Proceedings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (IEEE Cat. No.0
DOI: 10.1109/iembs.2003.1279459
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M-mode echocardiography image and video segmentation based on am-fm demodulation techniques

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Cited by 12 publications
(7 citation statements)
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“…In M-mode echocardiography images (or videos), high frequency modulation components are found in the vertical direction (changes in the images contrast), whereas frequency modulation in the horizontal direction is less significant. This observation was also utilized in [8], where an AM-FM demodulation was proposed, to track the wall boundaries of the heart. A filter was adaptively selected, which emphasizes the image's contrast change level at a given region of the image, to track the wall's boundaries.…”
mentioning
confidence: 99%
“…In M-mode echocardiography images (or videos), high frequency modulation components are found in the vertical direction (changes in the images contrast), whereas frequency modulation in the horizontal direction is less significant. This observation was also utilized in [8], where an AM-FM demodulation was proposed, to track the wall boundaries of the heart. A filter was adaptively selected, which emphasizes the image's contrast change level at a given region of the image, to track the wall's boundaries.…”
mentioning
confidence: 99%
“…The AM-FM (amplitude modulated, frequency modulated) modulation image representation has been successfully employed to segment images in a variety of scenarios [11], [12], [13], where the AM-FM structures were intrinsic to the analyzed image. In contrast, we impose artificial AM-FM structures in the form of opaque markers in the scene; for the scope of this paper, the scene is a given structure placed onto a shake table (see Figures 2(a) and 2(b)).…”
Section: Tracking Am-fm Markersmentioning
confidence: 99%
“…Если на низких частотах вибрация и шум содержат гармоники, проявляющиеся в спектре сигнала, то на высоких частотах (ВЧ) сигнал является случайным и в его спектре редко проявляются гармонические составляющие резонансные составляющие собственных колебаний. При спектральном анализе флуктуаций энергии вибрации в спектре выпрямленного сигнала гармоники обнаруживаются тогда, когда мощность ВЧ компонент вибрации периодически изменяется, формируя амплитудно-модулированный (АМ) сигнал [1][2][3][4]. В этом случае спектральный анализ огибающей вибрации или шума увеличивает объем диагностической информации, позволяющий обнаруживать дефекты на начальной стадии развития [5][6].…”
Section: Introductionunclassified