Specifications

User Defined Functions
13-7
13
UserProcessFP
Calls user-defined function
to separately process each
channel value of pixels in
images with all data types.
void iplUserProcessFP( IplImage* srcImage , IplImage*
dstImage , IplUserFuncFP cbFunc );
srcImage Thesourceimage.
dstImage The destination image.
cbFunc The pointer to the user-defined function (of
IplUserFuncFP type).
Discussion
The function iplUserProcessFP() scans pixels of a source image
srcImage , retrieves respective channel values, and passes them to the user-
defined function
cbFunc for processing. The source image can contain
either integer data of 8-, 16-, 32-bit depth, or floating-point 32f data.
Before passing channel values to
cbFunc , the function
iplUserProcessFP() converts them to float type.
After processing by
cbFunc , the returned values are saturated to the
destination data range (except the case of 32f image data), and written to
the respective channel of the destination image
dstImage .
The function
iplUserProcessFP() supports tiled images and images with
rectangle ROI and mask ROI. The operations can be performed in-place.
The source and destination images must contain data of the same bit depth
and have the same number of processed channels.