CN109325939B - High dynamic image fuzzy detection and verification device - Google Patents
High dynamic image fuzzy detection and verification device Download PDFInfo
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- CN109325939B CN109325939B CN201810984606.1A CN201810984606A CN109325939B CN 109325939 B CN109325939 B CN 109325939B CN 201810984606 A CN201810984606 A CN 201810984606A CN 109325939 B CN109325939 B CN 109325939B
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- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 238000012795 verification Methods 0.000 title claims abstract description 21
- 239000011521 glass Substances 0.000 claims abstract description 31
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 238000001259 photo etching Methods 0.000 claims abstract description 16
- 239000002131 composite material Substances 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000011156 evaluation Methods 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 11
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- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
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- 238000003708 edge detection Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- G06—COMPUTING; CALCULATING OR COUNTING
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- G06T5/00—Image enhancement or restoration
- G06T5/73—Deblurring; Sharpening
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/20—Analysis of motion
- G06T7/246—Analysis of motion using feature-based methods, e.g. the tracking of corners or segments
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
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Abstract
The invention discloses a high-dynamic image blur detection and verification device, belongs to the technical field of computer vision measurement, and relates to a high-dynamic image blur detection and verification device. The device is composed of a composite light source structure and a measuring standard consisting of coding mark points and circular characteristic points; the measuring reference is composed of a photoetching glass substrate, a glass cover plate, a substrate fixing screw and an integral connecting screw, and the composite light source structure is composed of a plane normally-bright light source and a stroboscopic light source. The device has the integrated function of motion blur detection and verification, combines a combined light source structure and a measuring standard containing coding mark points and circular feature points into a whole, can simultaneously acquire clear features and fuzzy features of a detected target in a single-frame image, can realize image blur qualitative verification and evaluation under the high-dynamic condition, and has the advantages of good integration and applicability, simple and flexible structure, high efficiency and convenience in operation.
Description
Technical Field
The invention belongs to the technical field of computer vision measurement, and relates to a high-dynamic image fuzzy detection and verification device.
Background
The vision measurement method has the capability of non-contact high-precision measurement under any spatial trajectory, and is gradually widely applied to various industries, such as aerospace, ship engineering, automobile manufacturing and other industrial fields. In order to improve the image matching accuracy, control the detection error of the feature points and realize the three-dimensional feature measurement of large workpieces, the mark points are required to represent the image positioning information, wherein the circular feature points are quickly and accurately matched by measuring the coded mark points containing unique information, and the method is an effective means for acquiring the feature point positioning information. Under the condition of high-speed dynamic detection, the image generates a motion blur phenomenon, and the extraction precision of the feature point positioning information is directly influenced, so that the method is very critical to the deblurring processing of the image. The existing method and the adaptive device carry out moving image deblurring based on shot images, and only can evaluate the image blurring degree from an indirect angle and verify the image deblurring effect.
At present, the research on image blur detection and verification devices under high-speed dynamic conditions is relatively less, and the invention is 'an image deblurring method and device based on motion detection' with the patent number of CN 103440624B in the invention of Xiaoli, Yuetong and the like of the university of science and technology in Huazhong, the device is combined with the invention method to obtain the motion parameters of a camera through an inertial navigation device, estimate the motion track according to the motion parameters, solve a blur kernel by using multi-view geometry, and finally filter and solve a clear image. The invention discloses an image motion blur removing method and device with patent number CN 104794696B, which is invented by Changsha Ingmei Ruifu Intelligent technology Limited, Zhang Xufeng, Liuwangming and the like, and the method utilizes the device to carry out edge detection on an image, extracts edge information of a motion target in a motion direction and a vertical motion direction, extracts a motion target area based on the motion information and carries out blur removing treatment, and combines the treated motion target area with a non-motion target area in an original image to generate a blur removed whole image. The device structure combined with the method can complete the image deblurring processing only by six modules, but only indirectly evaluate the image blurring degree and can not verify the image deblurring effect.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art, and the invention provides the high-dynamic image blur detection and verification device, which solves the problems of direct image blur detection and high-dynamic image deblurring effect verification. The device consists of a measuring standard and a composite light source, wherein the central part of the composite light source is a stroboscopic light source, the peripheral part of the stroboscopic light source is a normally bright light source, a photoetching glass substrate in the measuring standard is respectively provided with a coding mark point and a circular feature point in a photoetching mode at the corresponding part of the stroboscopic light source, the coding mark point and the stroboscopic light source can effectively inhibit image blurring, the circular feature point and the normally bright light source are fuzzy parts in an image, the image blurring can be directly detected and calculated according to the fuzzy part image, and the deblurred image and the clear image are compared to realize image deblurring effect verification and qualitative evaluation. The device combines the existing image processing method to solve the problems of image fuzzy detection and verification under the high dynamic condition, and has the advantages of simple structure, good integration and high application value.
The technical scheme adopted by the invention is a high dynamic image fuzzy detection and verification device, which is characterized in that the device is formed by adopting a composite light source structure and a measuring reference consisting of coding mark points and circular characteristic points;
the measuring reference is composed of a photoetching glass substrate 1, a glass cover plate 2, a substrate fixing screw 3 and an integral connecting screw 4; wherein, the middle part of the upper surface of the photoetching glass substrate 1 is photoetched with 9 coding mark points 1a for acquiring clear parts in images; 114 circular feature points 1b are distributed around the image to extract fuzzy parts in the image; the photoetching glass substrate 1 is arranged in the inner cavity of the glass cover plate 2; the glass cover plate 2 is a square frame-shaped cover plate, and two through holes are processed at each corner, and the total number of the through holes is eight; four countersunk threaded holes are processed on the lower surface of the glass cover plate 2, and the photoetching glass substrate 1 and the glass cover plate 2 are fixed by the substrate fixing screws 3 through the countersunk threaded holes;
the composite light source structure consists of a plane normally-bright light source and a stroboscopic light source; the upper surface of the lamp holder 7 is provided with an LED lamp, the middle part corresponding to the mask 6 is not provided with the LED lamp, and the lamp holder 7 and the LED lamp form a plane normally-bright light source; a groove is formed in the middle of the lamp holder 7, the stroboscopic light source 8 is arranged in the groove of the lamp holder 7 and a through hole in the middle of the mask 6, four threaded holes are formed in the middle of the lamp holder 7, and the stroboscopic light source 8 is fixed in the groove of the lamp holder 7 through a light source fixing screw 9;
the upper end and the lower end of the shell 5 are respectively of a stepped structure, the mask 6 is arranged in the stepped structure at the upper end of the shell 5, eight positioning threaded holes are processed on four frames on the shell 5, and the stepped structure at the lower end of the shell 5 is arranged on the lamp holder 7; 4 through holes are processed at the bottom of the lamp holder 7, and the lamp holder 7 is fixedly connected with the shell 5 by using a bottom plate connecting screw 10 to penetrate through the through holes at the bottom of the lamp holder 7;
and (3) fastening the glass cover plate 2 and a shell 5 in the composite light source by using an integral connecting screw 4 to finish the assembly of the integral measuring device.
The device has the beneficial effects that the device adopts a composite light source structure and combines a measuring standard containing the coding mark points and the circular characteristic points. The coding mark points are matched with a stroboscopic light source, so that image blurring can be effectively inhibited, and clear parts are formed in the images; the circular feature points and the normally-bright light source are matched in the image to form a fuzzy part, direct detection can be performed according to the fuzzy part image, image blurring can be calculated, and the deblurred image can be compared with a clear image to verify the deblurring effect of the image and qualitatively evaluate the deblurred image. The method can simultaneously acquire the clear characteristics and the fuzzy characteristics of the detected target in a single-frame image, has the function of integrating motion fuzzy detection and verification, can realize the qualitative evaluation of image fuzzy under the condition of high dynamic, and has the advantages of good integration and applicability, simple structure and convenient operation.
Drawings
Fig. 1 is a structural view of a high-dynamic image blur detection and verification apparatus, fig. 2 is a sectional view a-a of the entire apparatus of fig. 1, fig. 3 is a sectional view B-B of fig. 2, and fig. 4 is a view along direction C of fig. 2.
The LED lamp comprises a photoetching glass substrate 1, a coding mark point 1a, a circular characteristic point 1b, a glass cover plate 2, a substrate fixing screw 3, an integral connecting screw 4, a machine shell 5, a mask 6, a lamp holder 7, a stroboscopic light source 8, a light source fixing screw 9, a bottom plate connecting screw 10 and an LED lamp 11.
Detailed Description
The following detailed description of the invention refers to the accompanying drawings.
A high dynamic image blur detection and verification device is shown in figures 1, 2, 3 and 4, and comprises a measurement reference and a composite light source. The stroboscopic light source 8 is a custom light source with the model of Flat106D-W-BD-24V, the lamp holder 7 and the LED lamp 11 on the upper surface are custom structures, and the external dimension of the photoetching glass substrate 1 in the measurement reference is 110mm multiplied by 3 mm.
Firstly, a measuring device is installed: placing the photoetching glass substrate 1 into an inner cavity at the upper end of a glass cover plate 2, and fixing the photoetching glass substrate by four substrate fixing screws 3 through countersunk threaded holes until the measurement reference part is completely installed;
and mounting the composite light source, placing the mask 6 in the upper end stepped structure of the machine shell 5, pressing the mask 6 by using the measuring standard, penetrating the through hole of the glass cover plate 2 by using the connecting bolt 4, and screwing and fixing the connecting bolt on the upper surface of the machine shell 5. And then putting the stroboscopic light source 8 into the middle groove part of the lamp holder 7 without the LED lamp, and fixing the stroboscopic light source 8 by using four light source fixing screws 9. The part is installed in the lower end ladder structure of the machine shell 5 and is fixedly connected by a bottom plate connecting screw 10, so that the whole measuring device is assembled.
The device of the invention is used for detecting and verifying the image blur under the high dynamic condition: firstly, a measuring standard and a composite light source are installed and fixedly connected to a measured target, wherein the measured target is a numerical control machine tool workbench in a laboratory in the embodiment. And then controlling the measuring device to perform high-speed motion and image acquisition under different parameters, detecting motion blur according to the acquired images, performing image deblurring, and finally extracting a clear part in the image and comparing the clear part with the deblurred blurred part to verify the image deblurring effect.
When the measuring device is used for detecting and verifying the motion image blur, firstly, a camera is calibrated by combining a Zhang calibration method and a high-precision chessboard calibration board, then the measuring device is arranged on a numerical control machine workbench, and a machine tool is started to drive the measuring device to move according to a set track under the high-speed motion conditions of 1m/min, 3m/min, 5m/min and 7 m/min.
The coded mark points and the circular characteristic points on the photoetching glass substrate 1 are shown in figure 1 and represent the motion information of the numerical control machine tool workbench. The 114 round feature points 1b around the image are used for extracting the blurred part of the image to perform solution calculation, and the 9 coding mark points 1a in the central part are used for extracting the sharp part of the image to perform contrast verification.
In the process of device movement, a camera is controlled to acquire a motion sequence image of a measuring device, because the coding mark points are matched with a stroboscopic light source to be adjusted according to camera parameters, the image blur can be effectively inhibited, the image is a clear part in the image, the image can be regarded as a theoretically unambiguous image, and the circular characteristic points are matched with a normally bright light source to generate motion blur due to the influence of factors such as camera exposure time, the image blur part in the image can be directly detected and calculated according to a blurred part image, namely, the blurring direction and the blurring scale of the motion blur are solved by analyzing the position information of the circular characteristic points in a single frame image, so that the solution of a blurring kernel is completed, the image characteristics after the deblurring processing can be obtained by combining with the existing image restoration algorithm and utilizing the repeated iteration of the blurring kernel, and the deblurring of the sequence image can be completed by traversing each frame image in the same way, and finally, extracting a theoretical clear image represented by the coding mark points in the sequence image and comparing the theoretical clear image with the deblurred image, so that the image blur detection and verification under the high-dynamic condition can be realized.
The invention has the characteristics of having the function of integrating motion blur detection and verification, combining a combined light source structure and a measuring reference containing a coding mark point and a circular characteristic point into a whole, simultaneously acquiring the clear characteristic and the blur characteristic of a measured target in a single-frame image, realizing the qualitative verification and evaluation of image blur under the high dynamic condition, along with good integration and applicability, simple and flexible structure, high efficiency and convenience in operation.
Claims (1)
1. A high dynamic image fuzzy detection and verification device is characterized in that the device is composed of a composite light source structure and a measuring reference consisting of a coding mark point and a circular characteristic point;
the measuring datum consists of a photoetching glass substrate (1), a glass cover plate (2), a substrate fixing screw (3) and an integral connecting screw (4); 9 coding mark points (1a) are photoetched in the middle of the upper surface of the photoetching glass substrate (1) and used for acquiring clear parts in an image; 114 circular feature points (1b) are distributed around the image for extracting fuzzy parts in the image; the photoetching glass substrate (1) is arranged in the inner cavity of the glass cover plate (2); the glass cover plate (2) is a square frame-shaped cover plate, and two through holes are processed at each corner; four countersunk threaded holes are processed on the lower surface of the glass cover plate (2), and the photoetching glass substrate (1) and the glass cover plate (2) are fixed by the substrate fixing screws (3) through the countersunk threaded holes;
the composite light source structure consists of a plane normally-bright light source and a stroboscopic light source; the upper surface of the lamp holder (7) is provided with an LED lamp, the middle part corresponding to the mask (6) is not provided with the LED lamp, and the lamp holder (7) and the LED lamp form a plane normally-bright light source; a groove is formed in the middle of the lamp holder (7), the stroboscopic light source (8) is arranged in the groove of the lamp holder (7) and a through hole in the middle of the mask (6), and the stroboscopic light source (8) is fixed in the groove of the lamp holder (7) through a threaded hole in the middle of the lamp holder (7) by a light source fixing screw (9);
the upper end and the lower end of the shell (5) are respectively of a stepped structure, the mask (6) is arranged in the stepped structure at the upper end of the shell (5), eight positioning threaded holes are processed on four frames on the upper surface of the shell (5), and the stepped structure at the lower end of the shell (5) is arranged on the lamp holder (7); 4 through holes are processed at the bottom of the lamp holder (7), and a bottom plate connecting screw (10) penetrates through the through holes at the bottom of the lamp holder (7) to fixedly connect the lamp holder (7) with the shell (5);
the coding mark points are matched with a stroboscopic light source to be adjusted according to the camera parameters;
and (3) fastening the glass cover plate (2) and a shell (5) in the composite light source by using an integral connecting screw (4) to finish the assembly of the integral measuring device.
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| CN201810984606.1A CN109325939B (en) | 2018-08-28 | 2018-08-28 | High dynamic image fuzzy detection and verification device |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102859389A (en) * | 2010-04-30 | 2013-01-02 | 伊斯曼柯达公司 | Range measurement using a coded aperture |
| CN106097256A (en) * | 2016-05-31 | 2016-11-09 | 南京邮电大学 | A kind of video image fuzziness detection method based on Image Blind deblurring |
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| CN1267766C (en) * | 2003-12-26 | 2006-08-02 | 四川大学 | Method for realizing high speed moving article 3D profile measurement using stroboscopic structure lighting |
| US9652833B2 (en) * | 2014-03-18 | 2017-05-16 | Honeywell International, Inc. | Point spread function estimation for motion invariant images |
| CN104537381B (en) * | 2014-12-30 | 2017-09-12 | 华中科技大学 | A kind of fuzzy image recognition method based on fuzzy invariant features |
| CN107971831B (en) * | 2017-11-07 | 2019-05-28 | 大连理工大学 | Numerically-controlled machine tool high dynamic any profile errors monocular 6 DOF measurement method on a large scale |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102859389A (en) * | 2010-04-30 | 2013-01-02 | 伊斯曼柯达公司 | Range measurement using a coded aperture |
| CN106097256A (en) * | 2016-05-31 | 2016-11-09 | 南京邮电大学 | A kind of video image fuzziness detection method based on Image Blind deblurring |
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