National Instruments NI Vision NI 17xx 用户手册

image pixels to black. Pixels inside the threshold interval are considered 
part of the particle region. Pixels outside the threshold interval are 
considered part of the background region.

Inverse binarization reverses the assigned bit numbers of the particle region 
and the background region. All pixels that belong in the threshold interval, 
or the particle region, are set to black, and all pixels outside the threshold 
interval, or the background region, are set to the image white value.

Figure 3-5 illustrates binarization and inverse binarization.

Figure 3-5.  Binarization and Inverse Binarization

You can enable hardware binarization in the following ways:

•

In Vision Builder AI, configure the Lookup Table attribute on the 
Advanced tab of the Acquire Image (Smart Camera) step. Refer to 
the NI Vision Builder for Automated Inspection: Configuration Help 
for more information.

•

In MAX, use the Lookup Table drop-down box on the LUT tab of the 
smart camera configuration page to enable hardware binarization. 
Refer to the Measurement & Automation Explorer Help for NI-IMAQ 
for more information.

NORMAL

Stored V

alue

Sampled Data

INVERSE

Stored V

alue

Sampled Data