CN206583440U - A kind of projected image sighting distance detecting system - Google Patents
A kind of projected image sighting distance detecting system Download PDFInfo
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- CN206583440U CN206583440U CN201720226862.5U CN201720226862U CN206583440U CN 206583440 U CN206583440 U CN 206583440U CN 201720226862 U CN201720226862 U CN 201720226862U CN 206583440 U CN206583440 U CN 206583440U
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Abstract
The utility model is related to a kind of projected image sighting distance detecting system, including：Camera drive module, the camera drive module is connected with CCD camera；Image capture module, is connected with CCD camera, receives CCD camera collection pictorial information, and optical signal is switched into electric signal；Image processing module, is connected with described image acquisition module；Feature extraction module, is connected with image processing module；Distance-measurement module, is connected with the feature extraction module.The utility model is simple in construction, function is integrated, intelligent level is higher, according to Binocular Vision Principle, obtain the two images in same projection simultaneously from different perspectives by the camera of horizontal positioned, utilize similar triangle theory, the D coordinates value of projection is obtained by calculating the parallax of spatial point in two images, the system can realize the functions such as collection, processing, feature point extraction, the measurement of image, complete projecting apparatus to the measurement of distance between curtain.
Description
Technical field
The utility model is related to sighting distance detection technique field, more particularly to a kind of projected image sighting distance detecting system.
Background technology
The spacing of the projected position of the picture of space measured point respectively in the image plane of left and right two is referred to as parallax.Actually should
In, parallax will produce more serious consequence, such as because parallax may cause Distance Judgment inaccurate, it is impossible to Accurate Determining
The distance of standpoint and target point, the calculating to spatial point position will be solved according to parallax, but the calculating of parallax in itself is three-dimensional
More difficult part in vision, the positioning precision that prior art is detected to projected image sighting distance is not high, larger apart from detection error,
Therefore, prior art needs to improve.
Utility model content
To solve the above problems, the utility model discloses a kind of projected image sighting distance detecting system.Including：
Camera drive module, the camera drive module is connected with CCD camera, and for driving CCD camera, camera is divided
Resolution, AD controls, drainage pattern, spectrum assignment, gain control, camera selection parameter are configured；
Image capture module, described image acquisition module is connected with CCD camera, receives CCD camera collection pictorial information, and
Optical signal is switched into electric signal；
Image processing module, described image processing module is connected with described image acquisition module, receives image capture module
The electric image signal information of transmission, pixel grey scale extraction, noise elimination, image enhaucament, edge extracting processing are carried out to image；
Feature extraction module, the feature extraction module is connected with image processing module, receives image processing module processing
The image crossed, and the point for having significant change in the two-dimensional direction to the grey scale signal of image carries out extraction matching, obtains characteristic point
Positional information in the picture；
Distance-measurement module, the distance-measurement module is connected with the feature extraction module, is carried by receiving characteristic point
Characteristic point position information obtained by modulus block, the locus for obtaining test point is calculated according to similar triangle theory.
In another embodiment based on above-mentioned projected image sighting distance detecting system, described image acquisition module is at least with 2
Platform CCD camera is connected, and camera places along baseline, and its optical axis is parallel to each other, CCD camera as picture signal collecting device.
In another embodiment based on above-mentioned projected image sighting distance detecting system, the model MER- of the CCD camera
133-54U3M。
Compared with prior art, the utility model includes advantages below：
The utility model is simple in construction, function is integrated, intelligent level is higher, according to Binocular Vision Principle, passes through level
The camera of placement obtains the two images in same projection simultaneously from different perspectives, using similar triangle theory, by calculating
The parallax of spatial point in two images obtains the D coordinates value of projection, and the system can realize the collection of image, processing, special
The functions such as an extraction, measurement are levied, projecting apparatus are completed to the measurement of distance between curtain.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used in description of the prior art does one and simply introduced.
Fig. 1 is structural representation of the present utility model.
In figure：1 camera drive module, 2 image capture modules, 3 image processing modules, 4 feature extraction modules, 5 distances are surveyed
Measure module.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is only a part of embodiment of the utility model, rather than whole embodiments.Based in the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of the utility model protection.
Fig. 1 is structural representation of the present utility model, as shown in figure 1, the present embodiment discloses a kind of projected image sighting distance inspection
Examining system includes：
Camera drive module 1, the camera drive module 1 is connected with CCD camera, for driving CCD camera, to camera
Resolution ratio, AD controls, drainage pattern, spectrum assignment, gain control, camera selection parameter are configured；
Image capture module 2, described image acquisition module 2 is connected with CCD camera, receives CCD camera collection pictorial information,
And optical signal is switched into electric signal；
Image processing module 3, described image processing module 3 is connected with described image acquisition module 2, receives IMAQ mould
The electric image signal information that block 2 is sent, at the extraction of image progress pixel grey scale, noise elimination, image enhaucament, edge extracting
Reason；It is the image obtained to image capture module that pixel grey scale, which is extracted, and brightness of image is sampled on each location of pixels
And quantization so that obtain the gray value of each pixel in image and gray-scale statistical a little, be follow-up gray scale computing, image
Segmentation etc. is prepared；To eliminate noise, it is more prone to Image Feature Detection, passes through the methods pair such as image smoothing, image sharpening
Image is handled, and is that next step feature extraction is prepared；
Feature extraction module 4, the feature extraction module 4 is connected with image processing module 3, receives image processing module 3
Treated image, and the point for having significant change in the two-dimensional direction to the grey scale signal of image carries out extraction matching, obtains spy
Levy positional information a little in the picture；The distance measure of the present embodiment depends primarily on pixel of the dimensional target point under camera and sat
Scale value, therefore, the precision of the feature point extraction of binocular vision are the bases of the system distance-finding method, and feature extraction module 4 passes through
Grey scale change is compared to the image that image processing module 3 is treated, differentiated, finding peripheral region gray level has significantly
The point of change, the point is characteristic point, is applied on image, come by an operator sensitive to grey scale change during concrete operations
Characteristic point is extracted, finally, pixel coordinate value of the dimensional target point under camera is obtained；
Distance-measurement module 5, the distance-measurement module 5 is connected with the feature extraction module 4, by receiving characteristic point
Characteristic point position information obtained by extraction module 4, the locus for obtaining test point is calculated according to similar triangle theory；
The module is calculated according to pixel coordinate value of the dimensional target point under camera and the transforming relationship of pixel coordinate system and image coordinate system
Positional information of the dimensional target point under left and right cameras is obtained, focal length, the distance of two optic axises with reference to two video cameras are utilized
Similar triangle theory, calculates the locus for obtaining space measured point.
Described image acquisition module 2 is at least connected with 2 CCD cameras, and camera is placed along baseline, and its optical axis is parallel to each other,
CCD camera as picture signal collecting device.
The model MER-133-54U3M of the CCD camera.
A kind of projected image sighting distance detecting system provided by the utility model is described in detail above, herein
Apply specific case to be set forth principle of the present utility model and embodiment, the explanation of above example is only intended to
Help understands method of the present utility model and its core concept；Simultaneously for those of ordinary skill in the art, according to this practicality
New thought, be will change in specific embodiments and applications, in summary, and this specification content should not
It is interpreted as to limitation of the present utility model.
Finally it should be noted that：Preferred embodiment of the present utility model is the foregoing is only, this is not limited to
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it can still modify to the technical scheme described in foregoing embodiments, or to which part technical characteristic
Equivalent substitution is carried out, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvements made etc.,
It should be included within protection domain of the present utility model.
Claims (3)
1. a kind of projected image sighting distance detecting system, it is characterised in that including：
Camera drive module, the camera drive module is connected with CCD camera, for driving CCD camera, the resolution to camera
Rate, AD controls, drainage pattern, spectrum assignment, gain control, camera selection parameter are configured；
Image capture module, described image acquisition module is connected with CCD camera, receives CCD camera collection pictorial information, and by light
Signal switchs to electric signal；
Image processing module, described image processing module is connected with described image acquisition module, is received image capture module and is sent
Electric image signal information, pixel grey scale extraction, noise eliminations, image enhaucament, edge extracting are carried out to image and is handled；
Feature extraction module, the feature extraction module is connected with image processing module, receives what image processing module was treated
Image, and the point for having significant change in the two-dimensional direction to the grey scale signal of image carries out extraction matching, obtains characteristic point in figure
Positional information as in；
Distance-measurement module, the distance-measurement module is connected with the feature extraction module, by receiving feature point extraction mould
Characteristic point position information obtained by block, the locus for obtaining test point is calculated according to similar triangle theory.
2. projected image sighting distance detecting system according to claim 1, it is characterised in that described image acquisition module is at least
Be connected with 2 CCD cameras, camera is placed along baseline, its optical axis is parallel to each other, CCD camera as picture signal collecting device.
3. projected image sighting distance detecting system according to claim 1 or 2, it is characterised in that the model of the CCD camera
For MER-133-54U3M.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720226862.5U CN206583440U (en) | 2017-03-09 | 2017-03-09 | A kind of projected image sighting distance detecting system |
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| CN201720226862.5U CN206583440U (en) | 2017-03-09 | 2017-03-09 | A kind of projected image sighting distance detecting system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110087049A (en) * | 2019-05-27 | 2019-08-02 | 广州市讯码通讯科技有限公司 | Automatic focusing system, method and projector |
| CN110455027A (en) * | 2019-07-16 | 2019-11-15 | 海信集团有限公司 | A kind of image collecting device and its refrigerator, control method |
-
2017
- 2017-03-09 CN CN201720226862.5U patent/CN206583440U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110087049A (en) * | 2019-05-27 | 2019-08-02 | 广州市讯码通讯科技有限公司 | Automatic focusing system, method and projector |
| CN110455027A (en) * | 2019-07-16 | 2019-11-15 | 海信集团有限公司 | A kind of image collecting device and its refrigerator, control method |
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Granted publication date: 20171024 Termination date: 20210309 |
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