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Restraining method of control points of using marginal effect

A control point and margin technology, applied to the control point constraint field with marginal effect, can solve the problem of not considering the effect of marginalization, etc.

Inactive Publication Date: 2009-04-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, the possibility of the user's control point moving outside the screen is not great, and the Dead-reckoning method does not take into account this marginal effect

Method used

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  • Restraining method of control points of using marginal effect
  • Restraining method of control points of using marginal effect
  • Restraining method of control points of using marginal effect

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The specific implementation process of the control point constraint method with marginal effect is as follows.

[0037] 1) Record the movement position of the remote control point in each millisecond within the last N seconds;

[0038] For example, location data within the last 2 seconds may be recorded.

[0039] 2) When network jitter occurs, in order to predict the moving position of the control point, first calculate the current velocity of the control point in the X direction and Y direction, using aveVelocity X and aveVelocity Y To represent; the approximate speed is through the nearest T last The position coordinates at the moment (X last , Y last ) and M milliseconds ago T flag The location coordinates (X flag , Y flag ) to calculate;

[0040] aveVelocit y X = ( X ...

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Abstract

Based on moving speed, acceleration of object, and distance of dragged control point, the invention adjusts predicted result dynamically. Based on distance between position of initial dragged control point of user and initial predicted position, the invention adjusts predicted weight. The more faraway the distance is, the more obvious of restriction is. Restriction is amplified in exponential. The invention compensates unfavored result brought by wobble of network, restricts prediction of movement of control point so as to raise precision of prediction for movement of control point, and reach better effect of prediction.

Description

technical field [0001] The invention relates to the field of computer-supported collaborative perception, in particular to a control point constraint method using marginal effects. Background technique [0002] One of the outstanding achievements of mankind in the 20th century, computer technology has brought human society into the information age. With the continuous deepening of the informationization process, the integration of communication technology, computer and network technology has created a new research field - Computer Supported Cooperative Work CSCW (Computer Supported Cooperative Work). [0003] When co-designers are working together, monitoring the trajectory of remote control points can better help users understand and predict the intentions of other designers. Showing the change process of remote pattern objects is a valuable means to support collaborative work. However, networks often suffer from erratic delays, also known as jitter, which can lead to ina...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/20H04L1/24
Inventor 陈纯卜佳俊杨建旭姜波
Owner ZHEJIANG UNIV