Method and apparatus for identifying local features
AssigneeVidinoti SA
InventorsAlireza Ghasemi, Laurent Rime, Martin Vetterli
Life of this patent
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Abstract
A method of local feature identification, comprising the steps of: retrieving data representing a lightfield (101); forming an epipolar volume (V) from the retrieved data; applying a transform to epipolar planes retrieved from said epipolar volume, so as to represent said epipolar planes in a new space (106); identifying a plurality of epipolar lines (107); identifying local features (fp) based on at least some of said epipolar lines (108).
Claims27
A method of local feature identification and description, comprising the steps of:
- retrieving data representing a lightfield (101);
- forming an epipolar volume (V) from the retrieved data;
- applying a transform to epipolar planes retrieved from said epipolar volume, so as to represent said epipolar planes in a new space (106);
- identifying a plurality of epipolar lines (107);
- identifying local features (fp) based on at least some of said epipolar lines (108).
An apparatus for identifying local features in lightfield representing data, comprising a lightfield data retrieving device (2) for retrieving data representing a lightfield;
- and data processing means programmed for:
- forming an epipolar volume (V) from the retrieved data;
- applying a transform to epipolar planes retrieved from said epipolar volume, so as to represent said epipolar planes in a new space;
- identifying a plurality of epipolar lines (l);
- identifying local features (fp) based on at least some of said epipolar lines.
A tangible data carrier comprising program code arranged for causing a processor to carry out a method of, local feature identification and description, when said processor executes said program code, said method of local feature identification and description, comprising the steps of:
- retrieving data representing a lightfield (101);
- forming an epipolar volume (V) from the retrieved data;
- applying a transform to epipolar planes retrieved from said epipolar volume, so as to represent said epipolar planes in a new space (106);
- identifying a plurality of epipolar lines (107);
- identifying local features (fp) based on at least some of said epipolar lines (108).
Dependencies are inferred from the claim text.