Preferred Color Reproduction of Image on Internet｜國立臺灣科技大學博碩士論文系統

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研究生：	張士文 Shih-Wen Chang
論文名稱：	Preferred Color Reproduction of Image on Internet Preferred Color Reproduction of Image on Internet
指導教授：	紀佳芬 Chia-Fen Chi
口試委員:	王孔政 Kung-Jeng Wang 許總欣 Tsung-Shin Hsu
學位類別：	碩士 Master
系所名稱：	管理學院 - 工業管理系 Department of Industrial Management
論文出版年：	2011
畢業學年度：	99
語文別：	英文
論文頁數：	76
外文關鍵詞：	PCR, Preferred Color Reproduction
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Human preferred color is one important study of imaging science and psychology. The method of reproduce the image with human preferred color is called preferred color reproduction (PCR). PCR has been most utilized in some fields such as professional photography and commercial printing. However it was not well used in consumer photography. One reason is in the age of film photography, any imaging enhancement was professional technique which was not able to be reached by consumer.
The digital and internet evolutions have changed consumer photography. Also the behavior of storing and sharing of picture have changed.
This thesis was originated by the question: “Will that changes make the PCR much applicable?”
We designed an experiment to sample preference of the color data through the internet to eyes of observers. We conclude the model of image deliver through internet to display device and recognized by user as Netware-Sharing-Display-Recognition (NSDR) model.
The distribution and mean of sample frequency tell the deviation created in this NSDR model. The conclusion is the there is still deviation exists according to our finding. The deviation most comes from inconsistent LCD color and different viewing condition.
In the future the mobile internet users will be more than PC users. Many researches indicate that will happen in 5 years. At that time the NSDR model will be illustrated with only one mobile device and a cloud in the cycle. Processes of capturing, uploading, sharing and displaying will be done in one box. Moreover, the color process unit can be transferred from client device to cloud service. That will be the perfect environment for PRC.

Contents
Chap 1 Overview ............................................................................................................................... 11
1 Introduction ................................................................................................................................. 11
2 Preferred sky color example .................................................................................................. 12
2.1 PCR in film photography process ..................................................................................... 12
2.2 Assumption: PCR in NSDR model .................................................................................... 15
Chap 2 Background ........................................................................................................................... 17
1 Age of negative film .................................................................................................................. 17
2 Network-Sharing-Display-Recognition (NSDR) model. ............................................... 17
2.1 Changes of imaging devices............................................................................................... 18
2.2 Change of picture sharing ................................................................................................... 18
3 PCR – Preferred Color Reproduction ................................................................................... 20
4 PCR on camera ............................................................................................................................ 21
5 Hue angle ..................................................................................................................................... 21
6 Memory Color shift..................................................................................................................... 22
7 JPEG ................................................................................................................................................ 23
8 Deviations..................................................................................................................................... 23
8.1 The internet album ................................................................................................................ 23
8.2 Web Browser ........................................................................................................................... 25
8.3 Display ....................................................................................................................................... 29
9 Range of research ...................................................................................................................... 32
Chap 3 Experiment ............................................................................................................................ 33
1 Samples ........................................................................................................................................ 33
2 Experiment ................................................................................................................................... 33
2.1 Sky .............................................................................................................................................. 34
2.2 Green ......................................................................................................................................... 34
2.3 Skin ............................................................................................................................................. 34
6
2.4 Range of hue angle ................................................................................................................ 35
3 Web page programming .......................................................................................................... 39
3.1 Color on web page ................................................................................................................. 39
3.2 Storing data on server ......................................................................................................... 40
3.3 The on-line questionnaire pages description ............................................................... 42
4 Literature data ............................................................................................................................. 49
Chap 4 Results ................................................................................................................................... 50
1 Original data of feedbacks ...................................................................................................... 50
2 Transform of non-discrete to discrete ................................................................................ 50
3 Sample frequency ...................................................................................................................... 51
3.1 Sample frequency of sky color ....................................................................................... 51
3.1.1 Sample frequency of standalone sky color (non-discrete) ............................ 51
3.1.2 Sample frequency of preferred sky color with image context ..................... 52
3.2 Sample frequency of experimental green color ....................................................... 54
3.2.1 Sample frequency of standalone green color ..................................................... 54
3.2.2 Sample frequency of green with image context ................................................ 55
3.3 Sample frequency of experimental skin color ........................................................... 56
3.3.1 Sample frequency of standalone skin color (non-discrete) .......................... 56
3.3.2 Frequency of Skin with image context .................................................................. 58
4 Mean, STDEV and normal distribution check .................................................................. 59
5 Interval estimation .................................................................................................................... 60
5.1 Standalone sky color without image context .............................................................. 60
5.2 Standalone green color without image context .......................................................... 60
5.3 Standalone skin color without image context ............................................................. 61
5.4 Sky color with image context ............................................................................................ 61
5.5 Green color with image context ........................................................................................ 62
5.6 Skin color with image context ........................................................................................... 62
6 Analysis of sample mean and distribution ........................................................................ 64
6.1 Analysis of sky color .............................................................................................................. 64
6.2 Analysis of green color ......................................................................................................... 65
7
6.3 Analysis of skin color ............................................................................................................ 66
Chap 5 Conclusion ............................................................................................................................. 67
1 The positive facts of experiment result ............................................................................. 67
2 Negative facts of experiment result .................................................................................... 67
3 Applicability of PCR in NSDR model .................................................................................... 68
4 Future PCR applicability ........................................................................................................... 69
4.1 Mobile internet overtake PC internet within 5 years ................................................ 69
4.2 Increase of mobile internet bandwidth and cloud computing ............................... 70
4.3 Mobile phone structure change driven by mobile bandwidth and cloud computing ................................................................................................................................................ 71
Reference ................................................................................................................................................. 75

                                

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