FIELD: physics.
SUBSTANCE: system (100) for determining feedback on a three-dimensional location of a pointer in a three-dimensional region of image data, the system having: a display unit (110) for computing a view of the three-dimensional region for displaying on a display; a pointer unit (115) for computing a two-dimensional location of the pointer on the view of the three-dimensional region, based on a pointer location input; a location unit (120) for computing a three-dimensional location in the three-dimensional region, based on a two-dimensional location on the view of the three-dimensional region; and a shadow unit (125) for determining a set of two-dimensional locations for displaying a shadow on the view of the three-dimensional region, wherein the set of two-dimensional locations for displaying the shadow comprises the two-dimensional location of the pointer on the view of the three-dimensional region, and wherein a set of three-dimensional locations, computed based on the set of two-dimensional locations for displaying the shadow, is connected. Typically, the connected set of possible three-dimensional locations having the three-dimensional location of the pointer is included in a structure indicated by the pointer.
EFFECT: increased clarity and reduced ambiguity of indicating a three-dimensional location on the structure.
11 cl, 7 dwg
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Authors
Dates
2013-04-10—Published
2007-09-24—Filed