Image region extraction device, image region extraction method, and image region extraction program
First Claim
1. An image region extracting apparatus that extracts, from an image photographed by a camera, a target region based on a designation region, the apparatus comprising:
- a control circuit configured to acquire a pixel value change pattern and a distance change pattern of each part of the image, the pixel value change pattern being a spatial change characteristic of a pixel value component, and the distance change pattern being a spatial change characteristic of a distance component indicating a distance from a view point of the camera to a subject; and
the control circuit being further configured to extract the target region based on similarities of the pixel value change pattern and the distance change pattern between the designation region and each part of the image.
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Abstract
An image region extraction device for extracting a target region on the basis of a designated region with high precision. An image region extraction device (100) extracts a target region from an image on the basis of a designated region and is provided with: a spatial change learning unit (180) for acquiring, for each section of the image, a pixel value changing pattern which is a characteristic of the spatial changes in a pixel value component, and a distance changing pattern which is a characteristic of the spatial changes in a distance component extending from a reference position to a photographic object; and a region dividing unit (210) for extracting a target region on the basis of the similarities between the pixel value changing pattern and the distance changing pattern among the designated region and each section of the image.
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Citations
11 Claims
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1. An image region extracting apparatus that extracts, from an image photographed by a camera, a target region based on a designation region, the apparatus comprising:
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a control circuit configured to acquire a pixel value change pattern and a distance change pattern of each part of the image, the pixel value change pattern being a spatial change characteristic of a pixel value component, and the distance change pattern being a spatial change characteristic of a distance component indicating a distance from a view point of the camera to a subject; and the control circuit being further configured to extract the target region based on similarities of the pixel value change pattern and the distance change pattern between the designation region and each part of the image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An image region extracting method for extracting, from an image photographed by a camera, a target region based on a designation region, the method comprising:
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acquiring a pixel value change pattern and a distance change pattern of each part of the image, the pixel value change pattern being a spatial change characteristic of a pixel value component, and the distance change pattern being a spatial change characteristic of a distance component indicating a distance from a view point of the camera to a subject; and extracting the target region based on similarities of the pixel value change pattern and the distance change pattern between the designation region and each part of the image.
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11. An image region extracting program stored on a non-transitory computer medium for extracting, from an image photographed by a camera, a target region based on a designation region, the program causing a computer to execute processing comprising:
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acquiring a pixel value change pattern and a distance change pattern of each part of the image, the pixel value change pattern being a spatial change characteristic of a pixel value component, and the distance change pattern being a spatial change characteristic of a distance component indicating a distance from a view point of the camera to a subject; and extracting the target region based on similarities of the pixel value change pattern and the distance change pattern between the designation region and each part of the image.
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Specification