Identification and velocity computation of multiple moving objects in images

Mahmoud, Sabri A.; Afifi, M.; Green, R.J.

doi:10.1109/7.55552

Search citation statements

Order By: Relevance

Paper Sections

Select...

Introduction1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

1991

Publication Types

Select...

Article1

Other1

Relationship

Self Cite0

Independent2

Authors

Journals

Cited by 2 publications

(1 citation statement)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…23. In this article, a comparison between the two techniques that are based on the use of FFT [20] and FHT [23] transforms in motion analysis is presented. FFT and FHT are applied to the image sequence, followed by a peak-detection procedure.…”

Section: Introductionmentioning

confidence: 99%

Use of fourier and hartley transforms in motion estimation: A comparative study

Mahmoud

1991

Int J Imaging Syst Tech

View full text Add to dashboard Cite

A comparison between the use of Fourier and Hartley transforms for motion estimation of multiple moving objects in image sequences is presented. The spectrum of the two transforms show that the temporal frequencies at the peaks (of the spectrum) is related to the velocity of the moving objects. The analysis shows that the Hartley technique is faster and requires less memory space than the Fourier technique. However, it gives the velocity of the moving objects but not the direction. The Fourier spectrum, on the other hand, gives the velocity and direction. An efficient implementation is possible by using the Hartley transform to estimate the temporal frequencies of the peaks and hence the velocities. The fast Fourier transform is then used to compute the spectrum at those peaks. The direction is easily found from the Fourier spectrum by reversing the sign of the temporal frequency corresponding to the peak.

show abstract

Section: Introductionmentioning

confidence: 99%