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Camera Performance and Features
Linea2 5GigE Series Camera
Examples of color artifacts generated by a small encoder error:
Figure 36: Color Artifacts Example (encoder 19 µm)
Image Details:
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Object Pixel Setup for 20 µm
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Encoder set at 19 µm
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Forward Scanning
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Can be corrected with 20/19 = 1.05 Spatial Correction
Figure 37: Color Artifacts Example (encoder 21µm)
Image Details:
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Object Pixel Setup for 20 µm
•
Encoder set at 21 µm
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Forward Scanning
•
Can be corrected with 20/21 = 0.95 Spatial Correction
If there are several different camera angles and associated illumination configurations in the
inspection system, a single encoder pulse will not provide the correct timing for all the cameras.
For example, as the camera angle moves away from perpendicular, the image row spacing
increases. If the encoder resolution remains constant for perpendicular operation, many encoder
pulses will be too closely spaced, apparent row spacing will increase and the spatial correction will
need to be increased.
