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TDA4VM: Possibility on stitiching 2 images other than overlay manager

Dinesh bharathi
Intellectual 751 points
Part Number: TDA4VM

Hi, 

Is it possible to merge/stitch 2 different frames Top & Bottom prior to the DSS block? The 2 images are pixelwise aligned in dimesions, it is mostly like image 2 getting added to the image 1 from last line of Image 1.
Such possibilities exist?

Regards,
Dinesh

  • 0
    TI__Guru**** 475205 points

    Hi Dinesh,

    There isn't any HW module, which can stitch images like this, but the probably we can modify one of the existing module to write the output in the buffer, which are next to each other. 

    Regards,

    Brijesh

  • 0 in reply to Brijesh Jadav
    Intellectual 751 points

    Hi Brijesh, 

    This is good. Solves part of the problem for us.

    But there is one catch to this approach, i cannot zoom only one of the 2 stitched ones, which is required for our application. 
    Let me put it here: We have 4 displays with 6 different images. i.e out of the 4 displays 2 of them is going to have 4(of 6) images, each 1 having 2 images stitched top to bottom and the remaining 2 displays will have remaining 2(of 6) images . 

    Here the catch is, I have to zoom in on one of the stitched images, not both top and bottom together. Zoom needs to be applied only on the top part. If we do it directly we ll have to use the overlay manager and use the 4(of 6) images, that way i can use VID pipeline scalar to zoom in on the required image but stitch using overlay manager. But with this model i cannot feed the remaining  2(of 6) images.

    Please let me know if you can suggest a smart way around this.

    Regards,
    Dinesh

  • 0 in reply to Dinesh bharathi
    TI__Guru**** 475205 points

    Hi Dinesh,

    You would probably have to zoom-in operation externally, may be on DSP. Since all display pipes are already used, we can't use WB pipeline, so i dont see any other option..

    Regards,

    Brijesh