CN103519788A - Attention scenario evaluation system based on Kinect interaction - Google Patents
Attention scenario evaluation system based on Kinect interaction Download PDFInfo
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Abstract
The invention discloses an attention scenario evaluation system based on Kinect interaction. The system comprises the implementation steps of (1) utilizing the multimedia analogue simulation technology for presenting a scenario similar to real life, introducing a lifelization interaction scenario into a test system, (2) utilizing a Kinect camera for conducting dynamic capture on a user, converting user information into a skeleton tracking system through image recognition, drawing a human skeleton which is placed into the scenario in the first step, (3) tracking motions of the user through changes of positions of articulation points of the human skeleton, adding event monitoring at the same time, constantly drawing new skeletons in the scenario, (4) achieving communication between hardware and designed scenario application programs through the AIR Kinect middleware, and (5) completing items in the Kinect interaction mode by the user, wherein the system evaluates the situation that the user completes the items by comparing the motions with standard motions. According to the attention scenario evaluation system based on the Kinect interaction, testing is completed in the Kinect interaction mode, attention of the detected user under the real-world situation can be reflected, and assistance by professionals is not required.
Description
Technical field
The present invention relates to a kind of system that adopts sight method to test and assess to attention, relate in particular to a kind ofly based on Kinect body sense technology, realize the test and appraisal of attention by the most natural man-machine interaction mode, can be used for child attention test and appraisal and provide medical assistance and foundation for attention deficit disease.
Background technology
Attention deficit hyperactivity disorder is children and youth commonly encountered diseases in period.According to investigation, China in school age population this disease sickness rate up to 5.83%.And due to factors such as environment, education, sickness rate is the trend increasing year by year.Therefore to child attention, measurement accomplishes that prevention becomes an important problem ahead of time in time.
At present, to measure conventional method be a paper performance test method, software test method and bio signal feedback transmitter to attention.A paper performance test method is that the situation that completes test question by measured is tested and assessed, commonly CPT continuously operating test, and its standardization level is high and have more objectivity.But it needs measured to possess certain cognitive competence and judgement, and test environment is oppressive, and measured is because the causes such as anxiety can affect test effect to a certain extent.And current software test is mostly just by the content computerization of paper pen test, do not do too much going deep into.Bio signal feedback transmitter, if EEG EEG signals and event related potential method etc. is from neuroanatomical angle test and appraisal attention, has more substantivity and objectivity.But biofeed back instrument is more expensive and need professional and technical personnel, and the manpower and materials that expend are larger.
Summary of the invention
In order to overcome the above problems, the invention provides a kind of based on the mutual sight method of testing of Kinect body sense.The method allows measured in being similar to the test environment of life situation, by the most natural interactive mode---and by health, be that controllable interactive mode completes dependence test project, more can reflect tested attention situation under real environment; The present invention does not require measured's know-how and assisting without professional and technical personnel.
The concrete scheme that the present invention adopts is as follows:
The first step: utilize multimedia simulation analogue technique to present the sight that is similar to actual life, the mutual sight of life-stylize is introduced to test macro;
Second step: utilize Kinect photographic head to carry out motion capture to user, take nearest algorithm to obtain tested user's image and depth information; By image identification, user profile is transformed into skeleton tracing system, draw human skeleton, and be placed in the sight of the first step;
The 3rd step: the action of the variation track user by articulare position in human skeleton, draw human skeleton, and interpolation event simultaneously intercepts, constantly in scene, draw new skeleton;
The 4th step: by the sight interapplication communications of AIR Kinect Middleware implementation hardware and design, constantly user's change in location parameter is passed in the role of application program and operation and gone, contrast action model, completes evaluation and test;
The 5th step: user completes test and appraisal project with body sense interactive mode, mark be submitted to background data base table with test results obtains testing and assessing.
Described test and appraisal project is divided into four sub-projects: attention range test event, attention stability test project, Automobile driving test event, attention diversion test event.
The present invention has following beneficial effect:
1, traditional test can bring the sensation of nervous anxiety to measured, can affect the validity of test.Native system is tested measured in the mutual sight of life-stylize, and environment is light, can make their body and mind relaxing, participates in energetically wherein, can improve the validity of test.
2, for the shortcoming of interactive mode dullness in current computer test method, the body sense interactive mode that native system adopts, gets final product control item object by health and carries out, in conjunction with the test environment of sight, make user on the spot in person, more can reflect the attention situation of user in real-life.The most natural this interactive mode frees measured from traditional paper pen and mouse-keyboard are mutual, has transferred the participation of whole body sense organ and limbs, more can reflect the attention level of measured in real-life, also has more ecological validity simultaneously.
3, the sightization test and appraisal project of native system design does not limit subjects's cognitive competence and know-how, and adaptation population is wider.
4, adopt Kinect technology and the combination of web technology, native system possesses the advantage of computer software testing automation and networking, and does not need professional and technical personnel, uses manpower and material resources sparingly, and can be accepted by population.
Accompanying drawing explanation
Fig. 1 is evaluation system flow chart of the present invention;
Fig. 2 is that data base of the present invention forms schematic diagram;
Fig. 3 is stability sub-project instance graph;
Fig. 4 is distributivity sub-project instance graph;
Fig. 5 shifts sub-project instance graph;
Fig. 6 is ANE and interapplication communications schematic diagram;
Fig. 7 is the Kinect particular flow sheet of communicating by letter with stability sub-project.
The specific embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention will be described in detail.
System of the present invention is comprised of computer, stereo set and Kinect photographic head.User logs in by inputting relevant personal information, enters each sub-project and tests and assesses, last submission system output evaluating result.Whole evaluation system flow chart as shown in Figure 1.
Each test and appraisal project of the present invention is in certain situation, by tested situation of finishing the work, evaluate and test tested attention level, so mainly introduce specific design and the realization based on the mutual computer situationization test and appraisal project of Kinect body sense from design and realization, the design of test environment and these aspects of A+E of realization and last test result of test assignment below, the stability test and appraisal project of take is example.
The design of step 1, Test of attention task and realization.
Task design should be in conjunction with the feature of test and appraisal object.System object is child, know-how and speech level are limited, in the development of thinking, be still concrete image thinking and account for critical role, thus those specifically lively, visual in image things more easily cause their attention, and it notices that development has significant emotion color.Therefore these test and appraisal project is introduced test by living scene, thereby simulating reality life activity is transferred tested enthusiasm, guarantees the effectiveness of test.The test event of attention stability of take is below example:
The stability of attention refers to attention and can remain on the long period on certain object, is attention feature in time.This project is measured measured's attention stability by pointing the activity of top football in simulation of real scenes, football and wooden stick are as stimulus object, and instantiation figure is shown in Fig. 3 (all the other project example figure are shown in Fig. 4, Fig. 5).Measured only need, in the face of Kinect photographic head is as keeping the attention of height under normal condition, withstands virtual wooden stick and football with finger, and adjust by movement the balance that position guarantees ball.In this process Zhong， club, following that hand moves and left and right skew, measured need to as much as possible keep hand position and football position on same vertical line.But the side-play amount of ball is not equal to hand position side-play amount, ball side-play amount adds a random value on hand position side-play amount basis, and namely ball and hand can be in unbalanced state always.Therefore whole test process is tested need to keep good stability of attention, can not occur attention free state, otherwise when football and hand generation angle, if adjusted not in time, ball can fall down.
The state contrary with attention stability is the dispersion of noting, the reason of attention dispersion is mainly the interference of indifferent stimulus, the long term of dull mechanical stimulus.For Guarantee item difficulty, in test process, add sound interference to stimulate, the random interfering signals such as " ball falls down ", " bad ", " left side ", " the right " that occur, measured need to get rid of these and disturb stimulation, keep the stability of attention, just can adhere to more of a specified duration.
Test and appraisal have the test and appraisal rule of oneself, code of points etc., and these test and appraisal are test and appraisal exercise questions of operability, so test and appraisal relate to test and appraisal rule and code of points.This sub-project test and appraisal rule is that total time of adhering to heading a ball in 10 minutes is longer, and the highest duration is larger, and score is just higher.Due to evaluating result be subject to total time duration and two conditions of maximum duration affect, so above two conditions are considered in the calculating of last test and appraisal mark, adopt following method:
Project score=100 * total duration/stipulated time+100 * maximum duration/stipulated time
For example, if one tested regulation 10 minutes in to adhering to that total duration is 7 minutes, maximum duration is 2 minutes, score is exactly 90 minutes so.
The design of step 2, sight test environment and realization.
Sight test, the earliest for psychometry, is arranged a kind of situation in advance, and tested behavior performance in this sight is observed in main examination, thereby judges its personality.This method of testing true nature, but performance difficulty, and be subjectivity evaluation.Therefore we adopt multimedia simulation real life scenario, and by the computerization of sight assessment method, sight setting can be abundantlyer convenient to testing simultaneously like this, and it is objective to evaluate.Because traditional interactive mode is tested, be limited in paper pen or mouse and keyboard simultaneously, in order to realize to the full extent simulation real life scenario, the present invention takes the most natural interactive mode---and body sense interactive mode completes test event, accomplishes real computer sight.
Tester of the present invention mainly designs test environment from scene and interactive mode, and a test environment that has more sense of reality, feeling of immersion is provided.Research according to psychology to attention, designs pointed sight test event from range, stability, distributivity, the transfer four dimensions of attention.
A. Scenario Design
1. picture
In the Scenes Creating of test and appraisal project, whole picture should be that main body is outstanding, and orderliness is clear, is convenient to read, and tone is lucid and lively, can be noticeable, thus give tester's good opinion, increase the acceptance of their heart.The key frame of stability project is graminaceous football pitch scene, for making football main body outstanding, has designed spotlight on court, focuses on center, makes the tested energy very first time be concerned about football and personage's main body.
2. sound
Sound can heighten atmosphere, builds a situation true to nature.Carefree music, can build a kind of comfortable atmosphere to tester.According to the difference of project, the music of giving is also different.Stability project is given is music easily, also bears the role of interference source simultaneously in test process.
3. animation
The design of animation is particularly important, and it is conducive to more real rediscover sight, promotes tested better finished item.Take stability project as example, design be in football pitch with the activity of finger jack rafter rod and football, the movement of football and wooden stick is the animation of the poised state of employing functional simulation football under gravity state.Following formula is to calculate football according to pointing the angle formula of rotation and the value of the side-play amount that football moves with finger.
θ=arctan((y
1-y
2)/(x
1-x
2))
x′
2=x
2-(mx+random-0.5*0.1)
y′
2=y
2-my
(S represents wooden stick length; (mx, my) is the mobile side-play amount of football;
it is football rotation angle;
X
1, y
1the coordinate that represents staff; x
2, y
2expression is the coordinate of football, x '
2, y '
2for the spherical coordinates after movement)
B. body sense interactive mode realizes
For making tested can more naturally carrying out alternately with computer, the present invention adopts the mutual mode of body sense, and completes by Kinect photographic head.Kinect can communicate obtaining tested RGB data and depth data and application program, thereby makes the user can be directly and application program interactive.
The present invention adopts handling strong Kinect Flash mode development, by the combination of AIR Kinect Middleware implementation hardware and scene.AIR Kinect middleware is the machine expanding packet (ANE), allow you that local class libraries and ActionScript are carried out to combinations of pairs, the language of the AS3.0 version of Flash can directly call Kinect under Windows environment and drives the function that has compiled packaged dll file the inside in bag to use Kinect photographic head (with reference to Fig. 6).The nativeExtensions.air.kinect that the local expanded function of Adobe AIR (AIR Native Extensions) is quoted ANE middleware in AIR application program wraps the connection status of obtaining Kinect, quote air.kinect.data bag, by access User class, obtain user distance and ID, access SkeletonJoint class wherein, obtain skeleton ID, the data such as skeleton Name & Location.
As follows with reference to Fig. 7 specific implementation process:
(1) check whether Kinect successfully starts and exact connect ion.
(2) when the tested Kinect test specification that enters, Kinect will detect position of human body home position parameter.Native system takes user that the minimum algorithm of distance selects the most close equipment as inputting and following the tracks of, and gets rid of the interference that many people are strayed into scope.
(3) according to skeleton, follow the trail of the data of returning, draw human skeleton.By event, intercept, when tested, when mobile, Kinect can follow the tracks of human body, and draws new skeleton in continuous scape on the scene.Simultaneously in the automatic generating virtual wooden stick of tested finger tip and fantasy football (illustrating in Scenario Design).
(4), after tracking the dynamic position of articulare, will enter to catch user action according to change in location.Such as the movement of user's hands or the posture at other positions etc.By communicating by letter of AIR Kinect Middleware implementation hardware and application program, these actions are corresponded in the role of application program and operation and gone.
The A+E of step 3, test result.
The letter validity check of the project of A. testing and assessing
This project is surveyed by examination and is adopted software analysis to draw, internal consistency reliability is 0.814, and the reliability of provable project is good, in Table 1.
This project, when designing, is classified as 4 dimensions according to theory analysis and existing attention test and appraisal project by all test and appraisal projects, is respectively stability, range, distributivity and transitivity, guarantees that whole test has higher content validity; Utilize factor analysis to analyze test result, the statistical framework obtaining by analysis and the dimension in when design compare the construction validity of analytical test simultaneously.Before carrying out factorial analysis, first adopting KMO(Kaiser-Meyer-Olkin) whether method is applicable to carrying out factorial analysis to original variable checks for check and Charles Bartlett sphericity test (Bartlett Test of Sphericity), and analysis result is in Table 2.Result shows that KMO value is 0.806, in good scope; And the sig value of Bartlett sphericity test is 0.000, illustrate that the correlation coefficient of projects is remarkable.By above statistical analysis, can show that this project is applicable to doing factorial analysis.When carrying out factorial analysis, adopt PCA to extract common factor, adopt the maximum factor rotation method of variance to show that factor loading matrix is as table 3.When the test and appraisal content that 4 factors that factorial analysis obtains embody is worked out with test and appraisal project, be consistent with the four dimensions of attention test and appraisal, illustrate that this project has good construction validity.
The evaluation of B, evaluating result
User completes after test and appraisal, and system can be followed the data feedback evaluating result according to data base.These test and appraisal belong to standardized test, and if system total points 400 minutes is tested and assessed to such an extent that be divided into 320-400 interval tested, and attention level of aggregation is outstanding; In 240-320 interval, be good, interval for having much room for improvement at 0-240.Feedback module presents tested each concrete mark and total points, testedly can find out each dimension and comparisons other dimensions, and and the ratio of total points, thereby can find out ownly in which dimension, go back Shortcomings.
Native system adopts the test event of the mutual mode of Kinect body sense and design sight, and user's experience effect is better, more can reflect the attention level of user under real environment.Applicable crowd is wider for native system.Can be used for general household children Test of attention, and follow the tracks of at any time the state of development of attention level; Also the auxiliary treatment that can be used for general attention power defect.
Provide three tables of data that relate in the concrete enforcement of native system below:
Table 1 reliability statistics scale
The check table of table 2KMO and Bartlett
Each composition loadmeter of table 3
Claims (2)
1. based on the mutual attention sight evaluation system of Kinect body sense, comprise the steps:
The first step: utilize multimedia simulation analogue technique to present the sight that is similar to actual life, the mutual sight of life-stylize is introduced to test macro;
Second step: utilize Kinect photographic head to carry out motion capture to user, take nearest algorithm to obtain tested user's image and depth information; By image identification, user profile is transformed into skeleton tracing system, draw human skeleton, and be placed in the sight of the first step;
The 3rd step: the action of the variation track user by articulare position in human skeleton, draw human skeleton, and interpolation event simultaneously intercepts, constantly in scene, draw new skeleton;
The 4th step: by the sight interapplication communications of AIR Kinect Middleware implementation hardware and design, constantly user's change in location parameter is passed in the role of application program and operation and gone, contrast action model, completes evaluation and test;
The 5th step: user completes test and appraisal project with body sense interactive mode, mark be submitted to background data base table with test results obtains testing and assessing.
2. according to claim 1 based on the mutual attention sight evaluation system of Kinect body sense, it is characterized in that, described test and appraisal project is divided into four sub-projects: attention range test event, attention stability test project, Automobile driving test event, attention diversion test event.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103885585B (en) * | 2014-02-20 | 2017-01-25 | 深圳市贝特尔机电有限公司 | Robot manual navigation method based on single-person gestures and voice information |
| CN106691441A (en) * | 2016-12-22 | 2017-05-24 | 蓝色传感（北京）科技有限公司 | Attention training system based on brain electricity and movement state feedback and method thereof |
| CN106821314A (en) * | 2017-01-18 | 2017-06-13 | 中国人民解放军第三军医大学 | A kind of brain cognition interaction detection system based on hypoxic plateau environment |
| CN107193385A (en) * | 2017-06-29 | 2017-09-22 | 云南大学 | It is a kind of based on methods of the Kinect to keyboard Behavior modeling |
| CN107219888A (en) * | 2017-05-23 | 2017-09-29 | 北京中达金桥技术股份有限公司 | Indoor expansible interactive walkthrough realization method and system based on Kinect |
| CN107273831A (en) * | 2017-06-05 | 2017-10-20 | 苏州大学 | A kind of Three-dimensional target recognition method based on spherical space |
| CN108937965A (en) * | 2018-05-03 | 2018-12-07 | 华东师范大学 | A kind of attention evaluation system and method based on sitting posture analysis |
| CN109376720A (en) * | 2018-12-19 | 2019-02-22 | 杭州电子科技大学 | Classification of motion method based on artis space-time simple cycle network and attention mechanism |
| CN109727659A (en) * | 2018-12-28 | 2019-05-07 | 中国科学院心理研究所 | Habituation adjuvant treatment technology platform and application method based on virtual reality |
| CN110162163A (en) * | 2018-03-08 | 2019-08-23 | 长春大学 | A kind of virtual fire-fighting drill method and system based on body-sensing and VR technology |
| CN110199944A (en) * | 2019-05-30 | 2019-09-06 | 吉林农业大学 | A method of utilizing transparent screw and vision decoy test experiments animal attraction |
| CN111223363A (en) * | 2020-02-11 | 2020-06-02 | 杭州同绘科技有限公司 | Incremental attention training method based on VR and eye tracker |
| CN111227849A (en) * | 2020-02-11 | 2020-06-05 | 杭州同绘科技有限公司 | Attention assessment system and method based on VR |
| CN111959152A (en) * | 2019-09-30 | 2020-11-20 | 菲斯克(北京)体育科技有限公司 | Evaluation table for psychological behaviors and emotional problems of infants |
| WO2021114288A1 (en) * | 2019-12-13 | 2021-06-17 | 中国科学院深圳先进技术研究院 | Visuospatial attention detection method and related product |
| CN114159077A (en) * | 2022-02-09 | 2022-03-11 | 浙江强脑科技有限公司 | Meditation scoring method, device, terminal and storage medium based on electroencephalogram signals |
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| CN106691441A (en) * | 2016-12-22 | 2017-05-24 | 蓝色传感（北京）科技有限公司 | Attention training system based on brain electricity and movement state feedback and method thereof |
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| CN107219888A (en) * | 2017-05-23 | 2017-09-29 | 北京中达金桥技术股份有限公司 | Indoor expansible interactive walkthrough realization method and system based on Kinect |
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| CN107193385A (en) * | 2017-06-29 | 2017-09-22 | 云南大学 | It is a kind of based on methods of the Kinect to keyboard Behavior modeling |
| CN110162163A (en) * | 2018-03-08 | 2019-08-23 | 长春大学 | A kind of virtual fire-fighting drill method and system based on body-sensing and VR technology |
| CN110162163B (en) * | 2018-03-08 | 2023-05-09 | 长春大学 | Virtual fire-fighting exercise method and system based on somatosensory and VR technology |
| CN108937965A (en) * | 2018-05-03 | 2018-12-07 | 华东师范大学 | A kind of attention evaluation system and method based on sitting posture analysis |
| CN109376720B (en) * | 2018-12-19 | 2022-01-18 | 杭州电子科技大学 | Action classification method based on joint point space-time simple cycle network and attention mechanism |
| CN109376720A (en) * | 2018-12-19 | 2019-02-22 | 杭州电子科技大学 | Classification of motion method based on artis space-time simple cycle network and attention mechanism |
| CN109727659A (en) * | 2018-12-28 | 2019-05-07 | 中国科学院心理研究所 | Habituation adjuvant treatment technology platform and application method based on virtual reality |
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| WO2021114288A1 (en) * | 2019-12-13 | 2021-06-17 | 中国科学院深圳先进技术研究院 | Visuospatial attention detection method and related product |
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