Imaging apparatus, image processing method for imaging apparatus, recording medium and carrier wave signal
First Claim
1. An imaging apparatus comprising:
- an area acquisition section (203) which acquires an area from which an image is to be extracted, based on an input image including an original (4), placed on a stage (13) including a figure of a known shape and acquired by shooting the stage (13) and the original (4) from an oblique direction, and the figure;
an extraction section (203) which extracts from the input image an image of a portion corresponding to the area acquired by the area acquisition section (203);
a parameter acquisition section (203) which acquires a parameter for correcting the image extracted by the extraction section (203) to an image of the original (4) as seen from the front; and
a correction section (203) which corrects the image extracted by the extraction section (203) to the image of the original (4) as seen from the front using the parameter acquired by the parameter acquisition section (203).
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Accused Products
Abstract
A document camera (1) detects a figure of a known shape on a stage (13) and acquires the coordinates of the figure, and acquires image processing area and projection correction parameter. The document camera (1) extracts image data of the image processing area from image data acquired by shooting the stage (13) and an original (4), and performs projection correction on the image data using the projection correction parameter. Further, the document camera (1) performs rotation correction on image data undergone projection correction. Furthermore, the document camera (1) performs zoom correction on image data undergone rotation correction, and generates output input image.
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Citations
19 Claims
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1. An imaging apparatus comprising:
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an area acquisition section (203) which acquires an area from which an image is to be extracted, based on an input image including an original (4), placed on a stage (13) including a figure of a known shape and acquired by shooting the stage (13) and the original (4) from an oblique direction, and the figure;
an extraction section (203) which extracts from the input image an image of a portion corresponding to the area acquired by the area acquisition section (203);
a parameter acquisition section (203) which acquires a parameter for correcting the image extracted by the extraction section (203) to an image of the original (4) as seen from the front; and
a correction section (203) which corrects the image extracted by the extraction section (203) to the image of the original (4) as seen from the front using the parameter acquired by the parameter acquisition section (203). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. Image processing method for an imaging apparatus comprising:
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an area acquisition step (203) of acquiring an area from which an image is to be extracted, based on an input image including an original (4), placed on a stage (13) including a figure of a known shape and acquired by shooting the stage (13) and the original (4) from an oblique direction, and the figure;
an extraction step (203) of extracting from the input image an image of a portion corresponding to the area acquired by the area acquisition step (203);
a parameter acquisition step (203) of acquiring a parameter for correcting the image extracted by the extraction step (203) to an image of the original (4) as seen from the front; and
a correction step (203) of correcting the image extracted by the extraction step (203) to the image of the original (4) as seen from the front using the parameter acquired by the parameter acquisition step (203).
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18. A recording medium having recorded a program which allows a computer to execute:
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an area acquisition step (203) of acquiring an area from which an image is to be extracted, based on an input image including an original (4), placed on a stage (13) including a figure of a known shape and acquired by shooting the stage (13) and the original (4) from an oblique direction, and the figure;
an extraction step (203) of extracting from the input image an image of a portion corresponding to the area acquired by the area acquisition step (203);
a parameter acquisition step (203) of acquiring a parameter for correcting the image extracted by the extraction step (203) to an image of the original (4) as seen from the front; and
a correction step (203) of correcting the image extracted by the extraction step (203) to the image of the original (4) as seen from the front using the parameter acquired by the parameter acquisition step (203).
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19. A carrier wave signal superimposed with a program signal which allows a computer to execute:
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an area acquisition step (203) of acquiring an area from which an image is to be extracted, based on an input image including an original (4), placed on a stage (13) including a figure of a known shape and acquired by shooting the stage (13) and the original (4) from an oblique direction, and the figure;
an extraction step (203) of extracting from the input image an image of a portion corresponding to the area acquired by the area acquisition step (203);
a parameter acquisition step (203) of acquiring a parameter for correcting the image extracted by the extraction step (203) to an image of the original (4) as seen from the front; and
a correction step (203) of correcting the image extracted by the extraction step (203) to the image of the original (4) as seen from the front using the parameter acquired by the parameter acquisition step (203).
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Specification