Digital video quality vision models and metrics phần 8 potx

... Stefan. Digital video quality : vision models and metrics / Stefan Winkler. p. cm. Includes bibliographical references and index. ISBN 0-470-02404-6 1. Digital video. 2. Image processing Digital ... is necessary to build computational models of the HVS and integrate them in tools for perceptual quality assessment. Digital Video Quality - Vision Models and...

Ngày tải lên: 27/06/2014, 14:20

... to hybrid standards such as D2-MAC (analog video, digital sound) and delayed the introduction of 100 % digital video. However, the very rapid progress made in compression techniques and IC technology ... algorithms and modulation schemes, which are explained in Chapters 6 and 7. We will now examine the principles and various steps of video and audio compression which allo...

Ngày tải lên: 03/07/2014, 16:06

... the team and contribute to keeping morale high. 166 Managing projects in human resources when the team must break up. Planning for and anticipating the end right from the beginning can bring significant ... Tuckman and Jensen, 1977) are: ࿖ Forming – where the members of the team meet each other and begin to make relationships. 1 48 Managing projects in human resource...

Ngày tải lên: 07/08/2014, 02:20

... href The target of the link. charset The character set of the target of the link. hreflang The language of the target of the link. type The MIME type of the target of the link. rel The relationship ... relationship of the target of the link to the current page. Some uni- versally understood values are shortcut icon and stylesheet. rev The relationship of th...

Ngày tải lên: 07/08/2014, 17:21

... DCT. The signal used in Fig. 5. 28( b) is the narrow-band Gaussian signal Si plus time-localized white Gaussian noise $2 with 10% duty cycle and power ratio (81 /82 ) = —8dB. Basically, ... Expansion and Degrees of Freedom of a Signal, " Proc, IEEE, Vol. 68, pp. 5 38- 539, 1 980 . R. B. Blacknian and J. W. Tukey, The Measurement of Power Spec...

Ngày tải lên: 08/08/2014, 01:21

... 19 compression 36 artifacts 42 lossy 36 standards 39 video 38 cones 11 consistency 65 contrast band-limited 72 isotropic 72 Digital Video Quality - Vision Models and Metrics Stefan Winkler # 2005 John ... 50 video coding 36 compression 36, 38 interlaced 38, 47 progressive 38, 47 quality 35 Video Quality Experts Group (VQEG) 66, 108 viewing conditions 50, 51 viewing d...

Ngày tải lên: 09/08/2014, 19:21

... Digital Video Quality 5.2 Video 10 8 5.2 .1 Test Sequences 10 8 5.2.2 Subjective Experiments 10 9 5.2.3 Prediction Performance 11 1 5.2.4 Discussion 11 5 5.3 Component Analysis 11 7 5.3 .1 Dissecting ... Attributes 14 5 6.4 Summary 14 8 7 Closing Remarks 14 9 7 .1 Summary 14 9 7.2 Perspectives 15 1 Appendix: Color Space Conversions 15 5 References 15 7 Index 17 1 CONT...

Ngày tải lên: 14/08/2014, 12:21

... contrast (Michelson, 1 927 ): C M ẳ L max L min L max ỵ L min ; 2: 3ị where L min and L max are the luminance extrema of the pattern. Figure 2. 12, the so-called Campbell–Robson chart { (Campbell and Robson, ... 17 mm for the eye, –15 –10 –5 0 5 10 15 20 0 20 40 60 80 100 120 140 160 180 20 0 Eccentricity [mm] Receptors [1000/mm 2 ] Cones Rods Optic disc Figure 2. 6 The dist...

Ngày tải lên: 14/08/2014, 12:21

... of visual quality metrics, from simple pixel-based metrics such as MSE and PSNR to advanced vision- based metrics proposed in recent years. Digital Video Quality - Vision Models and Metrics Stefan ... contours and edges. ARTIFACTS 43 3. 1 VIDEO CODING AND COMPRESSION Visual data in general and video in particular require large amounts of bandwidth and sto...

Ngày tải lên: 14/08/2014, 12:21

... quality ratings. The CVQE is one of the few vision- model based video quality metrics designed for and tested with low bitrate video. 3 .4. 4 Specialized Metrics Metrics based on multi-channel vision ... (from S. Winkler et al. (2001), Vision and video: Models and applications, in C. J. van den Branden Lambrecht (ed.), Vision Models and Applications to Image a...

Ngày tải lên: 14/08/2014, 12:21

... (from S. Winkler et al . (2001), Vision and video: Models and applications, in C. J. van den Branden Lambrecht (ed.), Vision Models and Applications to Image and Video Processing, chap. 10, Kluwer ... motion energy and combinations thereof. 3 .5. 3 Video Quality Experts Group The most ambitious performance evaluation of video quality metrics to date was undertak...

Ngày tải lên: 14/08/2014, 12:21

... Lambrecht and Farrell (19 96) . Digital Video Quality - Vision Models and Metrics Stefan Winkler # 2005 John Wiley & Sons, Ltd ISBN: 0-470-02404 -6 The impulse responses of the IIR and FIR filters ... single sub-band, whose actual frequency response is plotted (b) (from S. Winkler et al. (2001), Vision and video: Models and applications, in C. J. van den Branden...

Ngày tải lên: 14/08/2014, 12:21

... (from S. Winkler et al. (2001), Vision and video: Models and applications, in C. J. van den Branden Lambrecht (ed.), Vision Models and Applications to Image and Video Processing, chap. 10, Kluwer ... the spatio-temporal mechanisms in the visual system. As discussed in 0 .7 0 .75 0.8 0.85 0.9 0 .73 0 .74 0 .75 0 .76 0 .77 0 .78 0 .79 0.8 0.81 Pearson linear correlati...

Ngày tải lên: 14/08/2014, 12:21

... require more specific quality indicators than an overall rating or a visual distortion map. For instance, it can be useful to assess the Digital Video Quality - Vision Models and Metrics Stefan Winkler # ... sharp ẳ R sharp ~ RR sharp and color ẳ R color ~ RR color may be combined with the HVS- 136 METRIC EXTENSIONS 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1...

Ngày tải lên: 14/08/2014, 12:21

... Klassen, R. V. ( 199 8). A comparison of two image quality models. In Proc. SPIE Human Vision and Electronic Imaging, vol. 3 299 , pp. 98 –1 09, San Jose, CA. Liang, J., Westheimer, G. ( 199 5). Optical ... parameters (Boynton and Foley, 199 9; Foley and Chen, 199 9). Watson et al. (2001) incorporated certain aspects of temporal noise sensitivity and temporal masking into a vid...

Ngày tải lên: 14/08/2014, 12:21