Imaging device for recognition and method of controlling the same
First Claim
1. An imaging device for recognition including an image pickup unit that sequentially generates a plurality of images by shooting an object, an object recognition unit that recognizes, in each of the plurality of images, an object region in which the object is located in the image, and a tracking unit that tracks the object region across the plurality of images, said imaging device for recognition comprising:
- an area calculation unit configured to calculate an area of the object region; and
an exposure control unit configured to set a first exposure time for the image pickup unit in the case where the area is smaller than a first threshold, and to set a second exposure time longer than the first exposure time in the case where the area is equal to or larger than the first threshold,wherein said exposure control unit is configured to set the first exposure time in the case where a resolution for recognition proportional to the area and inversely proportional to a motion blur in the object region is lower than a second threshold, and to set the second exposure time in the case where the resolution for recognition is equal to or higher than the second threshold.
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Accused Products
Abstract
An imaging device for recognition (100) includes an image pickup unit (101) that sequentially generates a plurality of images by shooting an object, a face recognition unit (105) that recognizes, in each of the plurality of images, an object region in which the object is located in the image, a face tracking unit (106) that tracks the object region across the plurality of images, an area calculation unit (109) that calculates an area of the object region, and an exposure control unit (102) that sets a first exposure time for the image pickup unit (101) in the case where the area is smaller than a first threshold, and sets a second exposure time longer than the first exposure time in the case where the area is equal to or larger than the first threshold.
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Citations
6 Claims
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1. An imaging device for recognition including an image pickup unit that sequentially generates a plurality of images by shooting an object, an object recognition unit that recognizes, in each of the plurality of images, an object region in which the object is located in the image, and a tracking unit that tracks the object region across the plurality of images, said imaging device for recognition comprising:
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an area calculation unit configured to calculate an area of the object region; and an exposure control unit configured to set a first exposure time for the image pickup unit in the case where the area is smaller than a first threshold, and to set a second exposure time longer than the first exposure time in the case where the area is equal to or larger than the first threshold, wherein said exposure control unit is configured to set the first exposure time in the case where a resolution for recognition proportional to the area and inversely proportional to a motion blur in the object region is lower than a second threshold, and to set the second exposure time in the case where the resolution for recognition is equal to or higher than the second threshold. - View Dependent Claims (2, 3, 6)
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4. A method of controlling an imaging device for recognition including an image pickup unit that sequentially generates a plurality of images by shooting an object, said method comprising:
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recognizing, in each of the plurality of images, an object region in which the object is located in the image; tracking the object region across the plurality of images; calculating an area of the object region; and controlling an exposure of the image pickup unit so as to set a first exposure time in the case where the area is smaller than a first threshold, to set a second exposure time longer than the first exposure time in the case where the area is equal to or larger than the first threshold, to set the first exposure time in the case where a resolution for recognition proportional to the area and inversely proportional to a motion blur in the object region is lower than a second threshold, and to set the second exposure time in the case where the resolution for recognition is equal to or higher than the second threshold. - View Dependent Claims (5)
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Specification