CN113938608A - Unmanned aerial vehicle image-transmission video method - Google Patents
Unmanned aerial vehicle image-transmission video method Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
- H04N7/185—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source from a mobile camera, e.g. for remote control
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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
- H04N23/60—Control of cameras or camera modules
- H04N23/64—Computer-aided capture of images, e.g. transfer from script file into camera, check of taken image quality, advice or proposal for image composition or decision on when to take image
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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
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
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Abstract
The invention relates to the field of unmanned aerial vehicle image transmission video, in particular to an image transmission video method of an unmanned aerial vehicle. Including unmanned aerial vehicle and ground terminal, unmanned aerial vehicle and ground terminal group become the picture and pass the video system, the picture passes the video system and includes that the picture passes video acquisition module, picture and passes video coding module, wireless transmission module A, wireless transmission module B, picture pass video decoding module, picture pass video playing module, picture and pass video analysis module, picture and pass video storage module, the picture passes video acquisition module, picture and passes video coding module, wireless transmission module A and all sets up on unmanned aerial vehicle, wireless transmission module B, picture pass video decoding module, picture and pass video playing module, picture and pass video analysis module, picture and pass video storage module and all set up on ground terminal. The invention aims to provide an unmanned aerial vehicle image transmission video method which meets user requirements, can dynamically adjust resolution and edit images and videos and is based on WiFi image transmission.
Description
Technical Field
The invention relates to the field of unmanned aerial vehicle image transmission video, in particular to an image transmission video method of an unmanned aerial vehicle.
Background
The unmanned aerial vehicle is an unmanned aerial vehicle, and has the characteristics of small volume, low manufacturing cost, convenience in use, low requirement on flight environment, high anti-interference capability and the like, so that the unmanned aerial vehicle is widely applied to various fields such as the express industry, the vacation and tourism industry, the sports and media industry, the security and law enforcement industry and the like. Unmanned aerial vehicle picture passes the video and is the unmanned aerial vehicle that will carry on the camera, the remote controller is connected with the mobile device, and then realize remote control and shoot and wireless transmission's function, therefore unmanned aerial vehicle picture passes the video technique and is used widely in fields such as remote monitoring, remote control investigation, long-range framing shooting, unmanned aerial vehicle picture passes the relatively more ripe that the video technique has developed among the prior art, can realize relatively long-distance video transmission, the interference killing feature of the video signal of simultaneous transmission, the efficiency of transmission and the quality of transmission are all lower.
Disclosure of Invention
The invention aims to provide an unmanned aerial vehicle image transmission video method which meets user requirements, can dynamically adjust resolution and edit images and videos and is based on WiFi image transmission.
The technical scheme adopted by the invention is as follows: an unmanned aerial vehicle image-based video transmission method is characterized in that: the unmanned aerial vehicle and the ground terminal form a picture transmission video system, the picture transmission video system comprises a picture transmission video acquisition module, a picture transmission video coding module, a wireless transmission module A, a wireless transmission module B, a picture transmission video decoding module, a picture transmission video playing module, a picture transmission video analysis module, a picture transmission video storage module and a picture transmission video editing module, the picture transmission video acquisition module, the picture transmission video coding module and the wireless transmission module A are all arranged on the unmanned aerial vehicle, and the wireless transmission module B, the picture transmission video decoding module, the picture transmission video playing module, the picture transmission video analysis module, the picture transmission video storage module and the picture transmission video editing module are all arranged on the ground terminal.
The image transmission video acquisition module compresses and encodes acquired images and videos through the image transmission video decoding module, the images and videos compressed and encoded through the image transmission video decoding module send signals A through the wireless transmission module A, the wireless transmission module B receives the signals A sent by the wireless transmission module A, the signals A are decoded through the image transmission video encoding module to obtain decoded images and videos, the decoded images and videos are played through the image transmission video playing module, the decoded images and videos can be analyzed through the image transmission video analyzing module, the decoded images and videos are stored through the image transmission video storage module, and the decoded images and videos are edited through the image transmission video editing module.
The image-transmission video analysis module analyzes the quality of the decoded image and video and sends an instruction to the wireless transmission module B, the wireless transmission module B receives the instruction and sends a signal B, the wireless transmission module A receives the signal B sent by the wireless transmission module B and transmits the signal B to the image-transmission video coding module, and the image-transmission video coding module receives the signal B and executes the instruction, so that the output resolution of the image and video coding is dynamically changed.
The image-transmitting video editing module can perform free rotation at any angle and free zooming in a certain range on the decoded image and video, and the specific steps of the free rotation at any angle on the decoded image and video are as follows:
the method comprises the following steps: detecting touch screen coordinates and recording initial coordinates and sliding coordinates, and detecting coordinates of a mobile terminal user touching a screen at a certain frequency, such as single-finger touch, recording initial single coordinates and coordinates of finger sliding, such as double-finger touch, and recording initial two coordinates and track coordinates of double-finger sliding;
step two: calculating the sliding angle and speed of the finger, and calculating the sliding angle and speed of the finger by taking the image center as a rotation center according to a vector included angle formula, wherein the vector included angle formula is as follows:
the center coordinate of the image is (x)c，yc) The coordinates of the start point and the end point of the finger sliding are (x) respectively0，y0)、(x1，y1) Then, there are:
the rotating angle can be obtained according to a formula, the finger sliding time t needs to be measured, and the angular velocity calculation formula is as follows:
any point (x) of the image0，y0) If the coordinate is (x, y) after clockwise rotating by an angle a with the center of the image as the center of the circle, then:
step three: determining the number of turns of the video image which needs to be rotated, if the rotating speed is greater than a given threshold value T, considering that a user wants to rapidly rotate the video image, and determining the number of turns of the video image which needs to be rotated according to the speed;
step four: rotating the image, considering that the user wants to rotate the video image slowly if the rotation speed is less than a given threshold T, rotating the image according to the calculated angle,
the specific steps of freely scaling the decoded image and video within a certain range are as follows:
the method comprises the following steps: detecting touch screen coordinates and recording initial coordinates, detecting coordinates of double-finger touch screen of mobile terminal user at a certain frequency, and recording initial two coordinate points (x)10，y10)、(x20，y20)；
Step two: recording the coordinates after change, recording the coordinates (x) of the touch screen after the change of the two fingers11，y11)、(x21，y21)；
Step three: and scaling the view image, wherein the scaling is determined by the following formula:
the image-transmission video acquisition module is a special aerial camera for the unmanned aerial vehicle, the special aerial camera for the unmanned aerial vehicle has the functions of 30-time optical zooming, optical anti-shaking and night shooting, is internally provided with a high-definition camera core module and is provided with multiple control notches and a special weight-reducing support.
The wireless transmission module A and the wireless transmission module B are both WiFi image transmission modules, and the WiFi image transmission modules adopt working frequency bands of 2.4GHz or 5.8 GHz.
The image transmission video playing module is a display, and the image transmission video storage module is an SD storage card.
The image-transmission video coding module and the wireless transmission module A communicate through an Ethernet port.
The invention has the beneficial effects that: in the image-transmission video process of the unmanned aerial vehicle, the ground terminal can be used as a communication hotspot for sharing, so that video playing, video analysis, video playback, video analysis, video storage, video editing and the like are realized, and the image-transmission video analysis module can be used for analyzing the quality of images and videos, so that the resolution of the images and videos can be adjusted.
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Fig. 1 is a system overall block diagram of a video image transmission method of an unmanned aerial vehicle according to the present invention;
fig. 2 is a system feedback block diagram of a video-on-map method of an unmanned aerial vehicle of the present invention;
FIG. 3 is a flow chart of a dynamic resolution adjustment method for video-on-demand by an UAV of the present invention;
fig. 4 is an interface schematic diagram of a video image transmission method of a drone according to the present invention.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.
An unmanned aerial vehicle image-based video transmission method is characterized in that: the unmanned aerial vehicle and the ground terminal form a picture transmission video system, the picture transmission video system comprises a picture transmission video acquisition module, a picture transmission video coding module, a wireless transmission module A, a wireless transmission module B, a picture transmission video decoding module, a picture transmission video playing module, a picture transmission video analysis module, a picture transmission video storage module and a picture transmission video editing module, the picture transmission video acquisition module, the picture transmission video coding module and the wireless transmission module A are all arranged on the unmanned aerial vehicle, and the wireless transmission module B, the picture transmission video decoding module, the picture transmission video playing module, the picture transmission video analysis module, the picture transmission video storage module and the picture transmission video editing module are all arranged on the ground terminal.
The image transmission video acquisition module compresses and encodes acquired images and videos through the image transmission video decoding module, the images and videos compressed and encoded through the image transmission video decoding module send signals A through the wireless transmission module A, the wireless transmission module B receives the signals A sent by the wireless transmission module A, the signals A are decoded through the image transmission video encoding module to obtain decoded images and videos, the decoded images and videos are played through the image transmission video playing module, the decoded images and videos can be analyzed through the image transmission video analyzing module, the decoded images and videos are stored through the image transmission video storage module, and the decoded images and videos are edited through the image transmission video editing module.
The image-transmission video analysis module analyzes the quality of the decoded image and video and sends an instruction to the wireless transmission module B, the wireless transmission module B receives the instruction and sends a signal B, the wireless transmission module A receives the signal B sent by the wireless transmission module B and transmits the signal B to the image-transmission video coding module, and the image-transmission video coding module receives the signal B and executes the instruction, so that the output resolution of the image and video coding is dynamically changed.
The image-transmitting video editing module can perform free rotation at any angle and free zooming in a certain range on the decoded image and video, and the specific steps of the free rotation at any angle on the decoded image and video are as follows:
the method comprises the following steps: detecting touch screen coordinates and recording initial coordinates and sliding coordinates, and detecting coordinates of a mobile terminal user touching a screen at a certain frequency, such as single-finger touch, recording initial single coordinates and coordinates of finger sliding, such as double-finger touch, and recording initial two coordinates and track coordinates of double-finger sliding;
step two: calculating the sliding angle and speed of the finger, and calculating the sliding angle and speed of the finger by taking the image center as a rotation center according to a vector included angle formula, wherein the vector included angle formula is as follows:
the center coordinate of the image is (x)c，yc) The coordinates of the start point and the end point of the finger sliding are (x) respectively0，y0)、(x1，y1) Then, there are:
the rotating angle can be obtained according to a formula, the finger sliding time t needs to be measured, and the angular velocity calculation formula is as follows:
any point (x) of the image0，y0) If the coordinate is (x, y) after clockwise rotating by an angle a with the center of the image as the center of the circle, then:
step three: determining the number of turns of the video image which needs to be rotated, if the rotating speed is greater than a given threshold value T, considering that a user wants to rapidly rotate the video image, and determining the number of turns of the video image which needs to be rotated according to the speed;
step four: rotating the image, considering that the user wants to rotate the video image slowly if the rotation speed is less than a given threshold T, rotating the image according to the calculated angle,
the specific steps of freely scaling the decoded image and video within a certain range are as follows:
the method comprises the following steps: detecting touch screen coordinates and recording initial coordinates, detecting coordinates of double-finger touch screen of mobile terminal user at a certain frequency, and recording initial two coordinate points (x)10，y10)、(x20，y20)；
Step two: recording the coordinates after change, recording the coordinates (x) of the touch screen after the change of the two fingers11，y11)、(x21，y21)；
Step three: and scaling the view image, wherein the scaling is determined by the following formula:
the image-transmission video acquisition module is a special aerial camera for the unmanned aerial vehicle, the special aerial camera for the unmanned aerial vehicle has the functions of 30-time optical zooming, optical anti-shaking and night shooting, is internally provided with a high-definition camera core module and is provided with multiple control notches and a special weight-reducing support.
The wireless transmission module A and the wireless transmission module B are both WiFi image transmission modules, and the WiFi image transmission modules adopt working frequency bands of 2.4GHz or 5.8 GHz.
The image transmission video playing module is a display, and the image transmission video storage module is an SD storage card.
The image-transmission video coding module and the wireless transmission module A communicate through an Ethernet port.
The specific implementation mode of the invention is as follows: the aerial camera special for the unmanned aerial vehicle compresses and codes the collected images and videos through the image-transmission video decoding module, the images and videos compressed and coded through the image-transmission video decoding module send signals A through the WiFi-free image-transmission module A, the WiFi image-transmission module B receives the signals A sent by the WiFi image-transmission module A, the image-transmission video coding module decodes the signals A to obtain the decoded images and videos, the decoded images and videos are played through the display, the decoded images and videos can be analyzed through the image-transmission video analysis module, the decoded images and videos are stored through the SD memory card, the image-transmission video analysis module analyzes the quality of the decoded images and videos and sends instructions to the WiFi image-transmission module B, the WiFi image-transmission module B receives the instructions to send signals B, the WiFi image-transmission module A receives the signals B sent by the WiFi image-transmission module B and transmits the signals B to the image-transmission video coding module, the image-transmission video coding module receives the signal B and executes the instruction, so that the output resolution of image and video coding is dynamically changed, and when the ground terminal is used as a wireless communication hotspot, the image and video stored in the SD memory card can be shared with other mobile terminals, so that video playing, video analysis, video playback, video analysis, video storage, video editing and the like can be performed.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. An unmanned aerial vehicle image-based video transmission method is characterized in that: the unmanned aerial vehicle and the ground terminal form a picture transmission video system, the picture transmission video system comprises a picture transmission video acquisition module, a picture transmission video coding module, a wireless transmission module A, a wireless transmission module B, a picture transmission video decoding module, a picture transmission video playing module, a picture transmission video analysis module, a picture transmission video storage module and a picture transmission video editing module, the picture transmission video acquisition module, the picture transmission video coding module and the wireless transmission module A are all arranged on the unmanned aerial vehicle, and the wireless transmission module B, the picture transmission video decoding module, the picture transmission video playing module, the picture transmission video analysis module, the picture transmission video storage module and the picture transmission video editing module are all arranged on the ground terminal.
2. The unmanned aerial vehicle image-based video transmission method according to claim 1, wherein: the image transmission video acquisition module compresses and encodes acquired images and videos through the image transmission video decoding module, the images and videos compressed and encoded through the image transmission video decoding module send signals A through the wireless transmission module A, the wireless transmission module B receives the signals A sent by the wireless transmission module A, the signals A are decoded through the image transmission video encoding module to obtain decoded images and videos, the decoded images and videos are played through the image transmission video playing module, the decoded images and videos can be analyzed through the image transmission video analyzing module, the decoded images and videos are stored through the image transmission video storage module, and the decoded images and videos are edited through the image transmission video editing module.
3. The unmanned aerial vehicle image-based video transmission method according to claim 1, wherein: the image-transmission video analysis module analyzes the quality of the decoded image and video and sends an instruction to the wireless transmission module B, the wireless transmission module B receives the instruction and sends a signal B, the wireless transmission module A receives the signal B sent by the wireless transmission module B and transmits the signal B to the image-transmission video coding module, and the image-transmission video coding module receives the signal B and executes the instruction, so that the output resolution of the image and video coding is dynamically changed.
4. The unmanned aerial vehicle image-based video transmission method according to claim 1, wherein: the image-transmitting video editing module can perform free rotation at any angle and free zooming in a certain range on the decoded image and video, and the specific steps of the free rotation at any angle on the decoded image and video are as follows:
the method comprises the following steps: detecting touch screen coordinates and recording initial coordinates and sliding coordinates, and detecting coordinates of a mobile terminal user touching a screen at a certain frequency, such as single-finger touch, recording initial single coordinates and coordinates of finger sliding, such as double-finger touch, and recording initial two coordinates and track coordinates of double-finger sliding;
step two: calculating the sliding angle and speed of the finger, and calculating the sliding angle and speed of the finger by taking the image center as a rotation center according to a vector included angle formula, wherein the vector included angle formula is as follows:
the center coordinate of the image is (x)c，yc) The coordinates of the start point and the end point of the finger sliding are (x) respectively0，y0)、(x1，y1) Then, there are:
the rotating angle can be obtained according to a formula, the finger sliding time t needs to be measured, and the angular velocity calculation formula is as follows:
any point (x) of the image0，y0) If the coordinate is (x, y) after clockwise rotating by an angle a with the center of the image as the center of the circle, then:
step three: determining the number of turns of the video image which needs to be rotated, if the rotating speed is greater than a given threshold value T, considering that a user wants to rapidly rotate the video image, and determining the number of turns of the video image which needs to be rotated according to the speed;
step four: rotating the image, considering that the user wants to rotate the video image slowly if the rotation speed is less than a given threshold T, rotating the image according to the calculated angle,
the specific steps of freely scaling the decoded image and video within a certain range are as follows:
the method comprises the following steps: detecting touch screen coordinates and recording initial coordinates, detecting coordinates of double-finger touch screen of mobile terminal user at a certain frequency, and recording initial two coordinate points (x)10，y10)、(x20，y20)；
Step two: recording the coordinates after change, recording the coordinates (x) of the touch screen after the change of the two fingers11，y11)、(x21，y21)；
Step three: and scaling the view image, wherein the scaling is determined by the following formula:
5. the unmanned aerial vehicle image-based video transmission method according to claim 1, wherein: the image-transmission video acquisition module is a special aerial camera for the unmanned aerial vehicle, the special aerial camera for the unmanned aerial vehicle has the functions of 30-time optical zooming, optical anti-shaking and night shooting, is internally provided with a high-definition camera core module and is provided with multiple control notches and a special weight-reducing support.
6. The unmanned aerial vehicle image-based video transmission method according to claim 1, wherein: the wireless transmission module A and the wireless transmission module B are both WiFi image transmission modules, and the WiFi image transmission modules adopt working frequency bands of 2.4GHz or 5.8 GHz.
7. The unmanned aerial vehicle image-based video transmission method according to claim 1, wherein: the image transmission video playing module is a display, and the image transmission video storage module is an SD storage card.
8. The unmanned aerial vehicle image-based video transmission method according to claim 1, wherein: the image-transmission video coding module and the wireless transmission module A communicate through an Ethernet port.
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| CN105744222A (en) * | 2016-02-03 | 2016-07-06 | 普宙飞行器科技（深圳）有限公司 | Unmanned aerial vehicle wireless image/video transmission, sharing and storing system |
| CN207283720U (en) * | 2017-05-09 | 2018-04-27 | 北京航天泰坦科技股份有限公司 | A kind of unmanned plane video image transmission system based on satellite communication |
| CN109831687A (en) * | 2018-12-12 | 2019-05-31 | 深圳慧源创新科技有限公司 | Unmanned plane figure passes video editing method and technology |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105744222A (en) * | 2016-02-03 | 2016-07-06 | 普宙飞行器科技（深圳）有限公司 | Unmanned aerial vehicle wireless image/video transmission, sharing and storing system |
| CN207283720U (en) * | 2017-05-09 | 2018-04-27 | 北京航天泰坦科技股份有限公司 | A kind of unmanned plane video image transmission system based on satellite communication |
| CN109831687A (en) * | 2018-12-12 | 2019-05-31 | 深圳慧源创新科技有限公司 | Unmanned plane figure passes video editing method and technology |
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