Boundary localization of an internal organ of a subject for providing assistance during surgery

A surgical assistive method, comprising:

• capturing, by a surgical image-capture device, a sequence of video frames of one or more internal organs of a subject based on insertion of the surgical image-capture device in a body of the subject;
• selecting, by an organ boundary localization (OBL) circuit, a test video frame from the captured sequence of video frames;
• deriving, by the OBL circuit, a first global region boundary of an internal organ of interest by integration of an appearance likelihood result, a global segmentation result, and a global edge detection result associated with the internal organ of interest in the selected test video frame;
• determining, by the OBL circuit, a plurality of local region boundaries for a plurality of local sub regions of the internal organ of interest in the selected test video frame, based on a local segmentation result and a local edge detection result of each of the plurality of local sub regions of the internal organ of interest, wherein the plurality of local region boundaries are determined with guidance from the derived first global region boundary of the internal organ of interest;
• generating, by the OBL circuit, based on the determined plurality of local region boundaries and the first global region boundary, a second global region boundary for the internal organ of interest in the test video frame of the captured sequence of video frames;
• and
• localizing, by the OBL circuit, the internal organ of interest within the body of the subject in a surgery, based on the generated second global region boundary for the internal organ of interest.