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cvEstimateChessboardSharpness

Basic

Module: OpenCV

Estimates the sharpness of a detected chessboard. Image sharpness, as well as brightness, are a critical parameter for accuracte camera calibration.

Name Type Range Description
Input value
 inImage Image Input image
Input value
 inPatternWidth Integer 3 - Pattern width (chessboard columns - 1)
Input value
 inPatternHeight Integer 3 - Pattern height (chessboard rows - 1)
Input value
 inCorners Point2DArray
Input value
 inRiseDistance Real 0.001 - 1.0 Rise distance 0.8 means 10% ... 90% of the final signal strength
Input value
 inVertical Bool
Output value
 outAverageSharpness Real
Output value
 outAverageMinBrightness Real
Output value
 outAverageMaxBrightness Real

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 Both width and height of the pattern should be bigger than 2 in cvEstimateChessboardSharpness.
DomainError Empty image in cvEstimateChessboardSharpness.
DomainError inImage must have 1 channels of type UInt8 in cvEstimateChessboardSharpness.

Complexity Level

This filter is available on Basic Complexity Level.