CN111277797B - VR (virtual reality) stereoscopic imaging system for security monitoring - Google Patents
VR (virtual reality) stereoscopic imaging system for security monitoring Download PDFInfo
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- CN111277797B CN111277797B CN202010078901.8A CN202010078901A CN111277797B CN 111277797 B CN111277797 B CN 111277797B CN 202010078901 A CN202010078901 A CN 202010078901A CN 111277797 B CN111277797 B CN 111277797B
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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
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T15/00—3D [Three Dimensional] image rendering
- G06T15/005—General purpose rendering architectures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
- H04N13/106—Processing image signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
- H04N13/194—Transmission of image signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/20—Image signal generators
- H04N13/261—Image signal generators with monoscopic-to-stereoscopic image conversion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/327—Calibration thereof
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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
- H04N23/698—Control of cameras or camera modules for achieving an enlarged field of view, e.g. panoramic image capture
Abstract
The embodiment of the invention discloses a VR three-dimensional imaging system for security monitoring, which comprises: the VR camera unit is used for shooting panoramic images of monitored scenes, and the panoramic images comprise initial panoramic images and real-time panoramic images of all time periods; the data processing unit is used for rendering an initial VR stereo image according to the initial panoramic image; comparing the real-time panoramic image of the current time period with the real-time panoramic image of the previous time period, identifying a change area, and rendering a dynamic VR (virtual reality) stereo image of the change area; identifying the relative position information of the change area in a VR stereo image displayed by a VR display terminal; and sending the dynamic VR three-dimensional image and the relative position information to a VR display terminal, and displaying the VR three-dimensional image in the current time period at the VR display terminal. The invention can obviously improve the image rendering speed and the data transmission speed and effectively ensure the real-time performance of security monitoring.
Description
Technical Field
The invention relates to the technical field of VR security monitoring, in particular to a VR three-dimensional imaging system for security monitoring.
Background
The security monitoring system mainly comprises four modules, namely: the system comprises a front-end camera device, a transmission device, a data processing center and a display terminal. Although the security monitoring system is widely applied in modern society, the monitoring scene shot and displayed by the current security monitoring system is still a two-dimensional picture. Due to the wide and dense coverage of the monitoring network, not only a large number of display terminals are needed to display monitoring scenes, but also one display terminal can only display one angle, so that dead angles are easily generated.
In recent years, with the rise of VR (Virtual Reality) stereoscopic imaging technology, research has appeared to combine VR stereoscopic imaging technology in security monitoring systems, so as to upgrade a monitored scene from a two-dimensional picture to VR stereoscopic imaging.
However, in the process of implementing the present invention, the inventor finds that although the VR stereo imaging technology has been applied in a relatively mature field, the VR stereo imaging technology is still difficult to be applied in security monitoring systems. The reason is that the security monitoring system has complex and various networks and has high real-time requirements, and the existing VR security monitoring system has difficulty in meeting the real-time requirements of the security monitoring system, regardless of the image rendering speed or the image data transmission speed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a VR (virtual reality) stereoscopic imaging system for security monitoring, which can obviously improve the image rendering speed and the data transmission speed and effectively ensure the real-time performance of security monitoring.
In order to solve the technical problem, the invention discloses a VR three-dimensional imaging system for security monitoring, which comprises:
the VR camera unit is used for shooting panoramic images of monitored scenes, and the panoramic images comprise initial panoramic images and real-time panoramic images of all time periods;
the data processing unit is connected with the VR camera shooting unit through a data transmission unit and used for rendering an initial VR stereo image according to the initial panoramic image and sending the initial VR stereo image to a VR display terminal for display;
comparing the real-time panoramic image of the current time period with the real-time panoramic image of the previous time period, identifying a change area, and rendering a dynamic VR (virtual reality) stereo image of the change area;
identifying the relative position information of the change area in a VR stereo image displayed by a VR display terminal;
and sending the dynamic VR stereo image and the relative position information to a VR display terminal, and displaying the VR stereo image of the current time period at the VR display terminal, wherein the VR stereo image of the current time period is the combination of the VR stereo image of the previous time period and the dynamic VR stereo image of the current time period.
In some possible embodiments, the data processing unit is specifically configured to:
dividing the panoramic image of the monitored scene into a plurality of rendering units according to preset region division parameters, wherein the images of the same rendering unit in different time periods have the same or corresponding unit identifiers;
identifying one or more changed rendering units, and taking the changed one or more rendering units as a change area;
the relative position information is determined by the unit identifier.
In some possible embodiments, the data processing unit is further configured to:
comparing the number of the rendering units in the change area with a preset first threshold value;
if the variation area is larger than the first threshold, further dividing the variation area into a plurality of sub-units, wherein the plurality of sub-units comprise a set of sub-static units and sub-dynamic units;
and extracting at least one sub dynamic unit in the plurality of sub dynamic units, and taking the changed at least one sub dynamic unit as a change area.
In some possible embodiments, the data processing unit is specifically configured to:
establishing a coordinate system for the panoramic image of the shooting scene, wherein the images at the same position in different time periods have the same or corresponding coordinate values;
extracting edge coordinate information of the change area;
the relative position information is determined by the edge coordinates.
In some possible embodiments, the data processing unit is further configured to:
comparing the area of the change region with a preset second threshold value;
if the number of the sub-regions is larger than the second threshold value, the variable region is further divided into a plurality of sub-regions, and the sub-regions comprise a set of sub-static regions and sub-dynamic regions;
and extracting at least one sub dynamic region in the plurality of sub regions, and taking the changed at least one sub dynamic region as a change region.
In some possible embodiments, the data processing unit is further configured to:
and acquiring correction information, and adjusting the rendering parameters of the changed VR three-dimensional image according to the correction information to completely fuse the VR three-dimensional image in the previous time period and the dynamic VR three-dimensional image in the current time period displayed on the VR display terminal.
In some possible embodiments, the correction information is determined from the relative position information.
In some possible embodiments, the data processing unit is further configured to:
and configuring prompt information for the changed VR stereo image of the changed area and sending the prompt information to the VR display terminal so as to display the prompt information of the changed area on the VR display terminal.
In some possible embodiments, the data processing unit is further configured to:
and according to the video parameters of the panoramic image of the current time period, adjusting the environment parameters of the VR three-dimensional image of the previous time period displayed in the VR display terminal to synchronize the VR three-dimensional image with the environment of the current time period.
In some possible embodiments, the data processing unit is further configured to:
detecting a change in the audio data;
transmitting the audio data to a VR audio output port.
The invention has the beneficial effects that:
according to the embodiment of the invention, an initial VR stereo image is rendered according to an initial panoramic image shot by a VR camera unit, and only a changed area in a monitored scene is rendered on the basis of the initial VR stereo image, so that a real-time VR stereo image formed by combining the initial VR stereo image and the changed VR stereo image is obtained. In the monitoring process, only the images in the change area need to be rendered, so that the rendering workload is greatly reduced, and the data to be transmitted is greatly reduced, thereby the image rendering speed and the data transmission speed are obviously improved, and the real-time performance of security monitoring is effectively ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a VR stereo imaging system for security monitoring according to an embodiment of the present invention.
Fig. 2 is a schematic workflow diagram of a VR stereo imaging system for security monitoring according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described through embodiments with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present 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.
A first embodiment of a VR stereo imaging system for security monitoring according to the present invention is described in detail below with reference to the accompanying drawings; as shown in fig. 1, the present embodiment mainly includes:
the VR camera unit 10 is used for shooting panoramic images of monitored scenes, and the panoramic images comprise initial panoramic images and real-time panoramic images of all time periods;
the data processing unit 30 is connected with the VR camera unit 10 through a data transmission unit 20, and is used for rendering an initial VR stereo image according to the initial panoramic image and sending the initial VR stereo image to a VR display terminal 40 for display;
comparing the real-time panoramic image of the current time period with the real-time panoramic image of the previous time period, identifying a change area, and rendering a dynamic VR (virtual reality) stereo image of the change area;
identifying the relative position information of the change area in a VR stereo image displayed by a VR display terminal;
and sending the dynamic VR stereo image and the relative position information to a VR display terminal, and displaying the VR stereo image of the current time period at the VR display terminal, wherein the VR stereo image of the current time period is the combination of the VR stereo image of the previous time period and the dynamic VR stereo image of the current time period.
In some possible embodiments, the data processing unit 30 may be further configured to:
and acquiring correction information, and adjusting the rendering parameters of the changed VR three-dimensional image according to the correction information to completely fuse the VR three-dimensional image in the previous time period and the dynamic VR three-dimensional image in the current time period displayed on the VR display terminal.
In some possible embodiments, the correction information is determined from the relative position information.
In some possible embodiments, the data processing unit 30 may be further configured to:
and configuring prompt information for the changed VR stereo image of the changed area and sending the prompt information to the VR display terminal so as to display the prompt information of the changed area on the VR display terminal.
In some possible embodiments, the data processing unit 30 may be further configured to:
and according to the video parameters of the panoramic image of the current time period, adjusting the environment parameters of the VR three-dimensional image of the previous time period displayed in the VR display terminal 40 to synchronize the VR three-dimensional image with the environment of the current time period.
In some possible embodiments, the data processing unit 30 may be further configured to:
detecting a change in the audio data;
transmitting the audio data to a VR audio output port.
A second embodiment of a VR stereo imaging system for security monitoring provided by the present invention is described in detail below; the present embodiment provides, on the basis of the foregoing first embodiment, the following example of the data processing unit for identifying the relative position information of the change area in the VR stereoscopic image displayed by the VR display terminal:
in this embodiment, the data processing unit 30 may specifically be configured to:
dividing the panoramic image of the monitored scene into a plurality of rendering units according to preset region division parameters, wherein the images of the same rendering unit in different time periods have the same or corresponding unit identifiers;
identifying one or more changed rendering units, and taking the changed one or more rendering units as a change area;
the relative position information is determined by the unit identifier.
A third embodiment of a VR stereo imaging system for security monitoring according to the present invention is described in detail below; the present embodiment further provides, on the basis of the foregoing second embodiment, the following example of the data processing unit for identifying the relative position information of the change area in the VR stereoscopic image displayed by the VR display terminal:
in this embodiment, the data processing unit 30 may further be configured to:
comparing the number of the rendering units in the change area with a preset first threshold value;
if the variation area is larger than the first threshold, further dividing the variation area into a plurality of sub-units, wherein the plurality of sub-units comprise a set of sub-static units and sub-dynamic units;
and extracting at least one sub dynamic unit in the plurality of sub dynamic units, and taking the changed at least one sub dynamic unit as a change area.
The embodiment can achieve the effect of improving the image rendering speed and the data transmission speed by further removing the unchanged part in the changed area under the condition that the area of the changed area is larger.
A fourth embodiment of a VR stereo imaging system for security monitoring according to the present invention is described in detail below; the present embodiment provides, on the basis of the foregoing first embodiment, another example of the data processing unit for identifying the relative position information of the change area in the VR stereoscopic image displayed by the VR display terminal, which is different from the foregoing second embodiment, as follows:
in this embodiment, the data processing unit 30 may specifically be configured to:
establishing a coordinate system for the panoramic image of the shooting scene, wherein the images at the same position in different time periods have the same or corresponding coordinate values;
extracting edge coordinate information of the change area;
the relative position information is determined by the edge coordinates.
A fifth embodiment of a VR stereo imaging system for security monitoring according to the present invention is described in detail below; this embodiment further provides a specific example of identifying the relative position information of the change area in the VR stereoscopic image displayed by the VR display terminal on the basis of the foregoing fourth embodiment:
in this embodiment, the data processing unit 30 may further be configured to:
comparing the area of the change region with a preset second threshold value;
if the number of the sub-regions is larger than the second threshold value, the variable region is further divided into a plurality of sub-regions, and the sub-regions comprise a set of sub-static regions and sub-dynamic regions;
and extracting at least one sub dynamic region in the plurality of sub regions, and taking the changed at least one sub dynamic region as a change region.
The embodiment can achieve the effect of improving the image rendering speed and the data transmission speed by further removing the unchanged part in the changed area under the condition that the area of the changed area is larger.
In order to further explain the technical means and effects of the present embodiment to achieve the predetermined invention, the main operation principle and steps of the first embodiment are described in detail with reference to fig. 2 as follows:
in step S10, the VR imaging unit 10 captures a panoramic image of a monitored scene, including an initial panoramic image and real-time panoramic images for each time period;
in step S20, the data processing unit 30 renders an initial VR stereo image from the initial panoramic image, and transmits the initial VR stereo image to the VR display terminal 40;
in step S30, the VR display terminal 40 displays the initial VR stereoscopic image;
in step S21, the data processing unit 30 compares the real-time panoramic image of the current time period with the real-time panoramic image of the previous time period, identifies a change area, and renders a dynamic VR stereo image of the change area;
in step S22, the data processing unit 30 identifies the relative position information of the change region in the VR stereoscopic image displayed by the VR display terminal;
in step S23, the data processing unit 30 transmits the dynamic VR stereoscopic image and the relative position information to the VR display terminal 40;
in step S31, the VR display terminal displays a VR stereoscopic image of a current time period, which is a combination of a VR stereoscopic image of a previous time period and a dynamic VR stereoscopic image of the current time period.
It should be noted that the above-mentioned "first" and "second" have no special meaning, and are only used for distinguishing different modules.
It will be understood by those skilled in the art that the processes performed to implement all or part of the functions in the above embodiments may be implemented by hardware related to instructions of a computer program, which may be stored in a computer-readable storage medium, and when executed, may implement the functions including those described in the above embodiments. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (3)
1. A VR stereo imaging system for security monitoring, comprising:
the VR camera unit is used for shooting panoramic images of monitored scenes, and the panoramic images comprise initial panoramic images and real-time panoramic images of all time periods;
the data processing unit is connected with the VR camera shooting unit through a data transmission unit and used for rendering an initial VR stereo image according to the initial panoramic image and sending the initial VR stereo image to a VR display terminal for display;
comparing the real-time panoramic image of the current time period with the real-time panoramic image of the previous time period, identifying a change area, and rendering a dynamic VR (virtual reality) stereo image of the change area;
identifying the relative position information of the change area in a VR stereo image displayed by a VR display terminal;
transmitting the dynamic VR stereo image and the relative position information to a VR display terminal, and displaying the VR stereo image of the current time period on the VR display terminal, wherein the VR stereo image of the current time period is the combination of the VR stereo image of the previous time period and the dynamic VR stereo image of the current time period;
wherein the data processing unit is specifically configured to: dividing the panoramic image of the monitored scene into a plurality of rendering units according to preset region division parameters, wherein the images of the same rendering unit in different time periods have the same or corresponding unit identifiers; identifying one or more changed rendering units, and taking the changed one or more rendering units as a change area; the relative position information is determined by the unit identifier; comparing the number of the rendering units in the change area with a preset first threshold value; if the variation area is larger than the first threshold, further dividing the variation area into a plurality of sub-units, wherein the plurality of sub-units comprise a set of sub-static units and sub-dynamic units; extracting at least one sub dynamic unit in the plurality of sub units, and taking the changed at least one sub dynamic unit as a change area; or comparing the area of the change region with a preset second threshold value; if the number of the sub-regions is larger than the second threshold value, the variable region is further divided into a plurality of sub-regions, and the sub-regions comprise a set of sub-static regions and sub-dynamic regions; extracting at least one sub-dynamic region in the plurality of sub-regions, and taking the changed at least one sub-dynamic region as a changed region;
the data processing unit is further configured to: acquiring correction information, and adjusting rendering parameters of the dynamic VR three-dimensional image in the change area according to the correction information to enable the VR three-dimensional image in the previous time period displayed on the VR display terminal to be completely fused with the dynamic VR three-dimensional image in the current time period; the correction information is determined according to the relative position information;
the data processing unit is further configured to: configuring prompt information for the changed VR stereo image of the changed area and sending the prompt information to the VR display terminal so as to display the prompt information of the changed area on the VR display terminal;
the data processing unit is further configured to: and according to the video parameters of the panoramic image of the current time period, adjusting the environment parameters of the VR three-dimensional image of the previous time period displayed in the VR display terminal to synchronize the VR three-dimensional image with the environment of the current time period.
2. The system of claim 1, wherein the data processing unit is specifically configured to:
establishing a coordinate system for the panoramic image of the monitored scene, wherein the images at the same position in different time periods have the same or corresponding coordinate values;
extracting edge coordinate information of the change area;
the relative position information is determined by the edge coordinates.
3. The system of any of claims 1-2, wherein the data processing unit is further to:
detecting a change in the audio data;
transmitting the audio data to a VR audio output port.
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| CN106358035A (en) * | 2016-11-09 | 2017-01-25 | 北京七维视觉科技有限公司 | Image processing method and image processing apparatus |
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