FingerImage.cannyEdgeDetectionTo Method¶

Definition¶

Applies Canny edge detection to a grayscale image.

The Canny edge detector uses a multi-stage algorithm to detect edges in images.

Note

Only grayscale 8-bit images are supported.

void cannyEdgeDetectionTo(double lowThreshold, double highThreshold, FingerImage dstFingerImage)

Parameters

lowThreshold double
in First threshold for the hysteresis procedure (lower values detect more edges).

highThreshold double
in Second threshold for the hysteresis procedure (must be greater than low_threshold).

dstFingerImage FingerImage
in The destination Image that receives the edge-detected image.

Exceptions

FingerException

An error has occurred during Finger Library execution.