A Gain Adaptive Adjustment Method Mapping Gesture Motion to Interface

An adaptive adjustment and gesture movement technology, applied in the input/output process of data processing, the input/output of user/computer interaction, instruments, etc. Interactive usability, reduced user experience, etc., to avoid the problem of CD gain changes, reduce unnatural and unexpected movements, and solve expensive effects

Active Publication Date: 2019-05-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This change in CD gain alters the motion requirements of the interactive task and the visual scale of the task, resulting in unnatural and unexpected movements that are prone to manipulation errors
Too small or too large CD gain value will affect the interaction accuracy, user fatigue, control stability, etc., reduce the interaction usability, and reduce the user experience

Method used

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  • A Gain Adaptive Adjustment Method Mapping Gesture Motion to Interface
  • A Gain Adaptive Adjustment Method Mapping Gesture Motion to Interface
  • A Gain Adaptive Adjustment Method Mapping Gesture Motion to Interface

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Experimental program
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Embodiment

[0050] In the past, when calculating the CD gain in machine vision gesture interaction, the gesture interaction was divided into two sets of maps, such as Figure 4 As shown: 1) The mapping between the movement of the hand in the operation space and the camera tracking result, here is called the hand tracking mapping, which can be measured by the input accuracy k, that is, in the upper physical space, the unit length in the camera image The number of pixels formed, available Calculated, it is determined by the hand tracking algorithm and the specifications of the camera; 2) The mapping between the tracking result and the cursor movement, which is called tracking cursor mapping here, can be used count. Among them, V c Indicates the moving speed of the cursor on the display screen, L is the resolution of the camera on the screen, and α is the horizontal or vertical field of view of the camera, such as figure 1 shown. U is the refresh rate of the screen, R is the tracking c...

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Abstract

The invention discloses a gain adaptive adjustment method for mapping a gesture motion to an interface, comprising the following sequential steps: S1. collecting video; S2. detecting the user's hand and face; S3. recognizing the width information of the hand in the video; S4 . Obtain the position information of the user's hand movement; S5. Calculate the moving speed of the user's hand in the physical operation space; S6. Use the function of the gain between the cursor and the moving speed of the human hand constructed for the current gesture interaction system on the moving speed of the human hand to calculate Adaptive cursor movement speed; S7. Carry out weighted summation and smoothing on the cursor movement speed; S8. Calculate the movement increment of the cursor output between frames on the display screen; S9. Make a response on the display screen; repeat the steps S4-9. When the distance between the user's hand and the camera in the direction of the optical axis changes, the method can still maintain the relative stability of the gain between the cursor and the user's hand, thereby realizing natural and stable manipulation of the cursor.

Description

technical field [0001] The invention relates to the fields of machine vision technology and human-computer interaction control, in particular to a gain adaptive adjustment method for mapping gesture motion to an interface. Background technique [0002] In recent years, vision-based gesture interaction technology is increasingly becoming the main development direction of non-contact human-computer interaction technology due to its natural, direct, device-free, and easy-to-share advantages, and is gradually widely used in the interaction of large-screen terminals. technically. The commonly used operation method is gesture roaming, which maps the movement of the user's palm in the physical space to the movement of the cursor on the display screen to realize the operation of the cursor. In this field, the velocity-oriented mapping method has been widely used. [0003] During vision-based gesture interaction, the mapping from the human hand to the camera is often unstable due t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/01G06K9/00G06K9/32
CPCG06F3/017G06V40/28G06V10/25G06V2201/07
Inventor 区则君徐向民许望
Owner SOUTH CHINA UNIV OF TECH
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