Wyniki wyszukiwania - BazTech

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Dopasowanie obrazów podczerwieni przy pomocy sekwencji obrazów widzialnych

Suchowirski M., Nowakowski A.

Pomiary Automatyka Kontrola

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2009

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R. 55, nr 11

927-930

PL

W pracy przedstawiono algorytm stabilizacji obrazów badanego obiektu poprzez transformacje sekwencji obrazów zarejestrowanych w świetle widzialnym. Zaprezentowano koncepcję, w jaki sposób wykorzystać uzyskane dane transformacji do korekty i stabilizacji rejestrowanych synchronicznie sekwencji obrazów podczerwieni, w celu poprawy dokładności i efektywności metody aktywnej termografii dynamicznej (ADT). Procedura ta jest szczególnie istotna w badaniach termograficznych przy obserwacji bijącego serca w trakcie interwencji kardiochirurgicznych, ale generalnie pozwala na wyraźną poprawę jakości danych ADT w diagnostyce medycznej.

EN

Algorithm of tested object visual image stabilization via transformation of image sequences is shown with the aim of image matching. A concept how to use the transformation data for correction and matching of IR-thermal images in active dynamic thermography (ADT) is presented. The procedure improves significantly accuracy and efficiency of ADT measurements. The method is especially important for observation of the beating heart during cardiosurgery interventions, but is of general use in ADT medical diagnostics.

2

Applications of image registration in parametric imaging

Rumiński J., Suchowirski M.

Journal of Medical Informatics & Technologies

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2006

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Vol. 10

47--53

EN

Applications of image registration in parametric imaging are investigated. The manual and automatic image registration methods have been used for image to image registration in sequences to correct movement artefacts in reconstructed parametric objects. Additionally the registration methods were used for multimodal visualisation of structural and parametric objects. The achieved results proved that the automatic image to image registration, for motion mechanisms correction, in the parametric model improves the quality of images. The multimodal visualisation of structural MRI images and parametric DSC-MRI images, enables to correlate the local dynamic changes with all morphological features.

3

Registration and normalization of MRI/PET images

Rumiński J., Suchowirski M.

Journal of Medical Informatics & Technologies

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2005

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Vol. 9

159--166

EN

Parametric imaging is more and more popular in dynamic brain studies. It enables to quantitatively or semi-quantitatively estimate physiological state and processes in brain. Parametric images represent spatial distribution of parameter values calculated for chosen mathematical model of the process or object. This work compares different methods of geometrical transformations for image registration and normalization. Appropriate method for image registration and normalization (in reference to atlases) is extremely important for common visualization of structural and parametric images in MRI and PET studies. Rigid and elastic geometrical transformations are implemented and compared. Additionally Delaunay triangulation and image morphing methods are used. Manual and proposed automatic registration and normalization methods are presented and compared based on MRI/PET and Talairach atlas images. Concluding, the proposed automatic image normalization method is accurate and using the combination of Delaunay and morphing methods can produce even better results.