Marker generation device, marker generation detection system, marker generation detection device, marker, marker generation method, and program
AssigneeNEC Corporation
InventorNoboru Nakajima
Life of this patent
Estimating the term…
Abstract
Provided is a marker generation device which has a singular feature selection means and a marker pattern generation means. The singular feature selection means extracts feature points from an image, indicates the feature points in a predetermined space, and selects, as singular features, a plurality of parts where the number of feature points is equal to or less than a predetermined number in the space. The marker pattern generation means generates a plurality of kinds of marker patterns with the use of the whole or a part of the plurality of singular features.
Claims22
A marker generation device comprising:
- a unique feature selector that selects, in a predetermine space in which feature points extracted from an image are displayed, portions of said predetermine space in which the number of said feature points is equal to or less than a predetermined number in a plural number as unique features;
- and
- a marker pattern generator that generates plural kinds of marker patterns by employing the whole or one part of said plurality of the unique features.
A marker generation detection system comprising a marker generation device and a marker detection device:
- wherein said marker generation device comprises:
- a first video image inputting unit that inputs an image;
- a first arranging unit that extracts feature points from said image inputted by this first video image inputting unit;
- and displays these extracted feature points onto a predetermined space;
- a unique feature selector that selects as unique features portions of said space in which the number of said feature points is equal to or less than a predetermined number;
- and
- a marker generator that generates plural kinds of marker patterns by employing said unique features;
- and
- wherein said marker detection device comprises:
- a marker storage that stores said plural kinds of the marker patterns;
- a second video image inputting unit that inputs the image;
- a second arranging unit that extracts the feature points based upon said image inputted by this second video image inputting unit, and displays these extracted feature points onto the predetermined space;
- and
- a collating unit that determines whether or not an arrangement of the unique feature based upon said marker pattern exists in an arrangement of a feature point group displayed onto said predetermined space.
A marker generation detection device comprising:
- a first video image inputting unit that inputs an image;
- a first arranging unit that extracts feature points from said image inputted by this first video image inputting unit, and displays these extracted feature points onto a predetermined space;
- a unique feature selector that selects as unique features portions of said space in which the number of said feature points is equal to or less than a predetermined number;
- a marker generator that generates plural kinds of marker patterns by employing said unique features;
- a marker storage that stores said marker patterns;
- a second video image inputting unit that inputs the image;
- a second arranging unit that extracts the feature points based upon said image inputted by this second video image inputting unit, and displays these extracted feature points onto the predetermined space;
- and
- a collating unit that determines whether or not an arrangement of the unique feature based upon said marker pattern exists in an arrangement of a feature point group displayed onto said predetermined space.
A marker generated in plural kinds by selecting, in a predetermined space onto which feature points extracted for each image are displayed, portions in which the number of said feature points are equal to or less than a predetermined number as unique features, and employing these selected unique features.
A marker generation method comprising the steps of:
- inputting an image;
- extracting feature points from said image;
- displaying said feature points onto a predetermined space;
- selecting as unique features portions of said space in which the number of said feature points is equal to or less than a predetermined number in a plural number;
- and
- generating plural kinds of marker patterns by employing the whole or one part of said plurality of the unique features.
A non-transitory computer readable storage medium storing a marker generation program for causing an information processing device to execute the processes of:
- inputting an image;
- extracting feature points from said image;
- displaying said feature points onto a predetermined space;
- selecting as unique features portions of said space in which the number of said feature points is equal to or less than a predetermined number in a plural number;
- and
- generating plural kinds of marker patterns by employing the whole or one part of said plurality of the unique features.
Dependencies are inferred from the claim text.