Measuring apparatus
First Claim
1. A shape measuring apparatus comprising:
- a characteristic pattern extracting portion, in accordance with a pair of first images of a subject for measurement having characteristic patterns serving as references provided thereon in different angles and a pair of second images of the subject for measurement having no characteristic patterns serving as references provided thereon in the same angles as with the fist images, for calculating the difference between the first image and the second image taken in each direction thereby obtaining the characteristic patterns;
positional relationship calculating portion for obtaining a positional relationship between the pair of the first images or the pair of the second images on the basis of the difference images obtained in said characteristic pattern extracting portion;
a stereo model forming portion, in accordance with the positional relationship obtained in said positional relationship calculating portion, for mutually relating the fist images or the second images so that a stereo model capable of being stereoscopically viewed is formed; and
a shape measuring portion for obtaining the shape of the subject in accordance with the stereo model formed in said stereo model forming portion.
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Abstract
A preferred shape measuring apparatus comprises a characteristic pattern extracting portion, in accordance with a pair of first images of a subject for measurement having characteristic patterns serving as references provided thereon in different angles and a pair of second images of the subject for measurement having no characteristic patterns serving as references provided thereon in the same angles as with the fist images, for calculating the difference between the first image and the second image taken in each direction thereby obtaining the characteristic patterns, positional relationship calculating portion for obtaining a positional relationship between the pair of the first images or the pair of the second images on the basis of the difference images obtained in the characteristic pattern extracting portion, a stereo model forming portion, in accordance with the positional relationship obtained in the positional relationship calculating portion, for mutually relating the fist images or the second images so that a stereo model capable of being stereoscopically viewed is formed, and a shape measuring portion for obtaining the shape of the subject in accordance with the stereo model formed in the stereo model forming portion.
29 Citations
17 Claims
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1. A shape measuring apparatus comprising:
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a characteristic pattern extracting portion, in accordance with a pair of first images of a subject for measurement having characteristic patterns serving as references provided thereon in different angles and a pair of second images of the subject for measurement having no characteristic patterns serving as references provided thereon in the same angles as with the fist images, for calculating the difference between the first image and the second image taken in each direction thereby obtaining the characteristic patterns;
positional relationship calculating portion for obtaining a positional relationship between the pair of the first images or the pair of the second images on the basis of the difference images obtained in said characteristic pattern extracting portion;
a stereo model forming portion, in accordance with the positional relationship obtained in said positional relationship calculating portion, for mutually relating the fist images or the second images so that a stereo model capable of being stereoscopically viewed is formed; and
a shape measuring portion for obtaining the shape of the subject in accordance with the stereo model formed in said stereo model forming portion. - View Dependent Claims (2, 3, 4)
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5. An image forming apparatus for shape measurement comprising:
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a characteristic pattern forming portion for selectively forming characteristic patterns serving as references on a subject for measurement; and
an image forming portion for taking images of a subject for measurement having characteristic patterns serving as references provided thereon in different directions thereby obtaining a pair of first images and taking images of the subject for measurement having no characteristic patterns serving as references provided thereon in the same directions as with the first images thereby obtaining a pair of second images. - View Dependent Claims (6)
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7. An image measuring apparatus comprising:
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an approximate position measuring portion for approximately obtaining, from a pair of images of a subject for measurement in different directions, positional information of the subject for measurement in each of the images;
a data setting portion, having one image of the pair of images set as a reference image and the other image as a searched image, for setting up, in accordance with the positional information obtained in said approximate position measuring portion, reference data blocks in the reference image and setting up searched areas in the searched image and searched data blocks in the searched area; and
a correspondence determining portion for obtaining correspondence between the searched data block set up in the searched area and the reference data block, wherein said data setting portion is adapted, in accordance with the positional information obtained in said approximate position measuring portion, to perform at least either setting up of the reference data blocks in the reference image or setting up of the searched areas and setting up of the searched data blocks in the searched image. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification