Enhanced optical flow field of left ventricular motion using quasi-Gaussian DCT filter

Slamet Riyadi, Mohd. Marzuki Mustafa, Aini Hussain, Oteh Maskon, Ika Faizura Mohd Nor

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Left ventricular motion estimation is very important for diagnosing cardiac abnormality. One of the popular techniques, optical flow technique, promises useful results for motion quantification. However, optical flow technique often failed to provide smooth vector field due to the complexity of cardiac motion and the presence of speckle noise. This chapter proposed a new filtering technique, called quasi-Gaussian discrete cosine transform (QGDCT)-based filter, to enhance the optical flow field for myocardial motion estimation. Even though Gaussian filter and DCT concept have been implemented in other previous researches, this filter introduces a different approach of Gaussian filter model based on high frequency properties of cosine function. The QGDCT is a customized quasi discrete Gaussian filter in which its coefficients are derived from a selected two-dimensional DCT. This filter was implemented before and after the computation of optical flow to reduce the speckle noise and to improve the flow field smoothness, respectively. The algorithm was first validated on synthetic echocardiography image that simulates a contracting myocardium motion. Subsequently, this method was also implemented on clinical echocardiography images. To evaluate the performance of the technique, several quantitative measurements such as magnitude error, angular error, and standard error of measurement are computed and analyzed. The final motion estimation results were in good agreement with the physician manual interpretation.

Original languageEnglish
Title of host publicationAdvances in Experimental Medicine and Biology
Pages461-469
Number of pages9
Volume696
DOIs
Publication statusPublished - 2011

Publication series

NameAdvances in Experimental Medicine and Biology
Volume696
ISSN (Print)00652598

Fingerprint

Optical flows
Flow fields
Motion estimation
Echocardiography
Discrete cosine transforms
Speckle
Myocardium
Physicians
Research

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

Cite this

Riyadi, S., Mustafa, M. M., Hussain, A., Maskon, O., & Nor, I. F. M. (2011). Enhanced optical flow field of left ventricular motion using quasi-Gaussian DCT filter. In Advances in Experimental Medicine and Biology (Vol. 696, pp. 461-469). (Advances in Experimental Medicine and Biology; Vol. 696). https://doi.org/10.1007/978-1-4419-7046-6_46

Enhanced optical flow field of left ventricular motion using quasi-Gaussian DCT filter. / Riyadi, Slamet; Mustafa, Mohd. Marzuki; Hussain, Aini; Maskon, Oteh; Nor, Ika Faizura Mohd.

Advances in Experimental Medicine and Biology. Vol. 696 2011. p. 461-469 (Advances in Experimental Medicine and Biology; Vol. 696).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Riyadi, S, Mustafa, MM, Hussain, A, Maskon, O & Nor, IFM 2011, Enhanced optical flow field of left ventricular motion using quasi-Gaussian DCT filter. in Advances in Experimental Medicine and Biology. vol. 696, Advances in Experimental Medicine and Biology, vol. 696, pp. 461-469. https://doi.org/10.1007/978-1-4419-7046-6_46
Riyadi S, Mustafa MM, Hussain A, Maskon O, Nor IFM. Enhanced optical flow field of left ventricular motion using quasi-Gaussian DCT filter. In Advances in Experimental Medicine and Biology. Vol. 696. 2011. p. 461-469. (Advances in Experimental Medicine and Biology). https://doi.org/10.1007/978-1-4419-7046-6_46
Riyadi, Slamet ; Mustafa, Mohd. Marzuki ; Hussain, Aini ; Maskon, Oteh ; Nor, Ika Faizura Mohd. / Enhanced optical flow field of left ventricular motion using quasi-Gaussian DCT filter. Advances in Experimental Medicine and Biology. Vol. 696 2011. pp. 461-469 (Advances in Experimental Medicine and Biology).
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