CN106791482A - A kind of video-splicing method that platform is thought based on sea - Google Patents
A kind of video-splicing method that platform is thought based on sea Download PDFInfo
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- CN106791482A CN106791482A CN201611148688.3A CN201611148688A CN106791482A CN 106791482 A CN106791482 A CN 106791482A CN 201611148688 A CN201611148688 A CN 201611148688A CN 106791482 A CN106791482 A CN 106791482A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/2628—Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/265—Mixing
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Image Processing (AREA)
Abstract
The present invention discloses a kind of video-splicing method based on sea think of platform, including a picture is cut into N number of small picture；Small picture after to cutting is zoomed in and out；Small picture after by scaling is exported to corresponding position on combination；Thinking Hi3536 chips using sea carries out above operation.The present invention takes in device cost and on the construction cycle, the video-splicing scheme that Hi3536 chips are thought based on sea is provided, the support for having used mathematical operation and operation of the image processing engine carried inside the SOC of Hai Si to video image to provide on hardware, can realize scaling easily and be superimposed, sea thinks to carry Video Decoder resource inside SOC simultaneously, realize realizing video-splicing processor is integrated on one chip, traditional " decoding processor+FPGA " structure can not be used to realize video-splicing.
Description
Technical field
The present invention relates to video-splicing field, and in particular to a kind of video-splicing method that platform is thought based on sea.
Background technology
Video-splicing wall is to be stitched together to collectively form the application that a large-size screen monitors are shown by multiple display units.Pass
The video-splicing processor of system needs to use the framework of " decoding processor+FPGA ", wherein decoding processor to realize the solution of video
Code, and FPGA realizes that video cuts, scales and superposition algorithm.Such framework is with high costs, in addition, using folding that FPGA is realized
Computation system time delay is minimum, but development difficulty is big, and the construction cycle is long.And because vedio data amount is huge if being realized using CPU,
Frequently copy, storage and computing can increase CPU burdens, cause CPU usage high, it is impossible to reprocess other affairs.
And continuing to develop with video processing technique, all kinds of combination users, such as tactical operations center, railway administration center
Also show big-wall splicing effect technical requirements higher Deng client, for example pursue high real-time, the superposition number of plies many and low
Cost.Structure as CPU obviously cannot meet the demand of user, and high cost exploitation input high " decoding processor+
FPGA " cannot also meet user's request.
The content of the invention
Present invention aim to address the defect of prior art, there is provided one kind can improve real-time, realize video easily
The video-splicing method of Graphics overlay and scaling, the technical scheme of use is as follows：
A kind of video-splicing method that platform is thought based on sea, including：
One picture is cut into N number of small picture；
Small picture after to cutting is zoomed in and out；
Small picture after by scaling is exported to corresponding position on combination；
Characterized in that, thinking Hi3536 chips using sea carries out above operation.
Further, when there are multiple pictures to be superimposed, then each picture cut respectively, scaled, then
It is respectively outputted to corresponding position on combination.
Assuming that there are multiple pictures to be superimposed, then folded on each display unit respectively after being cut to image block
Plus, so, multiple display units just show the complete multiple-layer stacked picture of a width jointly.
Further, in the present invention, carry out carrying out video pixel copy using dma mode when video is superimposed.
Video overlap-add operation is in fact that copy is carried out to multiple image, and sea is thought Hi3536 chips and provides dma operation, energy
It is enough that efficiently image pixel data is copied, extremely low cpu resource is consumed, even if being overlapped to multiple videos, still can
The video simply is copied directly into specified location, and is superimposed the time has enough surpluses, and frame per second control will not be caused
Influence.Think the explanation of Hi3536 chips in sea to be described, interchannel is unable in same video layer and is superimposed, and Hi3536 chips
Only two HD video layers, therefore traditional stacking method only supports that 2 layers of 1080p is superimposed, and the present invention uses dma mode
Video pixel copy is carried out, 16 layers of superposition performance of 1080p 30 are realized.
Compared with prior art, beneficial effects of the present invention：
The present invention is taken in device cost and on the construction cycle, there is provided the video-splicing side of Hi3536 chips is thought based on sea
Case, has used the image processing engine carried inside the SOC of Hai Si to provide hard to the mathematical operation of video image and image manipulation
Support on part, can be realized scaling easily and be superimposed, while sea thinks to carry Video Decoder resource inside SOC, realization will be regarded
Frequency splicing device is integrated to be realized on one chip, and traditional " decoding processor+FPGA " structure can not be used to realize regarding
Frequency splices.
Brief description of the drawings
Fig. 1 is the flow chart of the embodiment of the present invention；
Fig. 2 is the schematic diagram that the embodiment of the present invention is cut to image；
Fig. 3 is the schematic diagram cut to image in the case of the embodiment of the present invention is superimposed to 2 pictures；
Fig. 4 is the design sketch that the embodiment of the present invention is superimposed to 16 layer videos.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawings and examples.
As shown in figure 1, a kind of video-splicing method that platform is thought based on sea, including：
One picture is cut into N number of small picture；
Small picture after to cutting is zoomed in and out；
Small picture output after by scaling to corresponding position on combination, as shown in Figure 2；
Thinking Hi3536 chips using sea carries out above operation.
Further, when there are multiple pictures to be superimposed, then each picture cut respectively, scaled, then
It is respectively outputted to corresponding position on combination.
Assuming that there are multiple pictures to be superimposed, then folded on each display unit respectively after being cut to image block
Plus, so, multiple display units just show 2 layers of complete overlay drafting of a width jointly, as shown in Figure 3.
In the present embodiment, carry out carrying out video pixel copy using dma mode when video is superimposed.
Video overlap-add operation is in fact that copy is carried out to multiple image, and sea is thought Hi3536 chips and provides dma operation, energy
It is enough that efficiently image pixel data is copied, cpu resource will not be consumed, even if being overlapped to multiple videos, still can
The video is simply copied directly to specified location, the video of the present embodiment test Neng Dui 16 road 1080p 30 is folded in real time
Plus, as shown in Figure 4.And, one frame of superposition only needs 18ms, works well, for the video of 30 frames/second, one frame time interval
For 1/30s=33.33ms and it is superimposed the time and there are enough surpluses, frame per second control will not be impacted.
Claims (3)
1. a kind of based on the extra large video-splicing method for thinking platform, including：
One picture is cut into N number of small picture；
Small picture after to cutting is zoomed in and out；
Small picture after by scaling is exported to corresponding position on combination；
Characterized in that, thinking Hi3536 chips using sea carries out above operation.
2. a kind of video-splicing method that platform is thought based on sea according to claim 1, it is characterised in that when there is multiple pictures
When face is superimposed, then each picture is cut respectively, scaled, be then respectively outputted to corresponding position on combination
Put.
3. it is according to claim 2 a kind of based on the extra large video-splicing method for thinking platform, it is characterised in that to use DMA side
Formula carries out video pixel copy.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611148688.3A CN106791482A (en) | 2016-12-13 | 2016-12-13 | A kind of video-splicing method that platform is thought based on sea |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611148688.3A CN106791482A (en) | 2016-12-13 | 2016-12-13 | A kind of video-splicing method that platform is thought based on sea |
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| CN106791482A true CN106791482A (en) | 2017-05-31 |
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| CN201611148688.3A Pending CN106791482A (en) | 2016-12-13 | 2016-12-13 | A kind of video-splicing method that platform is thought based on sea |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108769548A (en) * | 2018-04-26 | 2018-11-06 | 深圳市微智体技术有限公司 | A kind of decoding video output system and method |
| CN110290332A (en) * | 2018-03-19 | 2019-09-27 | 北京蛙视软件技术有限公司 | A kind of method and apparatus of superimposed image |
| CN110312158A (en) * | 2018-03-27 | 2019-10-08 | 北京市博汇科技股份有限公司 | A kind of monitoring method and device of embedded more pictures |
| CN111064906A (en) * | 2019-11-27 | 2020-04-24 | 北京计算机技术及应用研究所 | Domestic processor and domestic FPGA multi-path 4K high-definition video comprehensive display method |
| CN111083394A (en) * | 2019-12-18 | 2020-04-28 | 南京巨鲨显示科技有限公司 | High-efficiency video splicing device and method |
| CN113163137A (en) * | 2021-04-29 | 2021-07-23 | 众立智能科技(深圳)有限公司 | Method and system for realizing multi-picture superposition of Haisi coding and decoding chip |
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| US20030016292A1 (en) * | 2001-07-23 | 2003-01-23 | Lee Sung Min | Image data control system and method |
| CN1688160A (en) * | 2005-04-30 | 2005-10-26 | 广东威创日新电子有限公司 | Split display image edge blending method for large screen |
| CN103685982A (en) * | 2013-12-02 | 2014-03-26 | 广东威创视讯科技股份有限公司 | Method and system for switching scenes on basis of multiple images |
| CN103795980A (en) * | 2014-01-25 | 2014-05-14 | 武汉烽火众智数字技术有限责任公司 | Cascading video device and data processing method thereof |
| CN104767973A (en) * | 2015-04-08 | 2015-07-08 | 北京航空航天大学 | Multi-channel video real-time wireless transmission and display system and construction method |
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| US20030016292A1 (en) * | 2001-07-23 | 2003-01-23 | Lee Sung Min | Image data control system and method |
| CN1688160A (en) * | 2005-04-30 | 2005-10-26 | 广东威创日新电子有限公司 | Split display image edge blending method for large screen |
| CN103685982A (en) * | 2013-12-02 | 2014-03-26 | 广东威创视讯科技股份有限公司 | Method and system for switching scenes on basis of multiple images |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110290332A (en) * | 2018-03-19 | 2019-09-27 | 北京蛙视软件技术有限公司 | A kind of method and apparatus of superimposed image |
| CN110312158A (en) * | 2018-03-27 | 2019-10-08 | 北京市博汇科技股份有限公司 | A kind of monitoring method and device of embedded more pictures |
| CN108769548A (en) * | 2018-04-26 | 2018-11-06 | 深圳市微智体技术有限公司 | A kind of decoding video output system and method |
| CN111064906A (en) * | 2019-11-27 | 2020-04-24 | 北京计算机技术及应用研究所 | Domestic processor and domestic FPGA multi-path 4K high-definition video comprehensive display method |
| CN111083394A (en) * | 2019-12-18 | 2020-04-28 | 南京巨鲨显示科技有限公司 | High-efficiency video splicing device and method |
| CN111083394B (en) * | 2019-12-18 | 2022-03-01 | 南京巨鲨显示科技有限公司 | High-efficiency video splicing device and method |
| CN113163137A (en) * | 2021-04-29 | 2021-07-23 | 众立智能科技(深圳)有限公司 | Method and system for realizing multi-picture superposition of Haisi coding and decoding chip |
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Application publication date: 20170531 |