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download internal checkerboard test pattern

Bing Ouyang1
Expert 1040 points

Is it possible to download the internal checkerboard test pattern (with 14x8 squares) image (or the procedure to recreate it)? We need it to calibrate the projector/camera system.

Thanks in advance,

  • 0
    TI__Genius 9935 points

    Bing,

    The checkerboard test pattern is internal. It can not be accessed directly and downloaded. You will have to create your own pattern using Irfanview, or some other image creation software (Gimp). The image should be a 608x684 bmp.

  • 0 in reply to Pascal DLP
    Expert 1040 points

    Pascal,

    Thanks. Could you please confirm the resolution of the internal checkerboard image really 608x684? Since the projected pattern looks quite different (~2:1 aspect ratio), compared to one from an external checkerboard pattern I generated myself with 608x684 resolution (where the displated image is ~4:3).

    Thanks.

     

  • 0 in reply to Bing Ouyang1
    TI__Expert 4500 points

    Bing,

    Sorry, the resolution of the 14x8 checkerboard is 854x480. Further details are available in section 2.2.3.2.1 (Page # 18) of the DLPC300 Programmer's Guide.

    Regards,

    Divya

  • 0 in reply to Divya Reddy
    Prodigy 80 points

    Hy Divya

    I have the same problem.When I send my own generated checkerboard with a resolution of 684 x 608px to the Light Crafter it looks like this:

    Then we tried a resolution of 854x480 px:

    The previous picture was a solid red picture. As you can see the checkerboard did not overwrite the whole Light Crafter resolution.

    At least we tried to expand the picture to a resolution of 854x684:


    It looks better but the ratio is still wrong. Any suggestion is highly appreciated