Sony's first polarized sensor! How Polar I Collects Angles of Polarization

Updated: Apr 8, 2018

The global shutter IMX250MZR CMOS sensor maintains the same pixel size, frame rate and optical format as the popular IMX250 it is based on. While the addition of a polarizer lowers quantum efficiency , the IMX250MZR also shares the exceptionally low read noise characteristic of other Sony Pregius sensors. Even with it’s lower quantum efficiency, the absolute sensitivity threshold of this sensor is still better than most CCDs.

Polar I is a company created out of MIT Media Lab specializing in ultra high resolution 3D modeling. Multiple angles of polarization can be gathered and surface normals can be recalculated to provide ultra high-resolution point clouds at sub mm resolution.

Advantage about polarization sensing:

•Polarized signal does not depend on temperature difference •Polarized signal shows contrast between adjacent surfaces, which makes finding different surface normals and different materials easier than conventional IR and visible imagery

Polarization enhances edges due to the abrupt change in surface orientations making it easier to find edges within an object and to find the edges of an object in a background than conventional IR and visible imagery

•Signal may be present even when unresolved

•Polarization cues do not change with distance and is often used in astronomy

Polar I software combined with the Sony polarized sensor brings a low cost ultra high resolution 3D scanning solution to the market.

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