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DLP3010EVM-LC: How to setup internal patterns in DLP3010EVM, DLPC3478 and DLPA2005

Danilo A.
Mastermind 24715 points
Part Number: DLP3010EVM-LC
Other Parts Discussed in Thread: DLPC3478

Hi Team,

We would like to ask your help regarding our customer's inquiry below.

I want to generate phase shift pattern for 3D measurement. I knew the theory behind it. 
At least 3 patterns, I want to project with phase difference of 120degree? How this normally works? How can I create the 1D pattern image for this?  
Attached is a patten which I want to generate. Please have a look.
Regards,
Danilo
  • 0
    TI__Expert 5310 points

    Hello Danilo,

    Are you planning on using internal pattern mode for this?

    Can you clarify on what you mean by having a phase shift of 120 degrees? Do you want three images shown in succession with equal pre-exposure, exposure, and post-exposure timings? Do they want the same base image but the shifted left of right to get the offset?

    Regards,

    John 

  • 0 in reply to John McKnight
    TI__Mastermind 24715 points

    Hi John,

    Thank you for your response. Here the feedback from our customer.

    I will explain my problem here in detail.
     
    i have dlp3010evm-lc with dlpc3478.
     
    I am performing fringe projection experiment. For that i am using phase shifted pattern. So i want to project these pattern from dlp to the object surface.


    Generally the idea is, project a periodic pattern with several phase shifts. 

    First, sin(omega-x),

    Then, sin(omega-x+120degree)

    Then, sin(omega-x+240degree)

    But how can i project these patterns from dlp?

     

    Regards,

    Danilo

  • 0 in reply to Danilo A.
    TI__Expert 5310 points

    Hello Danilo,

    Can you try something for me on the EVM and tell me if this is the behavior wanted?

    Can you try using internal pattern mode inside of the Light Control GUI.

    You can make a pattern set with the three images that you want in the order that you want displayed.

    You can set the illumination and timings that you want these patterns shown with. The illumination will only offer R/G/B colors.

    Can you tell us if this gives the results that you want?

    Regards,

    John