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Chapter 6
Image Processing Functions
interval of (255,255) after processing the first 254 particles. The aim of this threshold is
to eliminate the first 254 particles to visualize the next 254 particles.
Note:
The source and destination images must be of the same image type and
their borders must be greater than or equal to 2.
Image type: IPI_PIXEL_U8, I16
Input
source_image is the image to process.
dest_image is the resulting image.
connectivity_8 indicates the connectivity used for particle detection. The connectivity
mode directly determines if an adjacent pixel belongs to the same particle or a different
particle.
Possible values are:
•
TRUE — The function completes particle detection in connectivity mode 8.
•
FALSE — The function completes particle detection in connectivity mode 4.
Output
labelled_particles contains the number of particles detected in the image.
IPI_Threshold
IPIError = IPI_Threshold (IPIImageRef source_image, IPIImageRef
dest_image, float min_value, float max_value, float new_value, int
do_replacement);
Purpose
This function applies a threshold to an image.
Image type: IPI_PIXEL_U8, I16, SGL
Input
source_image is the image to process.
dest_image is the resulting image.
min_value is the lowest pixel value considered.
IMAQ Vision for LabWindows/CVI
6-12
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