CN106780521A - The detection method of screen light leak, system and device - Google Patents
The detection method of screen light leak, system and device Download PDFInfo
- Publication number
- CN106780521A CN106780521A CN201611124086.4A CN201611124086A CN106780521A CN 106780521 A CN106780521 A CN 106780521A CN 201611124086 A CN201611124086 A CN 201611124086A CN 106780521 A CN106780521 A CN 106780521A
- Authority
- CN
- China
- Prior art keywords
- screen
- picture
- light leak
- electronic equipment
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N2017/008—Diagnosis, testing or measuring for television systems or their details for television teletext
Abstract
The present invention relates to a kind of detecting system detection method of screen light leak, system and device, it is the screen picture that black picture is shown on the screen for obtain electronic equipment, determine the fringe region in screen picture, obtain the color gray value of each pixel in fringe region, calculate the number of color gray value more than the target pixel points of pre-set color gray scale permissible value, number and predetermined number according to target pixel points judge screen whether light leak.This process can control to complete by computer, realize automatic detection, and detection efficiency is high, and judge that the standard of screen light leak is objective consistent every time, need not rely upon artificial judgment, can improve the Stability and veracity of screen light leak test.
Description
Technical field
The present invention relates to electronic equipment detection technique field, more particularly to a kind of detection method, the system of screen light leak
And device.
Background technology
For the electronic equipment for possessing display screen, in electronic equipment using preceding needing to carry out various indexs to screen-picture
Detection, detected including to screen light leak.By taking television set as an example, television set using be preceding accomplished by detect its screen
Light leak.
In conventional art, screen light leak test is typically to show black picture on electronic equipment screen, and testing staff is led to
Cross visually to observe the display effect at electronic equipment screen edge, determined with observing result screen whether light leak, accuracy compared with
It is low.As a example by detecting television screen light leak, after black picture is shown on television screen, testing staff's observation television machine screen
Curtain edge whether there is hot spot phenomenon, if it is present determining the television screen light leak.Screen is carried out by this kind of mode
Light leak test, the result do not observed in the same time may be different, cause to judge screen whether the technical indicator of light leak not fully
Cause, so as to influence the accuracy of screen light leak test.
The content of the invention
Based on this, it is necessary to for the relatively low problem of traditional screen light leak test mode accuracy, there is provided a kind of screen
The detection method of light leak, system and device.
A kind of detection method of screen light leak, comprises the following steps：
The screen picture of black picture is shown on the screen for obtaining electronic equipment；
Determine the fringe region in screen picture, fringe region is the distance with the border of screen picture less than or equal to default
The screen picture region of distance；
The color gray value of each pixel in fringe region is obtained, color gray value is calculated and is permitted more than pre-set color gray scale
The number of the target pixel points being worth perhaps；
If the number of target pixel points is more than predetermined number, screen light leak is judged.
A kind of detecting system of screen light leak, including：
Image acquisition unit, the screen picture for showing black picture on the screen for obtaining electronic equipment；
Edge determining unit, for determining the fringe region in screen picture, fringe region is the border with screen picture
Distance less than or equal to predeterminable range screen picture region；
Gray scale acquiring unit, the color gray value for obtaining each pixel in fringe region；
Pixel computing unit, for calculating color gray value more than the target pixel points of pre-set color gray scale permissible value
Number；
Judging unit, for when the number of target pixel points is more than predetermined number, judging screen light leak.
A kind of detection means of screen light leak, including host computer, filming apparatus and remote-controlled launcher；
Remote-controlled launcher is used for remote controlled electronic device, and filming apparatus are used to shoot the on-screen displays of electronic equipment；
Wherein, electronic equipment includes remote-receiver；
Host computer drives remote-controlled launcher to send remote signal to electronic equipment, after electronic equipment receives remote signal
Black picture is shown on screen；
Host computer obtains the screen picture that black picture is shown on the screen of electronic equipment by filming apparatus；
Host computer determines the fringe region in screen picture, and wherein fringe region is small with the distance on the border of screen picture
In the screen picture region equal to predeterminable range；
Host computer obtains the color gray value of each pixel in fringe region, calculates color gray value and is more than pre-set color
The number of the target pixel points of gray scale permissible value；If the number of target pixel points is more than predetermined number, screen light leak is judged.
Detecting system detection method, system and device according to above-mentioned screen light leak, it is the screen for obtaining electronic equipment
The screen picture of upper display black picture, determines the fringe region in screen picture, each pixel in acquisition fringe region
Color gray value, calculates number of the color gray value more than the target pixel points of pre-set color gray scale permissible value, according to target picture
The number and predetermined number of vegetarian refreshments judge screen whether light leak.This process can control to complete by computer, realize automatic
Detection, detection efficiency is high, and judges that the standard of screen light leak is objective consistent every time, need not rely upon artificial judgment, Ke Yiti
The Stability and veracity of screen light leak test high.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the detection method of screen light leak in one of embodiment；
Fig. 2 is the structural representation of the detecting system of screen light leak in one of embodiment；
Fig. 3 is the structural representation of the detecting system of screen light leak in one of embodiment；
Fig. 4 is the structural representation of the detecting system of screen light leak in one of embodiment；
Fig. 5 is the structural representation of the detection means of screen light leak in one of embodiment；
Fig. 6 is the structural representation of the detection means of screen light leak in one of embodiment；
Fig. 7 is the structural representation of the detection means of screen light leak in one of embodiment；
Fig. 8 is the structural representation of the detection means of screen light leak in one of embodiment；
Fig. 9 is the device connection diagram of the detection method of television screen light leak in one of specific embodiment；
Figure 10 is the actual device figure of the detection method of television screen light leak in one of specific embodiment；
Figure 11 is the schematic flow sheet of the detection method of television screen light leak in one of specific embodiment.
Specific embodiment
To make the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, to this
Invention is described in further detail.It should be appreciated that specific embodiment described herein is only used to explain the present invention,
Do not limit protection scope of the present invention.
It is shown in Figure 1, it is the schematic flow sheet of the detection method of screen light leak of the invention.Screen in the embodiment
The detection method of light leak, comprises the following steps：
Step S101：The screen picture of black picture is shown on the screen for obtaining electronic equipment；
In this step, in order to be able to preferably judge screen whether light leak, black picture conduct can be shown on screen
Reverse contrast；
Step S102：Determine the fringe region in screen picture, fringe region is small with the distance on the border of screen picture
In the screen picture region equal to predeterminable range；
In this step, because the region of screen light leak is concentrated mainly on screen edge, therefore screen picture can be directed to
Fringe region detected that predeterminable range can be adjusted according to actual needs；
Step S103：The color gray value of each pixel in fringe region is obtained, color gray value is calculated more than default
The number of the target pixel points of color gray scale permissible value；
Step S104：If the number of target pixel points is more than predetermined number, screen light leak is judged.
In this step, the face of the pixel of the color gray value than not light-leaking area of the pixel in the region of screen light leak
Color shade value is high, and color gray value can be used to judge screen more than the number of the target pixel points of pre-set color gray scale permissible value
Whether light leak, when target pixel points number be more than predetermined number when, show that the pixel number of now light leak is more, it is sufficient to sentence
Determine screen light leak.Predetermined number can be adjusted according to actual needs.
In the present embodiment, the screen picture of black picture is shown on the screen for obtaining electronic equipment, screen picture is determined
In fringe region, obtain the color gray value of each pixel in fringe region, calculate color gray value and be more than pre-set color
The number of the target pixel points of gray scale permissible value, number and predetermined number according to target pixel points judge screen whether light leak.
This process can control to complete by computer, realize automatic detection, and detection efficiency is high, and judges screen light leak every time
Standard is objective consistent, need not rely upon artificial judgment, can improve the Stability and veracity of screen light leak test.
Optionally, before the screen picture for showing black picture on the screen for obtaining electronic equipment, can be by remote control
Device control electronics show black picture, electronic equipment was only shown black picture before screen picture is obtained, and save
Energy consumption；
Optionally, the screen display of electronic equipment can be adjusted by infrared launcher, infrared launcher
Belong to remote control, it may not be necessary to be connected with electronic equipment, simplify the preparation process before detection.Remote control can also be bluetooth
The wireless remote controllers such as remote control, WIFI remote controls.
Wherein in one embodiment, the detection method of screen light leak is further comprising the steps of：
If the number of target pixel points is less than or equal to predetermined number, the color gray value of each target pixel points is calculated respectively
With the difference of color gray scale permissible value, according to the first average value of each difference of each mathematic interpolation；
If the first average value is more than the first preset value, screen light leak is judged.
In the present embodiment, when the number of target pixel points is less than or equal to predetermined number, if each target pixel points
The average value of difference of color gray value and color gray scale permissible value be more than the first preset value, although showing target pixel points
Number not yet reaches the predetermined number for judging screen light leak, but the color gray value for wherein having partial pixel point has been much larger than face
Color shade permissible value, can also now judge screen light leak, so just cover a few pixels point much larger than color in detection
The situation of gray scale permissible value so that the detection of screen light leak is more accurate.First preset value can be adjusted according to actual needs
It is whole.
Wherein in one embodiment, the detection method of screen light leak is further comprising the steps of：
If the number of target pixel points is less than or equal to predetermined number, the of the color gray value of each target pixel points is calculated
Two average values；
If the second average value is more than the second preset value, screen light leak is judged.
In the present embodiment, when the number of target pixel points is less than or equal to predetermined number, if each target pixel points
Color gray value average value be more than the second preset value, although show target pixel points number not yet reach judgement screen leakage
The predetermined number of light, but the color gray value for wherein having partial pixel point has been much larger than color gray scale permissible value, each target
The average value of the color gray value of pixel alreadys exceed the second preset value, i.e. average value permissible value, can also now judge screen
Curtain light leak, so just covers because a few pixels point causes each target pixel points much larger than color gray scale permissible value in detection
The average value of color gray value already exceed the situation of average value permissible value so that the detection of screen light leak is more accurate.The
Two preset values can be adjusted according to actual needs.
Wherein in one embodiment, the detection method of screen light leak is further comprising the steps of：
If the first average value is less than or equal to the first preset value, the color gray scale of all pixels point of screen picture is obtained
Value, calculates the 3rd average value of the color gray value of all pixels point；
If the 3rd average value is less than or equal to the 3rd preset value, judge that screen display black picture is normal.
In the present embodiment, the first average value is less than or equal to the first preset value, shows the color ash of each target pixel points
The average value of angle value now needs to consider the color gray value that screen picture is overall, i.e. screen map not less than average value permissible value
As the 3rd average value of the color gray value of all pixels point, when the 3rd average value is less than or equal to three preset values, can sentence
Determine screen display black picture normal.In the case where judging that screen do not have light leak, by comparing the 3rd average value and the 3rd pre-
If value, it can be determined that whether screen is normal when black picture is shown, the aobvious of screen display black picture is more fully judged
Show effect.3rd preset value can be adjusted according to actual needs.
Optionally, when the 3rd average value is more than three preset values, judge that screen display black picture is abnormal.Though now
So it is not enough to judge screen light leak, but can be determined that screen display black picture is abnormal, represents there is still a need for electronic equipment
Screen display improved.
Wherein in one embodiment, bag the step of show the screen picture of black picture is obtained on the screen of electronic equipment
Include following steps：
Electronic equipment screen to showing black picture shoots, and the first shooting image is obtained, in the first shooting image
Region where middle positioning black picture, intercepts the image in the region as screen picture.
In the present embodiment, screen picture is obtained by the way of shooting, the attended operation with electronic equipment can be avoided,
Simplify detecting step；Because black picture may not just occupy whole first shooting image, the first shooting image when shooting
In except the offscreen image-region of black it is nonsensical to screen light leak test, it is therefore desirable to black in the first shooting image
Region where color picture is positioned.
Wherein in one embodiment, it is obtained on the screen of electronic equipment the step of show the screen picture of black picture
It is preceding further comprising the steps of：
Electronic equipment screen to showing white picture shoots, and obtains the second shooting image, and record white picture exists
Boundary coordinate in second shooting image；
The step of electronic equipment screen to showing black picture shoots comprises the following steps：
Same camera site when the electronic equipment screen to display white picture shoots, to display black picture
Electronic equipment screen shot；Wherein, electronic equipment is located in shade；
Comprised the following steps the step of the region where positioning black picture in the first shooting image：
Region according to where boundary coordinate positions black picture in the first shooting image.
In the present embodiment, due to electronic equipment screen self-luminous, external light source can produce one to be fixed the display of its picture
Ring, also can produce certain influence to obtaining screen picture, therefore electronic equipment can be placed in shade, then shading is filled
Electronic equipment in putting carries out screen picture acquisition, eliminates the influence of external light source, improves the accuracy of screen light leak test.By
In the background in shade be black, after the black picture that photographed screen show, it is impossible to determine black picture first shooting
Before particular location in image, therefore the screen picture that black picture can be shown on the screen for obtaining electronic equipment, first
Shot to showing the electronic equipment screen of white picture in same camera site, obtain the second shooting image, white picture
Black background with shade is contrasted, and can record boundary coordinate of the white picture in the second shooting image, so
Boundary coordinate of the black picture in the first shooting image is assured that, so as to realize black being drawn in the first shooting image
Region where face is positioned.
Optionally, black picture and the corresponding picture of white picture can be stored in electronic equipment, it is also possible to by movement
Storage device is read, and USB flash disk is such as inserted on an electronic device, read the picture in USB flash disk and shown on screen black picture or
White picture.
According to the detection method of above-mentioned screen light leak, the present invention also provides a kind of detecting system of screen light leak, below
The embodiment of the detecting system of screen light leak of the invention is described in detail.
It is shown in Figure 2, it is the structural representation of the detecting system of screen light leak of the invention.Screen in the embodiment
The detecting system of light leak is included with lower unit：
Image acquisition unit 210, the screen picture for showing black picture on the screen for obtaining electronic equipment；
Edge determining unit 220, for determining the fringe region in screen picture, fringe region is the side with screen picture
Screen picture region of the distance on boundary less than or equal to predeterminable range；
Gray scale acquiring unit 230, the color gray value for obtaining each pixel in fringe region；
Pixel computing unit 240, for calculating object pixel of the color gray value more than pre-set color gray scale permissible value
The number of point；
Judging unit 250, for when the number of target pixel points is more than predetermined number, judging screen light leak.
Wherein in one embodiment, as shown in figure 3, the detecting system of screen light leak also includes average calculation unit
260；
Average calculation unit 260 is used to, when the number of target pixel points is less than or equal to predetermined number, calculate respectively each
The color gray value of target pixel points and the difference of color gray scale permissible value, first according to each difference of each mathematic interpolation are average
Value；
Judging unit 250 is used to, when the first average value is more than the first preset value, judge screen light leak.
Wherein in one embodiment, average calculation unit 260 is used for the number in target pixel points less than or equal to pre-
If during number, calculating the second average value of the color gray value of each target pixel points；
Judging unit 250 is used to, when the second average value is more than the second preset value, judge screen light leak.
Wherein in one embodiment, as shown in figure 4, gray scale acquiring unit 230 is used to be less than or equal in the first average value
During the first preset value, the color gray value of all pixels point of screen picture is obtained；
Average calculation unit 260 is used for the 3rd average value of the color gray value for calculating all pixels point；
Judging unit 250 is used to, when the 3rd average value is less than or equal to three preset values, judge screen display black picture
Normally.
Wherein in one embodiment, image acquisition unit 210 is used to shoot the screen of electronic equipment, obtains the
One shooting image, the region where positioning black picture in the first shooting image, intercepts the image in the region as screen map
Picture.
Wherein in one embodiment, image acquisition unit 210 is additionally operable to the electronic equipment screen to showing white picture
Shot, obtained the second shooting image, boundary coordinate of the record white picture in the second shooting image；
Same shooting position of the image acquisition unit 210 when to showing that the electronic equipment screen of white picture shoots
Put, the electronic equipment screen to showing black picture shoots；Wherein, electronic equipment is located in shade；
Region of the image acquisition unit 210 according to where boundary coordinate positions black picture in the first shooting image.
The detecting system of screen light leak of the invention is corresponded with the detection method of screen light leak of the invention, above-mentioned
Technical characteristic and its advantage that the embodiment of the detection method of screen light leak is illustrated are applied to the detection system of screen light leak
In the embodiment of system.
According to the detection method of above-mentioned screen light leak, the present invention also provides a kind of detection means of screen light leak, below
The embodiment of the detection means of screen light leak of the invention is described in detail.
It is shown in Figure 5, it is the structural representation of the detection means of screen light leak of the invention.Screen in the embodiment
The detection means of light leak includes host computer 310, filming apparatus 320 and remote-controlled launcher 330；
Remote-controlled launcher 330 is used for remote controlled electronic device, and filming apparatus 320 are used to shoot the screen display of electronic equipment
Picture；Wherein, electronic equipment includes remote-receiver；
Host computer 310 drives remote-controlled launcher 330 to send remote signal to electronic equipment, and electronic equipment receives remote control
Black picture is shown after signal on screen；
Host computer 310 obtains the screen picture that black picture is shown on the screen of electronic equipment by filming apparatus 320；
Host computer 310 determine screen picture in fringe region, wherein fringe region be with the border of screen picture away from
From the screen picture region less than or equal to predeterminable range；
Host computer 310 obtains the color gray value of each pixel in fringe region, calculates color gray value more than default
The number of the target pixel points of color gray scale permissible value；If the number of target pixel points is more than predetermined number, screen leakage is judged
Light.
In the present embodiment, the testing equipment of screen light leak includes host computer 310, filming apparatus 320 and remote-transmitter dress
Put 330；Host computer 310 is connected with filming apparatus 320, and host computer 310 is also connected with remote-controlled launcher 330, and host computer 310 is
The computer of order can be directly sent, the operation principle of the testing equipment of the screen light leak is：Host computer 310 sends first and controls
To remote-controlled launcher 330, remote-controlled launcher 330 sends remote signal to electricity to signal processed after the first control signal is received
Sub- equipment；Electronic equipment is received and show on the screen of the electronic device after remote signal black picture, and host computer 310 sends the
To filming apparatus 320, filming apparatus 320 shoot on the screen of electronic equipment two control signals after the second control signal is received
Show the screen picture of black picture and send to host computer 310；Host computer 310 enters after receiving screen picture to screen picture
Row detection, judge electronic equipment screen whether light leak.In the testing equipment using screen light leak, by filming apparatus 320
The screen picture of electronic equipment is obtained, the operating process being connected with electronic equipment can be removed from, simplify detecting step, using upper
The screen picture of 310 pairs of acquisitions of machine is analyzed, and realizes automatic detection, judges whether the automatic detection process of light leak takes screen
It is short, the detection efficiency to electronic equipment screen light leak can be improved, and judge that the standard of screen light leak is objective consistent every time, nothing
Artificial judgment need to be depended on, the Stability and veracity of screen light leak test can be improved.
Wherein in one embodiment, as shown in fig. 6, the detection means of screen light leak also includes being connected with host computer 310
Warning device 340；
When host computer 310 judges screen light leak, warning device 340 is used to receive the alarm signal of the output of host computer 310
And carry out alarm.
In the present embodiment, when host computer 310 detects the screen light leak of electronic equipment, host computer 310 can send
To warning device 340, warning device 340 carries out alarm to alarm signal after receiving alarm signal, to point out testing staff
Electronic equipment to screen light leak is processed in time.
Wherein in one embodiment, as shown in fig. 7, the detection means of screen light leak also includes shade 350, shoot
Device 320, host computer 310 and remote-controlled launcher 330 are arranged in shade 340.
In the present embodiment, due to electronic equipment screen self-luminous, external light source can produce one to be fixed the display of its picture
Ring, filming apparatus 320 can also be obtained with screen picture and produce certain influence, therefore filming apparatus 320 can be placed on shading
In device 350, during electronic equipment also is located at shade in detection, screen light leak is carried out to electronic equipment in shade
Detection, eliminate external light source influence, improve screen light leak test accuracy.By host computer 310 and remote-controlled launcher
It is also disposed in shade, is easy to unified management.
Wherein in one embodiment, as shown in figure 8, the detection means of screen light leak also includes shadow shield 360, shadow shield
360 indicator lamps for being used to block electronic equipment.
In the present embodiment, typically there are various indicator lamps on electronic equipment, in the on-screen displays of electronic equipment,
Indicator lamp can light, and the lamplight brightness of indicator lamp is smaller, but still can influence screen light leak test, therefore can set shadow shield
The indicator lamp of electronic equipment is blocked, influence of the indicator lamp to screen light leak test is eliminated.Shadow shield only blocks indicator lamp, does not block
The screen of electronic equipment.
The detection method of above-mentioned screen light leak, system and device can apply to the electronic equipments such as television set, computer.
By taking television set as an example, television set producing line needs to be tested after television set has been assembled, including screen whether
The judgement detection of light leak.
The detection means of screen light leak as shown in figure 9, when television set to be tested enters the detection station of screen light leak, successively
The device of running is as follows：Computer (built-in AOI programs), infrared launcher, industrial camera, alarm lamp.
AOI (Automatic Optic Inspection, automatic optics inspection) is the necessary links of industrial manufacturing process,
The surface state of product is obtained using optical mode, exception or surface blemish are detected with image processing.
Shade realistic picture such as Figure 10：
Alarm lamp is positioned over shade outside, for display TV machine test result.
Infrared launcher can according to television set read USB flash disk picture selection of time be placed on shade outside or in
Face, when infrared launcher sends ultra-red order against television set, television set still ceaselessly flows in producing line, lifting operation
Efficiency；If the time that television set reads USB flash disk picture is very short, infrared launcher is positioned in shade；Conversely,
Then infrared launcher can be positioned over corresponding position in the outer producing line of shade.
When television set reaches screen light leak test station, screen just shows the photo read from USB flash disk, because television set exists
Remained static in test process, therefore other all devices can be positioned in the middle of shade.
Shade is next to a defective products discharger.
The connected mode of all parts：A, computer and industrial camera are connected by netting twine, for controlling and transmitting photo
Data, both two-way communications；B, computer and infrared launcher are connected by serial ports, are controlled using specific serial port protocol infrared
The corresponding infrared waveform of emitter transmitting, both two-way communications；C, computer and alarm lamp are connected by serial ports, are passed through
Specific serial port protocol controls alarm lamp, both two-way communications；D, infrared launcher are by launching infrared waveform remote control electricity
Depending on machine, both one-way communications；E, camera are by acquisition TV set image of taking pictures.
As shown in figure 11, the detection work of screen light leak test station is full automatic to method flow, is judged without workman.
Prepare before step 1, detection
Script is changed to remote control and sent by this method by manually operated and with the naked eye subjective judgement the mode of manual remote control device
Instruction, camera obtain TV images and carry out the mode of automatic detection.Due to TV set image self-luminous, external light source understands it
Picture produces influence (for example lighting), therefore whole test process is tested in shade.In the corresponding positions of shade
Put (the inside or outside) and place A, computer：For controlling infrared launcher, control industrial camera, operation AOI programs；B、
Infrared launcher：Media passages (media channel) are switched to for remote-controlled television set and read USB flash disk picture；C, industrial camera：
For gathering TV set image；D, alarm lamp：For notifying that workman is processed when defective products is detected.
In this detection project of screen light leak, when due to television boot-strap, power supply instruction lantern festival it is luminous (flash or
Chang Liang), although the brightness very little of this light, for screen light leak test, it is possible to the result for judging can be influenceed, therefore needed
Power supply indicator is blocked, specific method：During screen light leak test, gear is set in correspondence TV set power indicator lamp position
Plate, can cover luminous power supply indicator can't block television screen.
Step 2, display pure white picture positioning television machine screen
Detection can just be started after carrying out the preparation before detection, when television set reaches screen light leak test station, computer
(built-in AOI programs), by infrared launcher remote-controlled television set, is that television set is switched to Media passages and reads the figure of USB flash disk
Piece, the picture is a lily picture, and computer controls industrial camera is taken pictures to television set, after industrial camera is taken pictures
Pass photo the treatment of back computer AOI programs, AOI programs calculate TV by carrying out classical angle point algorithm to pure white picture
Four angular coordinates (identifying four coordinates of TV set image) on machine picture side, and record coordinate.
Step 3, display black picture, judge television screen edge whether light leak
Computer controls infrared launcher remote-controlled television set is switched to black picture, and now, television screen shows black
The picture of color, AOI programs determine the black picture of television set by the coordinate that picture is navigated to, and AOI programs judge television screen
Curtain edge whether light leak.
Light leak determination methods：Assuming that 4 coordinates of angle point of television screen are from left to right, from top to bottom respectively A (XA、
YA)、B(XB、YB)、C(XC、YC)、D(XD、YD), take XAB、XCD、YAC、YBDThis four line segments.
With XAB、XCD、YAC、YBDThis four line segments determine the fringe region of screen picture, side as the border of screen picture
Edge region is the screen picture less than or equal to certain distance (such as 100 distances of pixel) apart from border, calculates fringe region
In each pixel color gray value Wi, respectively by the color gray value W of each pixeliPermit with default color gray scale
Perhaps value W ' is compared, and gray value is smaller to show that color is more black, if Wi>W ', then record bad gray value WTPlus (Wi- W '), no
Good points N adds 1, WTSome pixel in fringe region is represented for 0, i with the initial value of N.
The N that will be finally calculated compares with default bad maximum permissible value N '：If N>N ', then judge screen side
Edge light leak；If N<=N ', then carry out next step judgement；
Calculate the color gray value of fringe region and the average avgW of the difference of default color gray scale permissible valueT=WT÷
N, the maximum permissible value W ' with default difference averageTCompare, if avgWT>W’T, then judge screen edge light leak, if
avgWT<=W 'T, then next step judgement is carried out；
Wherein, the comparing of the average of difference and the maximum permissible value of default difference average, it is also possible in the following manner：
The average of the color gray value of fringe region is directly calculated, the maximum permissible value with default color gray value average compares, in advance
If the maximum permissible value of color gray value average be the maximum of default color gray scale permissible value W ' and default difference average
Permissible value W 'TAnd value, the effect of two kinds of manner of comparison is equivalent.
Step 4, judge whether the display effect of the whole black picture of television set is up to standard
Whether the judgement up to standard for display effect of the whole television set under black picture, first calculates all pixels point
Color gray value average W=∑s Wj÷ m, wherein WjIt is the color gray value of each pixel, m is the quantity of all pixels point, j
The integer from 1 to m, and with default full frame color gray value permissible value W " be compared (and W values are smaller, represent display face
Color is more black)：
If W<=W ", then judge that television screen is normal in the display effect of black picture；
If W>W ", then judge that television screen is abnormal in the display effect of black picture.
Go out abnormal/detection in step 5, detection process normal
Occurs the abnormal television set of detection project in detection process, computer controls alarm lamp is alarmed and informs product
Line PLC (programmable logic controller (PLC)), producing line discharges television set in defective products discharger, and workman on a television set paste by face
The label of upper " defective products ", and television set is moved from defective products discharger；If video screen light leak test is normal,
Test mode is notified producing line PLC by computer, and producing line control television set circulation carries out other detection projects to next station
Detection.
On television set automatic production line, each of the Integration Assembly And Checkout of television set all in a producing line, in producing line
Operation must all be completed within the regular hour, otherwise be accomplished by workman by stop button, and whole piece producing line waits certain to operate
Could continue after.The overall layout of this producing line requirement and automated procedures are higher, manual operation are reduced as far as possible, it is to avoid can
The destabilizing factor that can be brought.
Television set from assembling station assembling finish after, it is necessary to whether light leak is detected to the screen of television set, system pair
Television set carry out automatic screen whether the detection of light leak, after screen light leak test passes through, television set enter next detection ring
Vanning station is saved and eventually enters into, television set vanning is put in storage after finishing.If the detection of screen light leak does not pass through, should in producing line
The alarm of station is sounded, and producing line discharges television set in discharger, and defective products label is sticked in face to workman on a television set
Television set is moved afterwards.
The method that traditional technical scheme uses manual hand manipulation, and workman's hand takes remote control distant against television set
Control allows television set to show black picture, and operation repeats to measure big, inefficiency；Workman observes by the naked eye to do subjective judgement, this
Kind of mode need workman by experience judge television screen whether light leak, there is larger subjectivity, it is possible to occur
Leakage confirms or confirms the situation of error, it is impossible to ensure stability of the whole batch tested product in this test event,
And workman can only check television screen whether light leak, and the display effect for television screen under black picture, then
More difficult subjective judgement.
In the present invention, using the automatic method for sending remote control code value, operating efficiency is high, and machine also will not be the same to people
Sense tired out can be produced, it is possible to achieve automation mechanized operation, reduce the harm that the duplication of labour brings to workman, lift detection efficiency, also
Stability of the product in this test event can be lifted with objective quick judgement.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of detection method of screen light leak, it is characterised in that comprise the following steps：
The screen picture of black picture is shown on the screen for obtaining electronic equipment；
Determine the fringe region in the screen picture, the fringe region is less than with the distance on the border of the screen picture
Equal to the screen picture region of predeterminable range；
The color gray value of each pixel in the fringe region is obtained, color gray value is calculated and is permitted more than pre-set color gray scale
The number of the target pixel points being worth perhaps；
If the number of the target pixel points is more than predetermined number, screen light leak is judged.
2. the detection method of screen light leak according to claim 1, it is characterised in that further comprising the steps of：
If the number of the target pixel points is less than or equal to the predetermined number, the face of each target pixel points is calculated respectively
The difference of color shade value and the color gray scale permissible value, according to the first average value of each each difference of mathematic interpolation；
If first average value is more than the first preset value, screen light leak is judged.
3. the detection method of screen light leak according to claim 1, it is characterised in that further comprising the steps of：
If the number of the target pixel points is less than or equal to the predetermined number, the color ash of each target pixel points is calculated
Second average value of angle value；
If second average value is more than the second preset value, screen light leak is judged.
4. the detection method of screen light leak according to claim 2, it is characterised in that further comprising the steps of：
If first average value is less than or equal to first preset value, the face of all pixels point of the screen picture is obtained
Color shade value, calculates the 3rd average value of the color gray value of all pixels point；
If the 3rd average value is less than or equal to the 3rd preset value, judge that screen display black picture is normal.
5. the detection method of screen light leak according to claim 1, it is characterised in that the screen of the acquisition electronic equipment
The step of screen picture of upper display black picture, comprises the following steps：
Electronic equipment screen to showing black picture shoots, and the first shooting image is obtained, in first shooting image
Region where the middle positioning black picture, intercepts the image in the region as the screen picture.
6. the detection method of screen light leak according to claim 5, it is characterised in that the screen of the acquisition electronic equipment
It is further comprising the steps of before the step of screen picture of upper display black picture：
Electronic equipment screen to showing white picture shoots, and obtains the second shooting image, records the white picture and exists
Boundary coordinate in second shooting image；
The step of electronic equipment screen of described pair of display black picture shoots comprises the following steps：
Same camera site when the electronic equipment screen to display white picture shoots, the electricity to showing black picture
Sub- device screen is shot；Wherein, the electronic equipment is located in shade；
It is described the black picture is positioned in first shooting image where region the step of comprise the following steps：
Region according to where the boundary coordinate positions the black picture in first shooting image.
7. a kind of detecting system of screen light leak, it is characterised in that including：
Image acquisition unit, the screen picture for showing black picture on the screen for obtaining electronic equipment；
Edge determining unit, for determining the fringe region in the screen picture, the fringe region is and the screen map
Screen picture region of the distance on the border of picture less than or equal to predeterminable range；
Gray scale acquiring unit, the color gray value for obtaining each pixel in the fringe region；
Pixel computing unit, it is individual more than the target pixel points of pre-set color gray scale permissible value for calculating color gray value
Number；
Judging unit, for when the number of the target pixel points is more than predetermined number, judging screen light leak.
8. a kind of detection means of screen light leak, it is characterised in that including host computer, filming apparatus and remote-controlled launcher；
The remote-controlled launcher is used for electronic equipment described in remote control, and the screen that the filming apparatus are used to shoot electronic equipment shows
Show picture；Wherein, the electronic equipment includes remote-receiver；
The host computer drives the remote-controlled launcher to send remote signal to the electronic equipment, and the electronic equipment is received
Black picture is shown on screen after to the remote signal；
The host computer obtains the screen picture that black picture is shown on the screen of the electronic equipment by filming apparatus；
The host computer determines the fringe region in the screen picture, wherein the fringe region is and the screen picture
Screen picture region of the distance on border less than or equal to predeterminable range；
The host computer obtains the color gray value of each pixel in the fringe region, calculates color gray value more than default
The number of the target pixel points of color gray scale permissible value；If the number of the target pixel points is more than predetermined number, screen is judged
Curtain light leak.
9. the detection means of screen light leak according to claim 8, it is characterised in that also including being connected with the host computer
Warning device；
When the host computer judges screen light leak, the warning device is used to receiving the alarm signal of host computer output simultaneously
Carry out alarm.
10. the detection means of screen light leak according to claim 8, it is characterised in that also including shade, the bat
Device, the host computer and the remote-controlled launcher is taken the photograph to be arranged in the shade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611124086.4A CN106780521B (en) | 2016-12-08 | 2016-12-08 | Screen light leakage detection method, system and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611124086.4A CN106780521B (en) | 2016-12-08 | 2016-12-08 | Screen light leakage detection method, system and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106780521A true CN106780521A (en) | 2017-05-31 |
| CN106780521B CN106780521B (en) | 2020-01-07 |
Family
ID=58877381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611124086.4A Active CN106780521B (en) | 2016-12-08 | 2016-12-08 | Screen light leakage detection method, system and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106780521B (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107506031A (en) * | 2017-08-16 | 2017-12-22 | 歌尔科技有限公司 | A kind of recognition methods of VR application programs and electronic equipment |
| CN107576663A (en) * | 2017-08-30 | 2018-01-12 | 无锡达蒙科技有限公司 | A kind of display screen defect automatic checkout system and method |
| CN107765463A (en) * | 2017-10-13 | 2018-03-06 | 上海友衷科技有限公司 | A kind of detection method of instrument board liquid crystal display |
| CN108281120A (en) * | 2018-01-27 | 2018-07-13 | 深圳市华星光电半导体显示技术有限公司 | The Mura method for repairing and mending of display panel |
| CN108474718A (en) * | 2018-03-29 | 2018-08-31 | 深圳市汇顶科技股份有限公司 | Screen detection device and method |
| CN108871735A (en) * | 2018-04-27 | 2018-11-23 | 上海与德科技有限公司 | Display screen shows the test fixture and its test method, host computer of quality |
| CN109801322A (en) * | 2017-11-16 | 2019-05-24 | 合肥欣奕华智能机器有限公司 | A kind of light leak test method and device |
| CN110084801A (en) * | 2019-04-28 | 2019-08-02 | 深圳回收宝科技有限公司 | A kind of detection method of terminal screen, device, portable terminal and storage medium |
| CN111221996A (en) * | 2019-11-25 | 2020-06-02 | 上海华兴数字科技有限公司 | Instrument screen visual detection method and system |
| CN111242116A (en) * | 2020-01-21 | 2020-06-05 | 上海悦易网络信息技术有限公司 | Screen positioning method and device |
| CN112190227A (en) * | 2020-10-14 | 2021-01-08 | 上海鹰瞳医疗科技有限公司 | Fundus camera and method for detecting use state thereof |
| CN112484967A (en) * | 2020-11-18 | 2021-03-12 | 深圳市汇顶科技股份有限公司 | Light intensity detection method, light intensity detection device, light intensity parameter determination method, light intensity parameter determination device, equipment and storage medium |
| CN112599088A (en) * | 2020-12-02 | 2021-04-02 | 深圳市汇顶科技股份有限公司 | Screen light leakage and ambient light detection method, chip, terminal and storage medium |
| CN112731696A (en) * | 2020-12-29 | 2021-04-30 | 江苏奥斯汀光电科技股份有限公司 | Intelligent equipment for analyzing black picture light leakage problem of narrow and long vehicle-mounted liquid crystal screen |
| CN113008524A (en) * | 2019-12-20 | 2021-06-22 | 合肥欣奕华智能机器有限公司 | Screen light leakage detection method and device |
| CN113747148A (en) * | 2021-08-20 | 2021-12-03 | 广州为实光电医疗科技有限公司 | Camera module light leak detection method, device and equipment |
| CN114354622A (en) * | 2021-12-30 | 2022-04-15 | 苏州凌云视界智能设备有限责任公司 | Defect detection method, device, equipment and medium for display screen |
| WO2022193102A1 (en) * | 2021-03-15 | 2022-09-22 | 京东方科技集团股份有限公司 | Method, apparatus and system for determining light leakage degree of display panel, and test fixture |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103971624A (en) * | 2013-01-28 | 2014-08-06 | 富泰华工业（深圳）有限公司 | Light-leaking detection system and method |
| CN105301810A (en) * | 2015-11-24 | 2016-02-03 | 上海斐讯数据通信技术有限公司 | Screen defect detecting method and screen defect detecting device |
| CN105607319A (en) * | 2016-03-02 | 2016-05-25 | 北京小米移动软件有限公司 | Method and device for improving light leak of screen automatically |
| CN106157286A (en) * | 2015-04-03 | 2016-11-23 | 研祥智能科技股份有限公司 | Image processing method and screen light leak test method |
-
2016
- 2016-12-08 CN CN201611124086.4A patent/CN106780521B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103971624A (en) * | 2013-01-28 | 2014-08-06 | 富泰华工业（深圳）有限公司 | Light-leaking detection system and method |
| CN106157286A (en) * | 2015-04-03 | 2016-11-23 | 研祥智能科技股份有限公司 | Image processing method and screen light leak test method |
| CN105301810A (en) * | 2015-11-24 | 2016-02-03 | 上海斐讯数据通信技术有限公司 | Screen defect detecting method and screen defect detecting device |
| CN105607319A (en) * | 2016-03-02 | 2016-05-25 | 北京小米移动软件有限公司 | Method and device for improving light leak of screen automatically |
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107506031A (en) * | 2017-08-16 | 2017-12-22 | 歌尔科技有限公司 | A kind of recognition methods of VR application programs and electronic equipment |
| CN107506031B (en) * | 2017-08-16 | 2020-03-31 | 歌尔科技有限公司 | VR application program identification method and electronic equipment |
| CN107576663A (en) * | 2017-08-30 | 2018-01-12 | 无锡达蒙科技有限公司 | A kind of display screen defect automatic checkout system and method |
| CN107765463A (en) * | 2017-10-13 | 2018-03-06 | 上海友衷科技有限公司 | A kind of detection method of instrument board liquid crystal display |
| CN109801322A (en) * | 2017-11-16 | 2019-05-24 | 合肥欣奕华智能机器有限公司 | A kind of light leak test method and device |
| CN109801322B (en) * | 2017-11-16 | 2021-11-09 | 合肥欣奕华智能机器有限公司 | Light leakage detection method and device |
| CN108281120A (en) * | 2018-01-27 | 2018-07-13 | 深圳市华星光电半导体显示技术有限公司 | The Mura method for repairing and mending of display panel |
| CN108281120B (en) * | 2018-01-27 | 2020-04-10 | 深圳市华星光电半导体显示技术有限公司 | Mura repairing method of display panel |
| CN108474718A (en) * | 2018-03-29 | 2018-08-31 | 深圳市汇顶科技股份有限公司 | Screen detection device and method |
| CN108871735A (en) * | 2018-04-27 | 2018-11-23 | 上海与德科技有限公司 | Display screen shows the test fixture and its test method, host computer of quality |
| CN110084801A (en) * | 2019-04-28 | 2019-08-02 | 深圳回收宝科技有限公司 | A kind of detection method of terminal screen, device, portable terminal and storage medium |
| CN111221996A (en) * | 2019-11-25 | 2020-06-02 | 上海华兴数字科技有限公司 | Instrument screen visual detection method and system |
| CN111221996B (en) * | 2019-11-25 | 2023-04-25 | 上海华兴数字科技有限公司 | Instrument screen vision detection method and system |
| CN113008524A (en) * | 2019-12-20 | 2021-06-22 | 合肥欣奕华智能机器有限公司 | Screen light leakage detection method and device |
| CN113008524B (en) * | 2019-12-20 | 2023-05-02 | 合肥欣奕华智能机器股份有限公司 | Screen light leakage detection method and device |
| CN111242116A (en) * | 2020-01-21 | 2020-06-05 | 上海悦易网络信息技术有限公司 | Screen positioning method and device |
| CN112190227A (en) * | 2020-10-14 | 2021-01-08 | 上海鹰瞳医疗科技有限公司 | Fundus camera and method for detecting use state thereof |
| CN112484967A (en) * | 2020-11-18 | 2021-03-12 | 深圳市汇顶科技股份有限公司 | Light intensity detection method, light intensity detection device, light intensity parameter determination method, light intensity parameter determination device, equipment and storage medium |
| CN112599088B (en) * | 2020-12-02 | 2022-04-12 | 深圳市汇顶科技股份有限公司 | Screen light leakage and ambient light detection method, chip, terminal and storage medium |
| CN112599088A (en) * | 2020-12-02 | 2021-04-02 | 深圳市汇顶科技股份有限公司 | Screen light leakage and ambient light detection method, chip, terminal and storage medium |
| CN112731696A (en) * | 2020-12-29 | 2021-04-30 | 江苏奥斯汀光电科技股份有限公司 | Intelligent equipment for analyzing black picture light leakage problem of narrow and long vehicle-mounted liquid crystal screen |
| WO2022193102A1 (en) * | 2021-03-15 | 2022-09-22 | 京东方科技集团股份有限公司 | Method, apparatus and system for determining light leakage degree of display panel, and test fixture |
| US11906827B2 (en) | 2021-03-15 | 2024-02-20 | Beijing Boe Display Technology Co., Ltd. | Method for determining light-leakage degree of display panel, test fixture and computer-readable storage medium |
| CN113747148A (en) * | 2021-08-20 | 2021-12-03 | 广州为实光电医疗科技有限公司 | Camera module light leak detection method, device and equipment |
| CN113747148B (en) * | 2021-08-20 | 2022-04-19 | 广州为实光电医疗科技有限公司 | Camera module light leak detection method, device and equipment |
| CN114354622A (en) * | 2021-12-30 | 2022-04-15 | 苏州凌云视界智能设备有限责任公司 | Defect detection method, device, equipment and medium for display screen |
| CN114354622B (en) * | 2021-12-30 | 2024-01-19 | 苏州凌云视界智能设备有限责任公司 | Display screen defect detection method, device, equipment and medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106780521B (en) | 2020-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106780521A (en) | The detection method of screen light leak, system and device | |
| CN106713903B (en) | The detection method and system of the screen intensity uniformity | |
| CN106341682A (en) | Aging function detection method, system and device | |
| CN112396999B (en) | Abnormal display block detection method, display screen fault detection method and equipment thereof | |
| CN104034516B (en) | Machine vision based LED detection device and detection method thereof | |
| US20070085906A1 (en) | Apparatus and method to evaluate an illuminated panel | |
| CN104777172B (en) | A kind of quick, intelligent detection device of optical lens substandard products and method | |
| CN105974616A (en) | Method and system for detecting defect of LCD screen | |
| CN111505849A (en) | L CD display screen finished product flaw detection imaging device and method | |
| TWI467500B (en) | The detection method of the led of using the digital image | |
| CN109445134A (en) | A kind of system and method for auto-measuring liquid crystal display die set optical data | |
| CN106803410A (en) | LED display module testing equipment | |
| CN206790647U (en) | The detection device of the screen intensity uniformity | |
| CN109471276A (en) | A kind of liquid crystal display colour cast defect inspection method and device | |
| CN106803412A (en) | LED display module testing equipment and method | |
| CN105744261B (en) | The test system and method for testing of set top box front panel | |
| CN104977304A (en) | Device and method for detecting defects of spatial light modulator with sub-pixel structure | |
| CN109801322A (en) | A kind of light leak test method and device | |
| CN108957799A (en) | A kind of detection method of LCD display module backlight uniformity of chromaticity | |
| US20200311427A1 (en) | Signal light display determination device, signal light display determination method, and non-transitory computer-readable recording medium | |
| CN107084989B (en) | Method and system for adding AOI device database | |
| CN113554965A (en) | Bad point processing method and device of display screen and control equipment of display screen | |
| CN106686374B (en) | Detection method, system and the device of screen color saturation degree | |
| CN106017870B (en) | Welding mask detection device and detection method thereof | |
| CN106162006A (en) | A kind of video camera automatically adjusts the method for mosaic screen chroma-luminance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |