Dissertation > Excellent graduate degree dissertation topics show

Research of Video-based Human-Computer Interaction Mode

Author: WeiYuanJie
Tutor: FangLuPing
School: Zhejiang University of Technology
Course: Computer Software and Theory
Keywords: Human-Computer Interaction region grow Mean Shift kalman Grey prediction
CLC: TP391.41
Type: Master's thesis
Year: 2011
Downloads: 57
Quote: 1
Read: Download Dissertation


Nature Human-Computer Interaction is the development direction of future computer technology, the ultimate goal is that computer can see, hear, speak, and think. In the paper, HCI system interacts naturally with the color indicators as the interactive media and camera as the input device, research focuses on the color indicators’detection and tracking, which could be divided into three parts:Firstly, extract object’s motion region. If the color indicators are detected in the whole image, it will be badly interfered by the background with similar color. Taking the color indicators in the motion region into consideration, first of all, background image is chosen based on the similarity between consecutive frames of a video in L channel of Lab color space. Then image differentiation on any frame and the background can identify the motion region, which can reduce the search area for the color indicators. The algorithm is simple with low computation and good robustness.Secondly, detect color indicators. The color indicators are affected easily by light condition and background condition, and color threshold shifts, but in the same scenarios, it is stabler. Firstly, find the convex hull of motion region and take samples within it. By assigning the weight, seeds can be determined using clustering method. Secondly, region growth is implemented by applying Bayesian decision with minimal error ratio. The proposed method is applicable to more conditions and contributes to better results compared with traditional color-threshold vector method.Thirdly, track color indicators. Color indicators’tracking implements with Mean Shift algorithm in the following frame according to the results of detection. After finishing the experiment we have found that color indicators lost when it moves fast or system handles fewer frames per second, so there is no overlap in the target area between the adjacent frames. This problem can be overcomed by applying Mean Shift Algorithm based on kalman filter prediction or Mean Shift Algorithm based on Grey prediction. The former has large amount of computation, which only handle fewer frames per second, bringing about not guaranteeing the continuity of target motion in the video. The latter can overcome those limitations, which becomes more suitable.The result shows the color indicators’detection method and tracking algorithm can meet the demand of HCI system, has certain practical value and application prospect.

Related Dissertations

  1. The Research of Navigation Multi-Sensor Data Fusion Technology Based on Micro Unmanned Platform,V249.32
  2. Algorithm Research on SINS/GPS Integrated Navigation Syste,V249.328
  3. Attitude Determination and Finite Time Control Algorithms for a Satellite,V448.222
  4. Satellite Attitude Determination Based on Gyro and Star Sensor,V448.2
  5. Research on Transfer Alignment of the Missile Onboard the Aircraft,V249.322
  6. Polarized-Light/Geomagnetism/GPS/SINS Integrated Navigation Algorithm,V249.328
  7. Maneuver Detection and Tracking with the Radar Rate Measurement,TN953
  8. Tracking Cells in High Density Image Sequences Based on Mean Shift Algorithm Combined with Topological Constraint,Q25
  9. Adaptive Adjustment of fire emergency plan,X928.7
  10. A New Experience of Interaction,TP11
  11. Research on Object Detection and Tracking Method in Active Vision System,TP391.41
  12. Combined DWT Dynamic Data Reconciliation Research and Application,TP274
  13. Research on Navigation System of Agricultural Wheeled-Mobile Robot Using Multi-Information Fusion,TP242
  14. Research of Image Segmentation in Web Image Search Based on GPUs,TP391.41
  15. Intelligent Remote Control Design of Home Video System and Research of Its Way of Interacting,TP872
  16. Satellite Formation Satellite Relative Measurement Technology,V448.2
  17. Helicopter main gearbox fault diagnosis and failure prediction technology research,V267
  18. DM642-based infrared moving target detection and tracking technology,TP391.41
  19. Research on Pursuer-Evader Tracking Problem Using WSN,TP212.9
  20. Study and Design on Humanoid Robot Monitoring and Control System,TP242
  21. Yellow grid illegal parking monitoring system design and software processes,TP274

CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
© 2012 www.DissertationTopic.Net  Mobile