DISTANCE MEASURING APPARATUS, IMAGING APPARATUS, AND DISTANCE MEASURING METHOD
First Claim
1. A distance measuring apparatus comprising:
- an angle-of-view matching unit configured to receive a primary image signal and a secondary image signal and to generate a cutout image signal, based on the primary image signal, by cutting out at least part of the secondary image signal having a resolution higher than that of the primary image signal and an angle of view equal to or wider than that of the primary image signal;
a parallax information generator configured to generate parallax information, based on the primary image signal and the cutout image signal;
a plurality of lookup tables in each of which a relation between the parallax information and a distance to an object is predetermined corresponding to a magnification of optical zoom of an imaging unit that images a primary image and outputs the primary image signal; and
a distance measuring unit configured to calculate a distance to a predetermined object included in the primary image signal, based on the parallax information and the primary image signal, using the lookup tables.
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Abstract
An imaging apparatus includes the following elements: a display unit configured to be openable and closable; a primary imaging unit; a secondary imaging unit for outputting a secondary image signal that has an angle of view equal to or wider than that of a primary image and a resolution higher than that of the primary image; an angle-of-view matching unit for generating a cutout image signal from the secondary image signal, based on the primary image signal; a parallax information generator for generating parallax information, based on the primary image signal and the cutout image signal; and a distance measuring unit for calculating a distance to a predetermined object included in the primary image signal, based on the parallax information and the primary image signal. In this imaging apparatus, the secondary imaging unit is disposed on the backside of the image display surface of the display unit.
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Citations
14 Claims
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1. A distance measuring apparatus comprising:
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an angle-of-view matching unit configured to receive a primary image signal and a secondary image signal and to generate a cutout image signal, based on the primary image signal, by cutting out at least part of the secondary image signal having a resolution higher than that of the primary image signal and an angle of view equal to or wider than that of the primary image signal; a parallax information generator configured to generate parallax information, based on the primary image signal and the cutout image signal; a plurality of lookup tables in each of which a relation between the parallax information and a distance to an object is predetermined corresponding to a magnification of optical zoom of an imaging unit that images a primary image and outputs the primary image signal; and a distance measuring unit configured to calculate a distance to a predetermined object included in the primary image signal, based on the parallax information and the primary image signal, using the lookup tables. - View Dependent Claims (2, 3, 12)
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4. An imaging apparatus comprising:
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a display unit configured to display an imaged image on an image display surface and configured to be openable and closable; a primary imaging unit configured to image a primary image and output a primary image signal; a secondary imaging unit configured to image a secondary image having an angle of view equal to or wider than that of the primary image with a resolution higher than that of the primary image and to output a secondary image signal; an angle-of-view matching unit configured to generate a cutout image signal, based on the primary image signal, by cutting out at least part of the secondary image signal; a parallax information generator configured to generate parallax information, based on the primary image signal and the cutout image signal; a plurality of lookup tables in each of which a relation between the parallax information and a distance to an object is predetermined corresponding to a magnification of optical zoom of the primary imaging unit; and a distance measuring unit configured to calculate a distance to a predetermined object included in the primary image signal, based on the parallax information and the primary image signal, using the lookup tables, wherein the secondary imaging unit is disposed on a backside of the image display surface of the display unit. - View Dependent Claims (5, 6, 7, 8, 13)
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9. A distance measuring method comprising:
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based on a primary image signal, generating a cutout image signal by cutting out at least part of a secondary image signal having a resolution higher than that of the primary image signal and an angle of view equal to or wider than that of the primary image signal; based on the primary image signal and the cutout image signal, generating parallax information; and based on the parallax information and the primary image signal, using a plurality of lookup tables in each of which a relation between the parallax information and a distance to an object is predetermined corresponding to a magnification of optical zoom of an imaging unit that images a primary image and outputs the primary image signal, calculating a distance to a predetermined object included in the primary image signal. - View Dependent Claims (10, 11, 14)
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Specification