摘要:
A three-dimensional coordinate measuring apparatus has a first and second incident angle adjusting sections for adjusting the attitude of the object in the directions of first and second neutral axes, respectively, to adjust the incident angle of the beam projected on the object from an imaging optical system relative to the object so that first and second stereoscopic images of the object can be formed, a matching process section for searching for corresponding points corresponding to measurement points in first and second search directions generally perpendicular to the first and second neutral axes, respectively, in the first and second stereoscopic images, and a shape measuring section for obtaining three-dimensional coordinate data of the object based on the relation between the measurement points and the corresponding points in the first and second stereoscopic images.
摘要:
An automatic suction device for an eyeglass lens and a method for determining suction jig installation position, capable of recognizing that a frame exchange lens holder is being installed on a placement table, making transition to installation work of a frame exchange mode, and avoiding an erroneous contact between the frame exchange frame and a lens holding frame. The kind of holding means placed on the placement table is determined from an image of the inside of an opening (141), which image is taken by a CCD camera (105), and the installation position of a suction jig (121) at an eyeglass lens (L) placed on a frame exchange lens holder (300) is obtained.
摘要:
A calibrating apparatus for a zoom lens comprising: a first image-acquiring section 60 for acquiring a first image-for-calibration by photographing an area, in which reference marks for calibration are positioned, with a photographic device-to-be-calibrated 19 whose focal length is set to a first focal length; a second image-acquiring section 62 for acquiring a second image-for-calibration by photographing the area, in which the reference marks for calibration are positioned, with the photographic device-to-be-calibrated 19 whose focal length is set to a second focal length; a correction coefficient calculating section 64 for calculating a calibration correction coefficient for the first and second focal lengths, with the use of the photographed reference marks in the first and second image-for-calibrations: and a reference mark inferring section 66 for inferring a positional relationship of the photographed reference marks for calibration in the second image-for-calibration, with the use of the photographed reference marks for calibration in the first image-for-calibration.
摘要:
To provide an electron beam system capable of performing three-dimensional measurement of a sample with high precision irrespective of the tilt angle and height of the sample. The electron beam system has a correction factor storing section 32 for storing a correction factor at a reference tilt angle with respect to a plane which is used to tilt a sample by a sample tilting section 5, an approximate coordinate measuring section 28 for obtaining an approximate shape or approximate coordinate values of the sample based on an output corresponding to a stereo image from an electron beam detecting section 4, an image correcting section 30 for correcting the stereo image according to the tilt angle created by the sample tilting section 5 based on the shape or coordinate values of the sample obtained in the approximate coordinate measuring section 28 using a correction factor stored in the correction factor storing section 32, and a precise coordinate measuring section 34 for obtaining a shape or coordinate values of the sample which are more precise than those obtained in the approximate coordinate measuring section 28 based on a corrected stereo image obtained in the image correcting section 30.
摘要:
This invention provides an electron beam measuring device capable of performing three-dimensional image measurement of a sample with high precision, irrespective of the tilt angle and height of the sample, by adjusting an electron optical system of a scanning charged-particle beam device so as to be suitable for image measurement. The electron beam measuring device includes a measuring section 20 adapted to tilt a reference template held by a sample holder 3 and an irradiated electron beam 7 relative to each other by means of a sample tilting section 5, to find the shape or coordinate values of the reference template based on a stereo image photographed by an electron beam detecting section 4, a calibration data preparing section 30 for comparing the measuring results at the measuring section 20 with known reference data to prepare calibration data for a stereo image photographed by the electron beam measuring device, and a calibration section 40 for performing a calibration based on the calibration data so as to reduce aberration in an image of the sample detected by the electron beam detecting section 4. Based on the stereo image calibrated by the calibration section 40, the shape or coordinate values of the sample 9 are found.
摘要:
An image measuring apparatus includes 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, sets up, in accordance with the positional information obtained in the approximate position measuring portion, reference data blocks in the reference image and sets up searched areas in the searched image and searched data blocks in the searched area. A correspondence determining portion obtains correspondence between the searched data block set up in the searched area and the reference data block. The data setting portion, in accordance with the positional information obtained in the approximate position measuring portion, performs 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.
摘要:
To provide an electron beam system capable of performing three-dimensional measurement of a sample with high precision irrespective of the tilt angle and height of the sample. The electron beam system has a correction factor storing section 32 for storing a correction factor at a reference tilt angle with respect to a plane which is used to tilt a sample by a sample tilting section 5, an approximate coordinate measuring section 28 for obtaining an approximate shape or approximate coordinate values of the sample based on an output corresponding to a stereo image from an electron beam detecting section 4, an image correcting section 30 for correcting the stereo image according to the tilt angle created by the sample tilting section 5 based on the shape or coordinate values of the sample obtained in the approximate coordinate measuring section 28 using a correction factor stored in the correction factor storing section 32, and a precise coordinate measuring section 34 for obtaining a shape or coordinate values of the sample which are more precise than those obtained in the approximate coordinate measuring section 28 based on a corrected stereo image obtained in the image correcting section 30.
摘要:
An electron beam device according to the present invention is made up of an electron beam source for emitting an electron beam, an electron optical system for irradiating the electron beam onto a specimen, a specimen holder for holding the specimen, a specimen tilting section for producing relative tilt angles between the specimen holder and the electron beam, an electron beam detecting section for detecting electron beam emitted from the specimen, and a data correcting section for correcting the three-dimensional detection data to have specified relationship under the condition of a relative tilt angle between the specimen holder and the electron beam.
摘要:
A stereo image measuring device capable of facilitating determination as to the correctness of the result of stereo image corresponding point measurement is disclosed. The stereo image measuring device comprises: a first display unit including a normal monitor; a second display unit including a stereo-monitor enabling stereoscopic viewing; a mark formation unit for displaying a mouse cursor; an instruction unit for instructing X, Y and Z directions; a corresponding area search unit for searching a corresponding area with respect to a reference area; a corresponding area position verification unit for verifying the coincidence of the searched area with the position of the reference area; a corresponding area deciding unit for deciding the searched corresponding area as a corresponding area; a storage unit for storing the verification result of the corresponding area position verification unit, the reference area, the corresponding area, and the decided corresponding area decided by the corresponding area deciding unit; a decided corresponding area correction unit for correcting the decided corresponding area; an image storage unit for storing a digitized stereo image; and a display memory for displaying an image. The instruction unit includes a planar direction instruction unit for instructing the planar (X, Y) direction of the reference area by a mouse, and a Z direction instruction unit for instructing a depth (Z) direction during three-dimensional measurement.
摘要:
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.