摘要:
The present invention relates to the field of three-dimensional digital imaging, and more particularly to a three-dimensional measuring system and a measuring method with multiple measuring modes. The measuring system includes a control unit, a variable digital pattern generation unit, an image processing unit, a calculating unit and at least one image sensor; the control unit is adapted for controlling the cooperative work of the whole measuring system; the variable digital pattern generation unit includes a memory and a projector, and the memory stores a plurality of light template digital patterns; the image sensors are used for acquiring patterns which are projected onto a surface of a measured object; the image processing unit is a multi-mode digital image processor; and the calculating unit is a multi-mode three-dimensional point cloud calculator. The three-dimensional measuring system and the measuring method with multiple measuring modes of the present invention can implement the high-precision and high-detail three-dimensional measurement or handheld real-time measurement by switching the measuring modes, thereby having a wide application range.
摘要:
A rotary stage is controlled to two measurement positions along a rotational direction in which an object surface is moved when detecting a wavefront of reflected light from partial regions by a detecting unit, to move the object surface. Respective placement errors in a trajectory of the object surface at the two measurement positions are measured based on wavefronts detected by the detecting unit in states in which the rotary stage is controlled to each of the two measurement positions. For the remaining measurement positions among the measurement positions, respective placement errors with respect to the trajectory of the object surface are estimated based on the placement errors measured. Before measurement of each item of partial shape data, the rotary stage is controlled to a measurement position and stages are controlled to a position that cancels a placement error at the measurement position to align the object surface.
摘要:
Bei einem Verfahren zum Bestimmen der 3D-Koordinaten eines Objekts (1) werden eine Teil-Oberfläche des Objekts (1) durch ein 3D-Messgerät (2) aufgenommen und die 3D-Koordinaten dieser Teil-Oberfläche des Objekts (1) bestimmt. Es werden weitere Teil-Oberflächen des Objekts (1) durch das 3D-Messgerät (2) aufgenommen und die 3D-Koordinaten dieser Teil-Oberflächen bestimmt. Die 3D-Koordinaten der Teil-Oberflächen des Objekts (1) werden von einer Verarbeitungseinrichtung (3) zusammengesetzt. Um dieses Verfahren zu verbessern werden die Aufnahmen und/oder die 3D-Koordinaten einer oder mehrerer Teil-Oberflächen des Objekts (1) auf einer Datenbrille (4) dargestellt (Fig. 1).
摘要:
A shape measurement method includes acquiring a plurality of partial measurement data sets of a measurement surface (1a) and inclination data corresponding to the partial measurement data sets; performing fitting of the partial measurement data sets so that differences between a reference equation (D) and the partial measurement data sets are reduced, while the relative tilt between the partial measurement data sets is maintained less than or equal to a predetermined threshold; and obtaining the shape of the measurement surface (1a) by connecting the fitted partial measurement data sets.
摘要:
The present invention provides a system and method (400) of generating a three-dimensional model of an object. The method (400) includes capturing first image and range data corresponding to a first portion of the object from at least two different positions (step 405) and generating a first three-dimensional model of the first portion of the object using the first image and range data (step 410). The method further includes capturing second image and range data corresponding to a second portion of the object from at least two different positions and generating a second three-dimensional model of the second portion of the object using the second image and range data (step 415). The first and second portions are overlapping. Finally, a third three-dimensional model is generated describing the first and second portions of the object by combining the first and second three-dimensional models into a single three-dimensional model (step 420).
摘要:
An image processing device connected to an imaging unit (110) having an overlapping region in an imaging range before and after continuously capturing images, the image processing device being provided with: an interface for receiving a plurality of captured images captured by means of the imaging unit (110); a measurement means for acquiring the measurement result of a photographic subject in the captured images by subjecting the captured images to measurement processing; a synthesis means for generating a synthesized image by synthesizing the plurality of captured images such that the captured images overlap with one another within an overlapping range corresponding to the overlapping region and in the order in which the captured images were captured; and an output means for outputting the synthesized image, information indicating the overlapping range in association with the synthesized image, and information indicating the measurement result.
摘要:
Provided is a shape measurement method and a shape measurement apparatus for a tire in which the thickness of a tire can be measured around the tire precisely in a short time. Provided is a shape measurement method for a tire comprising: an outer surface and inner surface shape measurement steps in which, from image data of the outer surface and the inner surface, an outer surface shape data and an inner surface shape of the tire are detected; an outer surface and inner surface primary components extraction steps in which irregularities along the tire circumferential direction around the tire in the outer surface shape data and in the inner surface shape data are subjected to Fourier transformation to take out primary waveform components respectively; a circumferential position adjustment step in which the tire circumferential positions of both of the waveform components are adjusted to adjust the tire circumferential positions thereof; a cross section position adjustment step in which, from information about the placement angles and the positions of the first camera and the second camera, the tire radial direction cross section positions of the outer surface shape data and the inner surface shape data are adjusted; and a shape data synthesis step in which, based on the adjusted tire circumferential positions and the tire radial direction cross section positions, the outer surface shape data and the inner surface shape data are synthesized.