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DLP4500： dlp4500 Calibration board square size and unit problem

user6059455
Prodigy 20 points
Part Number: DLP4500

Hello everyone, some questions I want to ask.
Sorry, my English is not good, I can only translate from the Internet, please forgive me.
The operational steps are in accordance with the official manual dlpu019a.pdf

First question: Calibration board size of the square problem.

- On page 32 of dlpu019a.pdf "For example, if each square is 2 cm wide, enter "2" into the prompt"

Since the size of the square of the example is "2 cm", you can enter "2" in the command window.

However, I measure my square size is "0.9 cm", so I don't know if I can type "0.9" directly into the command window. Thank you.

 

Second question: Because of the red line in the picture ,  If I want the point cloud distance unit to be changed, where should I go to change the size
For example: cm changed to mm, where can  I go to set it?

  • 0
    TI__Mastermind 20045 points

    Hello,

    You should be able to enter decimal units (e.g. 0.9). Feel free to try and lest us know if you have any issues. The units don't matter to the program and you can use your desired units. The actual units themselves are not stored in the resulting point cloud. 

    Thanks,
    Kyle

  • 0 in reply to Kyle Rakos
    Prodigy 20 points

    Hello Kyle,

    Thank you for your reply.

    But I still have some issues.

    1. "You should be able to enter decimal units (e.g. 0.9)" ←This one I can understand.  

    2. "The units don't matter to the program and you can use your desired units" ← But I cant understand how can I use my desired units.

    In this picture, I have no space to enter my desired units, I can only enter the length of the square at the red line.

    Thanks,

    Chris

  • 0 in reply to user6059455
    TI__Mastermind 20045 points

    Hello Chris,

    You do not enter units into the program. The resulting output is unitless. Therefore, you can use whatever units you want as long as you are consistent. They will simply not be stored in the program. For example if you use inches, all numbers input and output will be in inches; however this unit is not stored anywhere.

    Thanks,

    Kyle