CN202133629U

CN202133629U - Multi-surface imaging metering device

Info

Publication number: CN202133629U
Application number: CN201120124215U
Authority: CN
Inventors: 周望
Original assignee: Suzhou University
Current assignee: Suzhou University
Priority date: 2011-04-25
Filing date: 2011-04-25
Publication date: 2012-02-01
Anticipated expiration: 2021-04-25

Abstract

The utility model relates to a technology of metering front and side panorama of an object by once imaging, particularly relates to a technology of reflecting side panorama of an object by a conical inside reflective surface, so that the once imaging of the front and side panorama of an object with one camera is realized. A photographing unit (4) is arranged on the top of an object (3) to be metered. A reflective mirror (1) and a circular photographing light source (6) are arranged around the object (3) to provide the circular photographing light source. An output signal of the photographing unit is reshaped and recovered by a photograph information processing system (5), and then a judging or metering result is acquired. The utility model adopts an once photographing imagery technology with a reflective imaging optical structure. The operation of the technology is simple, so work efficiency of detecting the object to be metered in real-time is improved, auxiliary assemblies, such as rotation, position and stepping motor driver, are no more needed, so that the manufacturing cost of the entire metering device is lowered.

Description

A kind of multiaspect image measuring device

Technical field

the utility model relates to a kind of Polaroid technology that is used for object to be measured front and side thereof in the NI Vision Builder for Automated Inspection; Be specifically related to the conical inboard reflective mirror of a kind of employing with the reflection of object to be measured side panorama, realize that single camera is Polaroid to object to be measured front and side thereof.

Background technology

NI Vision Builder for Automated Inspection (image processing system) has at a high speed, not tired, flexible characteristics, is widely used in the industrial automation field.Through the image-pickup device of machine vision, like CMOS camera or CCD camera) will be become picture signal by the picked-up Target Transformation, send the special image disposal system to, according to information such as pixel distribution, brightness, colors, be transformed into digital signal; Image processing system through various computings to picture signal extracting objects characteristic, like key elements such as area, quantity, position, length.Then, according to preset permissibility and other conditions output result, comprise size, angle, number, qualified/defective, have/do not have etc., realize automatic discrimination function, the operation of opertaing device.Machine vision is to install machines to replace manual labor to make to judge or measurement.

In prior art; China's utility model patent provides a kind of " automatic checkout system that multi-angle image is taken " (CN201438179U); Form by filming apparatus, propulsion system and gearing; Directly over filming apparatus comprises one camera and directly over the camera fixing support, and side camera and side camera fixing dish thereof; Step motor and one group of synchronizing wheel, synchronizing wheel belt and side camera fixing disc spins gear train are formed power and gearing.During shooting, a camera is taken directly over measured object, and another camera measured object side is taken.Directly over camera be the establishing shot mode, the side camera adopts step motor and gear drive to rotate.Measured object is taken, obtained the set of diagrams picture.Chinese invention patent a kind of " method and apparatus of automatic rotating mobile terminal camera head shooting results " (CN101068309) disclosed method may further comprise the steps: (1) preestablishes a default position, the anglec of rotation when detecting shooting between mobile terminal camera and the said default position; (2) mobile terminal camera head shooting results is rotated processing, and preserves the shooting results after the rotation processing.Disclosed device comprises photographing module, memory module, angular detection module and rotation processing module.This method and apparatus has solved photo or video after handling in the prior art when being browsed, scenery position on its picture and observer's the inconsistent problem of custom angle.

In prior art scheme, need many filming apparatus multi-angles to take, or two cameras; Wherein one under the cooperation of whirligig; Just can obtain panoramic picture, therefore, need devices such as rotation, location, step motor drive; Make the structure of whole device complicated, manufacturing cost is bigger.

Summary of the invention

in order to overcome the deficiency that prior art exists, the correlativity that the purpose of the utility model provides between a kind of gained image is good, simple in structure, multiaspect image measuring device with low cost.

realize that the technical scheme that the utility model purpose is adopted provides the measurement mechanism that a kind of multiaspect forms images, and it comprises: catoptron, device for shooting, pattern information processing system and ring-type photographic light sources; Device for shooting places the top of object to be measured, and catoptron and ring-type photographic light sources place the periphery of object to be measured, and the output signal of device for shooting obtains judging or measurement result after the pattern information processing system shaping recovers to handle.

Compared with prior art, the advantage of the utility model is:

1, only need the separate unit camera head, reduced the input cost of shooting part; And object to be measured or camera are establishing shot, no longer need servicing units such as rotation, location, step motor drive, have reduced the construction cost of entire measuring device.

Imaging technique is once taken in , employing; Process is simple, improves the work efficiency that detects object to be measured in real time, and the positive and side width of cloth picture that exists together; Two different images information integrations in an ensemble of communication, the correlativity between raising information (picture).

Description of drawings

Fig. 1 is the structural representation of a kind of measurement mechanism of providing of the utility model embodiment;

Fig. 2 is the areal distribution synoptic diagram of the object multiaspect image to be measured that a kind of measurement mechanism obtained that provides of the utility model embodiment;

Among figure: 1, conical inboard reflective mirror; 2, object carrying platform to be measured; 3, object to be measured; 4, camera (video camera); 5, pattern information processing system; 6, annular light source; 7, object to be measured side coboundary image imaging light path; 8, middle part, object side to be measured image imaging light path; 9, object side bottom edge image imaging optical path to be measured; 10, the image-region of object to be measured positive (top); 11, inactive area.

Embodiment

below in conjunction with accompanying drawing and embodiment, further describe the utility model technical scheme.

Embodiment one:

are referring to accompanying drawing 1; In the present embodiment; Object 3 to be measured is positioned over the imaging center of carrying platform 2; For taking object to be measured light source is provided by annular light source 6, forms object to be measured side coboundary image imaging light path 7, object to be measured side middle part image imaging light path 8 and object side bottom edge image imaging optical path 9 to be measured; Camera (video camera) 4 is placed in over against object top center position, the angle of taper that determines conical inboard reflective mirror 1 by the field angle and object to be measured 3 height dimensions of camera (video camera) 4.

if object to be measured is elected a cylindrical tank shape packing material (like pop can) as, top end face has draw ring and date of manufacture printing type face, and sideway swivel face is printed on commodity pattern or bar code.Specification product require to be printed on intact, sidespin face clear patterns of date of manufacture, draw ring and do not have pit.Through the judgement measurement mechanism that the utility model provides, on production line, obtain product imaging picture in real time, and measure or judge.This method can replace the quality of product on artificial real-time oversight, the line of managing production efficiently.Referring to accompanying drawing 2, it is the areal distribution synoptic diagram of the object multiaspect image to be measured that obtained; 10 is the image-region on object to be measured positive (top), therefrom can observe the date of manufacture to have or not with draw ring intactly, and Fig. 2 is object sideway swivel face to be measured (panorama) image-region distribution schematic diagram, 7, object to be measured side coboundary image imaging light path; 8, middle part, object side to be measured image imaging light path; 9, object side bottom edge image imaging optical path to be measured; 10, the image-region of object to be measured positive (top).Institute's image that obtains can be according to actual needs, after shaping restoration is handled, therefrom can observe or measure to judge whether sidespin face pattern is intact, whether the characteristic portion of pit and care thereof etc. is arranged.

The image-forming principle explanation:

referring to attaching Fig. 1 and 2, annular light source 6 is for subject provides surround lighting, and object positive (top) images in the center of picture, i.e. border circular areas.Object side (panorama) images in the annular shape zone 12 of picture.Object side bottom image to be measured images in the interior ring of annular section in accompanying drawing 2, image in the outer shroud of annular section in the image accompanying drawing 2 of object to be measured side coboundary, with the linear amplification of real image.When object to be measured was right cylinder, the ring-type image was radial in proportion in the accompanying drawing 2.Image information beyond the ring-type is an inactive area 11.

Judge and the measurement features principle:

can obtain a plurality of characteristic faces of object to be measured, based on the algorithm of machine vision metrology, judging characteristic through image-forming principle shown in Figure 1; A preset standard form of screening image; With regard to one or more key points (face), measure or compare for picture and preset template that needs are handled, according to the size of measured value or comparison difference; Alternative manual work makes a policy, and judges that object to be measured is an acceptance or rejection.

Embodiment two:

When are done to measure or are judged at square shaped cube object to be measured; Referring to accompanying drawing 1; Conical inboard reflective mirror 1 in the measurement mechanism that embodiment one is provided changes into the inner side plane reflective mirror of square platform shape, forms cubical four lateral surface images.Each face mirror reflects goes out the corresponding side surface of object to be measured.Through camera (video camera) picked-up square column type object to be measured a plurality of are through implementing to measure or judge to the picture that obtains.

Claims

1. a multiaspect image measuring device is characterized in that it comprises: catoptron (1), device for shooting (4), pattern information processing system (5) and ring-type photographic light sources (6); Device for shooting places the top of object to be measured, and catoptron and ring-type photographic light sources place the periphery of object to be measured, and the output signal of device for shooting obtains judging or measurement result after the pattern information processing system shaping recovers to handle.

2. a kind of multiaspect image measuring device according to claim 1 is characterized in that: described catoptron is conical inboard reflective mirror.

3. a kind of multiaspect image measuring device according to claim 1 is characterized in that: the inner side plane reflective mirror of the described catoptron side of being platform shape.