CODEWITHSUNDEEP
opencvcamera-calibration
Engine
Engine

Reputation: 5432

3d camera calibration using opencv

I'm working on the calibration of a camera using opencv, I run the given sample project, my question is how to set the metric system in the input data for ex.:

  <!-- The size of a square in some user defined metric system (pixel, millimeter)-->
    <Square_Size>(1,10)</Square_Size>

does it mean that every pixel represent 10um ? thanks in advance for you help

Upvotes: 2

Views: 753

Answers (1)

Sassa
Sassa

Reputation: 3334

Assuming you use the classic checkerboard for calibration, square size is the actual physical size of a square in that board. For example, if it is 10cm, you should put <Square_Size>10</Square_Size>. Alternatively, you could express it in inches and put <Square_Size>3.937</Square_Size>. This is the units that it refers to. The size is used by OpenCV to create the model coordinates and the units do not affect your resultant calibration parameters.

Upvotes: 2

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