CN108648689A - A kind of LED display based on camera repaiies seam method and system automatically - Google Patents
A kind of LED display based on camera repaiies seam method and system automatically Download PDFInfo
- Publication number
- CN108648689A CN108648689A CN201810590313.5A CN201810590313A CN108648689A CN 108648689 A CN108648689 A CN 108648689A CN 201810590313 A CN201810590313 A CN 201810590313A CN 108648689 A CN108648689 A CN 108648689A
- Authority
- CN
- China
- Prior art keywords
- led display
- lamp bead
- led
- camera
- seam
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention discloses a kind of LED display based on camera and repaiies seam method and system automatically.The LED display based on camera repaiies seam method automatically comprising following steps：Obtain the photo of LED display；Photo based on the LED display calculates the spacing value r between the LED lamp bead for obtaining and being located at left and right sides of two adjacent LEDs display screen module seam crossing；Based on the correction function k=f (r) between spacing value correction coefficient, and according to spacing value r calculating positioned at the brightness correction coefficients k of the LED lamp bead of the seam crossing；According to the brightness correction coefficients k to being corrected positioned at the brightness of the seam crossing LED lamp bead.The advantageous effect of technical scheme of the present invention is：LED display of the kind of offer based on camera repair automatically seam method can according only at the spacing value abutment joint between the LED lamp bead at left and right sides of two adjacent LEDs display screen module seam crossing bright line or concealed wire be corrected.The present invention also provides a kind of LED displays based on camera to repair seam system automatically.
Description
Technical field
The present invention relates to a kind of LED displays based on camera to repair seam method and system automatically.
Background technology
Currently, during the actual assembled of LED display, the installation between two adjacent LEDs display screen module is elastic
Degree can have difference, cause the interval between two adjacent LEDs display screen module between the edge LED lamp bead of seam crossing that can send out
Changing, and then the seam crossing in two adjacent LEDs display screen module is caused to will appear bright line or concealed wire.
But the bearing calibration of LED display brightness is focused primarily upon to LED lamp bead brightness and coloration in LED display
It is corrected.For example, such as application No. is the Chinese patents of CN201010257906.3：A kind of LED display brightness point by point coloration
Bearing calibration, and include the following steps：
(1) connection camera, Correction Processor and the LED display control system；
(2) Correction Processor and camera are placed in front of LED display and are put apart from camera face LED display for 30-50 meters
It sets；
(3) focal length of the adjustment camera is extremely capable of the position of blur-free imaging；
(4) parameter of data acquisition module in Correction Processor, including LED display module lamp point spacing, lamp point are set
Arrangement mode and partition scheme；
(5) start and automatically correct, carry out the brightness of LED display and chroma data acquires and brightness point by point and chromaticity correction
The operation and generation of coefficient；
(6) brightness point by point and chromaticity correction coefficient are sent to LED display control system, control system is according to the school of reception
Positive coefficient control LED display is shown.
Obviously, above-mentioned brightness and coloration antidote are only capable of to LED lamp bead known to lamp point spacing in LED display module
Brightness and coloration be corrected, can not solve to will appear bright line or dark in the seam crossing of two adjacent LEDs display screen module
The problem of line.
Invention content
It is the problems in existing it is an object of the invention to solve, a kind of LED display based on camera is provided and repaiies seam automatically
Method and system.
To reach above-mentioned purpose, the present invention adopts the following technical scheme that, a kind of LED display based on camera repaiies seam automatically
Method comprising following steps：Obtain the photo of LED display；Photo based on the LED display, which calculates to obtain, is located at phase
The spacing value r between LED lamp bead at left and right sides of adjacent two LED display module seam crossings；Based on spacing value-correction coefficient it
Between correction function k=f (r), and according to the spacing value r calculate positioned at the seam crossing LED lamp bead gamma correction system
Number k；According to the brightness correction coefficients k to being corrected positioned at the brightness of the seam crossing LED lamp bead.
Preferably, the correction function k=f (r) is：
K=a × r+b × r2+c×r3+ d,
Wherein, k is brightness correction coefficients, and r is spacing value, and a, b, c, d are constant.
Preferably, it is counted based on the correction function k=f (r) between spacing value-correction coefficient, and according to the spacing value r
In the step of calculating positioned at the brightness correction coefficients k of the LED lamp bead of the seam crossing, the LED lamp bead positioned at the seam crossing is calculated
The luminance reference of brightness correction coefficients k be：The average brightness of LED lamp bead in LED display module.
A kind of LED display based on camera repaiies seam system automatically, including：Camera, data processing unit, LED display
Control system and LED display；The photo of the camera shooting in LED display, the data processing unit receive and locate
The photo of the camera shooting is managed, and calculates to obtain based on the photo of the LED display and is located at two adjacent LEDs display screen mould
Spacing value r between LED lamp bead at left and right sides of at sets of seams；The data processing unit is further based on spacing value-school
Correction function k=f (r) between positive coefficient, and the bright of the LED lamp bead positioned at the seam crossing is calculated according to the spacing value r
Spend correction coefficient k；The brightness correction coefficients that the data processing unit is calculated are sent out by the LED display control system
It is sent to reception card, and controls the LED display completion and repaiies seam automatically.
Preferably, the correction function k=f (r) is：
K=a × r+b × r2+c×r3+ d,
Wherein, k is brightness correction coefficients, and r is spacing value, and a, b, c, d are constant.
Preferably, the luminance reference of brightness correction coefficients k for calculating the LED lamp bead positioned at the seam crossing is：LED is shown
Shield LED lamp bead brightness in module.
Compared to the prior art, technical solution provided by the invention has the advantages that：
1, it is repaiied automatically in seam method in the LED display based on camera, based on the school between spacing value-correction coefficient
Positive function k=f (r), and according to spacing value r calculating positioned at the brightness correction coefficients k of the LED lamp bead of the seam crossing；And
According to the brightness correction coefficients k to being corrected positioned at the brightness of the seam crossing LED lamp bead so that after mounting, can be with
According only to the bright line at the spacing value abutment joint between the LED lamp bead at left and right sides of two adjacent LEDs display screen module seam crossing
Or concealed wire is corrected, and is in dispaly state due to not needing LED display in correction course, bearing calibration is simple, and has
Preferable calibration result；
2, the luminance reference that calculating is located at the brightness correction coefficients k of the LED lamp bead of the seam crossing is：LED display mould
The average brightness of LED lamp bead in group, using the average brightness of LED lamp bead in LED display module as gamma correction benchmark, Neng Gouyou
Effect ground ensures the consistency of lamp point in LED display, improves screen body uniformity.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and constitutes the part of the present invention, this hair
Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the structure diagram that the LED display provided in an embodiment of the present invention based on camera repaiies seam system automatically；
Fig. 2 is that the LED display provided in an embodiment of the present invention based on camera repaiies LED display module in seam method automatically
Splice schematic diagram.
Specific implementation mode
In order to keep technical problems, technical solutions and advantages to be solved clearer, clear, tie below
Drawings and examples are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
In claims of the present invention, specification and above-mentioned attached drawing, such as using term " comprising ", " having " and they
Deformation, it is intended that " including but not limited to ".
As shown in Figure 1, the LED display provided in an embodiment of the present invention based on camera repaiies seam system automatically includes：Camera
10, data processing unit 20, LED display control system 30 and LED display 40.
It should be noted that form LED lamp bead brightness in the LED display module of the LED display 40 into
Row correction, that is, before assembling, the LED lamp bead brightness in LED display module described in any two is identical.The LED display
40 are that the installation tightness of LED display module is different the reason of occurring bright line or concealed wire after assembling, lead to adjacent two
Seam crossing is of different size between a LED display module.
The photo of LED display 40 of the shooting of the camera 10 in dispaly state；
The data processing unit 20 receives and processes the photo of the shooting of the camera 10, and is based on the LED display
40 photo calculates the spacing value between the LED lamp bead for obtaining and being located at left and right sides of two adjacent LEDs display screen module seam crossing
r；
The data processing unit 20 is further based on the correction function k=f (r) between spacing value-correction coefficient, and
The brightness correction coefficients k of the LED lamp bead positioned at the seam crossing is calculated according to the spacing value r；
The brightness correction coefficients that the data processing unit 20 is calculated are sent out by the LED display control system 30
It is sent to reception card, and controls the LED display 40 and completes to repair seam automatically.
It should be noted that the data processing unit 20 can be computer or tablet computer, the LED display control
System 30 processed can be the computer or controller for controlling LED display 40.Selectively, the data processing unit 20
It can be connect with the LED display control system 30 by network.
Moreover,
Specifically, the correction function k=f (r) is：
K=a × r+b × r2+c×r3+ d,
Wherein, k is brightness correction coefficients, and r is spacing value, and a, b, c, d are constant.
Moreover, the luminance reference for calculating the brightness correction coefficients k of the LED lamp bead positioned at the seam crossing is：LED display
LED lamp bead brightness in module.
As shown in Fig. 2, setting the interval between the LED lamp bead at left and right sides of two adjacent LEDs display screen module seam crossing
Value is r；The average brightness value of LED lamp bead in LED display module is set as L0；
Obviously, it should be understood that with the variation of spacing value between two adjacent LEDs lamp bead, two LED lamp beads are shown
The average brightness value come can be with variation：Spacing value is bigger, then average brightness value is smaller；Spacing value is smaller, then average brightness value
It is bigger.Moreover, the variation of brightness value and spacing value is not linear relationship, it is based on above-mentioned principle, using polynomial fitting method
Obtain the fitting function between spacing value and brightness value.
The target brightness value between the LED lamp bead at left and right sides of two adjacent LEDs display screen module seam crossing is set as L,
Then have：
L=k × L0, wherein k is correction coefficient；
In view of k is then can to obtain spacing value and correction coefficient according to polynomial fitting method since spacing value r is determined
Fitting function k=f (r) between k is：
K=a × r+b × r2+c×r3+ d,
Wherein, k is brightness correction coefficients, and r is spacing value, and a, b, c, d are constant.
A kind of LED display 40 based on camera 10 repaiies seam method automatically, includes the following steps：
1, the photo of LED display 40 is obtained；
2, the photo based on the LED display 40, which calculates to obtain, is located at a two adjacent LEDs display screen module seam crossing left side
Spacing value r between the LED lamp bead of right both sides；
3, based on the correction function k=f (r) between spacing value-correction coefficient, and it is located at according to spacing value r calculating
The brightness correction coefficients k of the LED lamp bead of the seam crossing；
4, according to the brightness correction coefficients k to being corrected positioned at the brightness of the seam crossing LED lamp bead.
It should be noted that the correction function k=f (r) is：
K=a × r+b × r2+c×r3+ d,
Wherein, k is brightness correction coefficients, and r is spacing value, and a, b, c, d are constant.
Moreover, in step 3, calculating the luminance reference of the brightness correction coefficients k of the LED lamp bead positioned at the seam crossing
For：The average brightness of LED lamp bead in LED display module.
The preferred embodiment of the present invention has shown and described in above description, as previously described, it should be understood that the present invention is not office
Be limited to form disclosed herein, be not to be taken as excluding other embodiments, and can be used for various other combinations, modification and
Environment, and can be changed by the above teachings or related fields of technology or knowledge in the scope of the invention is set forth herein
It is dynamic.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be appended by the present invention
In scope of the claims.
Claims (8)
1. a kind of LED display based on camera repaiies seam method automatically, it is characterised in that：It includes the following steps：
Obtain the photo of LED display；
Photo based on the LED display, which calculates to obtain, to be located at left and right sides of two adjacent LEDs display screen module seam crossing
Spacing value r between LED lamp bead；
Based on the correction function k=f (r) between spacing value-correction coefficient, and is calculated according to the spacing value r and be located at described connect
The brightness correction coefficients k of LED lamp bead at seam；
According to the brightness correction coefficients k to being corrected positioned at the brightness of the seam crossing LED lamp bead.
2. a kind of LED display based on camera as described in claim 1 repaiies seam method automatically, it is characterised in that：The school
Positive function k=f (r) is：
K=a × r+b × r2+c×r3+ d,
Wherein, k is brightness correction coefficients, and r is spacing value, and a, b, c, d are constant.
3. a kind of LED display based on camera as described in claim 1 repaiies seam method automatically, it is characterised in that：Based on
Correction function k=f (r) between spacing value-correction coefficient, and the LED positioned at the seam crossing is calculated according to the spacing value r
In the step of brightness correction coefficients k of lamp bead,
The luminance reference of brightness correction coefficients k for calculating the LED lamp bead positioned at the seam crossing is：LED in LED display module
The average brightness of lamp bead.
4. a kind of LED display based on camera as described in claim 1 repaiies seam method automatically, it is characterised in that：Arbitrary two
The average brightness of LED lamp bead in a LED display module is identical.
5. a kind of LED display based on camera repaiies seam system automatically, it is characterised in that：Including：Camera, data processing unit,
LED display control system and LED display；
The photo of the camera shooting in LED display,
The data processing unit receives and processes the photo of the camera shooting, and the photo meter based on the LED display
Calculate the spacing value r between the LED lamp bead for obtaining and being located at left and right sides of two adjacent LEDs display screen module seam crossing；
The data processing unit is further based on the correction function k=f (r) between spacing value-correction coefficient, and according to institute
State the brightness correction coefficients k for the LED lamp bead that spacing value r is calculated positioned at the seam crossing；
The brightness correction coefficients that the data processing unit is calculated are sent to reception by the LED display control system
Card, and control the LED display completion and repair seam automatically.
6. a kind of LED display based on camera as described in claim 1 repaiies seam system automatically, it is characterised in that：The school
Positive function k=f (r) is：
K=a × r+b × r2+c×r3+ d,
Wherein, k is brightness correction coefficients, and r is spacing value, and a, b, c, d are constant.
7. a kind of LED display based on camera as described in claim 1 repaiies seam system automatically, it is characterised in that：Calculate position
It is in the luminance reference of the brightness correction coefficients k of the LED lamp bead of the seam crossing：LED lamp bead brightness in LED display module.
8. a kind of LED display based on camera as described in claim 1 repaiies seam system automatically, it is characterised in that：Arbitrary two
The average brightness of LED lamp bead in a LED display module is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810590313.5A CN108648689A (en) | 2018-06-09 | 2018-06-09 | A kind of LED display based on camera repaiies seam method and system automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810590313.5A CN108648689A (en) | 2018-06-09 | 2018-06-09 | A kind of LED display based on camera repaiies seam method and system automatically |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108648689A true CN108648689A (en) | 2018-10-12 |
Family
ID=63752189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810590313.5A Withdrawn CN108648689A (en) | 2018-06-09 | 2018-06-09 | A kind of LED display based on camera repaiies seam method and system automatically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108648689A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111402768A (en) * | 2020-04-13 | 2020-07-10 | 深圳市洲明科技股份有限公司 | Automatic seam trimming device, L ED display screen and automatic seam trimming method thereof |
| CN111862884A (en) * | 2020-07-23 | 2020-10-30 | 厦门强力巨彩光电科技有限公司 | Unmanned automatic correction system and method for LED display screen |
| CN112289209A (en) * | 2020-10-20 | 2021-01-29 | 长春希达电子技术有限公司 | LED display box body and display screen splicing pixel interval brightness correction method |
| CN113470567A (en) * | 2021-06-25 | 2021-10-01 | 西安诺瓦星云科技股份有限公司 | Display screen correction method, device and system |
| WO2021207978A1 (en) * | 2020-04-15 | 2021-10-21 | 西安诺瓦星云科技股份有限公司 | Correction method and apparatus for spliced bright and dark lines |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101573742A (en) * | 2007-03-26 | 2009-11-04 | 三菱电机株式会社 | Video display device and image display method |
| CN101692326A (en) * | 2009-09-01 | 2010-04-07 | 惠州市德赛智能科技有限公司 | System and method for on-site point-by-point calibration of brightness and chrominance of the whole screen of LED display screen |
| CN102231251A (en) * | 2011-06-21 | 2011-11-02 | 华南理工大学 | Camera photo-based method for point-by-point inhomogeneous analysis and correction of LED (Light Emitting Diode) |
| CN103778887A (en) * | 2013-03-21 | 2014-05-07 | 西安电子科技大学 | Method and device for correcting brightness of LED display device |
| CN104915922A (en) * | 2015-06-25 | 2015-09-16 | 西安诺瓦电子科技有限公司 | Splicing bright-dark line correction method |
| CN105096816A (en) * | 2014-05-06 | 2015-11-25 | 西安诺瓦电子科技有限公司 | Method for correcting brightness and chrominance of LED display screen and mobile communication terminal |
| CN108074517A (en) * | 2016-11-17 | 2018-05-25 | 西安诺瓦电子科技有限公司 | Pointwise correction method |
-
2018
- 2018-06-09 CN CN201810590313.5A patent/CN108648689A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101573742A (en) * | 2007-03-26 | 2009-11-04 | 三菱电机株式会社 | Video display device and image display method |
| CN101692326A (en) * | 2009-09-01 | 2010-04-07 | 惠州市德赛智能科技有限公司 | System and method for on-site point-by-point calibration of brightness and chrominance of the whole screen of LED display screen |
| CN102231251A (en) * | 2011-06-21 | 2011-11-02 | 华南理工大学 | Camera photo-based method for point-by-point inhomogeneous analysis and correction of LED (Light Emitting Diode) |
| CN103778887A (en) * | 2013-03-21 | 2014-05-07 | 西安电子科技大学 | Method and device for correcting brightness of LED display device |
| CN105096816A (en) * | 2014-05-06 | 2015-11-25 | 西安诺瓦电子科技有限公司 | Method for correcting brightness and chrominance of LED display screen and mobile communication terminal |
| CN104915922A (en) * | 2015-06-25 | 2015-09-16 | 西安诺瓦电子科技有限公司 | Splicing bright-dark line correction method |
| CN108074517A (en) * | 2016-11-17 | 2018-05-25 | 西安诺瓦电子科技有限公司 | Pointwise correction method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111402768A (en) * | 2020-04-13 | 2020-07-10 | 深圳市洲明科技股份有限公司 | Automatic seam trimming device, L ED display screen and automatic seam trimming method thereof |
| WO2021208389A1 (en) * | 2020-04-13 | 2021-10-21 | 深圳市洲明科技股份有限公司 | Automatic seam joining device, led display screen, and automatic seam joining method |
| CN111402768B (en) * | 2020-04-13 | 2022-04-22 | 深圳市洲明科技股份有限公司 | Automatic seam repairing device, LED display screen and automatic seam repairing method thereof |
| WO2021207978A1 (en) * | 2020-04-15 | 2021-10-21 | 西安诺瓦星云科技股份有限公司 | Correction method and apparatus for spliced bright and dark lines |
| CN111862884A (en) * | 2020-07-23 | 2020-10-30 | 厦门强力巨彩光电科技有限公司 | Unmanned automatic correction system and method for LED display screen |
| CN112289209A (en) * | 2020-10-20 | 2021-01-29 | 长春希达电子技术有限公司 | LED display box body and display screen splicing pixel interval brightness correction method |
| CN112289209B (en) * | 2020-10-20 | 2022-08-23 | 长春希达电子技术有限公司 | LED display box body and display screen abutted pixel interval brightness correction method |
| CN113470567A (en) * | 2021-06-25 | 2021-10-01 | 西安诺瓦星云科技股份有限公司 | Display screen correction method, device and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108648689A (en) | A kind of LED display based on camera repaiies seam method and system automatically | |
| CN104409068B (en) | A kind of luminance compensation method and curved-surface display device | |
| CN104966493B (en) | Splice bright concealed wire compensation method | |
| CN103578430B (en) | A kind of method of brightness of automatic adjustable liquid crystal display screen and electronic equipment | |
| CN106157904B (en) | Liquid crystal display and its display auto-correction method and device | |
| CN104915922A (en) | Splicing bright-dark line correction method | |
| CN105321467B (en) | LED display control system receives card and splices bright concealed wire modification method | |
| CN103426403A (en) | Image acquisition method for calibration, picture display method and calibration method for LED display screen | |
| CN106782306A (en) | The brightness adjusting method and brightness control system of a kind of OLED display panel | |
| CN105185314A (en) | Uniformity compensation method for LED display screen | |
| CN103617776A (en) | Method and system for adjusting display screen luminance uniformity | |
| CN101692326A (en) | System and method for on-site point-by-point calibration of brightness and chrominance of the whole screen of LED display screen | |
| CN105405392A (en) | Method for compensating luminance- and chroma-differences between subareas during LED display screen subarea correction | |
| CN104575373A (en) | Luminance and chrominance correction production line for LED (light-emitting diode) display modules | |
| CN106531049A (en) | Brightness adjusting method and system of display panel | |
| CN104423913B (en) | Light measurement method of parameters, device and screen adjustment method, electronic equipment | |
| CN105407342A (en) | Image Calibration System And Calibration Method Of A Stereo Camera | |
| CN104618691A (en) | Panoramic brightness balance regulating system and regulating method | |
| CN104867479A (en) | Device and method for adjusting screen brightness of splicing display device | |
| CN103544919A (en) | LED rental screen system and brightness correction method thereof | |
| CN106454290B (en) | A kind of dual camera image processing system and method | |
| CN104780320A (en) | Ambient light detection method and electronic equipment | |
| CN109727292A (en) | Based on multi-cam-projector interactive projection system and automation scaling method | |
| CN104735467A (en) | Video picture-in-picture advertisement generating method and device | |
| CN102982785A (en) | Color tuning system used for television wall |
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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181012 |
|
| WW01 | Invention patent application withdrawn after publication |