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DM6467 Digital Zoom, Is it possible?

babs76
Intellectual 390 points

Hello,

I need to perform a digital zoom on a DM6467, 2x, 4x. The VDCE resizer only reduces size and does not magnify/upsample. The image data is in 4:2:2 semi-planar format.

Can this be done somehow through the HDVICP or other means? If there were three planes, this would be straight forward with DMA. Any help is greatly appreciated.

 

  • 0
    TI__Expert 4680 points

    The only way to do the upscaling on DM6467 is through DSP processing. C64x based algorithm.

    Regards

    Asheesh

  • 0 in reply to Asheesh Bhardwaj
    TI__Intellectual 1970 points

    As Asheesh suggested, it would be possible to upscale using the DSP.

    I am not sure why you think the Semi-planar format will be a problem if you are using the DMA. The semi-planar format only means that Luma is one plane, and CbCr is interleaved as another plane. You can still use the DMA to get the data into L2 for DSP to access. The DSP can still write the upscaled chroma data in CbCr interleaved manner into L2 and then the DMA could transfer this upscaled pixels to DDR.

     

    Regards,

    Kapil

  • 0 in reply to Kapil Ahuja
    Intellectual 390 points

    The semi-planar format is not an issue, I've accomplished the digital zoom with the DMA. I just had to think a little about the CrCb striding. I was just curious if there was something that could do the digital zoom natively, in like say the HDVICP.

     

    Thanks,

     

    Brent