A motion trajectory comparison method based on mobile devices
A technology of mobile devices and motion trajectories, applied in navigation calculation tools and other directions, can solve problems such as insignificant effects and large motion trajectory errors
Inactive Publication Date: 2017-10-31
YUNNAN UNIV
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Problems solved by technology
Due to the implementation of the sensor, the design accuracy and random noise problems, the reconstructed trajectory has a large error with the trajectory of the real action. Although filtering and correction algorithms can be used to correct the sampled data, the effect is not obvious
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[0032] The present invention is based on the motion trajectory comparison method of mobile devices, the main purpose of which is not to restore the motion trajectory of an action in three-dimensional space, but to compare two motion trajectories, and then judge the similarity of the two motion trajectories. One of the two motion trajectories is called the standard motion trajectory, and the other is called the comparison motion trajectory, which is the user imitation trajectory
[0033] figure 1 It is a flow chart of the mobile device-based motion trajectory comparison method of the present invention. Each step in the process is described below.
[0034] Step 1. Acquisition of motion trajectory data.
[0035] 1), the first thing to be solved is the difference in data collection caused by different sensor implementations and design accuracy. For example, different mobile devices are used to collect data on the same trajectory. Since different mobile devices use different sens...
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The invention discloses a motion track contrasting method based on a mobile device. The method comprises the following steps: sampling is carried out on simple actions by sensors on the mobile device simultaneously for n times, and an average value and a standard difference of n sensor data of one sensor at one moment are computed and used as a sensor data standardization range of the corresponding sensor at the moment; when a user simulates a standard motion track, sensor data collected by each sensor on the mobile device at each moment is respectively contrasted with the corresponding sensor, and the sensor data standardization range at the corresponding moment, whether the sensor data is in the standardization ranges or not is judged, and thus motion track contrasting is realized. According to the invention, a traditional motion track recovery method is not implemented to contrast the motion track, and sensor data output by all sensors is collected directly for analysis and contrast, so that various errors in the recovery process are avoided, and accuracy of motion track contrasting is improved. Meanwhile, standardization of the standard motion track is completed through sampling for multiple times, so that description of the standard motion track is more accurate.
Description
technical field [0001] The invention belongs to the technical field of motion track processing, and more specifically, relates to a method for comparing motion tracks based on mobile devices. Background technique [0002] The comparison of motion trajectory refers to comparing the imitated motion trajectory with the standard motion trajectory, and giving information on the degree of difference between the two, which mainly includes motion trajectory data collection, standardization, storage, and simulated motion trajectory. Several aspects of the comparison of standardized motion trajectories. [0003] The current mainstream motion trajectory data acquisition methods mainly include sensor-based spatial positioning, magnetic space tracking, laser tracking, and computer vision positioning systems. [0004] The sensor space positioning mainly collects and analyzes the data of the acceleration sensor and the gyroscope, and uses the principles of physics to collect the movement ...
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IPC IPC(8): G01C21/20
CPCG01C21/20
Inventor 张骥先张学杰岳昆曾小玻杨旭涛
Owner YUNNAN UNIV