In the vision 3-D measurement field, camera calibration results directly affect the accuracy of measurement. So camera calibration method is hot spot in this field. This paper proposes a new efficient calibration method with binocular camera. First, the method uses an accurate extraction algorithm to extract the ellipse center of calibration target image. Second, the paper presents a automatic ...

The new generation of industrial robots will have more flexibility in task implementation thanks to the advances in developing highly modular and reconfigurable manipulators. To achieve the full flexibility of such robots, in addition to the mechanical flexibility, it is necessary to achieve the flexibility in control. Precise automatic calibration of these manipulators is essential preconditio...

We present a complete system for automatic alignment and calibration of a stereo pan-tilt camera platform on a mobile robot. The system uses visual data from one or two controlled rotations of the head, and a single forward motion of the robot. We show how the images alone provide head alignment information, camera calibration, and head geometry. We also discuss automatic zeroing of steering an...

Determining camera calibration parameters is an essential step in most computer vision endeavors; it is a time-consuming task despite the availability of calibration algorithms and software. A set of point correspondences between points on the calibration target and the camera image(s) must be found, usually a manual or manually guided process. Two commonly used calibration tools are implementa...

Automatic camera calibration via self-calibration with the aid of coded targets is now very much the norm in closerange photogrammetry. This is irrespective of whether the cameras to be calibrated are high-end metric, or the digital SLRs and consumer-grade models that are increasingly being employed for image-based 3D measurement. Automation has greatly simplified the calibration task, but ther...