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Clinical SPECT routine uses tedious manual image evaluation using simplistic region of interest statistical analysis without taking the quantification aspect into account. We introduce a software framework for quantitative analysis of 3D/4D SPECT·CT Tc-99m bone scintigraphy data that incorporates automatic analysis and osseous tissue healthiness classification based on a patient database annotated...
Methods for 2D/3D face recognition typically combine results obtained independently from the 2D and 3D data, respectively. There has not been much emphasis on data fusion at an early stage, even though it is at least potentially more powerful to exploit possible synergies between the two modalities. In this paper, we propose photogeometric features that interpret both the photometric texture and geometric...
We investigated biases in time-activity measurements relevant for quantitative dynamic SPECT/CT imaging when slow-rotating dual-headed gamma camera systems in combination with OSEM-3D (Flash3D) with scatter and attenuation correction are used. The goal was to assess the potential and also the limitations of clinical dual-headed SPECT/CT systems for the quantification of dynamic processes with focus...
An algorithm is proposed for the 3D modeling of static scenes solely based on the range and intensity data acquired by a time-of-flight camera during an arbitrary movement. No additional scene acquisition devices, like inertia sensor, positioning robots or intensity based cameras are incorporated. The current pose is estimated by maximizing the uncentered correlation coefficient between edges detected...
Contactless human-machine-interfaces (HMIs) are an important issue in various applications where a haptic interaction with an input device is not possible or not appropriate. Newly developed Time-of-Flight cameras provide 3D information of the observed scene in real-time at constant lateral resolutions of thousands of pixels. Additionally, a gray-value image of the observed scene is available. Our...
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