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Original question:

TDA4VE-Q1: Under the condition of low gain, the picture contrast saturation clarity is abnormal

TDA4VE-Q1: About the X3C picture dragging problem

chenzhe
Prodigy 180 points
Part Number: TDA4VE-Q1

hi, TI experts,

Recently, we found serious drag image in the road test, which is reflected in the effect below. On the left is our comparison image, and on the right is drag image problem. It seems that this problem is not the drag image problem caused by too long exposure time, and our maximum exposure time is 10ms. The real-time exposure time given by DCC is about 2000-3000us, but the picture still appears a relatively serious drag, may I ask how this happened? We suspect a fusion problem.

  • 0
    TI__Mastermind 37300 points

    Hi,

    I suppose you mean motion blur by picture drag.

    chenzhe said:
    We suspect a fusion problem

    Yes, that is typically a sensor setting issue.

    chenzhe said:
    exposure time given by DCC is about 2000-3000us

    I guess this means that AE output exposure time is 2~3ms.
    In general, I don't expect motion blur to happen with short exposure time.

    You shall check if those 2~3ms values translate correctly into the sensor register values.
    Please consult OVT about these sensor setting details.

  • 0 in reply to Gang Hua
    Prodigy 180 points

    No, maybe my explanation is not correct. The image was captured from the video, and I did not drag the picture. In the video, all moving objects have the dragging problem or motion blur problem

  • 0 in reply to chenzhe
    TI__Mastermind 37300 points
    chenzhe said:
    No, maybe my explanation is not correct.

    What is this "No" for?

    chenzhe said:
    The image was captured from the video, and I did not drag the picture.

    This is the same as my understanding that you mean "motion blur" by "picture drag".

    chenzhe said:
    In the video, all moving objects have the dragging problem or motion blur problem

    I can see motion blur clearly on some objects.
    ISP cannot create motion blur in general.
    It is typically caused by either large exposure time or WDR merging in sensor.