Specifications

GeometricTransforms
11-13
11
iplRotateCenter
Thisfunction-likemacroallowsto
rotateanimagearoundthegiven
center.
iplRotateCenter( srcImage, dstImage, angle, xCenter ,
yCenter , interpolate );
srcImage Thesourceimage.
dstImage Thedestinationimage.
angle Theangle(indegrees)torotatetheimage
aroundthepointwithcoordinates
(
xCenter , yCenter ).
xCenter , yCenter Coordinates of the center of rotation.
interpolate Thetypeofinterpolationtoperformfor
resamplingtheinputimage.Thefollowing
modesaresupported:
IPL_INTER_NN Nearestneighbor.
IPL_INTER_LINEAR Linearinterpolation.
IPL_INTER_CUBIC Cubicinterpolation.
+IPL_SMOOTH_EDGE Smoothedgesofanimage.
Canbeaddedto
interpolationbyusing
bitwiselogicalOR.
Discussion
UsethemacroiplRotateCentertorotateanimagearoundanarbitrary
center.Therotationcentercoordinates(
xCenter , yCenter ) are passed
asarguments,andthecalltotheauxiliaryfunctionthatrecomputesthe
shiftsishidden.