Particle through-wall detection method and device and electronic device
A particle and wall-penetrating technology, applied in image data processing, instrumentation, calculation, etc., can solve problems such as large amount of calculation, and achieve the effect of improving real-time performance and reducing the amount of calculation.
Inactive Publication Date: 2018-04-10
BEIJING UNIV OF POSTS & TELECOMM
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It can be seen that for the particle to be detected, it is necessary to judge whether it intersects with each wall line segment, and then judge whether the particle passes through the wall, so that the calculation of the particle passing through the wall detection process is relatively large
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[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0048] An embodiment of the present invention provides a method for detecting particles passing through a wall, such as figure 1 shown, including:
[0049] S101. Determine a first coordinate point in the map where the particle is located before moving and a second coordinate point in the map where the particle is located after moving.
[0050] The particle penetration detection method provided by the embodiments of the present invention can be applied to elec...
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An embodiment of the invention provides a particle through-wall detection method and device and an electronic device. The method comprises the following steps: determining a first coordinate point ofa particle in a map before moving and a second coordinate point of the particle in the map after moving; according to a coordinate value of the first coordinate point and a preset formula, determininga first grid of the first coordinate point in a pre-generated grid matrix; according to a coordinate value of the second coordinate point and the preset formula, determining a second grid of the second coordinate point in the pre-generated grid matrix; and judging whether the particle passes through a wall by judging whether a connection line between the first grid and the second grid passes through a wall segment grid in the grid matrix, wherein the wall segment grid is a pre-marked grid in the grid matrix. The particle through-wall detection method and device and the electronic device can reduce calculating amount of the particle through-wall detection process.
Description
technical field [0001] The invention relates to the field of positioning technology, in particular to a method, device and electronic equipment for detecting particles passing through a wall. Background technique [0002] With the rapid development of today's social economy, there are more and more high-rise buildings and large supermarkets in the city, and LBS (Location Based Services, location service) plays an increasingly important role in people's daily life. In order to improve the accuracy of indoor positioning, indoor map matching technology has been gradually developed. Particle filter method is a commonly used method in indoor map matching technology, and particle penetration detection is an important process in particle filter method. [0003] In the existing particle penetration detection method, it is judged whether the line segment composed of the positioning points before and after the movement of the particle to be detected intersects with each wall line seg...
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IPC IPC(8): G06T7/70
Inventor 邓中亮张书楠苏洋付潇王翰华刘雯李晶邢华帅姚喆冷泽富
Owner BEIJING UNIV OF POSTS & TELECOMM