CN102749183A - System, method and device for detecting projection picture of projector - Google Patents
System, method and device for detecting projection picture of projector Download PDFInfo
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- CN102749183A CN102749183A CN2012101647787A CN201210164778A CN102749183A CN 102749183 A CN102749183 A CN 102749183A CN 2012101647787 A CN2012101647787 A CN 2012101647787A CN 201210164778 A CN201210164778 A CN 201210164778A CN 102749183 A CN102749183 A CN 102749183A
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Abstract
The invention discloses a system, a method and a device for detecting a projection picture of a projector. The projection picture projected onto a curtain through the projector is converted into projection picture signals through an image filming device, and the projection picture signals are collected to a computer. The computer conducts image analysis on the collected projection picture signals and confirms that the projector is good in time sequence phase during picture projection. Due to the fact that the manual detecting in the prior art is abandoned, the computer is used for conducting the image analysis of the projection picture signals. Personal factors do not exist in a detecting process, judging standard is uniform, and misjudgment rate is reduced.
Description
Technical field
The present invention relates to the detection technique of projector, detection system, method and the device of particularly a kind of projector projected picture.
Background technology
After producing projector, whether the sequential phase place is good all need to test the projected picture that projector's projection goes out, and the projected picture that just projects is compared with test pictures, and is indeformable and undistorted.At present, the testing process to projector's projected picture is:
At first, test pictures is set, such as five circle picture views as shown in Figure 1; 4 the grey squares that on 4 angles, are symmetrically distributed in the picture, there is 1 grey square at the center, is respectively the center of circle with the center of 4 grey squares on 4 angles; Draw circle; Grey square center with the center is the center of circle, draws circle, and these 5 circles all are tangential on the frame of picture;
Then, projector is test pictures, on curtain, on curtain, obtains projected picture such as the image projection of Fig. 1;
At last; Whether 5 circles that artificial cognition is projected in the projected picture on the curtain are tangent with frame, if confirm that projected picture is normal; Just projector's sequential phase place when projected picture is good; If not, confirm that then projected picture is undesired, just projector's sequential phase place when projected picture is bad.
Adopt aforesaid way to confirm whether projector's sequential phase place when projected picture is good; Exist shortcoming: owing to be whether artificial naked eyes are tangent with frame according to 5 circles that are projected in the projected picture on the curtain; Confirm whether projector's sequential phase place when projected picture is good, subjective, and criterion is not easy unanimity; Be easy to erroneous judgement, and need labor intensive.
Summary of the invention
In view of this, the present invention provides the detection system of a kind of projector projected picture, and this system can detect projector's projected picture under the situation of criterion unanimity, reduces False Rate.
The present invention also provides the detection method of a kind of projector projected picture, and this method can detect projector's projected picture under the situation of criterion unanimity, reduces False Rate.
The present invention also provides the pick-up unit of a kind of projector projected picture, and this device can detect projector's projected picture under the situation of criterion unanimity, reduces False Rate.
Technical scheme of the present invention is achieved in that
The detection system of a kind of projector projected picture, this system comprises: signal generator, projector, curtain, image-pickup device and computing machine, wherein,
Signal generator is used to generate the test pictures signal, sends to projector;
Projector is used for behind signal generator acceptance test picture signal, with the test pictures signal projection to curtain;
Curtain is used to show the projected picture that obtains;
Image-pickup device after being used for projected picture with curtain and converting the projected picture signal into, sends to computing machine;
Computing machine is used for the projected picture signal that receives from image-pickup device is carried out graphical analysis, confirms whether the sequential phase place of projector's projected picture is good.
Said image-pickup device is the CCD camera.
Said computing machine also comprises: receiver module, ashing module, logging modle and comparison module, wherein,
Receiver module is used to receive the projected picture signal, and said projected picture signal is the digital signal that the projected picture of curtain is converted to by image-pickup device;
The ashing module; Be used for adopting the zone, the center of circle of distinguishing projected picture the projected picture signal to be carried out first ashing treatment with the first threshold of circle and frame; Obtain the center point coordinate in zone, the center of circle; With this center point coordinate is the center of circle, adopts the radius that is provided with to carry out circle respectively and calculates, and obtains setting the circular coordinate information of number; Adopt second threshold value of distinguishing frame and background that the projected picture signal is carried out second ashing treatment, four points of outermost are sketched the contours of rectangle according to the point of these four outermost around obtaining, and obtain rectangular coordinates information;
Logging modle is used to write down the circular coordinate information of the setting number that the ashing module obtains and rectangular coordinates information;
Comparison module is used for circular coordinate information and the comparison of rectangular coordinates information with the setting number of logging modle, judges to overlap whether the intersection point number is the intersection point number in the test pictures; If; The sequential phase place of then confirming projector's projected picture is good, if not, confirm that the sequential phase place of projector's projected picture is bad; Said test pictures is the picture that projector is adopted when projection, projects to be projected picture behind the curtain.
The detection method of a kind of projector projected picture, this method comprises:
Projector's projective tests picture obtains projected picture on curtain;
Image-pickup device sends to computing machine after converting the projected picture of curtain into the projected picture signal;
Computing machine carries out graphical analysis with the projected picture signal, confirms whether the sequential phase place of projector's projected picture is good.
Said computing machine carries out graphical analysis with the projected picture signal, confirms whether good process is for the sequential phase place of projector's projected picture:
Adopt the zone of distinguishing in the projected picture, the center of circle projected picture signal to be carried out first ashing treatment with the first threshold of circle and frame; Obtain the center point coordinate in zone, the center of circle; With this center point coordinate is the center of circle; Adopt the radius that is provided with to carry out circle respectively and calculate, obtain setting the circular coordinate information of number;
Adopt second threshold value of distinguishing frame and background that the projected picture signal is carried out second ashing treatment, four points of outermost are sketched the contours of rectangle according to the point of these four outermost around obtaining, and obtain rectangular coordinates information;
Circular coordinate information and the rectangular coordinates information of setting number are compared; Judge to overlap whether the intersection point number is the intersection point number in the test pictures, if confirm that then the sequential phase place of projector's projected picture is good; If, do not confirm that the sequential phase place of projector's projected picture is bad.
The circle of said setting number is five, and wherein, the radius of four circles is identical.
Intersection point number in the said test pictures is ten.
The pick-up unit of a kind of projector projected picture comprises: receiver module, ashing module, logging modle and comparison module, wherein,
Receiver module is used to receive the projected picture signal, and said projected picture signal is the digital signal that the projected picture of curtain is converted to by image-pickup device;
The ashing module; Be used for adopting the zone, the center of circle of distinguishing projected picture the projected picture signal to be carried out first ashing treatment with the first threshold of circle and frame; Obtain the center point coordinate in zone, the center of circle; With this center point coordinate is the center of circle, adopts the radius that is provided with to carry out circle respectively and calculates, and obtains setting the circular coordinate information of number; Adopt second threshold value of distinguishing frame and background that the projected picture signal is carried out second ashing treatment, four points of outermost are sketched the contours of rectangle according to the point of these four outermost around obtaining, and obtain rectangular coordinates information;
Logging modle is used to write down the circular coordinate information of the setting number that the ashing module obtains and rectangular coordinates information;
Comparison module is used for circular coordinate information and the comparison of rectangular coordinates information with the setting number of logging modle, judges to overlap whether the intersection point number is the intersection point number in the test pictures; If; The sequential phase place of then confirming projector's projected picture is good, if not, confirm that the sequential phase place of projector's projected picture is bad; Said test pictures is the picture that projector is adopted when projection, projects to be projected picture behind the curtain.
Can find out from such scheme; The detection system that the present invention adopts, method and device adopt image-pickup device to convert the projected picture signal into the projected picture that projector projects to curtain; With the projected picture signals collecting in computing machine; By computing machine the projected picture signal of gathering is carried out graphical analysis, confirm that projector's sequential phase place when projected picture is good.Because the present invention detects unlike the such manual type that adopts of prior art, but carries out the graphical analysis of projected picture signal by computing machine, does not have human factor in the testing process, criterion is consistent, reduces False Rate.
Description of drawings
Fig. 1 is the test pictures synoptic diagram whether the sequential phase place is used in the good process for detecting projector in the prior art at projected picture;
The detection system structural representation of projector's projected picture that Fig. 2 provides for the embodiment of the invention;
The computing machine that Fig. 3 provides by the embodiment of the invention to reception projected picture signal carry out the method flow diagram of pattern analysis;
Fig. 4 carries out image 1 synoptic diagram that graphical analysis obtains for the embodiment of the invention adopts computing machine to the projected picture signal;
Fig. 5 carries out image 2 synoptic diagram that graphical analysis obtains for the embodiment of the invention adopts computing machine to the projected picture signal;
The detection method process flow diagram of projector's projected picture that Fig. 6 provides for the embodiment of the invention;
The pick-up unit structural representation of projector's projected picture that Fig. 7 provides for the embodiment of the invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is done further explain.
Can find out from background technology; Detect whether projector's sequential phase place when projected picture well is that projector is projected in projected picture on the curtain in the prior art, judge that artificially projected picture is normal, like this; Subjectivity is more intense; Criterion is not easy unanimity, is easy to erroneous judgement, and needs labor intensive.
Therefore; The present invention is in order to overcome this problem; The projected picture that projector is projected to curtain adopts image-pickup device to convert the projected picture signal into; The projected picture signals collecting in computing machine, is carried out graphical analysis by computing machine to the projected picture signal of gathering, confirm that projector's sequential phase place when projected picture is good.Like this, do not have human factor in the testing process, criterion is consistent, reduces False Rate.
The detection system structural representation of projector's projected picture that Fig. 2 provides for the embodiment of the invention comprises: signal generator, projector, curtain, image-pickup device and computing machine, wherein,
Signal generator is used to generate the test pictures signal, sends to projector;
Projector is used for behind signal generator acceptance test picture signal, with the test pictures signal projection to curtain;
Curtain is used to show the projected picture that obtains;
Image-pickup device after being used for projected picture with curtain and converting the projected picture signal into, sends to computing machine;
Computing machine is used for the projected picture signal that receives from image-pickup device is carried out graphical analysis, confirms whether the sequential phase place of projector's projected picture is good.
In this system, image-pickup device can convert optical image into digital signal for charge coupled cell (CCD) camera.
In this system, how computing machine specifically carries out graphical analysis to reception projected picture signal, confirms whether the sequential phase place of projector's projected picture well is the key point that the embodiment of the invention can solve inventive problem, below is elaborated.
The computing machine that Fig. 3 provides by the embodiment of the invention to reception projected picture signal carry out the method flow diagram of pattern analysis, suppose that test pictures is a picture shown in Figure 1, its concrete steps are:
In Fig. 1; Various colors is adopted with five circles and frame in zone, the center of circle; So when carrying out first ashing treatment, when just carrying out first binary conversion treatment, the first threshold of setting can be distinguished zone, the center of circle and five circles and frame; Thereby just can confirm the zone, five centers of circle in the projected picture, with the centre coordinate in the zone, five centers of circle as five central coordinate of circle;
As can beappreciated from fig. 1, in the radius that sets, wherein four outer central coordinate of circle adopt identical radius, and the central coordinate of circle at another center adopts different radiuses, and this radius that sets computing machine is in advance known;
In Fig. 1, reset second threshold value of binary conversion treatment, this second threshold value can distinguish frame and background area, carries out second ashing treatment then;
In this step, because the frame in the projected picture signal be a white,, the white point of these four outermost is sketched the contours of rectangle so after ashing treatment, confirm the white point of outermost at four direction up and down, write down the coordinate information of rectangular shaped rim;
Frame coordinate information in the coordinate information of step 304, five circles that will obtain and the projected picture that obtains compares, and confirms whether the intersecting point coordinate number that overlaps is ten, if then change step 305 over to and carry out; Otherwise, change step 306 over to and carry out;
As can beappreciated from fig. 3; Adopt computing machine that the projected picture signal is carried out graphical analysis; In fact be exactly the secondary ashing treatment projected picture signal that adopts different threshold values, obtain five central coordinate of circle and frame coordinate information respectively, and then calculate five circular coordinate informations according to five central coordinate of circle; Relatively whether intersection point quantity is the intersection point quantity that test pictures showed then, thereby whether the sequential phase place of confirming projector's projected picture is good.Employing computing machine as shown in Figure 4 carries out image 1 synoptic diagram that graphical analysis obtains to the projected picture signal, from figure, can confirm that the sequential phase place of projector's projected picture is good; Employing computing machine as shown in Figure 5 carries out image 2 synoptic diagram that graphical analysis obtains to the projected picture signal, from figure, can confirm that the sequential phase place of projector's projected picture is bad.
The detection method process flow diagram of projector's projected picture that Fig. 6 provides for the embodiment of the invention, its concrete steps are:
Wherein, the detailed process of step 603 such as Fig. 3 are said.
The pick-up unit structural representation of projector's projected picture that Fig. 7 provides for the embodiment of the invention, this device is exactly the computing machine that the projected picture signal is carried out graphical analysis, comprising: receiver module, ashing module, logging modle and comparison module, wherein,
Receiver module is used to receive the projected picture signal, and said projected picture signal is the digital signal that the projected picture of curtain is converted to by image-pickup device;
The ashing module; Be used for adopting the zone, the center of circle of distinguishing projected picture the projected picture signal to be carried out first ashing treatment with the first threshold of circle and frame; Obtain the center point coordinate in zone, the center of circle; With this center point coordinate is the center of circle, adopts the radius that is provided with to carry out circle respectively and calculates, and obtains setting the circular coordinate information of number; Adopt second threshold value of distinguishing frame and background that the projected picture signal is carried out second ashing treatment, four points of outermost are sketched the contours of rectangle according to the point of these four outermost around obtaining, and obtain rectangular coordinates information;
Logging modle is used to write down the circular coordinate information of the setting number that the ashing module obtains and rectangular coordinates information;
Comparison module is used for circular coordinate information and the comparison of rectangular coordinates information with the setting number of logging modle, judges to overlap whether the intersection point number is the intersection point number in the test pictures; If; The sequential phase place of then confirming projector's projected picture is good, if not, confirm that the sequential phase place of projector's projected picture is bad; Said test pictures is the picture that projector is adopted when projection, projects to be projected picture behind the curtain.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope that the present invention protects.
Claims (8)
1. the detection system of projector's projected picture is characterized in that, this system comprises: signal generator, projector, curtain, image-pickup device and computing machine, wherein,
Signal generator is used to generate the test pictures signal, sends to projector;
Projector is used for behind signal generator acceptance test picture signal, with the test pictures signal projection to curtain;
Curtain is used to show the projected picture that obtains;
Image-pickup device after being used for projected picture with curtain and converting the projected picture signal into, sends to computing machine;
Computing machine is used for the projected picture signal that receives from image-pickup device is carried out graphical analysis, confirms whether the sequential phase place of projector's projected picture is good.
2. detection system as claimed in claim 1 is characterized in that, said image-pickup device is the CCD camera.
3. detection system as claimed in claim 1 is characterized in that, said computing machine also comprises: receiver module, ashing module, logging modle and comparison module, wherein,
Receiver module is used to receive the projected picture signal, and said projected picture signal is the digital signal that the projected picture of curtain is converted to by image-pickup device;
The ashing module; Be used for adopting the zone, the center of circle of distinguishing projected picture the projected picture signal to be carried out first ashing treatment with the first threshold of circle and frame; Obtain the center point coordinate in zone, the center of circle; With this center point coordinate is the center of circle, adopts the radius that is provided with to carry out circle respectively and calculates, and obtains setting the circular coordinate information of number; Adopt second threshold value of distinguishing frame and background that the projected picture signal is carried out second ashing treatment, four points of outermost are sketched the contours of rectangle according to the point of these four outermost around obtaining, and obtain rectangular coordinates information;
Logging modle is used to write down the circular coordinate information of the setting number that the ashing module obtains and rectangular coordinates information;
Comparison module is used for circular coordinate information and the comparison of rectangular coordinates information with the setting number of logging modle, judges to overlap whether the intersection point number is the intersection point number in the test pictures; If; The sequential phase place of then confirming projector's projected picture is good, if not, confirm that the sequential phase place of projector's projected picture is bad; Said test pictures is the picture that projector is adopted when projection, projects to be projected picture behind the curtain.
4. the detection method of projector's projected picture is characterized in that, this method comprises:
Projector's projective tests picture obtains projected picture on curtain;
Image-pickup device sends to computing machine after converting the projected picture of curtain into the projected picture signal;
Computing machine carries out graphical analysis with the projected picture signal, confirms whether the sequential phase place of projector's projected picture is good.
5. detection method as claimed in claim 4 is characterized in that said computing machine carries out graphical analysis with the projected picture signal, confirms whether good process is for the sequential phase place of projector's projected picture:
Adopt the zone of distinguishing in the projected picture, the center of circle projected picture signal to be carried out first ashing treatment with the first threshold of circle and frame; Obtain the center point coordinate in zone, the center of circle; With this center point coordinate is the center of circle; Adopt the radius that is provided with to carry out circle respectively and calculate, obtain setting the circular coordinate information of number;
Adopt second threshold value of distinguishing frame and background that the projected picture signal is carried out second ashing treatment, four points of outermost are sketched the contours of rectangle according to the point of these four outermost around obtaining, and obtain rectangular coordinates information;
Circular coordinate information and the rectangular coordinates information of setting number are compared; Judge to overlap whether the intersection point number is the intersection point number in the test pictures, if confirm that then the sequential phase place of projector's projected picture is good; If, do not confirm that the sequential phase place of projector's projected picture is bad.
6. detection method as claimed in claim 5 is characterized in that, the circle of said setting number is five, and wherein, the radius of four circles is identical.
7. detection method as claimed in claim 5 is characterized in that, the intersection point number in the said test pictures is ten.
8. the pick-up unit of projector's projected picture is characterized in that, comprising: receiver module, ashing module, logging modle and comparison module, wherein,
Receiver module is used to receive the projected picture signal, and said projected picture signal is the digital signal that the projected picture of curtain is converted to by image-pickup device;
The ashing module; Be used for adopting the zone, the center of circle of distinguishing projected picture the projected picture signal to be carried out first ashing treatment with the first threshold of circle and frame; Obtain the center point coordinate in zone, the center of circle; With this center point coordinate is the center of circle, adopts the radius that is provided with to carry out circle respectively and calculates, and obtains setting the circular coordinate information of number; Adopt second threshold value of distinguishing frame and background that the projected picture signal is carried out second ashing treatment, four points of outermost are sketched the contours of rectangle according to the point of these four outermost around obtaining, and obtain rectangular coordinates information;
Logging modle is used to write down the circular coordinate information of the setting number that the ashing module obtains and rectangular coordinates information;
Comparison module is used for circular coordinate information and the comparison of rectangular coordinates information with the setting number of logging modle, judges to overlap whether the intersection point number is the intersection point number in the test pictures; If; The sequential phase place of then confirming projector's projected picture is good, if not, confirm that the sequential phase place of projector's projected picture is bad; Said test pictures is the picture that projector is adopted when projection, projects to be projected picture behind the curtain.
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| CN103267630A (en) * | 2013-04-23 | 2013-08-28 | 日立数字映像(中国)有限公司 | Optical performance detection device of liquid crystal projector |
| CN103905762A (en) * | 2014-04-14 | 2014-07-02 | 上海索广电子有限公司 | Method for automatically detecting projection picture for projection module |
| CN104385359A (en) * | 2014-09-30 | 2015-03-04 | 上海和鹰机电科技股份有限公司 | Material paving device and material paving method of cutting machine |
| CN105987805A (en) * | 2015-02-02 | 2016-10-05 | 宁波舜宇光电信息有限公司 | Projection structured light system detection method |
| CN106537252A (en) * | 2014-05-06 | 2017-03-22 | 宁波舜宇光电信息有限公司 | Light-deflection three-dimensional imaging device and projection device, and application thereof |
| CN106773160A (en) * | 2016-12-15 | 2017-05-31 | 东旭科技集团有限公司 | The hand inspection servicing unit of glass substrate, inspection system and its inspection method |
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| CN110823516A (en) * | 2019-09-27 | 2020-02-21 | 深圳市火乐科技发展有限公司 | Test method and related equipment |
| CN110823515A (en) * | 2018-08-14 | 2020-02-21 | 宁波舜宇光电信息有限公司 | Structured light projection module multi-station detection device and detection method thereof |
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| CN108225738A (en) * | 2017-12-25 | 2018-06-29 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of quick device and method for determining lifting head-up display design eye position |
| CN110823515A (en) * | 2018-08-14 | 2020-02-21 | 宁波舜宇光电信息有限公司 | Structured light projection module multi-station detection device and detection method thereof |
| CN110823515B (en) * | 2018-08-14 | 2022-02-01 | 宁波舜宇光电信息有限公司 | Structured light projection module multi-station detection device and detection method thereof |
| CN110823516A (en) * | 2019-09-27 | 2020-02-21 | 深圳市火乐科技发展有限公司 | Test method and related equipment |
| CN110823516B (en) * | 2019-09-27 | 2021-04-30 | 深圳市火乐科技发展有限公司 | Test method and related equipment |
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Application publication date: 20121024 |