Browse > Article

A Study on the Effect of Disparity-based Asymmetrical Filtering on the Binocular Stereoscopic Video  

엄기문 (한국전자통신연구원 디지털방송연구단 방송시스템연구그룹)
강훈종 (한국전자통신연구원 디지털방송연구단 방송시스템연구그)
윤국진 (한국전자통신연구원 디지털방송연구단 방송시스템연구그)
안충현 (한국전자통신연구원 디지털방송연구단 방송시스템연구그)
이수인 (한국전자통신연구원 디지털방송연구단 방송시스템연구그룹)
Publication Information
Journal of Broadcast Engineering / v.9, no.2, 2004 , pp. 131-141 More about this Journal
Abstract
Current binocular stereoscopic displays cause visual discomfort when objects with large disparities are present in the scene. One solution for improving visual comfort is synthetic depth-of-field processing, which simulates the characteristics of a human visual system. With this technique, visual comfort is improved by blurring portions of the background and/or foreground in the scene. However, this technique has the drawback of degrading overall image quality because the blurring is typically applied to both left and right images. To alleviate the visual discomfort, we propose a novel disparity-based asymmetrical filtering technique. Proposed technique applies the filtering to the image of one eye only, and controls the blur level according to the disparity information between stereoscopic images. We investigate the effects of this technique on stereoscopic video by measuring visual comfort and apparent sharpness. Our results indicate that disparity-based asymmetrical filtering can improve visual comfort of stereoscopic video while it maintains apparent sharpness if unfixated regions with large disparities are blurred under the appropriate filtering condition.
Keywords
Stereoscopic video; visual comfort; 3DTV; human factors; video processing;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Y. Y. Yeh and L. D. Silverstein, 'Limits of Fusion and Depth Judgement in Stereoscopic Color Displays,' Human Factors, vol. 31 no. 1, pp. 45-60, 1990
2 L. Stelmach, F. Speranza, Gi Mun Um, J. Tam, and T. Martin, A Study on the Visual Fatigue Reduction Techniques in the Binocular Stereo System, Collaborative Research Final Report, 2002
3 S. Pastoor and M. Wopking, '3-D Displays: A Review of Current Technologies,' Displays, 17, pp. 100-110, 1997
4 Jong-Il Park, Sang Hyo Han, Gi Mun Um, Chung Hyun Ahn, 'Virtual Control of Optical Axis for Stereo HDTV,' Proceedings of VCIP 2003, pp. 119-126, July 2003
5 Methodology for the Subjective Assessment of the Quality of Television Pictures, Rec. ITU-R BT. 500, 1994-1997
6 J. S. McVeigh, M. W. Siegel, and A.G. Jordan, 'Algorithm for Automated Eye Strain Reduction in Real Stereoscopic Images and Sequences,' Proc. of SPIE Human Vision and Electronic Imaging, vol. 2657, pp. 307-316, Jan. 1996
7 W.A. IJsselsteijn, P. J. H. Seuntiëns, and L. M. J. Meesters, 'State-of-the-art in Human Factors and Quality Issues of Stereoscopic Broadcast Television,' Delieverable ATTEST/WP5/01, pp. 3-4, August 2002
8 L. Zhang, 'Hierarchical Block-based Disparity estimation using Mean Absolute Difference and Dynamic programming,' Proceedings of International Workshop on Very Low Bit rate Video Coding, pp. 114-118, 2001
9 한국전자통신연구원, 3차원 입체영상(3DTV) 방송중계 시범서비스 과제 최종 보고서, 2002년 12월
10 L. Stelmach, W. J. Tam, D. Meegan, and A. Vincent, 'Stereo Image Quality: Effects of Mixed Spatio-temporal Resolution,' IEEE Trans. on Circuits and Systems for Video Technology, pp. 188-193, 2000
11 W. Blohm, I. P. Beldie, K. Schenke, K. Fazel, and S. Pastoor, 'Stereo Image Representation with Synthetic Depth of Field,' Journal of SID, pp. 307-313, 1997