Linea HS Series Camera User's Manual
Camera Performance and Features
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Parallax Correction: Using the Camera at Non-Perpendicular Angles
to the Object
When using a camera at an angle to the objects surface, the object pixel size for the different
sensor arrays (for example, red, green and blue pixel arrays) are slightly different. This is due to
parallax. If the camera angle and the lens angular field of view are sufficiently large, this may
cause artifacts at the extremities of the image.
To correct for parallax pixels at lower magnification can be interpolated to provide the required
resolution. That is, for lower magnification array output, each pixel represents a slightly larger real-
world distance, therefore a smaller number of pixels are equivalent to the higher magnification
array output. Selection of the arrays to adjust is dependent on positive or negative angle; it is not
sensitive to scan direction.
Camera at
angle
stretches
more distant
array outputs
Projected color filters
@ object plane
Figure 36: Camera Angle Parallax
