Image motion compensation system
First Claim
1. An image motion compensation arrangement for enabling stabilization of the line of sight of a television camera assembly resiliently mounted on a vehicle, including an optical system consisting of a first part constituted by a reflector and a second part constituted by a light source and a photodetector arranged to receive an image of the light source after reflection at said reflector, one part being rigidly coupled to the television camera assembly and the other part being rigidly coupled to the vehicle, said camera assembly including a camera tube, means for deriving from the photodetector electrical signals representative of the angular components of motion of the television camera assembly relative to the vehicle, and means responsive to said derived electrical signals for offsetting an output image of said camera tube by an amount to compensate for said angular components of motion.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention provides an image motion compensation arrangement for enabling stabilization of the line of sight of a scanned imaging system mounted on a vehicle. In one example the scanned imaging system is a television camera assembly which is resiliently mounted and carries a plane mirror on to which is directed, via an auto-collimating lens, light from a light emitting diode. Light reflected by the plane mirror passes back through the auto-collimating lens to be received by a detector having quadrant receiving surfaces which resolve the complex motion of the camera assembly during movement of the vehicle into two orthogonal components defining the angular error caused by the motion in the sight line of the camera. The two orthogonal components are utilized to provide a pair of electrical signals utilizable to correct for the image motion resulting from the rotation of the sight line.
17 Citations
10 Claims
- 1. An image motion compensation arrangement for enabling stabilization of the line of sight of a television camera assembly resiliently mounted on a vehicle, including an optical system consisting of a first part constituted by a reflector and a second part constituted by a light source and a photodetector arranged to receive an image of the light source after reflection at said reflector, one part being rigidly coupled to the television camera assembly and the other part being rigidly coupled to the vehicle, said camera assembly including a camera tube, means for deriving from the photodetector electrical signals representative of the angular components of motion of the television camera assembly relative to the vehicle, and means responsive to said derived electrical signals for offsetting an output image of said camera tube by an amount to compensate for said angular components of motion.
Specification