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what does the intensity channel of a point cloud refer to?

asked 2011-08-25 08:33:53 -0500

diannay gravatar image

From the rviz wiki, it seems intensity is related to colour? What type of information is encoded in the intensity of a point in a point cloud?

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answered 2011-08-25 09:17:49 -0500

Chad Rockey gravatar image

updated 2011-08-25 09:19:26 -0500

This is typically a sensor-dependent "brightness" of return, representing some quality of measurement: energy returned, pixel value, etc. Sometimes it can look like a greyscale brightness. See the images on the right here to view some images produced by a laser scanner returning intensities.

Just be aware that sometimes it isn't human color dependent. Some materials reflect IR laser beams very well but appear black to our eyes.

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Asked: 2011-08-25 08:33:53 -0500

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Last updated: Aug 25 '11