Cirrus Logic CS485 Dokumentacja Pobierz pdf (Strona 216)

Intel

Image Processing Library Reference Manual

10-18

GreaterSFP

Tests if the image’s pixel values

are greater than a floating-point

scalar value.

IPLStatus iplGreaterSFP (IplImage*

src

, float

IplImage*

dst

);

src

Thesourceimage.

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

for “greater than” and writes the results to a 1-bit

image

dst

. If an input pixel’s value is greater than

,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

only if each channel in the pixel is

greater than

. If the COI is set, the function compares

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.

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