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AssigneeKoninklijke Philips Electrnoics, N.V.
InventorsThomas Deschamps, Laurent Cohen
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The invention concerns a medical imaging station including segmentation means for segmenting at least one imaged object in an image having gray levels, by propagating an edge from at least one initial point positioned in the image on the imaged object. The speed of propagation of the edge depends on said gray levels at each point referred to as a current point and the segmentation means segmenting the image between the points over which the edge passes and the points over which the edge does not pass. According to the invention, the edge propagation means are coupled with means of automatically detecting an emergence of the propagation edge from the imaged object at a current point. Means of locally fixing the speed of propagation at zero at this current point are activated in the event of detection of an emergence of the propagation edge.
A medical imaging station including acquisition means for obtaining images having gray levels, display means for displaying the images, segmentation means for segmenting at least one imaged object in an image, using means of propagating an edge on the points of the image from at least one initial point positioned in the image on the imaged object by point positioning means, a propagation whose speed depends on said gray levels at each point referred to as the current point, the segmentation being effected between the points through which the edge passes and the points through which the edge does not pass, characterized in that the edge propagation means are coupled with means for the automatic detection of emergence of the propagation edge from the imaged object at a current point, means for local fixing of the speed of propagation at zero at this current point being activated in the event of detection of emergence of the propagation edge.
A segmentation device for segmenting at least one imaged object in an image having gray levels, using means of propagating an edge on the points of the image from at least one initial point positioned in the image on the imaged object by point positioning means, a propagation whose speed depends on the said gray levels at each point referred to as a current point, the segmentation being effected between the points passed over by the edge and the points not passed over by the edge, characterized in that the edge propagation means are coupled with means of automatically detecting an emergence of the propagation edge from the imaged object at a current point, means of locally fixing the speed of propagation at zero at this current point being activated in the event of detection of an emergence of the propagation edge.
A method of segmenting an imaged object in an image having gray levels including a step of propagating an edge on the points of the image from at least one initial point positioned in the image on the imaged object in a step of positioning point in the image, a propagation whose speed depends on the said gray levels at each point referred to as a current point, the segmentation being effected between the points passed over by the edge and the points not passed over by the edge, characterized in that the edge propagation step is coupled with a step of automatic detection of an emergence of the propagation edge from the imaged object at a current point, a step of fixing the speed of propagation at zero at the current point being activated in the event of detection of emergence of the propagation edge.
Dependencies are inferred from the claim text.