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This chapter describes how to set up your imaging system, acquire and 
display an image, analyze the image, and prepare the image for additional 
processing.

Before you acquire, analyze, and process images, you must set up your 
imaging system. How you set up your system depends on your imaging 
environment and the type of analysis and processing you need to do. Your 
imaging system should produce images with high enough quality so that 
you can extract the information you need from the images.

Complete the following steps to set up your imaging system.

1.

Determine the type of equipment you need given your space 
constraints and the size of the object you need to inspect. Refer to 
Chapter 3, System Setup and Calibration, of the IMAQ Vision 
Concepts Manual for more information.

a.

Make sure your camera sensor is large enough to satisfy your 
minimum resolution requirement. 

b.

Make sure your lens has a depth of field high enough to keep all 
of your objects in focus regardless of their distance from the lens. 
Also, make sure your lens has a focal length that meets your 
needs.

c.

Make sure your lighting provides enough contrast between the 
object under inspection and the background for you to extract the 
information you need from the image.

2.

Position your camera so that it is perpendicular to the object under 
inspection. If your camera acquires images of the object from an angle, 
perspective errors occur. Even though you can compensate for these 
errors with software, NI recommends that you use a perpendicular 
inspection angle to obtain the most accurate results.