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Some questions about the Face Detection on DM366

Tracy lee
Expert 1505 points
Other Parts Discussed in Thread: TMS320DM365

Hi All:

 I have some questions about the Face Detection on DM365:

1. Does the FD only support the input YUV420SP with resolution 320x192, or any resolution which less than 320x240??

2. How about the FD(Don't include Face Recognize) performance? From the debug message, seems it cost about 200 milliseconds, but from the spec, we can find "It takes 15 milli sec to detect multiple faces of size of 20x20 in a 320x192 input image", which one is correct??

Now I have tried the open the FD in AV_SERVER, but it can't detect any face, any comments?

Thanks.

  • 0
    TI__Genius 11000 points

    Tracy,

     

    For FD, height has to be 192. so please plan to use 320x192 as the resolution.

    Also, the performance is arround 15ms.

     

    From the details you shared it looks like the part number of DM36x you have does not have FD enabled in it.

    For that you need have the part number of DM36x to be TMS320DM365ZCEF.  If you order TMS320DM365ZCE, then this wont have facedetect enabled in it.

    This is the reason you observe 200ms with no faces detected

     

    Regards,

     

    Raghu


  • 0 in reply to Raghu Kudva
    Expert 1505 points

    Hi Raghu:

    Appreciate for you quick response! 

    Here are my comments for you:

    1. There may have some issue if we fixed the input image resolution, for example, we can capture the 1280x720 from the sensor, if we fixed the input the image resolution to 320x192, the face position may be not exact when we draw the face window on 720P streaming base on the output position from Face detection, because the scale is not the same, right?

    2. Why the height has to be 192, I can't find this in spec, could you help suggest where I can find this?

    3. Could you help suggest where I can get the type and function table of the DM365 chipset?

  • 0 in reply to Tracy lee
    TI__Genius 11000 points

    Hi tracy,

     

    For issue 1) & 2), the width height as per 720p with 16:9 aspect ratio is 320x180, so rounding to next multiple of 16 it needs to 320x192. SInce aspect ratio will be same, extrapolating to main resolution of 720p should not cause that much of an issue. We use this in RDK.

     

    For issue 3), you can find various part details at http://www.ti.com/product/tms320dm365

     

    Regards,

     

    Raghu

     

  • 0 in reply to Raghu Kudva
    Expert 1505 points

    Hi Raghu:

    Thanks for you reply, it's helpful!