Method for selecting multiple moving targets based on induced type brain-computer interface

A technology of moving targets and brain-computer interface, applied in the direction of input/output of user/computer interaction, computer components, mechanical mode conversion, etc. Problems such as untimely information update, achieve high target selection accuracy, strong operation friendliness, and simple design

Inactive Publication Date: 2017-11-14
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Facing a dynamic world, the traditional static BCI paradigm provides limited environmental information, and requires users to switch between the interactive interface and the actual scene to complete information interaction and peripheral control. Its flexibility and operation friendliness are greatly limited, affecting users Experience; and the information is not updated in time, which is not conducive to the user's grasp of the global state of the dynamic environment

Method used

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  • Method for selecting multiple moving targets based on induced type brain-computer interface
  • Method for selecting multiple moving targets based on induced type brain-computer interface
  • Method for selecting multiple moving targets based on induced type brain-computer interface

Examples

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Effect test

Embodiment 1

[0035] Such as figure 1 As shown, the steps of the multi-moving target selection method based on the induced brain-computer interface of the present invention include:

[0036] 1) Collect the actual environmental information through the camera, and determine the number and coordinates of the targets in the picture;

[0037] 2) Superimpose and display the visual stimulus of the evoked BCI dynamic paradigm on the moving target;

[0038] 3) While the user is paying attention to the target, use the EEG acquisition device to detect the user's EEG signal, determine the target that the user wants to select, and mark the target to complete the target selection.

[0039] In this embodiment, the multi-moving target selection method based on the inductive brain-computer interface uses the camera to collect the actual environment information, and uses the target detection algorithm and the multi-target tracking algorithm to determine the number and coordinates of the targets in the scree...

Embodiment 2

[0048] This embodiment is basically the same as Embodiment 1, and the main differences are: the induced BCI dynamic paradigm adopted in step 2) is different, and the processing method of step 3) is also different.

[0049] In this embodiment, the detailed steps of step 2) include:

[0050] 2.1B) Before a target selection, first determine the number of targets in the screen at this time and number them, and superimpose the numbers on the corresponding moving targets;

[0051] 2.2B) Set the stimulation frequency according to the number of targets, superimpose the SSVEP visual stimulation on each target number, and the SSVEP visual stimulation of each target number flashes alternately at different frequencies, and the coordinates of the stimulation are updated in real time according to the target detection and tracking results of each frame ; In the process of paying attention to the moving target, the user will be affected by the corresponding frequency visual stimulation superi...

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Abstract

The invention discloses a method for selecting multiple moving targets based on an induced type brain-computer interface. The method comprises the following steps: 1) adopting a camera for collecting practical environmental information and confirming the quantity and coordinates of the targets in a frame; 2) overlapping and displaying visual stimulation in an induced BCI dynamic normal form on the moving targets; and 3) utilizing a computer collecting device to detect an EEG signal of a user while the user focuses on the targets, judging the targets which are expected to be selected by the user and marking the targets, thereby completing the target selection. According to the invention, the induced BCI dynamic normal form is combined with a dynamic scene, so that the user can observe and select the moving targets at the first visual angle, the friendliness of the operation for selecting multiple moving targets can be promoted and the method has the advantages of high universality, simple principle and convenience in operation.

Description

technical field [0001] The invention relates to brain-computer interface technology, in particular to a multi-moving target selection method based on an evoked brain-computer interface. Background technique [0002] Brain computer interface (BCI) is an emerging technology that realizes direct communication between the brain and the outside world without peripheral nerves and muscles. Identify people's intentions, so as to realize the communication and control between the human brain and the outside world. BCI does not require the participation of human body activities or language expressions, and is non-action and non-contact. The original intention of its research is to serve patients with motor neurological diseases. At present, BCI has broad application prospects in the fields of disability assistance, rehabilitation work, weapon equipment research and development, entertainment, etc., and has attracted extensive attention from domestic and foreign researchers. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/01
CPCG06F3/015
Inventor 刘亚东周宗潭刘亚茹胡德文于扬唐景昇
Owner NAT UNIV OF DEFENSE TECH
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