Imaging apparatus and method of obtaining a roll angle of the imaging apparatus, and correcting detected roll angle
First Claim
Patent Images
1. An imaging apparatus, comprising:
- an image pickup device;
a device that obtains an image from the image pickup device;
an acceleration sensor that detects a roll angle of the acceleration sensor, wherein the acceleration sensor detects a reference roll angle when the imaging apparatus is disposed at a horizontal position, a longitudinal photographing of +90 degrees, and a longitudinal photographing of −
90 degrees, respectively;
a device that calculates a reference roll angle of the image pickup device by using a reference image from the image pickup device when the imaging apparatus is disposed at the horizontal position, the longitudinal photographing of +90 degrees, and the longitudinal photographing of −
90 degrees, respectively;
a device that calculates a first difference as a first relative roll angle between the reference roll angle of the image pickup device when the imaging apparatus is disposed at the horizontal position and the reference roll angle of the sensor when the imaging apparatus is disposed at the horizontal position, a second difference as a second relative roll angle between the reference roll angle of the image pickup device when the imaging apparatus is disposed at the longitudinal photographing of +90 degrees and the reference roll angle of the sensor when the imaging apparatus is disposed at the longitudinal photographing of +90 degrees, and a third difference as a third relative roll angle between the reference roll angle of the image pickup device when the imaging apparatus is disposed at the longitudinal photographing of −
90 degrees and the reference roll angle of the sensor when the imaging apparatus is disposed at the longitudinal photographing of −
90 degrees; and
a device that corrects the detected roll angle of the acceleration sensor by using one of the first, second and third relative roll angles.
1 Assignment
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Accused Products
Abstract
An imaging apparatus includes an image pickup device, a device that obtains an image from the image pickup device, a sensor that detects a roll angle of the sensor, wherein the sensor detects a reference roll angle of the sensor when the imaging apparatus is disposed at a predetermined roll angle, a device that calculates a reference roll angle of the image pickup device by using a reference image from the image pickup device when the imaging apparatus is disposed at the predetermined roll angle and a device that corrects a roll angle of the sensor by calculating a relative roll angle from the reference roll angle of the image pickup device and the reference roll angle of the sensor.
8 Citations
7 Claims
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1. An imaging apparatus, comprising:
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an image pickup device; a device that obtains an image from the image pickup device; an acceleration sensor that detects a roll angle of the acceleration sensor, wherein the acceleration sensor detects a reference roll angle when the imaging apparatus is disposed at a horizontal position, a longitudinal photographing of +90 degrees, and a longitudinal photographing of −
90 degrees, respectively;a device that calculates a reference roll angle of the image pickup device by using a reference image from the image pickup device when the imaging apparatus is disposed at the horizontal position, the longitudinal photographing of +90 degrees, and the longitudinal photographing of −
90 degrees, respectively;a device that calculates a first difference as a first relative roll angle between the reference roll angle of the image pickup device when the imaging apparatus is disposed at the horizontal position and the reference roll angle of the sensor when the imaging apparatus is disposed at the horizontal position, a second difference as a second relative roll angle between the reference roll angle of the image pickup device when the imaging apparatus is disposed at the longitudinal photographing of +90 degrees and the reference roll angle of the sensor when the imaging apparatus is disposed at the longitudinal photographing of +90 degrees, and a third difference as a third relative roll angle between the reference roll angle of the image pickup device when the imaging apparatus is disposed at the longitudinal photographing of −
90 degrees and the reference roll angle of the sensor when the imaging apparatus is disposed at the longitudinal photographing of −
90 degrees; anda device that corrects the detected roll angle of the acceleration sensor by using one of the first, second and third relative roll angles. - View Dependent Claims (2, 3, 4)
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5. A method of obtaining a roll angle of an imaging apparatus, comprising:
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providing the imaging apparatus with an image pickup device;
a device that obtains an image from the image pickup device;
an acceleration sensor that detects a roll angle of the acceleration sensor, wherein the acceleration sensor detects a reference roll angle when the imaging apparatus is disposed at a horizontal position, a longitudinal photographing of +90 degrees, and a longitudinal photographing of −
90 degrees, respectively;
a device that calculates a reference roll angle of the image pickup device by using a reference image from the image pickup device when the imaging apparatus is disposed at the horizontal position, the longitudinal photographing of +90 degrees, and the longitudinal photographing of −
90 degrees, respectively;
a device that calculates a first difference as a first relative roll angle between the reference roll angle of the image pickup device when the imaging apparatus is disposed at the horizontal position and the reference roll angle of the sensor when the imaging apparatus is disposed at the horizontal position, a second difference as a second relative roll angle between the reference roll angle of the image pickup device when the imaging apparatus is disposed at the longitudinal photographing of +90 degrees and the reference roll angle of the sensor when the imaging apparatus is disposed at the longitudinal photographing of +90 degrees, and a third difference as a third relative roll angle between the reference roll angle of the image pickup device when the imaging apparatus is disposed at the longitudinal photographing of −
90 degrees and the reference roll angle of the sensor when the imaging apparatus is disposed at the longitudinal photographing of −
90 degrees; and
a device that corrects the detected roll angle of the acceleration sensor by using one of the first, second and third relative roll angles;obtaining an image from the image pickup device; detecting a roll angle of the sensor; calculating the reference roll angles of the image pickup device; and correcting the roll angle of the sensor. - View Dependent Claims (6, 7)
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Specification
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Current AssigneeRicoh Company Limited
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Original AssigneeRicoh Company Limited
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InventorsMatsutani, Atsushi
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Primary Examiner(s)Ye, Lin
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Assistant Examiner(s)CAMARGO, MARLY S.B.
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Application NumberUS12/667,661Publication NumberTime in Patent Office1,511 DaysField of Search348/208.3, 348/208.4, 348/208.2, 348/208.13, 348/180, 348/187, 348744-747, 348/222.1, 34820899-20816, 702/85, 702/104, 702/108, 702/111, 702/116, 396/52, 396/53, 396/55, 396/370, 396361-363US Class Current348/208.4CPC Class CodesG03B 17/18 Signals indicating conditio...G03B 17/56 Accessories carrying-cases ...G03B 2217/18 Signals indicating conditio...G03B 43/00 Testing correct operation o...H04N 17/002 for television camerasH04N 23/633 for displaying additional i...H04N 23/68 for stable pick-up of the s...
