Hexagon‘s patented mobile surveying apparatus features an event-based camera with a dynamic vision sensor. It utilizes visual odometry to determine camera poses and target directions by detecting light intensity changes, enabling precise measurements in various surveying applications like laser scanning and total stations. GlobalData’s report on Hexagon gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Hexagon, AI assisted CAD was a key innovation area identified from patents. Hexagon's grant share as of June 2024 was 57%. Grant share is based on the ratio of number of grants to total number of patents.
Mobile surveying apparatus with event-based camera technology
The patent US12025439B2 describes a mobile surveying apparatus that integrates advanced imaging technology with visual odometry functionality. This apparatus includes at least one camera module equipped with a dynamic vision sensor capable of detecting changes in light intensity at a rate of at least 1 kHz. The system utilizes a stored algorithm to evaluate a series of images captured during the movement of the apparatus, allowing for the determination of camera poses in relation to the measurement environment. The apparatus can function as various types of surveying equipment, such as a laser scanner or total station, and features a beam directing unit for emitting and receiving measurement radiation, a fine distance measuring unit, and angle measuring capabilities to ascertain target positions based on distance and orientation.
Additionally, the patent outlines several functionalities of the mobile surveying apparatus, including the ability to record images and detect events simultaneously, employing algorithms based on SLAM (Simultaneous Localization and Mapping) or SfM (Structure from Motion) techniques. The system can perform bundle adjustments and track image features using detected events, enhancing the accuracy of the camera pose determination. The apparatus is also capable of generating 3D point clouds from overlapping segments of the measurement environment and registering these point clouds based on determined camera poses. Furthermore, the patent mentions the potential integration of additional sensors, such as thermal image sensors or inertial measurement units, to further refine the determination of camera poses and improve the overall surveying process. A computer program product containing the necessary code for the apparatus is also included in the claims.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
