CN113891025A - TDA4 development board-based 4-path camera video recording method - Google Patents
TDA4 development board-based 4-path camera video recording method Download PDFInfo
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- CN113891025A CN113891025A CN202111261108.2A CN202111261108A CN113891025A CN 113891025 A CN113891025 A CN 113891025A CN 202111261108 A CN202111261108 A CN 202111261108A CN 113891025 A CN113891025 A CN 113891025A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 101100480851 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) TDA4 gene Proteins 0.000 title claims abstract description 15
- 230000004927 fusion Effects 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
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- Television Signal Processing For Recording (AREA)
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Abstract
The invention belongs to the technical field of video recording, and relates to a method for recording a video by using a 4-channel camera based on a TDA4 development board; the method comprises the following steps that a J721EXCPXEVM development board is connected with a video fusion board EVM577 PFUSION-V1-0; the LVDS interface of the video fusion plate is connected with a camera of a UB933 serializer of the 4-channel AR 0143; after the drive configuration is completed, lightening the development board; capturing 4 paths of camera image data, wherein the image format is UYVY; adopting a J721EXCPXEVM development board and a J721EXSOMXEVM core board; changing the image format into NV12 format through an image data conversion module by using the image data in the UYVY format; the image data in NV12 format is converted into RGB image data to set code rate, coded and finally output to a local avi video file. The general all-round looking camera that prior art relates to is only used for showing the vehicle condition all around, does not record the video and keeps local function, the invention can record the video of each camera and keep into the local file of the avi form at any time in the car.
Description
Technical Field
The invention belongs to the technical field of video recording, and relates to a method for recording a video by using a 4-channel camera based on a TDA4 development board.
Background
The vehicle-mounted all-round looking system is composed of a plurality of wide-angle cameras which are assembled on a vehicle body in a front-back left-right mode, each camera covers a certain interval, images displayed by the 4 cameras in the front-back left-right mode can be used for visually seeing the surrounding situation of a vehicle, and a driver is prevented from rubbing during driving or backing. The invention is based on a TDA4 development board, connects 4 paths of front, back, left and right cameras, generally looks around the cameras only for displaying the surrounding situation of the vehicle, does not record videos and saves the videos into local files in an avi format.
Disclosure of Invention
The invention aims to provide a method for recording videos by a 4-path camera based on a TDA4 development board, so as to solve the problem that a general all-round looking camera is only used for displaying the surrounding situation of a vehicle, and does not record videos and save local functions.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme, which is described by combining the accompanying drawings as follows:
it is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
A method for recording videos by 4-path cameras based on a TDA4 development board comprises the following steps:
the J721EXCPXEVM development board is connected with a video fusion board EVM577 PFUSION-V1-0;
the LVDS interface of the video fusion plate is connected with a camera of a UB933 serializer of the 4-channel AR 0143;
after the drive configuration is completed, lightening the development board;
and 4-path camera image data is captured, and the image format is UYVY.
Preferably, a J721EXCPXEVM development board and a J721EXSOMXEVM core board are used.
Further, the image format is changed to NV12 format by the image data conversion module using the image data in the UYVY format.
Further, image data in NV12 format is used and converted into RGB image data
Further, setting code rate and coding format, and finally outputting the code rate and coding format to a local avi video file
Further, the driving configuration refers to: the method comprises the steps of configuring camera driving of an UB933 serializer of an AR0143, configuring input voltage to be 3.3V, configuring and opening all data transmission interfaces, configuring 4 paths of camera channels, configuring and selecting a CSI-0 interface, configuring 4 paths of GPIOs for sensor synchronization, configuring 4 paths of camera sensor addresses, configuring camera original data to be in a RAW10 format, and configuring a CSI mode to be in a RAW mode.
Compared with the prior art, the invention has the beneficial effects that:
the general all-round looking camera related to the prior art is only used for displaying the surrounding situation of the vehicle, and does not have the function of recording and storing videos, and the invention can record the videos of all the cameras in the vehicle at any time and store the videos into local files in an avi format, thereby preventing drivers from rubbing during driving or backing, and providing the stored files for solving traffic accidents.
Drawings
The invention is further described with reference to the accompanying drawings in which:
fig. 1 is a flowchart of a method for recording a video by a 4-channel camera based on a TDA4 development board according to the present invention.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.
To more clearly illustrate the technical solution of the embodiment of the present invention, the drawings required in the embodiment will be briefly described below, and fig. 1 is a flowchart of the present invention, where an application program first drives 4-way camera drivers, mainly writes instructions into register addresses of a UB960 chip in a TDA4 development board, drives a camera to connect with the development board, so that the development board can read image data of the camera, sets a code rate and a video format using the application program, and finally stores the recorded video in a local format of avi.
The invention adopts a J721EXCPXEVM development board and a J721EXSOMXEVM core board.
The J721EXCPXEVM development board was connected to a video fusion board (EVM577 PFUSION-V1-0).
After the LVDS interface of the video fusion board is connected with the camera of the UB933 serializer of the 4 paths of AR0143, the camera drive of the UB933 serializer of the AR0143 is configured, the input voltage is configured to be 3.3V, all data transmission interfaces are configured to be opened, 4 paths of camera channels are configured, a CSI-0 interface is selected, 4 paths of GPIOs used for sensor synchronization are configured, 4 paths of camera sensor addresses are configured, the original data of the camera is configured to be in a RAW10 format, and a CSI mode is configured to be in a RAW mode.
After the drive configuration is completed, the development board is lighted.
And 4-path camera image data is captured, and the image format is UYVY.
The image format is changed to NV12 format by the image data conversion module using the image data in the UYVY format.
Image data in NV12 format is used, and converted into RGB image data.
Setting code rate and coding format, and finally outputting to a local avi video file.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims. And those not described in detail in this specification are well within the skill of those in the art.
Claims (6)
1. A method for recording videos by a 4-path camera based on a TDA4 development board is characterized by comprising the following steps:
the J721EXCPXEVM development board is connected with a video fusion board EVM577 PFUSION-V1-0;
the LVDS interface of the video fusion plate is connected with a camera of a UB933 serializer of the 4-channel AR 0143;
after the drive configuration is completed, lightening the development board;
and 4-path camera image data is captured, and the image format is UYVY.
2. The TDA4 development board-based 4-way camera video recording method according to claim 1, characterized in that:
a J721EXCPXEVM development board and a J721EXSOMXEVM core board are adopted.
3. The TDA4 development board-based 4-way camera video recording method according to claim 2, further comprising:
the image format is changed to NV12 format by the image data conversion module using the image data in the UYVY format.
4. The TDA4 development board-based 4-way camera video recording method according to claim 3, further comprising:
image data in NV12 format is used, and converted into RGB image data.
5. The TDA4 development board-based 4-way camera video recording method according to claim 4, further comprising:
setting code rate and coding format, and finally outputting to a local avi video file.
6. The TDA4 development board-based 4-way camera video recording method according to claim 1, characterized in that:
the driving configuration is that: the method comprises the steps of configuring camera driving of an UB933 serializer of an AR0143, configuring input voltage to be 3.3V, configuring and opening all data transmission interfaces, configuring 4 paths of camera channels, configuring and selecting a CSI-0 interface, configuring 4 paths of GPIOs for sensor synchronization, configuring 4 paths of camera sensor addresses, configuring camera original data to be in a RAW10 format, and configuring a CSI mode to be in a RAW mode.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202986966U (en) * | 2013-01-09 | 2013-06-12 | 无锡安睿驰科技有限公司 | Live-action looking driving assisting system being suitable for multiple vehicles |
| KR20140069855A (en) * | 2012-11-30 | 2014-06-10 | 주식회사 에이치디비정보통신 | Apparatus and method for video recording for vehicles |
| CN103856761A (en) * | 2014-03-14 | 2014-06-11 | 山东大学 | Image monitoring system based on Zynq-7000 |
| CN106791689A (en) * | 2017-01-04 | 2017-05-31 | 深圳源诚技术有限公司 | A kind of intelligent back vision mirror multi-cam monitoring system and its implementation |
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- 2021-10-28 CN CN202111261108.2A patent/CN113891025A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140069855A (en) * | 2012-11-30 | 2014-06-10 | 주식회사 에이치디비정보통신 | Apparatus and method for video recording for vehicles |
| CN202986966U (en) * | 2013-01-09 | 2013-06-12 | 无锡安睿驰科技有限公司 | Live-action looking driving assisting system being suitable for multiple vehicles |
| CN103856761A (en) * | 2014-03-14 | 2014-06-11 | 山东大学 | Image monitoring system based on Zynq-7000 |
| CN106791689A (en) * | 2017-01-04 | 2017-05-31 | 深圳源诚技术有限公司 | A kind of intelligent back vision mirror multi-cam monitoring system and its implementation |
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