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This work deals with the correlation between high accurate geometric parameters of a free-swimming fish in a tank, obtained by image processing, with the associated 20–140 kHz wideband sonar echo acquired simultaneously. Variations in terms of Target Strength and normalized spectral energy are studied for three species of fish, perch, roach and char,(More)
In the case of non simultaneous acquisitions of stereoscopic images, an object motion biases the 3D visualisation or reconstruction. We propose a method in order to find the interpolated image between two successive frames. It supposes that the motion locally corresponds to a translation. It works in the frequential domain and uses the phase information of(More)
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