Specifications

Intel
®
Image Processing Library Reference Manual
10-18
10
GreaterSFP
Tests if the image’s pixel values
are greater than a floating-point
scalar value.
IPLStatus iplGreaterSFP (IplImage* src , float s ,
IplImage*
dst );
src Thesourceimage.
s The 32-bit floating-point scalar value to be
compared with pixel values.
dst The resultant 1-bit image.
Discussion
The function iplGreaterSFP() compares the pixels of the input image
src and a scalar value s for “greater than” and writes the results to a 1-bit
image
dst . If an input pixel’s value is greater than s ,thenthe
corresponding pixel in
dst is set to 1; otherwise the pixel in dst is set to 0.
The function supports only images with 32-bit floating-point pixel data.
(For images with data of other types, use the function
iplGreaterS()
described on the previous page.) If the source image COI is not set, a pixel
is considered to be “greater” than
s only if each channel in the pixel is
greater than
s . If the COI is set, the function compares s and the pixel
values in the COI.
The function returns
IPL_StsOK if the compare operation is successful.
If you pass an image with data of an unsupported type or a null pointer, the
function does not perform the compare operation and returns an error status
code.