CN109257583B - Seamless splicing method and system for images of projection equipment - Google Patents
Seamless splicing method and system for images of projection equipment Download PDFInfo
- Publication number
- CN109257583B CN109257583B CN201811413081.2A CN201811413081A CN109257583B CN 109257583 B CN109257583 B CN 109257583B CN 201811413081 A CN201811413081 A CN 201811413081A CN 109257583 B CN109257583 B CN 109257583B
- Authority
- CN
- China
- Prior art keywords
- projection
- images
- image
- adjacent
- distance
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000010191 image analysis Methods 0.000 claims description 7
- 238000004458 analytical method Methods 0.000 abstract description 4
- 230000004927 fusion Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3185—Geometric adjustment, e.g. keystone or convergence
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
- G06T3/4038—Image mosaicing, e.g. composing plane images from plane sub-images
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Geometry (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Projection Apparatus (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention relates to the technical field of projection, aims to solve the problem of large gaps when projected images of a plurality of existing projection devices are spliced, and provides a seamless splicing method for images of the projection devices, which comprises the following steps: collecting projection images of each projection device in real time; analyzing the distance between the projection image corresponding to each projection device and the adjacent edge of the adjacent projection image in real time according to the projection image; and geometrically correcting the projection picture of each projection device until the distance between the projection image corresponding to each projection device and the adjacent side of the adjacent projection image is zero. The projection images of the projection equipment are automatically geometrically corrected according to the analysis result, seamless splicing of the projection images of the projection equipment is achieved, the geometric correction efficiency and accuracy of the projection equipment are improved, the integrity of the projection images displayed by the projection images is better, the watching comfort of a user is improved, and the method is suitable for split-screen projection scenes.
Description
Technical Field
The invention relates to the technical field of projection, in particular to a method and a system for splicing images of projection equipment.
Background
The existing projection equipment is widely applied to families and projects, the current mainstream products are LCD splicing and LED splicing screens, in order to realize projection display of a larger screen, the video fusion device is mainly used for splitting an image into a plurality of images through a video fusion device, the split-screen projection is carried out through the plurality of projection equipment, and the split-screen projection is displayed on a projection panel.
Disclosure of Invention
The invention aims to solve the problem that gaps are large when projected images of a plurality of existing projection devices are spliced, and provides a method and a system for seamlessly splicing images of the projection devices.
The technical scheme adopted by the invention for solving the technical problems is as follows: the seamless splicing method for the images of the projection equipment comprises the following steps:
s1, collecting projection images of each projection device in real time;
s2, analyzing the distance between the projection image corresponding to each projection device and the adjacent side of the adjacent projection image in real time according to the projection image;
and S3, carrying out geometric correction on the projection picture of each projection device until the distance between the projection image corresponding to each projection device and the adjacent side of the adjacent projection image is zero.
Further, to realize a complete display of a larger image, the acquiring projection images of each projection device in real time further includes:
and splitting the complete image and then sending the split image to each projection device, wherein the number of the projection images of the split complete image is equal to that of the projection devices.
Further, in order to avoid the influence caused by the inclination of the projection image, before analyzing the distance between the projection image corresponding to each projection device and the adjacent edge of the adjacent projection image in real time according to the projection image, the method further includes:
and judging whether the adjacent sides of the projection images are parallel, if so, entering the step S2, otherwise, rotating the projection picture of the projection equipment until the adjacent sides of the projection images are parallel to each other, and entering the step S2.
Further, in order to improve the efficiency of geometric correction, the geometrically correcting the projection picture of the projection device includes:
and fixing one projection picture, and moving the other projection pictures until the distance between the projection image corresponding to each projection device and the adjacent side of the adjacent projection image is zero.
Further, in order to effectively perform geometric correction of the projection apparatus, the geometrically correcting the projection picture of the projection apparatus further includes:
and moving a certain projection picture along a certain direction, and if the distance between the image of the projection picture and the adjacent side of the adjacent projection image is increased, moving the projection picture along the opposite direction of the direction.
In order to solve the problem of large gap when the projection images of a plurality of existing projection devices are spliced, the invention also provides a seamless splicing system of the projection devices, which comprises the following components:
the image acquisition module is used for acquiring projection images of all the projection devices in real time and sending the projection images to the image analysis module;
the image analysis module is used for receiving the projection images and analyzing the distances between the projection images corresponding to the projection equipment and the adjacent edges of the adjacent projection images in real time according to the projection images;
and the projection equipment geometric correction module is used for geometrically correcting the projection picture of the projection equipment according to the distance between the projection image corresponding to each projection equipment and the adjacent side of the adjacent projection image until the distance between the projection image corresponding to each projection equipment and the adjacent side of the adjacent projection image is zero.
The invention has the beneficial effects that: according to the method and the system for splicing the images of the projection equipment, the plurality of projection images are collected in real time, the distance between each projection image and the adjacent side of the adjacent projection image is analyzed in real time, the projection images of the projection equipment are automatically geometrically corrected according to the analysis result, the seamless splicing of the projection images of the plurality of projection equipment is achieved, the efficiency and the accuracy of the geometric correction of the projection equipment are improved, the integrity of the projection images displayed by the plurality of projection images is better, and the watching comfort level of a user is improved.
Drawings
Fig. 1 is a schematic flowchart of a method for seamlessly splicing images of a projection device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of projected images of four projection devices according to an embodiment of the present invention;
description of reference numerals:
1-projection image corresponding to the projection device 1; 2-projection image corresponding to the projection device 2; 3-projection image corresponding to the projection device 3; 4-projection image corresponding to the projection device 4.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The seamless splicing method for the images of the projection equipment is characterized by comprising the following steps of: s1, collecting projection images of each projection device in real time; s2, analyzing the distance between the projection image corresponding to each projection device and the adjacent side of the adjacent projection image in real time according to the projection image; and S3, carrying out geometric correction on the projection picture of each projection device until the distance between the projection image corresponding to each projection device and the adjacent side of the adjacent projection image is zero.
The method comprises the steps that a video signal source sends projection images to a plurality of projection devices respectively, the projection images are projected to a display wall or a display panel by the plurality of projection devices to form a plurality of projection image combined display, the plurality of projection images combined display are collected in real time, the distance between the projection image corresponding to each projection device and the adjacent side of the adjacent projection image is analyzed in real time, geometric correction is conducted on each projection device according to the analysis result, namely, a projection picture is moved according to the analysis result until the distance between each projection image and the adjacent side of the adjacent projection image is zero, and automatic geometric correction of the projection devices is completed.
Examples
The method for seamlessly splicing images of the projection equipment, disclosed by the embodiment of the invention, as shown in figure 1, comprises the following steps of:
s1, collecting projection images of each projection device in real time;
the projection images of the projection devices can be collected through an image collection module such as a camera, the number of the projection devices is selected according to projection requirements, and the embodiment takes four projection devices as an example, which includes projection device 1, projection device 2, projection device 3 and projection device 4, as shown in fig. 2, and collects four projection images of the four projection devices in real time.
S2, analyzing the distance between the projection image corresponding to each projection device and the adjacent side of the adjacent projection image in real time according to the projection image;
it can be understood that, the real-time collected projection images are analyzed in real time by the image analysis module, mainly images at the splicing interface of the four projection images are analyzed, and the distance between the projection image corresponding to each projection device and the adjacent edge of the adjacent projection image is analyzed according to algorithm processing, as shown in fig. 2, the distance between the projection image corresponding to each projection device and the adjacent edge of the adjacent projection image in this embodiment includes a distance a between the projection device 1 and the adjacent edge of the projection device 2, a distance B between the projection device 2 and the adjacent edge of the projection device 3, a distance C between the projection device 3 and the adjacent edge of the projection device 4, and a distance D between the projection device 4 and the adjacent edge of the projection device 1.
S3, performing geometric correction on the projection picture of each projection device until the distance between the projection image corresponding to each projection device and the adjacent side of the adjacent projection image is zero;
it can be understood that, according to the above-mentioned geometric correction performed on the distances between the projection image corresponding to each projection device and the adjacent sides of the adjacent projection images, first, the values of the distances A, B, C and D are determined, where a is equal to X1, and if X1 is greater than 0, the projection pictures of the projection device 1 or the projection device 2 are moved according to the result of the real-time analysis until the distance value X1 between the adjacent sides of the projection device 1 and the projection device 2 is equal to 0, and the above-mentioned geometric correction is performed until the value of the distance A, B, C, D between the projection pictures of all the projection devices and the adjacent sides of the adjacent projection images is zero.
Optionally, before acquiring the projection images of the respective projection apparatuses in real time, the method further includes:
and splitting the complete image and then sending the split image to each projection device, wherein the number of the projection images of the split complete image is equal to that of the projection devices.
It can be understood that the signal source sends the projection image to the video fusion device, and the video fusion device divides the completed image into 4 screens, 9 screens, and the like according to the projection requirement and then sends the divided image to each projection device, and the data of the corresponding projection devices correspond to 4 or 9.
Optionally, before analyzing, in real time, the distance between the projection image corresponding to each projection device and the adjacent edge of the adjacent projection image according to the projection image, the method further includes:
and judging whether the adjacent sides of the projection images are parallel, if so, entering the step S2, otherwise, rotating the projection picture of the projection equipment until the adjacent sides of the projection images are parallel to each other, and entering the step S2.
Because of the influence of the fixed position of each projection device, the adjacent sides of the projection images projected to the display wall or the display panel may be not parallel to each other, and therefore, before the distance between the projection image corresponding to each projection device and the adjacent side of the adjacent projection image is analyzed, the parallel state of the adjacent side of each projection image is judged.
Optionally, the moving the projection screen of the projection device includes:
and fixing one projection picture, and moving the other projection pictures until the distance between the projection image corresponding to each projection device and the adjacent side of the adjacent projection image is zero.
As shown in fig. 2, the projection screen of the projection apparatus 1 may be fixed, the projection screens of the projection apparatus 2, the projection apparatus 3, and the projection apparatus 4 may be geometrically corrected, and the projection screen of the fixed projection apparatus may be selected as needed.
Optionally, the moving the projection screen of the projection apparatus further includes:
and moving a certain projection picture along a certain direction, and if the distance between the image of the projection picture and the adjacent side of the adjacent projection image is increased, moving the projection picture along the opposite direction of the direction.
As shown in fig. 2, for example, if the projection screen of the projection apparatus 1 is moved to the left, and the value of a after movement increases according to the distance a between the projection apparatus 1 and the adjacent side of the projection apparatus 2 analyzed in real time, which indicates that the movement direction is wrong, the projection screens of the projection apparatuses are moved to the right, and are sequentially classified, and the projection screens of the projection apparatuses are geometrically corrected, so that the efficiency of geometrically correcting the projection screens of the projection apparatuses can be improved.
Based on the above technical solution, an embodiment of the present invention further provides a system for seamlessly splicing images of projection devices, including:
the image acquisition module is used for acquiring projection images of all the projection devices in real time and sending the projection images to the image analysis module;
the image analysis module is used for receiving the projection images and analyzing the distances between the projection images corresponding to the projection equipment and the adjacent edges of the adjacent projection images in real time according to the projection images;
and the projection equipment geometric correction module is used for moving the projection picture of the projection equipment according to the distance between the projection image corresponding to each projection equipment and the adjacent side of the adjacent projection image until the distance between the projection image corresponding to each projection equipment and the adjacent side of the adjacent projection image is zero.
The system for seamlessly splicing the images of the projection equipment is a system for realizing the method for seamlessly splicing the images of the projection equipment, and the method corresponds to the method disclosed by the embodiment, so that the description is simpler, and related points can be referred to the description of the method part.
Claims (4)
1. The seamless splicing method for the images of the projection equipment is characterized by comprising the following steps of:
s1, collecting projection images of each projection device in real time, judging whether adjacent sides of each projection image are parallel, if so, entering a step S2, otherwise, rotating a projection picture of the projection device until the adjacent sides of each projection image are parallel to each other, and entering a step S2;
s2, analyzing the distance between the projection image corresponding to each projection device and the adjacent side of the adjacent projection image in real time according to the projection image;
s3, geometrically correcting the projection picture of each projection device until the distance between the projection image corresponding to each projection device and the adjacent side of the adjacent projection image is zero, wherein geometrically correcting the projection picture of each projection device comprises the following steps:
and fixing one projection picture, and moving the other projection pictures until the distance between the projection image corresponding to each projection device and the adjacent side of the adjacent projection image is zero.
2. The method for seamlessly stitching projection device images as recited in claim 1, wherein the step of acquiring the projection images of the respective projection devices in real time further comprises:
and splitting the complete image and then sending the split image to each projection device, wherein the number of the projection images of the split complete image is equal to that of the projection devices.
3. The method for seamlessly splicing images of projection devices according to claim 1, wherein the geometrically correcting the projection pictures of each projection device further comprises:
and moving a certain projection picture along a certain direction, and if the distance between the image of the projection picture and the adjacent side of the adjacent projection image is increased, moving the projection picture along the opposite direction of the direction.
4. A system for seamless stitching of images of a projection device, comprising:
the image acquisition module is used for acquiring projection images of all the projection devices in real time and sending the projection images to the image analysis module;
the image analysis module is used for receiving the projection images, judging whether the adjacent sides of the projection images are parallel or not, rotating the projection pictures of the projection equipment if the adjacent sides of the projection images are not parallel, until the adjacent sides of the projection images are parallel to each other, and analyzing the distance between the projection image corresponding to each projection equipment and the adjacent side of the adjacent projection image in real time according to the projection images;
a projection device geometric correction module, configured to geometrically correct a projection picture of a projection device according to a distance between a projection image corresponding to each projection device and an adjacent edge of an adjacent projection image until the distance between the projection image corresponding to each projection device and the adjacent edge of the adjacent projection image is zero, where geometrically correcting the projection picture of each projection device includes:
and fixing one projection picture, and moving the other projection pictures until the distance between the projection image corresponding to each projection device and the adjacent side of the adjacent projection image is zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811413081.2A CN109257583B (en) | 2018-11-23 | 2018-11-23 | Seamless splicing method and system for images of projection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811413081.2A CN109257583B (en) | 2018-11-23 | 2018-11-23 | Seamless splicing method and system for images of projection equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109257583A CN109257583A (en) | 2019-01-22 |
| CN109257583B true CN109257583B (en) | 2020-09-29 |
Family
ID=65042019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811413081.2A Active CN109257583B (en) | 2018-11-23 | 2018-11-23 | Seamless splicing method and system for images of projection equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109257583B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110769228B (en) * | 2019-04-30 | 2022-05-06 | 成都极米科技股份有限公司 | Method and device for realizing projection picture splicing and projection system |
| CN110361560B (en) * | 2019-06-25 | 2021-10-26 | 中电科技（合肥）博微信息发展有限责任公司 | Ship navigation speed measuring method and device, terminal equipment and computer readable storage medium |
| CN112584112B (en) * | 2020-12-02 | 2023-10-03 | 深圳市当智科技有限公司 | Projection method, system and readable storage medium based on size correction |
| CN114245034B (en) * | 2021-12-13 | 2023-07-04 | 惠州华星光电显示有限公司 | Tiled display driving method, device, server and storage medium |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101727880B (en) * | 2009-11-23 | 2012-02-15 | 清投视讯(北京)科技有限公司 | Projection fusion method of true seamless rear projection large screen display image |
| US8444272B2 (en) * | 2010-01-25 | 2013-05-21 | Corning Incorporated | Multi-projector system using multiplexed illumination |
| CN106060493A (en) * | 2016-07-07 | 2016-10-26 | 广东技术师范学院 | Multi-source projection seamless edge stitching method and system |
-
2018
- 2018-11-23 CN CN201811413081.2A patent/CN109257583B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109257583A (en) | 2019-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109257583B (en) | Seamless splicing method and system for images of projection equipment | |
| CN100523993C (en) | Multiscreen playing automatically integrating pretreatment method suitable for irregular screen | |
| CN105786431A (en) | Jointing screen and method and device for achieving automatic distribution of display content of jointing screen | |
| US9501828B2 (en) | Image capturing device, image capturing device control method, and program | |
| CN109472829B (en) | Object positioning method, device, equipment and storage medium | |
| CN1758720A (en) | Image processing method and image processing device | |
| CN107135330B (en) | Method and device for video frame synchronization | |
| KR102558704B1 (en) | Object detection method and apparatus, computer system, and readable storage medium | |
| US10129471B2 (en) | Method, apparatus and system for detecting location of laser point on screen | |
| CN103795920A (en) | Photo processing method and device | |
| CN103248855B (en) | Course recording system based on fixing seat in the plane, video process apparatus and record class method | |
| RU2580473C1 (en) | Device to seamlessly merge the images into a single composition with automatic contrast adjustment and gradients | |
| CN111383204A (en) | Video image fusion method, fusion device, panoramic monitoring system and storage medium | |
| CN102426514A (en) | Synchronous displaying method and device for large-screen spliced wall | |
| CN105092473A (en) | Polysilicon thin film quality detection method and system | |
| CN107809563A (en) | A kind of writing on the blackboard detecting system, method and device | |
| US10536677B2 (en) | Image processing apparatus and method | |
| CN104793450A (en) | Dual-unit superposition adjusting method and system for digital film projectors | |
| CN103795927A (en) | Photographing method and system | |
| CN113938617A (en) | Multi-channel video display method and equipment, network camera and storage medium | |
| CN105578179A (en) | System and method for detecting display frame rate of DMD (Digital Micro-mirror Device) | |
| CN114565952A (en) | Pedestrian trajectory generation method, device, equipment and storage medium | |
| CN108510457B (en) | Image correction method and device and display equipment | |
| CN105719235A (en) | Circular scanning based video image splicing and split-screen display method | |
| RU2571574C1 (en) | Device to combine images into single composition with smooth contrast transition |
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 |