An Integrated Approach for Downscaling MPEG Video

  • Sudhir Porwal
  • Jayanta Mukherjee
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4338)


Digital video databases are widely available in compressed format. In many applications such as video browsing, picture in picture, video conferencing etc. data transfer at lower bit rate is required. This requires downscaling of the video before transmission. The conventional spatial domain approach for downscaling video is computationally very expensive. The computation can greatly be reduced if downscaling and inverse motion compensation (IMC) are performed in Discrete Cosine Transform (DCT) domain. There are many algorithms in the literature to perform IMC in the DCT domain. In this paper, we propose an efficient integrated technique to perform IMC and downscaling in DCT domain. This new approach results in significant improvement in computational complexity.


Discrete Cosine Transform Motion Vector Video Stream Machine Instruction Discrete Cosine Transform Domain 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. 1.
    Coding of Moving Pictures and Associated Audio for Digital Storage Media up to 1.5 bits/s, ISO/IEC JTC1 CD 11172 (1992)Google Scholar
  2. 2.
    Coding of Moving and Associated Audio. Committee Draft of Standard ISO 11172: ISO/MPEG 90/176 (December 1990)Google Scholar
  3. 3.
    Video Codec for Audio Visual Services at px64 Kbits/s. CCITT Recommendation H. 261 (1990)Google Scholar
  4. 4.
    le Gall, D.: MPEG: A video compression standard for multimedia applications. Commun. ACM 34(4), 47–58 (1991)Google Scholar
  5. 5.
    Dugad, R., Ahuja, N.: A fast scheme for image size change in the compressed domain. IEEE Trans. Circuits Syst. Video Technology 11, 461–474 (2001)CrossRefGoogle Scholar
  6. 6.
    Mukherjee, J., Mitra, S.K.: Image resizing in the compressed domain using subband DCT. IEEE Trans. Circuits Syst. Video Technology 12(7) (July 2002)Google Scholar
  7. 7.
    Mukherjee, J., Mitra, S.K.: Resizing of images in the DCT space by arbitrary factors. In: IEEE Int. Conf. on Image Processing (ICIP), Singapore, pp. 2801–2804 (2004)Google Scholar
  8. 8.
    Mukherjee, J., Mitra, S.K.: Arbitrary resizing of images in DCT space. Communicated to IEE Proc. Vis. Image Signal ProcessGoogle Scholar
  9. 9.
    Chang, S.F., Messerschmitt, D.G.: Manipulation and compositing of MC-DCT compress video. IEEE J. Select. Areas Commun. 13, 1–11 (1995)CrossRefGoogle Scholar
  10. 10.
    Smith, B.C., Rowe, L.: Algorithms for manipulating compressed images. IEEE Comput. Grap. Applicat. Mag. 13, 34–42 (1993)CrossRefGoogle Scholar
  11. 11.
    Hu, Q., Panchanathan, S.: Image/video spatial scalability in compressed domain. IEEE Trans. Ind. Electron. 45, 23–31 (1998)CrossRefGoogle Scholar
  12. 12.
    Merhav, N., Bhaskaran, V.: Fast algorithms for DCT-domain image downsampling and for inverse motion compensation. IEEE Trans. Circuits Syst. Video Technology 7, 468–476 (1997)CrossRefGoogle Scholar
  13. 13.
    Assuncao, P.A.A., Ghanbari, M.: Transcoding of MPEG-2 video in the frequency domain. In: ICASSP 1997, pp. 2633–2636 (1997)Google Scholar
  14. 14.
    Song, J., Yeo, B.-L.: A Fast Algorithm for DCT-Domain Inverse Motion Compensation Based on Shared Information in a Macroblock. IEEE Trans. on Circuits and Systems for Video Technology 10(5) (August 2000)Google Scholar
  15. 15.
    Porwal, S., Mukhopadhyay, J.: A Fast DCT Domain Based Video Downscaling System. In: IEEE Int. Conf. on Acoustics, Speech and Signal Processing (ICASSP), Toulouse, France, pp. 885–888 (2006)Google Scholar
  16. 16.
    Arai, Y., Agui, T., Nakajima, M.: A fast DCT-SQ scheme for images. Trans. IEICE E71(11), 1095 (1998)Google Scholar
  17. 17.
    Shen, B., Sethi, I.K., Vasudev, B.: Adaptive Motion Vector Resampling for Compressed Video Downscaling. IEEE Trans. Circuits Syst. Video Technology 9(6) (September 1999)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Sudhir Porwal
    • 1
  • Jayanta Mukherjee
    • 2
  1. 1.Image Analysis CenterDefence Electronics Applications LaboratoryDehradunIndia
  2. 2.Dept. of Computer ScienceIndian Institute of TechnologyKharagpurIndia

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