摘要:
The invention relates to a method for producing a depth map from a detection region (1) of the earth's surface, in which detection region (1) an underground pipeline (2) is arranged, comprising the following method steps: recording at least one image sequence by means of at least one camera (3); determining the position and orientation of the camera corresponding to each individual recording; determining a spatial position and orientation (4) of the underground pipeline (2) arranged in the detection region (1); producing the depth map of the detection region (1) by means of a plane sweep method on the basis of the individual recordings and the associated camera positions; wherein the maximum depth region (5) of the plane sweep method is subdivided into a total of N sections (i) in an adaptive manner, namely according to a predetermined minimum layer thickness (T) for the ground covering the underground pipeline (2), by means of a predetermined number of planes (6) which are spaced differently from one another and extend parallel with respect to one another, whereby a predetermined section height (D i ) is associated with each of the individual N sections (i), and wherein the orientation of the planes (6) extends parallel to the orientation (4) of the underground pipeline (2).
摘要:
A laser projection system for projecting an image on a workpiece includes a photogrammetry assembly and a laser projector, each communicating with a computer. The photogrammetry assembly includes a first camera for scanning the workpiece, and the laser projector projects a laser image to arbitrary locations. Light is conveyed from the direction of the workpiece to the photogrammetry assembly. The photogrammetry assembly signals the coordinates light conveyed toward the photogrammetry assembly to the computer with the computer being programmable for determining a geometric location of the laser image. The computer establishes a geometric correlation between the photogrammetry assembly, the laser projector, and the workpiece for realigning the laser image to a corrected geometric location relative to the workpiece.
摘要:
In one embodiment, a method for optimizing a set of matched features is provided. The method includes matching features between an optical image and a geo-referenced orthoimage to produce an initial set of matched features. An initial position solution is then determined for the optical image using the initial set of N matched features. The initial set of N matched features are then optimized based on a set of N sub-solutions and the initial position solution, wherein each of the N sub-solutions is a position solution using a different set of (N-1) matched features. A refined position solution is then calculated for the optical image using the optimized set of matched features.
摘要:
A motion sensor device according to an embodiment of the present disclosure includes: an image sensor (701); first and second light sources (702, 703); and a controller (710) configured to control the image sensor (701) and the first and second light sources (702, 703). The controller (710) makes the image sensor capture a first frame with light emitted from the first light source at a first time, makes the image sensor capture a second frame with light emitted from the second light source at a second time, performs masking processing on a first image gotten by capturing the first frame and on a second image gotten by capturing the second frame based on a difference between the first and second images, and obtain information about the distance to an object shot in the first and second images based on the first and second images that have been subjected to the masking processing.
摘要:
Feeler device for photogrammetric measurements, comprising a main body for holding it; a tip connected to the main body and adapted to come in contact with the external surface of an object to be measured; a plurality of spokes adapted to support respective spherical markers internally lit by respective light sources.
摘要:
A method for detecting a displacement of a mobile platform includes obtaining a first frame and a second frame using an imaging device associated with the mobile platform and determining the displacement of the mobile platform based upon the first frame and the second frame.
摘要:
A Method for generating scaled terrain information while operating a bulldozer (1), the bulldozer (1) comprising a driving unit comprising a set of drive wheels (5), particularly being part of a continuous track (6), and a motor connected to at least one of the drive wheels (5) for providing movability of the bulldozer (1), a blade (4) for altering the surface of the terrain (10,10'), at least one camera (2,2',2",2"') for capturing images of the environment, particularly of the terrain (10,10'), the camera (2,2',2" ,2" ') being positioned and aligned in a known manner relative to the bulldozer (1), and a controlling and processing unit (3), wherein the method comprises: moving the bulldozer (1) in the terrain (10,10') whilst concurrently generating a set of image data by capturing an image series of terrain sections with the at least one camera so that at least two images, particularly successive images, of the image series cover an amount of identical points in the terrain (10,10'), wherein the terrain sections are defined by a viewing field (7,7',7",7"') of the at least one camera (2,2',2" ,2" ') at respective positions of the camera (2,2',2" ,2" ') while moving, and either applying a simultaneous localisation and mapping (SLAM) algorithm or a stereo photogrammetry algorithm to the set of image data and thereby deriving terrain data, the terrain data comprising a point cloud representing the captured terrain (10,10') and position data relating to a relative position of the bulldozer (1) in the terrain (10,10'), and scaling the point cloud by applying an absolute scale information to the terrain data, particularly scaling the position data.
摘要:
In one embodiment, a method for optimizing a set of matched features is provided. The method includes matching features between an optical image and a geo-referenced orthoimage to produce an initial set of matched features. An initial position solution is then determined for the optical image using the initial set of N matched features. The initial set of N matched features are then optimized based on a set of N sub-solutions and the initial position solution, wherein each of the N sub-solutions is a position solution using a different set of (N-1) matched features. A refined position solution is then calculated for the optical image using the optimized set of matched features.