Photogrammetry system and method of operation
a photogrammetry and system technology, applied in the field of photogrammetry system, can solve the problems of reducing processing speed, insufficient data to determine three-dimensional coordinates of at least portions of objects, and insufficient images of users of objects
Active Publication Date: 2019-11-28
FARO TECH INC
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Benefits of technology
The patent text describes a photogrammetry system that can capture and analyze 2D images of objects in order to determine their three-dimensional coordinates. The system includes a 2D camera, a user interface with a display, and a controller. The controller can move the camera to different positions and capture photogrammetry images of the object at different resolutions. The system can also indicate the direction of movement between the positions and determine the 3D coordinates of points on the object based on the photogrammetry images. The technical effect of this invention is to provide a more efficient and accurate method for measuring the 3D coordinates of objects.
Problems solved by technology
One common issue is that users don't acquire enough images of the object and there may be insufficient data to determine three-dimensional coordinates of at least portions of the object.
Another common issue is that a user may acquire too many images resulting in reduced processing speed.
Method used
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[0016]Embodiments of the present disclosure provide for a system and method of acquiring three-dimensional coordinates using photogrammetry. Further embodiments of the present disclosure provide for a system and method of acquiring images for photogrammetry where the user is guided to positions or poses for acquiring images. Further embodiments of the present disclosure provide for a system and method of determining a sequence of images, including position and pose for each image, based on one or more overview images.
[0017]Photogrammetry is a technique for measuring objects using images, such as photographic images acquired by a digital camera for example. Photogrammetry may be based on markers (e.g. lights or reflective stickers) or based on natural features. By acquiring multiple images of an object, or a portion of the object, from different positions or poses, 3D coordinates of points on the object may be determined based on common features or points and information on the posit...
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A photogrammetry system and method is provided. The system includes a two-dimensional (2D) camera operable to acquire a 2D image and a 2D video image. A user interface is provided having a display. A controller having a processor that performs a method for determining locations where photogrammetry images should be acquired and displaying an indicator on the user interface indicating to the operator a direction of movement to acquire the next photogrammetry image.
Description
BACKGROUND[0001]The subject matter disclosed herein relates to a photogrammetry system, and in particular to a photogrammetry system that includes a user guidance arrangement for the acquisition of three-dimensional coordinates.[0002]Photogrammetry is a method of making measurements from two-dimensional (2D) images or photographs. When two or more images are acquired at different positions that have an overlapping field of view, common points or features may be identified on each image. By projecting a ray from the camera location to the feature / point on the object, the three-dimensional (3D) coordinate of the feature / point may be determined using trigonometry.[0003]In order for photogrammetry to be used, the images acquired of the object need to overlap so that common features can be identified. It has been found that the accuracy of the 3D coordinates may be increased when a common feature / point is located in three images acquired at different camera positions or poses. One common...
Claims
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IPC IPC(8): H04N13/122G01B11/00G01S3/786G06T1/00H04N13/275G01S17/48
CPCG01B11/002G01C11/06G06T7/55G06T2200/24G01B11/005G01S3/786G01S17/48G06T1/0007H04N13/122H04N13/275
InventorWOLKE, MATTHIASHEIDEMANN, ROLF
OwnerFARO TECH INC