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Method and device for obtaining information

A technology of attitude information and information sequence, applied in the field of visual positioning, can solve the problem that the global positioning system cannot perform accurate positioning, and achieve the effect of improving positioning accuracy

Active Publication Date: 2021-03-23
BEIJING BAIDU NETCOM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For indoor or occasions where the signal is interfered, the GPS is usually unable to accurately locate

Method used

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  • Method and device for obtaining information
  • Method and device for obtaining information

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Embodiment Construction

[0026] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings.

[0027] It should be noted that, in the case of no conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings and embodiments.

[0028] figure 1 It shows an exemplary system architecture 100 to which the method for obtaining information or the device for obtaining information of the embodiments of the present disclosure can be applied.

[0029] Such as figure 1 As shown, the system architecture 1...

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Abstract

Embodiments of the present disclosure disclose methods and devices for acquiring information. A specific implementation of the method includes: acquiring an image sequence of a specified space and a sequence of spatial state information corresponding to the image sequence, wherein the spatial state information is used to represent the space when the image acquisition device acquires the image sequence according to a specified trajectory in the specified space Gravity information and space angle information; determine the initial feature points of the image in the image sequence through the feature point library, wherein the feature point library contains the spatial three-dimensional feature points of the specified space; calculate the attitude information through the space state information sequence and the initial feature points , the posture information is used to represent the spatial position information and spatial angle information of the image acquisition device when acquiring the above image sequence. This embodiment can acquire the posture information of the image acquisition device in the designated space according to the image sequence, which is beneficial to improve the positioning accuracy of the image acquisition device in the designated space.

Description

technical field [0001] Embodiments of the present disclosure relate to the technical field of visual positioning, and in particular to methods and devices for acquiring information. Background technique [0002] A global positioning system (Global positioning system, GPS) can perform a positioning operation outdoors or in a scene with a better signal. For indoor or occasions where the signal is interfered, the GPS usually cannot perform accurate positioning. Visual positioning service (visual positioning service, VPS) is a technology that uses image acquisition equipment to obtain visual information for positioning. It matches the collected image information with the data in the map database to determine the current observation position. Compared with the current dominant GPS, it does not rely on satellite signals for positioning, and can provide location-based services in situations where GPS cannot work, such as indoor scenes where GPS signals cannot be received. Conte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06T7/73
CPCG06T7/73G06T2207/10016G06V20/30
Inventor 王颢星张永杰李照虎
Owner BEIJING BAIDU NETCOM SCI & TECH CO LTD