Image providing method and device
First Claim
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1. An image-providing device comprising:
- a fish-eye image input device inputting fish-eye image;
a fish-eye image storage device storing said input fish-eye image;
a visual-field information input device inputting in real-time visual-field information including information on sight-line direction (theta, phi) and on field angle (gamma) in visual-field area of said fish-eye image;
a drawing area calculation device for calculating in real-time, using said input visual-field information, each pixel of a drawing area in a plane which is orthogonal to said sight-line direction and has an extent determined by said field angle; and
a dewarping processing device determining a pixel position in said fish-eye image which corresponds to each pixel position in said calculated drawing area to form in real-time a dewarped image from the fish-eye image with its distortion removed.
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Abstract
Visual-field information including information on sight-line direction (theta, phi) and on field angle (gamma) in visual-field area of input fish-eye image is input in real-time. From the input visual-field information, a drawing area of a plane is calculated in real-time that is orthogonal to the sight-line direction and has an extent determined by the field angle. A pixel position in the fish-eye image that corresponds to each pixel position in the calculated drawing area is determined. This forms in real-time a dewarped image from the fish-eye image with its distortion removed.
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Citations
12 Claims
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1. An image-providing device comprising:
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a fish-eye image input device inputting fish-eye image;
a fish-eye image storage device storing said input fish-eye image;
a visual-field information input device inputting in real-time visual-field information including information on sight-line direction (theta, phi) and on field angle (gamma) in visual-field area of said fish-eye image;
a drawing area calculation device for calculating in real-time, using said input visual-field information, each pixel of a drawing area in a plane which is orthogonal to said sight-line direction and has an extent determined by said field angle; and
a dewarping processing device determining a pixel position in said fish-eye image which corresponds to each pixel position in said calculated drawing area to form in real-time a dewarped image from the fish-eye image with its distortion removed. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An image providing method comprising:
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inputting a fish-eye image and storing it in a storage device;
inputting in real-time visual-field information including information on sight-line direction (theta, phi) and on field angle (gamma) in visual-field area of said fish-eye image;
calculating in real-time, using said input visual-field information, each pixel of a drawing area in a plane which is orthogonal to said sight-line direction and has an extent determined by said field angle; and
determining a pixel position in said fish-eye image which corresponds to each pixel position in said calculated drawing area to form in real-time a dewarped image from the fish-eye image with its distortion removed. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification