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DetectChessboardGrid_Deprecated

Basic

Module: Calibration

Detects a chessboard on the image, and returns the points where 4 chessboard squares meet.

Applications

Preparation of data required for creating image undistortion map.
Name Type Range Description
Input value
 inImage Image Input image
Input value
 inChessboardWidth Integer 4 - Number of ranks (columns) of the chessboard
Input value
 inChessboardHeight Integer 4 - Number of files (rows) of the chessboard
Input value
 inGridOrigin Point3D Real-world coordinates of top-left grid point
Input value
 inSquareDimension Real 0.0 - Real-world length of a single chessboard square (mm)
Input value
 inAdaptiveThresholding Bool Use adaptive thresholding instead of a global threshold of average
Input value
 inImageNormalization Bool Normalize input image using histogram equalization prior to detection
Input value
 inAdditionalFiltering Bool Use more criteria for eliminating false chessboards
Input value
 inPresenceCheck Bool Perform a fast approximate test of chessboard presence before locating it
Input value
 inSubpixelRefinement Bool If corners are found, post-process them to improve precision
Output value
 outImageGridPoints Point2DArray?
Output value
 outWorldGridPoints Point3DArray? Corresponding 3D (World) points, generated from grid origin and square dimension

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 Empty inImage in DetectChessboardGrid.
DomainError Error in DetectChessboardGrid: Error message
DomainError Error in DetectChessboardGrid:Error message

Complexity Level

This filter is available on Basic Complexity Level.