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.
Similar content being viewed by others
References
3L Ltd. (1994) C40 Parallel CV1.1.1, March 1994
Anandan P (1989) A computational framework and an alogorithm for the measurement of visual motion. Int J Comput Vision 2: 283–310
Barron JL, Fleet DJ, Beauchemin S (1994) Performance of optical flow techniques Int J Comput Vision 12(1): 43–77
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
Fleet DJ, Jepson AD (1993) Stability and phase information. IEEE Trans PAMI 15(12): 1253–1268
Fleet DJ, Jepson AD, Jenkin M (1991) Phase-based disparity measurement. CVGIP: image understanding 53(2): 198–210
Fleet DJ, Jepson AD (1990) Computation of component image velocity from local phase information. Int J Comput Vision 5(1): 77–104
Gabor D (1946) Theory of communication. J Inst Electr Eng 93 Part III: 429–457
Inoue H (1993) Vision-based robot behavior: testbed for real-world AI Research Proc IJCAI 1: 767–773
Jenkin M, Jepson AD (1988) The measurement of binocular disparity. Computational processes in human vision
Kopecz J, Von Seelen M, Bohrer S, Theimer W (1995) A neural architecture for visual information processing. Int J Comput Vision 16(3)
Nation Engineering Laboratory (1993) TIM-40CFG-RGB V2.0, User manual
Otsu N (1993) Toward flexible intelligence: MITI's new program of real-world computing. Proc IJCAI 1: 786–791
Sanger TD (1988) Stereo disparity computation using Gabor filters. Biol Cybernetics 1(59): 405–418
Sinectoanalysis Inc (1993) Optimized DSP vector library for TMS320C40. Reference manual
Texas Instruments Inc (1993) TMS320C4x, Users guide
Author information
Authors and Affiliations
Rights 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
Issue Date:
DOI: https://doi.org/10.1007/BF01216814