Dissertation > Excellent graduate degree dissertation topics show

Internet-based applications and characteristics of human visual measurement of

Author: LiQiong
Tutor: ShiJunSheng；YuHongFei
School: Yunnan Normal University
Course: Optical Engineering
Keywords: Controlled-computer monitors Human vision system(HVS) Visual characterization monitor Contrast sensitivity function(CSF) Subjective evaluation
CLC: TP391.41
Type: Master's thesis
Year: 2009
Downloads: 25
Quote: 1
Read: Download Dissertation

Abstract


Along with the development of computer,Internet and digital technology, controlled-computer monitors become the the main carrier of information. Monitor-based image technology has a wide range of applications,the display result directly impact the general Internet network services.The human vision system(HVS) plays an important role in the the process of image display,comparison,and quality assessment,and the characteristics of HVS is the theoretical basis for image display, processing,understanding,and so on.In the field of image understanding,research based on HVS is more active.In this paper,some visual experiments and measure ments for characteristics of HVS on monitors in Internet were studied.Studies include followings:(1) The optimum settings of monitors were studied.Studies include black spots, largest brightness settings,and other settings for monitors,which is basis for carrying out aim to complete visual experiments on the Internet.(3) Experiment scheme of Internet-based gamma estimation was designed,and web-based estimation program was developed.Gamma estimation experiment was held through Internet,together with three different environments for viewing monitors(dark,dim,office).Comparison were made between experimental results and measured ones by instruments.(4) Experiment scheme of Internet-based measurement of maximum brightness ratio of three channels was designed,and web-based estimation program was developed.Ratio estimation experiment was held through Internet,and comparisons were made between experimental results and measured ones by instruments.(5) Assessment scales for still compressed images were put forward,standard color images were collected and databases were established for subjective evaluation. By using a psychophysical method of pairwise comparison,subjective evaluation experiments on optimal compression ratio of JPEG and JPEG2000 were conducted on monitors for the images,which were from JPEG and lossy JPEG2000 with seven compression ratios. (6) Experimental program of Internet-based CSF measurement were designed, web-based measure program was developed,and measurement experiment was held through Internet.

Related Dissertations

  1. Studyon Thermal-Wet Comfort of Women’s Table Tennis T-Shirt,TS941.15
  2. The graduate physical exercise motive and effect subjective evaluation research,G807.4
  3. Contrast sensitivity function of the human eye perception Applied Research in the image,TP391.41
  4. Measurement of the human eye with the display contrast sensitivity function,TP391.41
  5. Study on the Subjective Evaluation of Traffic Markings Based on Video-Processing Technique,U491.52
  6. Research on Subjective Evaluation of Powertrain Performance and Brake Performance of Automobile,U461.1
  7. Vehicle Sound Quality Evaluation Method Research and the Development of Software System,U461
  8. Study on Sleeves Structures of Women’s Fitting Clothing,TS941.2
  9. A Preliminary Study on the Third Creation of Recording Arr,J619
  10. The Design of Soundscape Accents in Urban Open Public Spaces,TU986.48
  11. Research the Most Important Influencing Factor in a Subjective Evaluation about the Acoustic Environment in Concert Hall,TU112
  12. Subjective Evaluation of Engine and Vehicle Sound Quality and Road Traffic Noise Prediction, Analysis,TK401
  13. Study on Basic Theory of Sound Quality in Structrural-Acoustic Coupled Cavity,TB535
  14. Study on Modeling and Simulation of Steering System for Subjective Evaluation,U463.4
  15. Research on the Methods of Subjective Evaluation for Handling and Stability of A Car,U461.6
  16. Establishment and Applied Research of Car Interior Sound Quality Evaluation Model,TB53
  17. Primary Research on the Objective Assessment System for the Tire Handling and Stability Performance,U461.6
  18. Research of Vehicle Handling Evaluation Method Based on Multiple Linear Regressions,U461.6
  19. Electrical operation of mental workload of operating personnel,X934
  20. Comfort of knitted garments pressure testing and research,TS941.1
  21. Preliminary Study on the Methods of Subjective Evaluation of Old Building Renewal Investigation,TU201

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