IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, IMAGE PROCESSING SYSTEM, PROGRAM, STORAGE MEDIUM, AND INTEGRATED CIRCUIT
First Claim
1. An image processing device comprising:
- a brightness information calculation portion operable to calculate brightness information of an image signal that can form an image made up of pixels, the calculation being performed per pixel or per pixel region made up of a plurality of pixels;
an interest level estimation portion operable to estimate an interest level indicating the degree to which the pixel or the pixel region is visually focused on in the image, based on the brightness information;
a vanishing point estimation portion operable to estimate vanishing point information of the image, based on the brightness information;
a depth estimation portion operable to estimate a degree of depth based on the interest level and the vanishing point information and calculate a correction gain for performing a depth correction process on the image signal based on the degree of depth; and
a depth correction portion operable to perform the depth correction process on the image signal based on the correction gain.
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Abstract
The present invention executes color correction that improves the feeling of depth of a 2D image with ease and by using a preexisting device.
Input image data is first converted into brightness information by a brightness information calculation portion. The interest level within the image is then estimated by an interest level estimation portion based on that information. The vanishing point is then estimated by a vanishing point estimation portion. Next, a depth estimation portion estimates the degree of depth based on the distance from the vanishing point to a pixel i and the interest level of the pixel i, and calculates a depth correction gain value. A corrected image, obtained by controlling a depth correction image process based on the depth correction gain value, is converted to a predetermined image format and outputted by an output portion. Accordingly, by linking an interest level based on the brightness contrast/color contrast/blurriness amount with the depth estimation based on the vanishing point, the occurrence of abnormalities felt with images that do not properly match up with the perspective structure of the vanishing point, images that do not match the visual impression of humans, and so on can be reduced, making it possible to achieve a more natural and improved feeling of depth.
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Citations
20 Claims
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1. An image processing device comprising:
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a brightness information calculation portion operable to calculate brightness information of an image signal that can form an image made up of pixels, the calculation being performed per pixel or per pixel region made up of a plurality of pixels; an interest level estimation portion operable to estimate an interest level indicating the degree to which the pixel or the pixel region is visually focused on in the image, based on the brightness information; a vanishing point estimation portion operable to estimate vanishing point information of the image, based on the brightness information; a depth estimation portion operable to estimate a degree of depth based on the interest level and the vanishing point information and calculate a correction gain for performing a depth correction process on the image signal based on the degree of depth; and a depth correction portion operable to perform the depth correction process on the image signal based on the correction gain. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An image processing method comprising:
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calculating brightness information of an image signal that can form an image made up of pixels, the calculation being performed per pixel or per pixel region made up of a plurality of pixels; estimating an interest level indicating the degree to which the pixel or the pixel region is visually focused on in the image, based on the brightness information; estimating vanishing point information of the image, based on the brightness information; estimating a degree of depth based on the interest level and the vanishing point information and calculating a correction gain for performing a depth correction process on the image signal based on the degree of depth; and performing a depth correction process on the image signal based on the correction gain.
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20. A computer-readable storage medium in which is stored a program that causes a computer to function as:
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a brightness information calculation portion operable to calculate brightness information of an image signal that can form an image made up of pixels, the calculation being performed per pixel or per pixel region made up of a plurality of pixels; an interest level estimation portion operable to estimate an interest level indicating the degree to which the pixel or the pixel region is visually focused on in the image, based on the brightness information; a vanishing point estimation portion operable to estimate vanishing point information of the image, based on the brightness information; a depth estimation portion operable to estimate a degree of depth based on the interest level and the vanishing point information and calculate a correction gain for performing a depth correction process on the image signal based on the degree of depth; and a depth correction portion operable to perform the depth correction process on the image signal based on the correction gain.
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Specification