CN205919783U - Monocular vision system - Google Patents
Monocular vision system Download PDFInfo
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- CN205919783U CN205919783U CN201620803056.5U CN201620803056U CN205919783U CN 205919783 U CN205919783 U CN 205919783U CN 201620803056 U CN201620803056 U CN 201620803056U CN 205919783 U CN205919783 U CN 205919783U
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- light source
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Abstract
The utility model belongs to the technical field of the industry vision is measured and specifically relates to a monocular vision system is related to for gather the photo of testee, including colored camera of CCD and RGB third colored light source, the colored camera setting of CCD is in the upper end, RGB third colored light source sets up between colored camera of CCD and the testee, the surface of being surveyed of testee sets up in the visual field of the colored camera of CCD. The utility model discloses based on active optical measurements method, design a secret agent and be used for the utility model provides a light source to reduce feature extraction process image processing's the algorithm degree of difficulty, improve the precision and the reliability of system simultaneously. The utility model discloses hardware is with low costs, the measuring speed is fast, convenient to use, can extensively be used for micro object's surperficial three -dimensional measurement, the 3D of object to build pattern and fields such as 3D printing, three -dimensional scene measurement, has wide industrial application prospect.
Description
Technical field
This utility model is related to videogrammetry field, concretely relates to a kind of single camera vision system.
Background technology
The quantitative evaluation information of product surface quality can be given by measurement surface three-dimensional appearance, contribute to subdivided product system
Make the defect of process, beneficial to analyze its defect the regularity of distribution, lead to defect the reason and predict its development of defects trend, be easy to
Produce collection and the feedback of process product quality information, beneficial to optimized production process parameter, prevent the generation of subsequent defective, lifting
The quality of all round process product.And developing rapidly with automatic producing technology, need the table of Developing High-speed high reliability badly
Face three-dimensional dimension measuring method, provides the service of fast and reliable for production process.Therefore, the utility model proposes body surface
Three-dimensional dimension measuring method has great importance.
The achievement of existing three-dimensional measurement is broadly divided into contact and contactless two classes.Traditional contact measurement method
With three-coordinates measuring machine as representative.In terms of non-contact measurement, it is divided into non-optical measurement method and optical measuring method again.Non-optical
Measurement method has acoustic method, time-of-flight method etc..By contrast, optical measuring method has noncontact, not damaged, high-resolution
The advantages of rate, speed are fast, currently acquired is increasingly widely applied.According to lighting source dissimilar it can be divided into passively
Formula and active.Passive optical measurement has multi-vision visual method and monocular vision method, and the difficult point of multi-vision visual method is three-dimensional
Join, need to carry out substantial amounts of matching operation and be easily subject to ambient lighting conditions during measurement surface three-dimensional appearance, calculate
High cost, certainty of measurement, limited speed.Monocular vision method adopts a video camera to obtain testee under natural lighting
Surface three dimension information, commonly uses and rebuilds (shape from shading-sfs) method Measuring Object surface three dimension shape based on light and shade
Looks, it is true that the sfs problem based on lambertian illumination reflection model is ill, do not have unique solution；Existing algorithm is usual
Assume the object that object of study is smooth surface, that is, think that the second-order partial differential coefficient of body surface height function is continuous, then
Solved according to the regularization model that correlated condition sets up sfs problem, mainly had minimization method, Law of Communication, local approach and line
Property method, but error can be brought by the solution that regularization process obtains problem, thus obtained three-dimensional appearance easily occurs not true
Determine phenomenon, and solution efficiency needs to improve, and still has gap from online detection requirements.Active optical measurement method is based on fill-in light
Source is irradiated and is carried out three-dimensional measurement, mainly has interferometric method, phase measurement and trigonometry etc., wherein Through Optical Interference Spectra mainly has holography
Interferometric method, Moire fringe technique etc., interferometric method has higher precision, but its measurement range is little, and environment is had high demands, therefore micro-
Apply less in manufacture and assembling process；Phase measurement mainly has phase shift method, fourier transform method, grating project etc., so
And affected by solution phase precision, phase measurement need relatively for the certainty of measurement of complex surface pattern, speed and reliability
Big raising space；Trigonometry is measured by triangle geometrical relationship between projection source, testee and ccd imageing sensor
Object dimensional pattern, mainly has laser triangulation, light cross-section method, structure Light Source Method etc., wherein laser triangulation high precision, fits
Wide with scope, the measurement stability of the method is easily affected by factors such as depth of focus, speckle, measured surfaces.Light cross-section method can be used for quickly
The field such as molding and three dimension profile measurement, but the optical losses position of light cross-section method is difficult accurately to extract and has it is difficult to measure
The micro element surface topography of high arrangement.
Understand from the retrieval result analysis of existing patent documentation: the surface three dimension size of Developing High-speed high reliability is online
Test problems are trends of the times, and the still difficult satisfaction of existing surface three dimension dimension measurement method manufactures at a high speed and assembling process product
Surface three dimension quality online detection requirements.
Utility model content
The purpose of this utility model is that the hardware cost solving existing method for three-dimensional measurement is high, is difficult to be applied to height at a high speed
The problems such as surface three dimension online dimension detection of reliability, is it is proposed that a kind of single camera vision system.
In order to realize above-mentioned purpose, adopt the following technical scheme that.A kind of single camera vision system, for gathering measured object
The photo of body, including ccd color camera and redgreenblue light source, described ccd color camera is arranged on upper end, described RGB
Three-color light source is arranged between described ccd color camera and testee, and the measured surface of described testee is arranged on described
In the visual field of ccd color camera.
Described redgreenblue light source is trichroism led annular light source, including the red led ring light arranging from top to bottom
Source, green led annular light source and blue led annular light source.
Described ccd color camera is connected with computer, after ccd color camera gathers the photo of testee, directly transmits
Carry out calculation process to computer.
Described ccd color camera is arranged on adjustable support, can adjust the height of ccd color camera according to practical situation
Degree, resets the distance between ccd color camera and testee.
The setting height(from bottom) of trichroism led annular light source, incident angle, distribution density are strictly demarcated respectively, same to time point
Bright trichroism led annular light source, gathers the photo of testee using ccd color camera；The light setting up single camera vision system studies
As model；Determine that method solves the optical imagery mould of single camera vision system using incident ray with respect to the angle of incidence of visual field plane
Type, you can obtain testee surface elevation information a little.
Compared with prior art, based on active optical measurement method, a kind of spy of design is used for this reality to this utility model
With the light source of new use, that is, this light source is beneficial to by measured surface three-dimensional appearance information projection in the image lacking width as far as possible,
And make the target information in image obtain optimal separation, thus reducing the algorithm of characteristic extraction procedure image procossing with background information
Difficulty, improves precision and the reliability of system simultaneously.This utility model hardware cost is low, measuring speed is fast, easy to use, can be wide
The fields such as the general surface three dimension for small items measures, 3d modeling and the 3d of object print, three-dimensional scenic measurement, have wide
Prospects for commercial application.
Brief description
Fig. 1 is structural representation of the present utility model.
Specific embodiment
The utility model will be further described below in conjunction with the accompanying drawings.
Structure of the present utility model is as shown in figure 1, include ccd color camera 1 and redgreenblue light source.Ccd colour phase
Machine 1 is arranged on upper end, and redgreenblue light source is arranged between ccd color camera and testee 5, testee 5 tested
Surface 6 is arranged in the visual field of ccd color camera 1.Redgreenblue light source is trichroism led annular light source, including from top to bottom
The red led annular light source 2 of setting, green led annular light source 3 and blue led annular light source 4.
Ccd color camera 1 can be connected with computer, after the photo of collection testee 5, be transmitted directly to computer and enter
Row operation is processed.Ccd color camera 1 can be arranged on adjustable support.Ccd color camera 1 is adjusted according to practical situation
Highly, reset the distance between ccd color camera 1 and testee 5.
In trichroism light irradiation visual field during same point, in the same location of pixels of coloured image, generation is represented three kinds of color of light
The gray value of intensity.Because the incoming position of three coloured light is different, thus can set up three imaging equation groups, so can solve by
The height that location is put.In the design and fabrication of trichroism led annular light source, to the setting height(from bottom) of led assorted in light source, angle of incidence
Degree, distribution density are strictly demarcated respectively, make the positional information that the coloured image collecting comprises incident illumination.And, work
The each led of middle annular light source lights simultaneously.After designing and demarcate by light source uniform it is believed that in visual field unit area (can see
Make area corresponding to single pixel) in receive light of same color shine intensity be uniform.
Claims (4)
1. a kind of single camera vision system, for gathering the photo of testee it is characterised in that including ccd color camera and red
Turquoise three-color light source, described ccd color camera is arranged on upper end, and described redgreenblue light source is arranged on described ccd colour phase
Between machine and testee, the measured surface of described testee is arranged in the visual field of described ccd color camera.
2. single camera vision system according to claim 1 is it is characterised in that described redgreenblue light source is trichroism led
Annular light source, including the red led annular light source arranging from top to bottom, green led annular light source and blue led annular light source.
3. single camera vision system according to claim 1 is it is characterised in that described ccd color camera is connected with computer.
4. single camera vision system according to claim 1 is it is characterised in that described ccd color camera is arranged on scalable
On support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620803056.5U CN205919783U (en) | 2016-07-28 | 2016-07-28 | Monocular vision system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620803056.5U CN205919783U (en) | 2016-07-28 | 2016-07-28 | Monocular vision system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205919783U true CN205919783U (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620803056.5U Expired - Fee Related CN205919783U (en) | 2016-07-28 | 2016-07-28 | Monocular vision system |
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| Country | Link |
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| CN (1) | CN205919783U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289099A (en) * | 2016-07-28 | 2017-01-04 | 汕头大学 | A kind of single camera vision system and three-dimensional dimension method for fast measuring based on this system |
| CN109087299A (en) * | 2018-08-20 | 2018-12-25 | 北京航空航天大学 | A kind of image collecting device of the aviation wire number identification based on monocular vision |
| CN109443319A (en) * | 2018-12-21 | 2019-03-08 | 联创汽车电子有限公司 | Barrier range-measurement system and its distance measuring method based on monocular vision |
| CN109443202A (en) * | 2018-11-05 | 2019-03-08 | 西安工业大学 | A kind of measurement method of scene data |
-
2016
- 2016-07-28 CN CN201620803056.5U patent/CN205919783U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289099A (en) * | 2016-07-28 | 2017-01-04 | 汕头大学 | A kind of single camera vision system and three-dimensional dimension method for fast measuring based on this system |
| CN106289099B (en) * | 2016-07-28 | 2018-11-20 | 汕头大学 | A kind of single camera vision system and the three-dimensional dimension method for fast measuring based on the system |
| CN109087299A (en) * | 2018-08-20 | 2018-12-25 | 北京航空航天大学 | A kind of image collecting device of the aviation wire number identification based on monocular vision |
| CN109087299B (en) * | 2018-08-20 | 2022-02-08 | 北京航空航天大学 | Image acquisition device of aviation wire serial number discernment based on monocular vision |
| CN109443202A (en) * | 2018-11-05 | 2019-03-08 | 西安工业大学 | A kind of measurement method of scene data |
| CN109443319A (en) * | 2018-12-21 | 2019-03-08 | 联创汽车电子有限公司 | Barrier range-measurement system and its distance measuring method based on monocular vision |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170201 Termination date: 20190728 |