Abstract:
The present invention relates to a method and arrangement for developing a 3D model of an environment. The method comprises steps of providing a plurality of overlapping images of the environment, each image associated of navigation data, providing distance information, said LIDAR information comprising a distance value and navigation data from a plurality of distance measurements, and developing the 3D model based on the plurality of overlapping images and the distance information. The step of developing the 3D model comprises the steps of providing the 3D model based on the plurality of overlapping images; and updating the 3D model with the distance information using an iterative process.
Abstract:
The present invention relates to a method (700) and system for geo-referencing at least one sensor image. The method comprises the steps of -generating (701 )said at least one sensor image of a first scene with at least one sensor, -accessing (702) a 3D model of the environment comprising geo-coded 3D coordinate data and related to at least one second scene, said second scene encompassing said first scene, -matching (703) the sensor image with the 3D model find a section of the 3D model where there is a match between the first and the second scenes, -geo-referencing (704 )the sensor image based on the geo-coded 3D coordinate data of the found section of the 3D model, and -determining (705) a measure related to an uncertainty in the matching between the sensor image and the 3D model.
Abstract:
The present invention relates to a system (200) and method for determining a relation between a first scene and a second scene. The method comprises the steps of generating at least one sensor image of a first scene with at least one sensor; accessing information related to at least one second scene, said second scene encompassing said first scene, and matching the sensor image with the second scene to map the sensor image onto the second scene. The step of accessing information related to the at least one second scene comprises accessing a 3D map comprising geocoded 3D coordinate data. The mapping involves associating geocoding information to a plurality of positions in the sensor image based on the coordinate data of the second scene.
Abstract:
The present invention relates to an automated three dimensional mapping method estimating tree dimensional models taking advantage of a plurality of images. The object of the invention is to eliminate or at least reduce the need of smoothing and as a consequence increase the stability of a 3D model avoiding blur. According to the method the positions (x, y, z) and attitudes (α, β, γ) for at least one camera is recorded when images are taken, the at least one camera is geometrically calibrated to indicate the direction of each pixel of an image, a stereo disparity is calculated (42) for a plurality of image pairs covering a same scene position setting a disparity and a certainty measure estimate for each stereo disparity, the different stereo disparity estimates are weighted together (43) to form a 3D model, and the stereo disparity estimates are reweighted automatically and adaptively based on the estimated 3D model.
Abstract:
The invention relates to image-based movement tracking of a number of objects in a particular area. A number of image registration means repeatedly records data pertaining to multiple simultaneous representations of events occurring within the area. Specifically, at least one stereo-pair of cameras (101a, 101b) repeatedly record stereo-image data (D1', D1") based upon which a data processing unit ( 110) repeatedly determines a respective position for each of the objects. According to the invention, a first camera (101a) and a second camera (101b) in the stereo-pair are separated by a base distance. Moreover, the cameras (101a, 101b) are essentially parallel and directed towards the area, such that a first image plane of the first camera (101a) registers a portion of the area, which substantially overlaps a portion of the area registered by a second image plane of the second camera (101b).
Abstract:
The invention relates to a method for analysing images generated from at least one imaging system on at least one satellite. The method comprises providing at least three images of an area of interest from the at least one imaging system, where the at least three provided images are provided from at least three different angles,establishing point correspondence between the at least three provided images,generating at least two sets of three-dimensional information based on the at least three provided images, wherein the at least two sets of three-dimensional information are generated based on at least two different combinations of at least two of the at least three provided images of the area of interest,and comparing the at least two sets of three-dimensional information so as to determine discrepancies and providing information related to the imaging system and/or errors in the images based on the determined discrepancies. The invention also relates to a method for image correction, a system, a computer program and a computer program product.
Abstract:
The present invention relates to a three dimensional model method based on combination of ground based images (54) and images (44) taken from above. According to the invention an existing 3D model (46) based on images (44) taken from above is matched with images (54) taken from ground level, all images comprising information about position and attitudes of the camera when the images (54) from ground level and the images (44) taken from above were taken and direction of each pixel. The method offers an automatically carried out imaging solving or at least mitigating occlusion problems.
Abstract:
The present invention relates to a system (100) and method for mixing a scene with a virtual scenario. The system comprises image capturing means arranged to capture at least one image so as to cover the scene from a first viewpoint, and an image representation generation unit arranged to generate at least one image representation based on said captured image. The system comprises further a game engine unit (140) arranged to generate a virtual scenario, an image processing unit (150) arranged to adapt the at least one image representation based on said generated virtual scenario so as to provide a virtual video sequence.
Abstract:
The present invention relates to a method for estimating values for a set of parameters of an imaging system 1. The method comprises taking at least two pictures with the imaging system (1), where the at least two pictures are taken from different positions and where the at least two pictures comprise an at least partially overlapping area. It also comprises sending out pulses to the at least partially overlapping area, and detecting the reflected pulses and calculating distances between a sender of the pulses and the respective point where the pulses were reflected based on the travel time of the pulses. Further, the method comprises associating positioning data to the pictures and to the calculated distance between the points where the pulses were reflected and the sender of the pulses. Said positioning data comprises a position and pointing direction of the imagining system 1 and the sender of the pulses. The method comprises calculating first information about the area, based on the at least two pictures, the information comprising at least one quantity of the area, the at least one quantity comprising size and/or position,and calculating second information related to the calculated distances to the at least partly overlapping area, the second information comprising at least one quantity of the area, the at least one quantity comprising size and/or position. The method also comprises comparing values for the quantities contained in the first and second information,and, if the value for at least one quantity of the area obtained from the first information differs from the value for the corresponding at least one quantity of the area obtained from the second information, calculating values and/or an error estimate for the set of parameters of the imaging system 1 based on the difference.
Abstract:
The present invention relates to a method (600) and an arrangement for providing a 3D model of an environment. The method comprises the step of forming (610) a mesh modelling the environment in three dimensions, said mesh comprising nodes interconnected by edges and having surfaces boarded by the edges, wherein each node is associated to a 3D coordinate in a geographical coordinate system, determining (620) for a plurality of the nodes and/or surfaces and/or edges in the mesh a mesh uncertainty and associating (630) the determined mesh uncertainty to the corresponding node and/or surface and/or edge.