Processing strategies for high-resolution GPR concrete inspections
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Complex wavelet transforms offer the opportunity to perform directional and coherent processing based on the local magnitude and phase of signals and images. Although denoising, segmentation, and image enhancement are significantly improved using complex w ...
The invention concerns a device (10) for measuring one or several navigation parameters in a large-size navigating craft, comprising a parameter sensing and measuring element (11) and at least means for displaying (12) said parameter, connected by electrom ...
We have examined the diameter response of rat femoral artery segments in the presence and absence of endothelium to changes in flow rate. The segments were isolated, mounted on microcannulae, maintained at 37 degrees C, and perfused at 90 mmHg with Tyrode' ...
Information processing in neocortex can be very fast, indicating that neuronal ensembles faithfully transmit rapidly changing signals to each other. Apart from signal-to-noise issues, population codes are fundamentally constrained by the neuronal dynamics. ...
A procedure is described for the selective removal of NMR signals assocd. with coupling consts. (J) exceeding a lower limit Jmin. The procedure is called "low-pass J filtering" since it leaves signals assocd. with small J couplings essentially unaffected ...
The effects of flow and flow changes on arterial diameter were investigated in vitro on isolated rat femoral arteries. Segments of femoral arteries were excised, mounted on microcannulas, and perfused with Tyrode's solution (37 degrees C). Perfusion pressu ...
Aliasing artifacts in images are visually very disturbing. Therefore, most imaging devices apply a low-pass filter before sampling. This removes all aliasing from the image, but it also creates a blurred image. Actually, all the image information above hal ...
