Skip to main content
Log in

Real-time parallel computation of disparity and optical flow using phase difference

  • Published:
Machine Vision and Applications Aims and scope Submit manuscript

Abstract

A phase-difference-based algorithm for disparity and optical flow estimation is implemented on a TI-C40-based parallel DSP system. The module performs real-time computation of disparity maps on images of size 128 × 128 pixels and computation of optical flows on images of size 64 × 64 pixels. This paper describes the algorithm and its parallel implementation. Processing times required for the computation of disparity maps and velocity fields and measures of the algorithm's performance are reported in detail.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. 3L Ltd. (1994) C40 Parallel CV1.1.1, March 1994

  2. Anandan P (1989) A computational framework and an alogorithm for the measurement of visual motion. Int J Comput Vision 2: 283–310

    Google Scholar 

  3. Barron JL, Fleet DJ, Beauchemin S (1994) Performance of optical flow techniques Int J Comput Vision 12(1): 43–77

    Google Scholar 

  4. Daugmann JG (1985) Representation issues and local filter models of two-dimensional spatial visual encoding. In: Rose D, Dobson VG (eds) Model of the visual cortex. Wiley, New York

    Google Scholar 

  5. Fleet DJ, Jepson AD (1993) Stability and phase information. IEEE Trans PAMI 15(12): 1253–1268

    Google Scholar 

  6. Fleet DJ, Jepson AD, Jenkin M (1991) Phase-based disparity measurement. CVGIP: image understanding 53(2): 198–210

    Google Scholar 

  7. Fleet DJ, Jepson AD (1990) Computation of component image velocity from local phase information. Int J Comput Vision 5(1): 77–104

    Google Scholar 

  8. Gabor D (1946) Theory of communication. J Inst Electr Eng 93 Part III: 429–457

    Google Scholar 

  9. Inoue H (1993) Vision-based robot behavior: testbed for real-world AI Research Proc IJCAI 1: 767–773

    Google Scholar 

  10. Jenkin M, Jepson AD (1988) The measurement of binocular disparity. Computational processes in human vision

  11. Kopecz J, Von Seelen M, Bohrer S, Theimer W (1995) A neural architecture for visual information processing. Int J Comput Vision 16(3)

  12. Nation Engineering Laboratory (1993) TIM-40CFG-RGB V2.0, User manual

  13. Otsu N (1993) Toward flexible intelligence: MITI's new program of real-world computing. Proc IJCAI 1: 786–791

    Google Scholar 

  14. Sanger TD (1988) Stereo disparity computation using Gabor filters. Biol Cybernetics 1(59): 405–418

    Google Scholar 

  15. Sinectoanalysis Inc (1993) Optimized DSP vector library for TMS320C40. Reference manual

  16. Texas Instruments Inc (1993) TMS320C4x, Users guide

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Valentinotti, F., Di Caro, G. & Crespi, B. Real-time parallel computation of disparity and optical flow using phase difference. Machine Vis. Apps. 9, 87–96 (1996). https://doi.org/10.1007/BF01216814

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01216814

Key words

Navigation