Browse > Article
http://dx.doi.org/10.5909/JBE.2012.17.4.670

Picture Quality Control Method for Region of Interest by Using Depth Information  

Kwon, Soon-Kak (Dept. of Computer Software Engineering, Dongeui University)
Park, Yoo-Hyun (Dept. of Computer Software Engineering, Dongeui University)
Publication Information
Journal of Broadcast Engineering / v.17, no.4, 2012 , pp. 670-675 More about this Journal
Abstract
If the region of interest (ROI) is set within the picture of image and video and the high quality is provided in ROI compared to Non ROI, then overall subjective picture quality can be increased. ROI extracted by the color camera only increases the calculation complexity and reduces the extraction accuracy. In this paper, we use depth camera to set the ROI and calculate the object distance from camera, then propose a method that the different picture quality is controlled by depending on the distance of an object. That is, we apply a high quantization step size to the far object, but relatively a low quantization step size to the close object, so better picture quality can be provided. Simulation results show that applying the differential quantization step size to the distance of objects by the proposed method can improve the subjective picture quality.
Keywords
Quantization step size; Region of interest; Depth information; Picture quality control;
Citations & Related Records
연도 인용수 순위
  • Reference
1 L. Tong, K. R. Rao, "Region of Interest Based H.263 Compatible Codec and its Rate Control for Low Bit Rate Video Conferencing", International Symposium on Intelligent Signal Processing and Communication Systems, pp.249-252, Dec. 2005.
2 Y. Liu, Z. G. Li, and Y. C. Soh, "Region-of-Interest Based Resource Allocation for Conversational Video Communication of H.264/AVC", IEEE Trans. Circuit Syst. Video Technology, Vol. 18, No. 1, pp. 134-139, 2008.   DOI   ScienceOn
3 M.-C. Chi, C.-H. Yeh, and M.-J. Chen, "Robust Region-of-Interest Determination Based on User Attention Model through Visual Rhythm Analysis", IEEE Trans. Circuit Syst. Video Technology, Vol. 19, No. 7, pp. 1025-1038, 2009.   DOI   ScienceOn
4 S.-k. Kwon, A. Punchihewa, D. G. Bailey, S.-W. Kim, J. Lee, "Adaptive Simplification of Prediction Modes for H.264 Intra-Picture Coding", IEEE Trans. Broadcasting, Vol. 58, No. 1, pp. 125-129, 2012.   DOI   ScienceOn
5 Y. Zhang, G. Jiang, M. Yu, Y. Yang, Z. Peng, and K. Chen, "Depth Perceptual Region-of-Interest Based Multiview Video Coding", Journal of Visual Communication and Image Representation, Vol. 21, No. 5-6, pp. 498-512, 2010.   DOI   ScienceOn
6 http://www.microsoft.com/en-us/default.aspx
7 http://openni.org
8 JM Reference Software Version 10.2, http://iphome.hhi.de/suehring/tml/download.
9 K. Ugur, K. Andersson, A. Fuldseth, G. Bjontegaard, L. P. Endresen, J. Lainema, A. Hallapuro, J. Ridge, D. Rusanovskyy, C. Zhang, A. Norkin, C. Priddle, T. Rusert, J. Samuelsson, R. Sjoberg, Z. Wu, "High Performance, Low Complexity Video Coding and the Emerging HEVC Standard", IEEE Trans. Circuit Syst. Video Technology, Vol. 20, No. 12, pp.1688-1697, 2010.   DOI   ScienceOn
10 W.-J. Han, J. Min, I.-K. Kim, E. Alshina, A. Alshin, T. Lee, J. Chen, V. Seregin, S. Lee, Y. M. Hong, M.-S. Cheon, N. Shlyakhov, K. McCann, T. Davies, J.-H. Park, "Improved Video Compression Efficiency through Flexible Unit Representation and Corresponding Extension of Coding Tools", IEEE Trans. Circuit Syst. Video Technology, Vol. 20, No. 12, pp.1709-1720, 2010.   DOI   ScienceOn
11 F. Bossen, V. Drugeon, E. Francois, J. Jung, S. Kanumuri, M. Narroschke, H. Sasai, J. Sole, Y. Suzuki, T. K. Tan, T. Wedi, S. Wittmann, P. Yin, Y. Zheng, "Video Coding using a Simplified Block Structure and Advanced Coding Techniques", IEEE Trans. Circuit Syst. Video Technology, Vol. 20, No. 12, pp.1667-1675, 2010.   DOI   ScienceOn
12 H. Song, C.-C. J. Kuo, "A Region-Based H.263+ Codec and its Rate Control for Low VBR Video", IEEE Trans. Multimedia, Vol. 6, No. 3, pp.489-500, 2004.   DOI   ScienceOn
13 S.-k. Kwon, A. Tamhankar, K. R. Rao, "Overview of H.264/MPEG-4 Part 10", Journal of Visual Communications and Image Representation, Vol. 17, No. 2, pp. 186-216, 2006.   DOI   ScienceOn