Patent ID: 11967073
Assignee: AVATAR MEDICAL
Field: Computer technology (Electrical engineering)
Classification: CPC G  A | IPC A  G

Claim 6:
7. A visualization device including a user interface, a display unit, and a processing unit, wherein:
the user interface is configured to acquire a current position of a predetermined user point in a predetermined user coordinate system;
the display unit is configured to display a 3D model forming a three-dimensional representation, in a three-dimensional scene, of at least one portion of a patient, each voxel of the 3D model being associated to a respective pixel of at least one corresponding cross-sectional image of the at least one portion of the patient, each cross-sectional image being associated to a corresponding image cross-section plane, the three-dimensional scene having a corresponding scene coordinate system attached thereto, the three-dimensional scene further including a cursor and at least one display window, each display window lying in a respective display plane having a predetermined equation in the scene coordinate system, each display window being associated to a corresponding window cross-section plane; and
the processing unit is configured to:
compute a current position of the cursor in the scene coordinate system based on the current position of the user point in the user coordinate system;
determine a current observation vector representative of a direction along which the user views the 3D model in the three-dimensional scene;
determine, among said at least one display window, at least one active display window, as the at least one the display window corresponding to a positive value of a scalar product between:
the determined current observation vector; and
a normal vector of the respective display plane oriented opposite the 3D model; and

for each active display window, control the display unit to display, on said active display window, a displayed image based on the corresponding cross-sectional image which:
includes a pixel associated to an active voxel which is the voxel having a position that is the closest to the computed current position of the cursor; and
has the corresponding image cross-section plane that matches the window cross-section plane of the active display window.