TOSHIBA TELI CORPORATION
Reflection & polarization of light in machine vision
In shooting a subject with high reflectance, glare or shine reflected by light from the source frequently affects image processing. In this case, polarizer is generally used as counter measure. Why only affection of glare or shine is removed? Reflection and polarization of light is described here for easy understanding.
Color Appearances of Invisible Light by an IR Cutoff Filterless Color Camera
There are some applications which take the images using a color camera without the IR cutoff filter (IRCF) under invisible light in Machine Vision Systems, but the color appearances of these applications are rarely talked about.
Therefore, the image data of mono wavelength light (MWL) which are including UV, IR and visible light were taken by using an IR cutoff filterless (IRCF-less) color camera.
Consideration for depth of field in machine vision
In the machine vision field, optical magnification is important to select taking lens or to consider optical system.
However, it is not well known and sometimes confused that magnification has a meaning other than imaging magnification, generally known, which indicates size ratio of object and image.
We would like to explain, here, a concept and applications of magnification clearly.