Dissertation > Excellent graduate degree dissertation topics show

Digital prints text clarity Perceived Quality Evaluation Method of

Author: JiangGuiPing
Tutor: JinYang；XuYanFang
School: Qufu Normal University
Course: Educational Technology
Keywords: Digital prints Quality examination Text sharpness Objective index Subjective evaluation
CLC: TS805.3
Type: Master's thesis
Year: 2011
Downloads: 62
Quote: 0
Read: Download Dissertation

Abstract


With the growing popularity of digital printing technology and the increasing attention on digital prints quality, how to evaluate the text sharpness of digital prints with common digital printing equipments and paper has become a focus issue to improve the digital prints quality.This research primarily focuses on the evaluation model establishment of perceptual quality of digital prints sharpness so that the text sharpness can be predicted through this model.Theoretical analysis:first of all, this research briefly introduces the current digital prints quality requirements, the quality defects of digital prints and evaluation methods of digital prints quality; secondly, it discusses the objective quality indexes of text and line sharpness in ISO13660. The theoretical analysis lays a foundation of text sharpness comprehensive evaluation and carries out fundamental research on digital prints quality control and examination.Experimental research:firstly, designed evaluation text chart containing uniformly-spaced stripes with different orientations and widths and characters with different sizes and fonts, and output the text chart through printers with different imaging methods and digital printing paper with different types; secondly, based on eight line or text sharpness objective indexes of ISO13660, extracted four most typical indexes of contrast, raggedness, blurriness and line width and selected 16 samples with different quality levels based on the four indexes;lastly, correlated the subjective evaluation results with objective measurement values, established the mathematical relations between subjective evaluation and objective measurement and realized the evaluation model of perceptual quality of digital prints sharpness.Main conclusions of this research:(1) Mathematical evaluation model of perceptual quality is designed for black and magenta digital prints. (2) Perceptual quality of digital prints line and text sharpness is correlated with its contrast, raggedness and width, positively related with contrast and width and negatively related with raggedness. Based on this correlation, perceptual quality of text sharpness can be well predicted through the linear model established.The evaluation model of perceptual quality of digital prints text sharpness established in this research is the first attempt in China to correlate the perception of human eye on text sharpness with the objective index of physical measurement, thus providing positive support to the development of digital printing technology. Meanwhile, this research proposes new methodologies to the research on digital prints quality evaluation and provides basis for the quality improvement of digital printing devices, printing substrates and ink.

Related Dissertations

  1. Studyon Thermal-Wet Comfort of Women’s Table Tennis T-Shirt,TS941.15
  2. Research the Most Important Influencing Factor in a Subjective Evaluation about the Acoustic Environment in Concert Hall,TU112
  3. Comfort of pantyhose taking,TS941.1
  4. Study on the Evaluation Procedure of Vehicle Sound Quality and the Development of Software,U467.493
  5. Subjective Evaluation of Engine and Vehicle Sound Quality and Road Traffic Noise Prediction, Analysis,TK401
  6. Wavelet-Based Vehicle Sound Quality Improvement,U467.499
  7. Kodak chain business transformation strategy study,F721
  8. Abnormal Noise Sources Identification and Control of the Wall-mounted Air-conditioner,TB657.2
  9. The Development and Application of Pressure Measurement System for the Foundation Garments,TS941.56
  10. The Study of Active Control on Car Interior Sound Quality,TB53
  11. Residential Living artificial illumination Environmental Quality Assessment System,TU113.661
  12. The Design of Soundscape Accents in Urban Open Public Spaces,TU986.48
  13. Research on Analysis and Evaluation Method of Vehicle Interior Sound Quality Based on Binaural Auditory Model,U461
  14. Research on New Method of Demodulation Analyze of Gear Noise and Subjective Evaluation System of Sound Quality,TB535
  15. Study on Modeling and Simulation of Steering System for Subjective Evaluation,U463.4
  16. Research on the Methods of Subjective Evaluation for Handling and Stability of A Car,U461.6
  17. Establishment and Applied Research of Car Interior Sound Quality Evaluation Model,TB53
  18. The Evaluation and Analysis of the Handle of Cotton and Fibriia Like Fabrics Used in Summer Garments,TS101
  19. Research on Subjective Evaluation of Powertrain Performance and Brake Performance of Automobile,U461.1
  20. Primary Research on the Objective Assessment System for the Tire Handling and Stability Performance,U461.6

CLC: > Industrial Technology > Light industry,handicrafts > Printing Industry > General issues > Printing technology > Color printing
© 2012 www.DissertationTopic.Net  Mobile