DEVICE AND METHOD FOR ANALYZING THE CORRELATION BETWEEN AN IMAGE AND ANOTHER IMAGE OR BETWEEN AN IMAGE AND A VIDEO
First Claim
1. An apparatus for analyzing a correlation between images, comprising:
- a feature data generation unit for determining feature points of each image, and generating feature data including pieces of feature point orientation information for the respective feature points; and
a relation analysis unit for analyzing a correlation between an image and another image using the feature data generated by the feature data generation unit,wherein the relation analysis unit comprises;
a corresponding feature point determination unit for determining pairs of corresponding feature points between the images to be compared using the feature data generated by the feature data generation unit; and
a reliability estimation unit for estimating reliability of analysis of a correlation between the images, based on the feature point orientation information of the feature points included in the feature point pairs determined by the corresponding feature point determination unit,wherein the reliability estimation unit estimates the reliability of the analysis of the relation between the images, based on a probability density function for estimated values of differences between orientations of the feature points included in the respective feature point pairs.
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Abstract
The present invention relates to a device and method for analyzing the correlation between an image and another image or between an image and a video. The device for analyzing the correlation between images and the method for using same include: a feature data generating unit for determining a feature point of an image and generating feature data which includes feature point orientation information on each determined feature point; and a relation analyzing unit for analyzing the correlation between an image and another image using feature data generated from the feature data generating unit. The relation analyzing unit includes: a unit for determining corresponding feature points, which determines a pair of corresponding feature points between compared images using feature data generated from the feature data generating unit; and a reliability estimating unit for estimating the reliability of the analysis of the relation between images on the basis of feature point orientation information on a feature point, in pairs of feature points determined by the unit for determining corresponding feature points. According to the present invention, provided are a device and method for quickly and efficiently analyzing a correlation, such as whether or not there is a similarity between an image and another image or between an image and a video, wherein said video includes an image, or a frame of said video corresponds to an image.
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Citations
28 Claims
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1. An apparatus for analyzing a correlation between images, comprising:
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a feature data generation unit for determining feature points of each image, and generating feature data including pieces of feature point orientation information for the respective feature points; and a relation analysis unit for analyzing a correlation between an image and another image using the feature data generated by the feature data generation unit, wherein the relation analysis unit comprises; a corresponding feature point determination unit for determining pairs of corresponding feature points between the images to be compared using the feature data generated by the feature data generation unit; and a reliability estimation unit for estimating reliability of analysis of a correlation between the images, based on the feature point orientation information of the feature points included in the feature point pairs determined by the corresponding feature point determination unit, wherein the reliability estimation unit estimates the reliability of the analysis of the relation between the images, based on a probability density function for estimated values of differences between orientations of the feature points included in the respective feature point pairs. - View Dependent Claims (3, 4, 5, 7, 10)
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2. (canceled)
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6. (canceled)
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8-9. -9. (canceled)
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11-12. -12. (canceled)
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13. A method of analyzing a correlation between images, comprising:
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a first step of determining feature points of each image, and generating feature data including pieces of feature point orientation information for the respective feature points; and a second step of analyzing a correlation between an image and another image using the feature data generated at the first step, wherein the second step comprises; 2-1) determining pairs of corresponding feature points between the images to be compared using the generated feature data; and 2-2) estimating reliability of analysis of a correlation between the images, based on the feature point orientation information of the feature points, and wherein the step of 2-2 is configured to estimate the reliability of the analysis of the relation between the images, based on a probability density function for estimated values of differences between orientations of the feature points included in the respective feature point pairs.
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14. An apparatus for analyzing a correlation between an image and a video, comprising:
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an image feature data generation unit for determining feature points of an image and generating image feature data including pieces of feature point orientation information for the respective feature points; a video feature data generation unit for determining, for a video, feature points for one or more of frames constituting the video, and generating pieces of frame-based image feature data including pieces of feature point orientation information for the respective frame-based feature points, thus generating video feature data; and a relation analysis unit for comparing the image feature data with the video feature data and then analyzing a correlation between the image and the video, wherein the relation analysis unit comprises; a candidate selection unit for determining a matching video by comparing the image feature data with the pieces of frame-based image feature data of the video feature data, and determining one or more of frames constituting the determined video, or for determining one or more matching frames by comparing the image feature data with the pieces of frame-based image feature data of the video feature data; a corresponding feature point determination unit for determining pairs of corresponding feature points between the image and the one or more frames determined by the candidate selection unit, based on the image feature data of the image and pieces of image feature data of the determined frames; and a reliability estimation unit for estimating reliability of analysis of the correlation between the image and the video based on pieces of feature point orientation information of feature points included in the feature point pairs determined by the corresponding feature point determination unit, wherein the reliability estimation unit estimates the reliability of the analysis of the relation between the image and the video, based on a probability density function for estimated values of differences between orientations of the feature points included in the respective feature point pairs. - View Dependent Claims (18)
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15-17. -17. (canceled)
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19-27. -27. (canceled)
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28. A method of analyzing a correlation between an image and a video, comprising:
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a first step of determining feature points of an image and generating image feature data including pieces of feature point orientation information for the respective feature points; a second step of determining, for a video, feature points for one or more of frames constituting the video, and generating pieces of frame-based image feature data including pieces of feature point orientation information for the respective frame-based feature points, thus generating video feature data; and a third step of comparing the image feature data with the video feature data and then analyzing a correlation between the image and the video, wherein the third step comprises the steps of; 3-1) determining a matching video by comparing the image feature data with the pieces of frame-based image feature data of the video feature data, and determining one or more of frames constituting the determined video, or for determining one or more matching frames by comparing the image feature data with the pieces of frame-based image feature data of the video feature data; 3-2) determining pairs of corresponding feature points between the image and the one or more frames determined at 3-1), based on the image feature data and pieces of image feature data of the determined frames; and 3-3) estimating reliability of analysis of the correlation between the image and the video based on pieces of feature point orientation information of feature points included in the feature point pairs determined at 3-2), wherein the step of 3-3) is configured to estimate the reliability of the analysis of the relation between the image and the video, based on a probability density function for estimated values of differences between orientations of the feature points included in the respective feature point pairs.
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Specification