DEVICE, METHOD AND PROGRAM FOR DETERMINING OBSTACLE WITHIN IMAGING RANGE DURING IMAGING FOR STEREOSCOPIC DISPLAY
First Claim
Patent Images
1. A stereoscopic imaging device comprising:
- a plurality of imaging units for capturing a subject and outputting captured images, the imaging units including imaging optical systems positioned to allow stereoscopic display of the subject using the captured images outputted from the imaging units, wherein each imaging unit performs photometry at a plurality of points or areas in an imaging range thereof to determine an exposure for capturing the image using photometric values obtained by the photometry;
an index value obtaining unit for obtaining the photometric value as an index value for each of a plurality of subranges of the imaging range of each imaging unit;
an obstacle determining unit for comparing the index values of each set of the subranges at mutually corresponding positions in the imaging ranges of the different imaging units with each other, and if a difference between the index values in the imaging ranges of the different imaging units is large enough to satisfy a predetermined criterion, determining that the imaging range of at least one of the imaging units contains an obstacle that is close to the imaging optical system of the at least one of the imaging units;
a macro imaging mode setting unit for setting a macro imaging mode that provides imaging conditions suitable for capturing the subject at a position close to the stereoscopic imaging device; and
a unit for exerting a control such that the determination is not performed when the macro imaging mode is set.
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Abstract
An obstacle determining unit obtains predetermined index values for each of subranges of each imaging range of each imaging unit, compares the index values of the subranges at mutually corresponding positions in the imaging ranges of the different imaging units, and if a difference between the index values in the imaging ranges of the different imaging units is large enough to satisfy a predetermined criterion, determines that the imaging range of at least one of the imaging units contains an obstacle that is close to the imaging optical system of the at least one of the imaging units.
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Citations
18 Claims
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1. A stereoscopic imaging device comprising:
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a plurality of imaging units for capturing a subject and outputting captured images, the imaging units including imaging optical systems positioned to allow stereoscopic display of the subject using the captured images outputted from the imaging units, wherein each imaging unit performs photometry at a plurality of points or areas in an imaging range thereof to determine an exposure for capturing the image using photometric values obtained by the photometry; an index value obtaining unit for obtaining the photometric value as an index value for each of a plurality of subranges of the imaging range of each imaging unit; an obstacle determining unit for comparing the index values of each set of the subranges at mutually corresponding positions in the imaging ranges of the different imaging units with each other, and if a difference between the index values in the imaging ranges of the different imaging units is large enough to satisfy a predetermined criterion, determining that the imaging range of at least one of the imaging units contains an obstacle that is close to the imaging optical system of the at least one of the imaging units; a macro imaging mode setting unit for setting a macro imaging mode that provides imaging conditions suitable for capturing the subject at a position close to the stereoscopic imaging device; and a unit for exerting a control such that the determination is not performed when the macro imaging mode is set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An obstacle determination device comprising:
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an index value obtaining unit for obtaining, from a plurality of captured images for stereoscopically displaying a main subject obtained by capturing the main subject from different positions using imaging units, or from accompanying information of the captured images, photometric values at a plurality of points or areas in each imaging range for capturing each captured image as index values for each of subranges of the imaging range, the photometric values being obtained by photometry for determining an exposure for capturing the image; a determining unit for comparing the index values of each set of the subranges at mutually corresponding positions in the imaging ranges of the different plurality of captured images with each other, and if a difference between the index values in the imaging ranges of the different plurality of captured images is large enough to satisfy a predetermined criterion, determining that the imaging range of at least one of the captured images contains an obstacle that is close to an imaging optical system of the imaging unit; a macro imaging mode determining unit for determining, based on the accompanying information of the captured images, whether or not the captured images are captured using a macro imaging mode that provides imaging conditions suitable for capturing a subject at a position close to the stereoscopic imaging device; and a unit for exerting a control such that, if it is determined that the captured images are captured using the macro imaging mode, the determination by the determining means is not performed.
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18. An obstacle determining method for use with a stereoscopic imaging device including a plurality of imaging units for capturing a subject and outputting captured images, the imaging units including imaging optical systems positioned to allow stereoscopic display of the subject using the captured images outputted from the imaging units, the method being used to determine whether or not an obstacle is contained in an imaging range of at least one of the imaging units,
wherein each imaging unit performs photometry at a plurality of points or areas in the imaging range thereof to determine an exposure for capturing the image using photometric values obtained by the photometry, and the method comprises the steps of: -
obtaining the photometric value as an index value for each of a plurality of subranges of the imaging range of each imaging unit; determining whether or not a macro imaging mode that provides imaging conditions suitable for capturing the subject at a position close to the stereoscopic imaging device is set for the stereoscopic imaging device; and if it is determined that the macro imaging mode is not set, comparing the index values of each set of the subranges at mutually corresponding positions in the imaging ranges of the different imaging units with each other, and if a difference between the index values in the imaging ranges of the different imaging units is large enough to satisfy a predetermined criterion, determining that the imaging range of at least one of the imaging units contains an obstacle that is close to the imaging optical system of the at least one of the imaging units.
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Specification