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570 results about "Stereo camera" patented technology

A stereo camera is a type of camera with two or more lenses with a separate image sensor or film frame for each lens. This allows the camera to simulate human binocular vision, and therefore gives it the ability to capture three-dimensional images, a process known as stereo photography. Stereo cameras may be used for making stereoviews and 3D pictures for movies, or for range imaging. The distance between the lenses in a typical stereo camera (the intra-axial distance) is about the distance between one's eyes (known as the intra-ocular distance) and is about 6.35 cm, though a longer base line (greater inter-camera distance) produces more extreme 3-dimensionality.

Home-monitoring system

A method and system for securing neighborhoods against crime. In one system, a short range wireless LAN technology, e.g., WiFi or WiMax, is employed to relay sensor information, including that from cameras, in real-time to a security server in a neighbor's house, which can significantly improve response time. The wireless LAN technology allows higher quality video to be captured by the on-site cameras, and relayed off-site in real-time, preserving the integrity of the data even if a burglar or intruder finds and destroys or steals the on-site security equipment. Modern IP monitoring may be employed to offer additional capabilities and reliability in these systems.
Owner:GENERAL INSTR CORP

System and method for 3D photography and/or analysis of 3D images and/or display of 3D images

When 3D viewing means become much more available and common, it will be very sad that the many great movies that exist today will be able to be viewed in 3D only through limited and partial software attempts to recreate the 3D info. Films today are not filmed in 3D due to various problems, and mainly since a normal stereo camera could be very problematic when filming modern films, since for example it does not behave properly when zooming in or out is used, and it can cause many problems when filming for example smaller scale models for some special effects. For example, a larger zoom requires a correspondingly larger distance between the lenses, so that for example if a car is photographed at a zoom factor of 1:10, the correct right-left disparity will be achieved only if the lenses move to an inter-ocular distance of for example 65 cm instead of the normal 6.5 cm. The present invention tries to solve the above problems by using a 3D camera which can automatically adjust in a way that solves the zoom problem, and provides a solution also for filming smaller models. The angle between the two lenses is preferably changed according to the distance and position of the object that is at the center of focus, and changing the zoom affects automatically both the distance between the lenses and their angle, since changing merely the distance without changing the convergence angle would cause the two cameras to see completely different parts of the image. The patent also shows that similar methods can be used for example for a much better stereoscopic telescope with or without a varying zoom factor. In addition, the patent shows various ways to generate efficiently a 3D knowledge of the surrounding space, which can be used also for example in robots for various purposes, and also describes a few possible improvements in 3d viewing.
Owner:MAYER YARON +1

Automatic driving system based on highway

The invention relates to the technical field of automatic driving, in particular to an automatic driving system based on a highway. The automatic driving system comprises a sensor, a positioning module, a man-machine interaction module, an automatic driving controller and a vehicle executing module. A traditional laser radar is replaced with a monocular camera, a stereo camera, a forward-direction long distance millimeter microwave radar and four-corner middle distance millimeter microwave radars which are arranged behind an inside-vehicle rearview mirror, at the center of a vehicle front bumper and on the two sides of the front bumper and a rear front bumper correspondingly. Multiple kinds of information in traffic sign road information and obstruction information are collected separately. The whole automatic driving system of perception fusion, path planning, decision planning, controlling and the like is integrated into an embedded type controller to achieve automatic driving. Compared with a traditional automatic driving system adopting the laser radar, the cost is low, and integration is easy. Perception precision is improved greatly, the system is high in integration level and small in size, the size of the automatic driving system is reduced greatly, the power consumption of the system is lowered, and mass production is easy.
Owner:DONGFENG MOTOR CORP HUBEI

Arrangement for ascertaining function-determining geometric parameters of a joint of a vertebrate

Arrangement for ascertaining function-determining geometric parameters of a joint of a vertebrate, especially a hip or shoulder joint of a human being, in preparation for the installation of a joint replacement implant, especially a hip or shoulder socket or an associated stem implant, by means of an optical coordinate-measuring procedure, having a stereocamera or stereocamera arrangement for the spatial recording of optical transducer signals, a mobile multipoint transducer which is in the form of a movable sensor for sensing bony references in the joint region in order to determine the coordinates thereof, at least one bone-fixed multipoint transducer which is configured for rigid attachment, especially screwed or clamped attachment, (in a region sufficiently distant from the joint) to an extremity originating from the joint, especially close to the proximal end of a femur or a humerus, an interactive sequence controller for controlling the sequential registration and storage of a set of measurement point coordinates supplied by the mobile multipoint transducer and sets of measurement point coordinates recorded in a first plurality of positions of the bone-fixed multipoint transducer in a plurality of rotated positions of the extremity and their subsequent processing in accordance with a previously stored processing sequence, an evaluation unit for evaluating the sets of measurement point coordinates supplied by the multipoint transducers and recorded by the camera arrangement for the purpose of determining the geometric parameters, which comprises means for determining the transversal, vertical and sagittal body axes as well as means for carrying out an iterative procedure, especially an adjustment calculation in accordance with the least squares method, to determine the coordinates of the center of rotation of the joint, and an output unit, which is connected to the sequence controller and to the evaluation unit, for issuing manipulation proposals to an operating surgeon in accordance with the predetermined process sequence and in dependence upon the results of the determination of the geometric parameters, and for displaying the results of the evaluation.
Owner:SMITH & NEPHEW ORTHOPAEDICS

Geodesic Distance Based Primitive Segmentation and Fitting for 3D Modeling of Non-Rigid Objects from 2D Images

A stereo camera system produces a stereo image pair of a cable harness, which is used to define a 3D point cloud of the cable harness at its current pose position. Pose information of specific parts of the cable harness are determined from the 3D point cloud, and the cable harness is then re-presented as a collection of primitive geometric shapes of known dimensions, whose positions and orientations follow the spatial position and orientation of the imaged cable harness. The length, position and number of geometric shapes are atomically determined from a 2D image segmentation of one of the images in the stereo image pair.
Owner:SEIKO EPSON CORP

Calibration method for relative attitude of binocular stereo camera and inertial measurement unit

The invention discloses a simple and feasible calibration method for the relative attitude of a binocular stereo camera and an inertial measurement unit on the basis of the absolute gravity direction. The method comprises the steps that a gravity direction vector serves as a reference vector, expressions of the gravity direction vector under a camera coordinate system and under an IMU coordinate system are solved respectively to obtain the expressions of the same vector under the two different coordinate systems, and then the attitude change relationship between the two coordinate systems can be solved; finally, precision verification is performed through reprojection errors, and application of the calibration method in a visual odometer is supplied. Experiments show that the relative attitude between the camera and the IMU can be accurately solved through the method. The method can be used for assisting in vision positioning of mobile robots and spherical robots.
Owner:BEIJING UNIV OF POSTS & TELECOMM
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