Omron FQ User Manual page 43

Improving the Image Quality of Metallic and other Shiny Surfaces
When objects with shiny surfaces are being measured, the lighting may be reflected off the surface and affect
the image.
To remove reflections, one of the following two functions can be used.
Function
HDR (High Dynamic Range) If objects have contrasting light and dark areas, the dynamic range can be made wider to
improve the quality of the images.
Polarizing filter Specular reflections can be eliminated from an image by attaching a polarizing filter to the
Sensor.
• Selection Tips
• When the measurement object is not moving
• When the measurement object is moving
HDR Function
The HDR function is used for objects that have a large difference between light and dark areas. For this kind of
object, clear images cannot be achieved with the standard brightness setting. The HDR function combines
several images of different brightnesses (exposure times) so that the resulting image has a lower degree of
contrast and can be measured stably for the desired characteristic.
Inputting Images with a Limit Range of Brightness
FQ User's Manual
Description
→ Use the HDR function.
→ Use a polarizing filter.
Combining Images to Create an Image
with a Wide Dynamic Range
Dark
Bright
Adjusting Image Quality
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