ETcVnContourApproximationMethod
Offers methods for contour approximation.
Syntax
Definition:
TYPE ETcVnContourApproximationMethod :
(
TCVN_CAM_NONE := 1,
TCVN_CAM_SIMPLE := 2,
TCVN_CAM_TC89_L1 := 3,
TCVN_CAM_TC89_KCOS := 4
)DINT;
END_TYPE
Values
|
Name |
Description |
|---|---|
|
TCVN_CAM_NONE |
No approximation, every single point is stored, i.e. two subsequent points are always direct neighbors (horizontal, vertical or diagonal). |
|
TCVN_CAM_SIMPLE |
Lossless compression of segments that form straight lines in horizontal, vertical or diagonal direction leaving only their endpoints (For instance, an up-right rectangle is reduced to its four corner points.) |
|
TCVN_CAM_TC89_L1 |
Compression using a Teh-Chin chain approximation algorithm (IEEE-paper C. Teh, R. Chin, On the Detection of Dominant Points on Digital Curves, 1989). |
|
TCVN_CAM_TC89_KCOS |
Compression using a Teh-Chin chain approximation algorithm (IEEE-paper C. Teh, R. Chin, On the Detection of Dominant Points on Digital Curves, 1989). |
Weiterführende Informationen
Über diesen Typ wird angegeben, ob - und wenn ja - wie die eine Kontur beschreibenden Punkte vereinfacht werden sollen.
- TCVN_CAM_NONE
Keine Vereinfachung der Konturbeschreibung, die Konturen werden anhand aller umschließender Punkte beschrieben.
- TCVN_CAM_SIMPLE
Verlustfreie Vereinfachung
- TCVN_CAM_TC89_L1
Vereinfachung der Konturpunkte mithilfe des Teh-Chin chain Approximation Algorithmus (IEEE-paper C. Teh, R. Chin, On the Detection of Dominant Points on Digital Curves, 1989).
- TCVN_CAM_TC89_KCOS
Vereinfachung der Konturpunkte mithilfe des Teh-Chin chain Approximation Algorithmus (IEEE-paper C. Teh, R. Chin, On the Detection of Dominant Points on Digital Curves, 1989).