Microscan Visionscape FrontRunner, Руководство пользователя

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Basic Concepts
FrontRunner™
2
v4.1.3, April 2012 Visionscape FrontRunner™ User’s Manual 2-7
Important Visionscape
®
Steps
After you click Create New Program, and before you add any steps or
tools to your Job, we’ll look at the following steps, which are key steps in a
Visionscape
®
Job:
• The Acquire Step
• The Snapshot Step
• The Vision System Step
The Acquire Step
The Acquire step is one of the most important steps in Visionscape
®
,
since it is the step where you can specify the following:
• Acquisition method, which is how the camera acquires images.
Acquisitions can be triggered or non-triggered.
• Gain and Offset, which determine what is applied to the incoming
video signal.
Note: The Visionscape
®
Tools Reference contains detailed
information about Gain and Offset:
Chapter 1 describes these advanced datums on the Acquire
properties page.
Chapter 13 describes the GainOffset Filter in detail.
• Exposure time, which is the amount of time, in micro seconds, that
the camera’s CCD will integrate light. Exposure Time can freeze
motion when not using a strobe, or if you are using a strobe, it can
prevent ambient light from affecting your image.
• Photometry and Lighting, which is the light source powered by the
camera.
• Triggers, which can be virtual or physical
The Acquire step is inserted automatically as a component of the
Snapshot step. There is always a one-to-one relationship between