaneously access them (without any minor time lapse) .

    Thanks in advance ,

    Pratesh
  • Hello Pratesh,

    To my understanding, When you are using a HUB, you can able to access two cameras simultaneously. However you have to ensure about the sum of data rate of two cameras must be within the USB bus bandwidth.

    For example, if you are using a camera with 640 x 480 pixels, the data rate is 640*480*bits per pixel*FPS.

    Regards,
    Senthil