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TDA2PXEVM: Latency overhead of two pass WDR

user4836286
Expert 1300 points
Part Number: TDA2PXEVM

Hello,

Do you data about additional latency and memory bandwidth of two pass WDR compare to one pass WDR?

Recently I realized quality of two is very big and considering moving to two pass WDR. Before moving to two pass, I want to know additional overhead.

Best regards,

Wilson.

  • 0
    TI__Guru**** 475385 points
    Wilson,

    Two Pass WDR introduces additional one frame write and two additional read. Also it adds latency as it passes through ISP two times..
    Essentially, in the first pass, it read 16Bpp and writes 16Bpp, in the second pass, it reads two 16Bpp frames and writes YUV420 frame.

    Rgds,
    Brijesh