Specifications

Geometric Transforms
11-1
11
This chapter describes the functions that perform geometric transforms
to resize the image, change the image orientation, or warp the image. There
is also a special function,
iplRemap(), for performing geometric
transforms with a user-defined coordinate mapping.
Table 11-1 lists image geometric transform functions and macro
definitions.
Table 11-1 Image Geometric Transform Functions and Macros
Group Function Name Description
Resizing
iplZoom
Zooms or expands an image.
iplDecimate
Decimates (shrinks) an image.
iplDecimateBlur
Blurs an image, then decimates the
blurred image.
iplResize
Resizes an image.
iplZoomFit
iplDecimateFit
iplResizeFit
Change image size using image’s
dimensions to set scaling factors
(macro definitions).
Changing
iplMirror
Mirrors an image.
Orientation
iplRotate
Rotates an image.
iplGetRotateShift
Computes the shift for iplRotate() ,
given the rotation center and angle.
iplRotateCenter
Rotates an image around an arbitrary
center (macro definition).
Warping
iplShear
Shears an image.
iplWarpAffine
Performs affine transforms with the
specified coefficients.
Continued
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