Position detector and attitude detector

A position detector for detecting a position on a given plane comprising:

• a controller that adds a known standard including asymmetric pattern on the given plane;
• an image sensor having an image plane on which an image of the given plane is formed with an image of the standard included, a point in the image of the given plane which is formed at a predetermined position of the image plane corresponding to the point to be detected on the given plane;
• an image processor that identifies the image of the standard on the image plane;
• a processor that calculates the position of the point to be detected on the basis of the identified image of the standard on the image plane.

A position detector for detecting a position on a given plane comprising:

• a controller that adds on the given plane a known standard including a first standard and a second standard, the controller sequentially adding the first standard and the second standard;
• an image sensor having an image plane on which an image of the given plane is formed, a point in the image of the given plane which is formed at a predetermined position of the image plane corresponding to the point to be detected on the given plane, the image sensor being designed to sense a first image with an image of the first standard included and a second image with an image of the second standard included;
• an image processor that calculates the difference between the first image and the second image to identify the image of the standard on the image plane, the image processor determining whether the difference is accompanied with the plus sign or the minus sign at the identified standard;
• a processor that calculates the position of the point to be detected on the basis of the identified image of the standard on the image plane.

An attitude detector for detecting an attitude of a given plane comprising:

• a controller that adds on the given plane a known standard including a first standard and a second standard, the controller sequentially adding the first standard and the second standard;
• an image sensor having an image plane on which an image of the given plane is formed, the image sensor being designed to sense a first image with an image of the first standard included and a second image with an image of the second standard included;
• an image processor that calculates the difference between the first image and the second image to identify the image of the standard on the image plane, the image processor determining whether the difference is accompanied with the plus sign or the minus sign at the identified standard;
• a processor that calculates the attitude of the given plane on the basis of the identified image of the standard on the image plane.

A detector for detecting a standard on a given plane comprising:

• a controller that forms an image on the given plane by means of scanning the given plane, the controller being designed to add the standard as a part of the image on the given plane formed by the scanning;
• an image sensor having an image plane on which an image of the given plane is formed with an image of the standard included, a point in the image of the given plane which is formed at a predetermined position of the image plane corresponding to the point to be detected on the given plane, the image sensor being designed to read out the sensed image upon the termination of at least one period of the scanning;
• and
• an image processor that identifies the image of the standard on the image plane.

A detector for detecting a standard on a given plane comprising:

• a controller that forms an image on the given plane by means of scanning the given plane, the controller being designed to add the standard as a part of the image on the given plane formed by the scanning, the standard including a first standard and a second standard to be sequentially added;
• an image sensor having an image plane on which an image of the given plane is formed, the image sensor being designed to sense a first image with an image of the first standard included and a second image with an image of the second standard included;
• and
• an image processor that identifies the image of the standard on the image plane in accordance with the first image and the second image,
• wherein the controller is further designed to start the adding of the second standard upon the initiation of the scanning after the image sensor completes the reading out of the sensed image including the first standard.