Frontal view imaging and control device installed on movable...

Details Frontal view imaging and control device installed on movable... Frontal view imaging and control device installed on movable...

2008-06-16

2011-11-01

Azarian, Seyed (Department: 2624)

Image analysis

Applications

Vehicle or traffic control

C382S219000, C340S932200

Reexamination Certificate

active

08050458

ABSTRACT:
A frontal view imaging and control device installed on a movable object, includes: an image input unit receiving an image taken by an image device that captures a region of a road surface in a predetermined direction; a projection transformation unit linking each pixel of the image onto a virtual two-dimensional plane of a road surface through coordinate transformation so as to form a virtual projection image on the two-dimensional plane; a projection likelihood calculation unit dividing the virtual projection image into a distant view section and a close view section, and calculating similarity defined between a projection of the distant view section and a projection of the close view section; and an attitude angle calculation unit determining an angle of depression and a panning angle that maximize the similarity as a measured attitude angle that indicates an image capturing direction of the imaging device.

REFERENCES:
patent: 7266220 (2007-09-01), Sato et al.
patent: 7375651 (2008-05-01), Shimazaki et al.
patent: 7616781 (2009-11-01), Schofield et al.
patent: 7728721 (2010-06-01), Schofield et al.
patent: 7852462 (2010-12-01), Breed et al.
patent: 7873187 (2011-01-01), Schofield et al.

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