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Advanced| Module: | Calibration |
|---|
Detects a chessboard calibration grid on the image, and returns calibration points where 4 chessboard squares meet.
Applications
Camera calibration, image to world coordinates transformations.
| Name | Type | Range | Description | |
|---|---|---|---|---|
 |
inImage | Image | Input image | |
|
inRoi | Region* | Range of pixels to be processed | |
|
inBoardSize | Size | Number of checkerboard squares in X and Y dimensions. | |
|
inWorldSquareSize | Real | 0.001 -  |
Real-world length of a single chessboard square. |
|
inFastApproximate | Bool | Fast filter execution, but result is approximate. | |
 |
outImagePoints | Point2DArray? | Image coordinates of detected calibration points. | |
|
outWorldPlanePoints | Point2DArray? | World plane coordinates of detected calibration points. | |
Errors
This filter can throw an exception to report error. Read how to deal with errors in Error Handling.
List of possible exceptions:
| Error type | Description |
|---|---|
| DomainError | Input image is too small |
| DomainError | Input image must have pixels of UInt8 type |
| DomainError | Specified board is too small, minimum size is 4x4 |
Complexity Level
This filter is available on Advanced Complexity Level.
