CN1948895A - Measuring method of complete imaging based on form - Google Patents
Measuring method of complete imaging based on form Download PDFInfo
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- CN1948895A CN1948895A CN 200610016492 CN200610016492A CN1948895A CN 1948895 A CN1948895 A CN 1948895A CN 200610016492 CN200610016492 CN 200610016492 CN 200610016492 A CN200610016492 A CN 200610016492A CN 1948895 A CN1948895 A CN 1948895A
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- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention relates to image measuring instrument includes universal tool microscope and projector, whole image measuring method based on formwork. Its technical proposal is as follows: using the method to make testing matter and background formwork do multiple-step image at the same time; composing many partial images into the testing matter whole image according to the position information of the background formwork; relying on image processing to finish the measuring for the testing matter. The invention can be mainly used in image measuring instrument.
Description
Technical field
The present invention relates to the radiographic measurement instrument, universal tool-measuring microscope, projector specifically relates to be used for the measuring method of complete imaging based on template of radiographic measurement instrument.
Background technology
Radiographic measurement method based on ccd video camera is the detection technique of new generation that competitively develops both at home and abroad.Its basic thought is ccd video camera to be placed measure object lens image planes replacement optical instrument eyepiece, obtains image information for Computer Processing, realizes observing and measurement.This quasi-instrument has remedied the deficiency of present optical detecting instrument just, has improved efficient, has eliminated personal error.As observation type instrument, image measurer has been obtained considerable progress.But as measurement type instrument, limit by accuracy requirement, their just imagings on very small region only are to have realized automatic aiming under some situation, thereby can't break away from traditional point-to-point mechanical shift measurement pattern.When measurement point more for a long time, gauge head and workpiece must frequent relative motions, and irregular saying, are unsuitable for profile measurement.Thereby, be difficult to increase substantially detection efficiency, fundamentally realize robotization, intelligent measuring.
Summary of the invention
For overcoming the deficiencies in the prior art, the purpose of this invention is to provide a kind of prolongable radiographic measurement method of realized high precision, robotization, measurement range that is used for image measurer.
The technical solution used in the present invention is, measuring method of complete imaging based on template, make the together substep imaging of measured object and background template, the positional information that a plurality of topographies have according to background template is combined into the measured object complete image, and the measurement of measured object relies on Flame Image Process to be finished fully.
The background template of described measured object is to select the template with specific pattern for use, and makes size, shape, the positional precision of pattern satisfy accuracy requirement.
A part of the assurance accuracy requirement of measured object is only obtained in each imaging of described substep imaging, and makes this topography include the local pattern of template.
The local Template Information that described topography had can provide the relative position information between topography.
The positional information that die plate pattern provides in the described topography is via the complete image of Flame Image Process with each topography accurate amalgamation acquisition measured object.
Provided by the inventionly can bring following effect:
On the image measurer worktable, preset mark, pattern, make image measurer when obtaining measurand topography information, can obtain accurate relative position relation between each topography with accurate coordinates information; All sizes, position, shape information to measurand all can obtain by Flame Image Process, and no longer need extra mechanical motion, thereby realize robotization, intelligent measuring.
By regulating the visual field size, the fine and closely woven degree of image division can obtain the high-acruracy survey result at low cost.
In addition, because relative position information is provided by template between image, thereby reduce the accuracy requirement of measuring instrument greatly to the mechanical shift system.
Description of drawings
Fig. 1 has the template (sample) of accurate dimension, position, shape information.
A, b, c, d are the local figure of workpiece that is imaged as example with four steps among Fig. 2.
Fig. 3 is the workpiece complete image that the relative position benchmark obtains with icon indicia in the template.
Fig. 4 is the workpiece complete image that the relative position benchmark obtains with icon indicia in the template.
Embodiment
The present invention proposes a kind of prolongable radiographic measurement method of realized high precision, robotization, measurement range that is used for image measurer, promptly be used for the measuring method of complete imaging based on template of radiographic measurement instrument.
Content of the present invention is: preset mark, pattern with accurate coordinates information on the image measurer worktable, make image measurer when obtaining measurand topography information, can obtain accurate relative position relation between each topography.Image measurer is unit substep imaging with the visual field of satisfying precision, obtains the complete image of measurand behind image mosaic.Afterwards, all sizes of measurand, position, shape information all can obtain by Flame Image Process, and no longer need extra mechanical motion, thereby realize robotization, intelligent measuring.
By regulating the visual field size, the fine and closely woven degree of image division can obtain the high-acruracy survey result at low cost.In addition, because relative position information is provided by template between image, thereby reduce the accuracy requirement of measuring instrument greatly to the mechanical shift system.
With reference to the accompanying drawings and embodiment, further specify the present invention.
Implementation process of the present invention:
1, according to the image recognition technology characteristics, design and manufacturing dimension, position, form accuracy satisfy the template (see figure 1) of measurement requirement.
2, utilize imaging lens, ccd video camera, LCD light source and two-dimentional work bench to constitute the imaging system (see figure 4).
3, in this system step acquisitions cover topography's (seeing a among Fig. 2, b, c, d) of whole work-piece and template, every width of cloth image all contains the label information of the position of this image of sign in the plane of template qualification.
4, utilize the image mosaic technology to obtain the complete image (see figure 3) of workpiece based on Template Information.
5,, rely on image processing techniques can extract required geological information arbitrarily by the workpiece complete image.
Claims (5)
1. measuring method of complete imaging based on template, it is characterized in that, make the together substep imaging of measured object and background template, the positional information that a plurality of topographies have according to background template is combined into the measured object complete image, and the measurement of measured object relies on Flame Image Process to be finished fully.
2. a kind of measuring method of complete imaging based on template according to claim 1 is characterized in that the background template of described measured object is to select the template with specific pattern for use, and makes size, shape, the positional precision of pattern satisfy accuracy requirement.
3. a kind of measuring method of complete imaging based on template according to claim 1 is characterized in that, a part of the assurance accuracy requirement of measured object is only obtained in each imaging of described substep imaging, and makes this topography include the local pattern of template.
4. a kind of measuring method of complete imaging based on template according to claim 1 is characterized in that the local Template Information that described topography had can provide the relative position information between topography.
5. a kind of measuring method of complete imaging based on template according to claim 1 is characterized in that, the positional information that die plate pattern provides in the described topography is via the complete image of Flame Image Process with each topography accurate amalgamation acquisition measured object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610016492 CN1948895A (en) | 2006-11-02 | 2006-11-02 | Measuring method of complete imaging based on form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610016492 CN1948895A (en) | 2006-11-02 | 2006-11-02 | Measuring method of complete imaging based on form |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1948895A true CN1948895A (en) | 2007-04-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610016492 Pending CN1948895A (en) | 2006-11-02 | 2006-11-02 | Measuring method of complete imaging based on form |
Country Status (1)
| Country | Link |
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| CN (1) | CN1948895A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928463A (en) * | 2016-06-08 | 2016-09-07 | 广东工业大学 | Automatic measuring system and method based on characteristic point matching |
| CN105928464A (en) * | 2016-06-08 | 2016-09-07 | 广东工业大学 | Automatic measuring system and method based on image splicing |
-
2006
- 2006-11-02 CN CN 200610016492 patent/CN1948895A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928463A (en) * | 2016-06-08 | 2016-09-07 | 广东工业大学 | Automatic measuring system and method based on characteristic point matching |
| CN105928464A (en) * | 2016-06-08 | 2016-09-07 | 广东工业大学 | Automatic measuring system and method based on image splicing |
| CN105928464B (en) * | 2016-06-08 | 2018-11-09 | 广东工业大学 | Automatic measurement system based on image mosaic and measurement method |
| CN105928463B (en) * | 2016-06-08 | 2019-03-05 | 广东工业大学 | Automatic measurement system and measurement method based on Feature Points Matching |
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