Abstract: A computer-implemented method is disclosed for segmenting a binarized document. The method includes extracting connected components from the binarized document and discriminating (for at least one of the connected components) whether it is a text component based on a homogeneity level value. The homogeneity level value is representative of the level of homogeneity within the local region of the connected component. The local region includes the connected component and at least one adjacent connected component. The homogeneity level value is based on at least one value representative of at least one image characteristic parameter determined for the connected component and on at least one value representative of the image characteristic parameter of the at least one adjacent connected component.

Abstract: A computer-implemented method is disclosed for segmenting a binarized document. The method includes extracting connected components from the binarized document and discriminating (for at least one of the connected components) whether it is a text component based on a homogeneity level value. The homogeneity level value is representative of the level of homogeneity within the local region of the connected component. The local region includes the connected component and at least one adjacent connected component. The homogeneity level value is based on at least one value representative of at least one image characteristic parameter determined for the connected component and on at least one value representative of the image characteristic parameter of the at least one adjacent connected component.

Abstract: A method for determining a representation of multichannel radio-frequency, RF, signals acquired from a physical environment, involves a transmitter for emitting ultrasound excitation pressure waves, a propagation medium containing non-uniformities reflecting the pressure waves, and a receiver comprising one or more elements for recording the multichannel RF signals from the reflected pressure waves. The method comprises determining a set of basis functions for representing the received reflected signals by deriving a model, modelling the propagation medium bounded by said transmitter and the receiver, modelling individual responses of the non-uniformities to the excitation pressure waves, deriving the set of basis functions from said individual responses by simulating response to excitation of the non-uniformities in the propagation medium, and determining a representation of the recorded multichannel RF signals using the set of basis functions obtained with the model.