Perceptual evaluation of JPEG-coded stereoscopic images

Seuntiëns, Pjh Pieter; Meesters, Lmj Lydia; IJsselsteijn, Wijnand A.

doi:10.1117/12.474122

Cited by 24 publications

(13 citation statements)

References 16 publications

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“…As said earlier, it has been shown that perceived image quality for 2D and 3D images is usually the same. [10][11][12][13] This means that the image-quality circle 8,9 cannot easily be applied to 3D displays. Broader concepts such as presence, naturalness and viewing experience have been suggested 11,12,17 and used to extend the image quality circle (see Fig.…”

Section: Discussionmentioning

confidence: 99%

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Perception of detail in 3D images

Heynderickx

Kaptein

2009

SPIE Proceedings

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A lot of current 3D displays suffer from the fact that their spatial resolution is lower compared to their 2D counterparts. One reason for this is that the multiple views needed to generate 3D are often spatially multiplexed. Besides this, imperfect separation of the left-and right-eye view leads to blurring or ghosting, and therefore to a decrease in perceived sharpness. However, people watching stereoscopic videos have reported that the 3D scene contained more details, compared to the 2D scene with identical spatial resolution. This is an interesting notion, that has never been tested in a systematic and quantitative way. To investigate this effect, we had people compare the amount of detail ("detailedness") in pairs of 2D and 3D images. A blur filter was applied to one of the two images, and the blur level was varied using an adaptive staircase procedure. In this way, the blur threshold for which the 2D and 3D image contained perceptually the same amount of detail could be found. Our results show that the 3D image needed to be blurred more than the 2D image. This confirms the earlier qualitative findings that 3D images contain perceptually more details than 2D images with the same spatial resolution.

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Section: Discussionmentioning

confidence: 99%

“…8,9 For 3D displays however, it has been shown that people do not take the stereoscopic depth into account when judging image quality. [10][11][12][13] Something similar may be the case in the judgment of perceived sharpness. Sharpness is clearly an important and well known 2D image-quality attribute.…”

Section: Introductionmentioning

confidence: 99%

Perception of detail in 3D images

Heynderickx

Kaptein

2009

SPIE Proceedings

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“…However, the visual impact of recent display enhancements, such as Ambilight or 3D, goes beyond the concept of image quality. [3][4][5][6][7] Image quality is still an important aspect of the subjective performance of the display, but it is not all-embracing anymore. To fully grasp the perceptual performance of these new systems, the Image Quality Circle needs expansion.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of 3D-TV systems

et al. 2008

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The image quality circle is a commonly accepted framework to model the relation between the technology variables of a display and the resulting image quality. 3D-TV systems, however, go beyond the concept of image quality. Research has shown that, although 3D scenes are clearly more appreciated by subjects, the concept 'image quality' does not take this added value of depth into account. Concepts as 'naturalness' and 'viewing experience' have turned out to be more useful when assessing the overall performance of 3D displays. In this paper, experiments are described that test 'perceived depth', 'perceived image quality' and 'perceived naturalness' in images with different levels of blur and different depth levels. Results show that naturalness incorporates both blur level as well as depth level, while image quality does not include depth level. These results confirm that image quality is not a good measure to assess the overall performance of 3D displays. Naturalness is a more promising concept.

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“…However, the development of an objective quality metric, which incorporates the perceptual aspects of 3-D, is a complex process as the perceived attributes (e.g., depth, presence, naturalness, visual comfort) of 3-D are multi-dimensional in nature. Seuntiens et al describes in [2] that JPEG coding of stereoscopic video has an effect on overall image quality, but no effect on perceived depth. In [3], the added value of depth is not taken into account when assessing the perceived image quality of MPEG-2 coded stereo sequences.…”

mentioning

confidence: 99%

“…The effect of different artifacts introduced by image coding on the perceived quality of 3-D video may be diverse in nature [2]. Therefore, appreciation oriented psychophysical scaling paradigms can be used in the assessment of emerging 3-D technologies, such as stereoscopic TV and stereoscopic video streaming.…”

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confidence: 99%

Prediction of stereoscopic video quality using objective quality models of 2-D video

et al. 2008

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The timely deployment of 3-D video applications requires accurate objective quality measures, so that time consuming subjective tests can be avoided.Investigates is the correlation between subjective and objective evaluations of colour plus depth map 3-D video. The investigation is conducted for different compression ratios. Subjective tests are performed to determine the overall image quality and depth perception of a range of asymmetrically coded video sequences. The subjective results are used to determine more accurate objective quality assessment metrics for colour plus depth map based stereoscopic video.

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Perceptual evaluation of JPEG-coded stereoscopic images

Cited by 24 publications

References 16 publications

Perception of detail in 3D images

Perception of detail in 3D images

Performance evaluation of 3D-TV systems

Prediction of stereoscopic video quality using objective quality models of 2-D video

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