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Panoramic scanner

A scanner and object technology, applied in instruments, measuring devices, optical devices, etc., can solve problems such as insufficient consistency, and achieve the effects of saving time and cost, high accuracy, and easy operation

Inactive Publication Date: 2008-04-16
SIEMENS AUDIOLOGISCHE TECHN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this known method is that for some purposes there is not sufficient agreement between the computer model and the real object

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0036] figure 1 A device 1 for determining three-dimensional object coordinates of a surface 2 of an object 3 to be inspected is shown.

[0037] The device 1 has a projector 4 which projects a colored pattern 5 onto the surface 2 of the object 3 to be inspected. exist figure 1 In the shown case, the color pattern 5 is composed of a row of juxtaposed color bars. However, it is also conceivable to use one or two-dimensional color patterns instead of figure 1 The 1D color pattern shown in 5.

[0038] exist figure 1 In the illustrated embodiment, a projection plane g can be assigned to each point P on the surface 2 of the object 3 . The projection data are thus encoded by this color pattern 5 . The color pattern 5 projected onto the surface 2 of the object 3 is converted by a camera 6 into an image 7 in which the points P on the surface 2 are converted into points P′. In the known arrangement of the projector 4 and the camera 6 , especially when the basic distance 8 is a kn...

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PUM

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Abstract

In order to provide a cheap sweep scanner used for detecting three-dimensional objects (3) especially for detecting an ear model (11), the present invention proposes that a graphic pattern (2) is projected to an object (3, 11) to be detected by means of a projector (4, 12 and 63) and an object image (7) is shoot by means of a camera (6, 13, 61 and 62), wherein, images of some signs (14, 65) exist in the object image (7) and are capable of realizing positional one-to-one correspondence of the object (3, 11) relative to the projector (4, 12 and 63) and the camera (6, 13, 61 and 62).On the basis that the signs do not require accurate synchronization between rotating motion of the object (3, 11) and the shooting of the object image, very low request is proposed for the adopted machinery precision.

Description

technical field [0001] The invention relates to a method for three-dimensional detection of an object. In addition, the invention also relates to a device for carrying out the method and the use of the device and the method. Background technique [0002] Methods for three-dimensional inspection and digital display of inspected objects are used in various applications such as the development, manufacture and quality control of industrial products and components. In medical technology, for example, optical measuring methods are used to manufacture housings for hearing aids that can be worn in the ear. In order to individually adapt a housing to the ear canal of a hearing aid wearer, an audiologist produces a model (impression) of the hearing patient's external auditory canal from a rubber-like plastic. Stereolithography or similar methods can be used to manufacture the hearing aid housing, so that a three-dimensional computer model must be created from the ear model. This p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/25
CPCG01B11/2522G01B11/2509
Inventor 冈特·多伊门斯弗兰克·福斯特托斯滕·尼德德兰克彼得·鲁梅尔
Owner SIEMENS AUDIOLOGISCHE TECHN