Image processing method and apparatus therefor
First Claim
1. An image processing method executing:
- image input processing for inputting a still image train obtained by photographing an object while time-serially changing a visual point position and direction;
reference image determination processing for determining one image of the still image train input by the image input processing as a reference image;
specific point selection processing for selecting, as specific points, identical points photographed in two adjoining images of images constituting the still image train;
first procedure derivation processing for deriving a procedure for coordinate-transforming one of the adjoining images to the other image so that the specific points selected in the specific point selection processing match each other between the adjoining images;
second procedure derivation processing for deriving a procedure for coordinate-transforming the specific points transformed by the procedure derived by the first procedure derivation processing onto a two-dimensional coordinate system identical to a two-dimensional coordinate system of the reference image;
division processing for dividing a two-dimensional space to which the reference image belongs into a plurality of domains in correspondence with the specific points transformed by the procedure derived by the second procedure derivation processing;
coordinate transformation processing for coordinate-transforming the images of the still image train onto the two-dimensional space to which the reference image belongs; and
wide angle image production processing for producing a single image as a whole by inserting coordinate information of each of the images coordinate-transformed onto the two-dimensional space to which the reference image belongs into each of the divided domains divided in correspondence with the specific points of the images.
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Abstract
In order to obtain a field angle wider than that determined by a lens of a photographing apparatus by means of image processing, a given image is selected as a reference image from a still image train acquired by photographing an object by time-serially changing the visual point position and direction, a procedure for coordinate-transforming specific points in the respective images onto a two-dimensional coordinate system identical to that of the reference image is derived, a two-dimensional space is Voronoi-divided in correspondence with the specific points based on the derived procedure, the respective images are coordinate-transformed using a coordinate transform procedure for transforming the respective images to the reference images, and the coordinate information of each of the coordinate-transformed images is inserted in one of the Voronoi domains including the specific points of the respective images.
53 Citations
7 Claims
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1. An image processing method executing:
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image input processing for inputting a still image train obtained by photographing an object while time-serially changing a visual point position and direction; reference image determination processing for determining one image of the still image train input by the image input processing as a reference image; specific point selection processing for selecting, as specific points, identical points photographed in two adjoining images of images constituting the still image train; first procedure derivation processing for deriving a procedure for coordinate-transforming one of the adjoining images to the other image so that the specific points selected in the specific point selection processing match each other between the adjoining images; second procedure derivation processing for deriving a procedure for coordinate-transforming the specific points transformed by the procedure derived by the first procedure derivation processing onto a two-dimensional coordinate system identical to a two-dimensional coordinate system of the reference image; division processing for dividing a two-dimensional space to which the reference image belongs into a plurality of domains in correspondence with the specific points transformed by the procedure derived by the second procedure derivation processing; coordinate transformation processing for coordinate-transforming the images of the still image train onto the two-dimensional space to which the reference image belongs; and wide angle image production processing for producing a single image as a whole by inserting coordinate information of each of the images coordinate-transformed onto the two-dimensional space to which the reference image belongs into each of the divided domains divided in correspondence with the specific points of the images.
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2. An image processing method comprising:
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the first step of inputting a still image train obtained by photographing an object while time-serially changing a visual point position and direction; the second step of selecting one image from the still image train as a reference image; the third step of deriving a coordinate transformation procedure for transforming one of adjoining images to the other image so that pixels correspond to each other between the adjoining images in the still image train; the fourth step of deriving a coordinate transformation procedure for transforming the respective images to the reference image using the coordinate transformation procedure derived in the third step; the fifth step of transforming specific points in the respective images to a two-dimensional coordinate system identical to a two-dimensional coordinate system of the reference image using the coordinate transformation procedure derived in the fourth step; the sixth step of Voronoi-dividing a two-dimensional space on the basis of the specific points which are transformed to the two-dimensional coordinate system identical to the two-dimensional coordinate system of the reference image; the seventh step of coordinate-transforming the respective images using a coordinate transformation procedure for transforming the respective images to the reference image; and the eighth step of producing a single image by inserting coordinate information of each of the coordinate-transformed images into each of Voronoi domains including specific points of the images. - View Dependent Claims (3, 4)
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5. An image processing apparatus comprising:
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image input means for inputting a still image train obtained by photographing an object while time-serially changing a visual point position and direction; reference image selection means for selecting one image from the still image train as a reference image; first derivation means for deriving a coordinate transformation procedure for transforming one of adjoining images to the other image so that pixels correspond to each other between the adjoining images in the still image train; second derivation means for deriving a coordinate transformation procedure for transforming the respective images to the reference image using the coordinate transformation procedure derived by said first derivation means; first coordinate transformation means for transforming specific points in the respective images to a two-dimensional coordinate system identical to a two-dimensional coordinate system of the reference image using the coordinate transformation procedure derived by said second derivation means; Voronoi division means for Voronoi-dividing a two-dimensional space on the basis of the specific points which are transformed to the two-dimensional coordinate system identical to the two-dimensional coordinate system of the reference image; second coordinate transformation means for coordinate-transforming the respective images using a coordinate transformation procedure for transforming the respective images to the reference image; and wide angle image production means for producing a single image by inserting coordinate information of each of the coordinate-transformed images into each of Voronoi domains including specific points of the images. - View Dependent Claims (6, 7)
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Specification