Video metadata correction apparatus and method
First Claim
1. A video metadata correction apparatus, comprising:
- a first video metadata storage to store azimuth angles as sensor information synchronized with video;
a section identification unit to identify a section including incorrect azimuth angle based on azimuth angle difference calculated from said azimuth angles stored in said first video metadata storage and a horizontal distance extracted from said video, wherein said horizontal distance is a feature value corresponding to change of said video with respect to time and follows change of said azimuth angle difference with respect to time while said azimuth angles are correctly measured; and
a corrector to correct said azimuth angle in the identified section based on said horizontal distance or a second video feature value, which correlates with information concerning said azimuth angle and is extracted from said video, and store the corrected azimuth angle into a second video metadata storage.
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Abstract
This invention is to provide a technique for properly correcting video metadata related to and synchronized with the video. This video metadata correction apparatus includes: a section identification unit that identifies a section including incorrect video metadata based on information concerning video metadata in a first video metadata storage for storing the information concerning the video metadata as sensor information synchronized with video and a first video feature value, which correlates with the information concerning the video metadata and is extracted from the video; and a corrector that corrects the video metadata in the identified section based on the first video feature value or a second video feature value, which correlates with the information concerning the video metadata and is extracted from the video. In this manner, only an incorrectly measured part can be corrected in an effective manner.
5 Citations
10 Claims
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1. A video metadata correction apparatus, comprising:
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a first video metadata storage to store azimuth angles as sensor information synchronized with video; a section identification unit to identify a section including incorrect azimuth angle based on azimuth angle difference calculated from said azimuth angles stored in said first video metadata storage and a horizontal distance extracted from said video, wherein said horizontal distance is a feature value corresponding to change of said video with respect to time and follows change of said azimuth angle difference with respect to time while said azimuth angles are correctly measured; and a corrector to correct said azimuth angle in the identified section based on said horizontal distance or a second video feature value, which correlates with information concerning said azimuth angle and is extracted from said video, and store the corrected azimuth angle into a second video metadata storage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A video metadata correction method, comprising:
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identifying a section including incorrect azimuth angle based on azimuth angle difference calculated from said azimuth angles stored in a first video metadata storage and a first horizontal distance extracted from a video, wherein said first video metadata storage stores said azimuth angles as sensor information synchronized with said video, and said horizontal distance is a feature value corresponding to change of said video with respect to time and follows change of said azimuth angle difference with respect to time while said azimuth angles are correctly measured; correcting said azimuth angle in the identified section based on said horizontal distance or a second video feature value, which correlates with information concerning said azimuth angle and is extracted from said video; and storing the corrected azimuth angle into a second video metadata storage.
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10. A computer-readable storage medium storing a video metadata correction program, said video metadata correction program causing a computer to execute a process comprising:
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identifying a section including incorrect azimuth angle based on azimuth angle difference calculated from said azimuth angles stored in a first video metadata storage and a first horizontal distance extracted from a video, wherein said first video metadata storage stores said azimuth angles as sensor information synchronized with said video, and said horizontal distance is a feature value corresponding to change of said video with respect to time and follows change of said azimuth angle difference with respect to time while said azimuth angles are correctly measured; correcting said azimuth angle in the identified section based on said horizontal distance or a second video feature value, which correlates with information concerning said azimuth angle and is extracted from said video; and storing the corrected azimuth angle into a second video metadata storage.
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Specification