Method and device for acquiring geometric information

Abstract

The invention discloses a method and a device for acquiring geometric information, wherein the method comprises the following steps: determining first / second origin position information for a device comprising a first / second external interface and a first / second positioning module; and according to the first / second origin position information, determining a first / second interface coordinate and afirst / second coordinate system of the first / second external interface and determining the coordinate of the first / second positioning module corresponding to the first / second origin position information; determining the link constraint relation between a main device and a butting device according to the coordinates of a first and a second interfaces; determining the relative location relation between the first coordinate system and a second coordinate system according to the first origin position information, the second origin position information and the link constraint relation; acquiring a third coordinate system and relative position coordinates of the first and the second positioning modules in the third coordinate system according to the relative position relation between the first and the second coordinate systems; and acquiring the geometric information between the first positioning module and the second positioning module according to the relative position coordinates in the third coordinate system.

Description

technical field [0001] The present invention relates to positioning technology, in particular to a method and device for acquiring geometric information. Background technique [0002] Microphone arrays have a wide variety of uses, especially their ability to locate devices. With the consumer electronics of notebook computers, in order to pursue stronger and better recording and playback performance, some manufacturers have begun to consider synthesizing microphone arrays on notebook computers, but considering the size of the current microphones, the standard electret condenser The microphone (ECM) requires a usable bezel height of 3mm to 4mm. But most of today's ultra-thin laptops simply don't have that much room. [0003] Although the concept of virtual microphone array has been proposed, strictly speaking, virtual microphone array is just a very simple and primitive microphone array, because it only provides very simple functions, such as noise reduction, and cannot be u...

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Problems solved by technology

[0004] In the process of realizing the present invention, the inventors found that the key step that the virtual microphone array cannot support device positioning is that the current positioning algorithms all use the triangulation positioning method, that is, use the signal difference between two devices and perform based on the known microphone distance. Device positioning, and currently the devices in the virtual microphone array cannot accurately locate the distance between the microphones

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