CN112702551A - Lightning field video recording method, device, equipment and medium - Google Patents
Lightning field video recording method, device, equipment and medium Download PDFInfo
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Abstract
The invention discloses a method, a device, equipment and a medium for recording a lightning field video, wherein the method comprises the following steps: acquiring audio information captured from a current scene; if the audio information and the environmental information of the current scene meet the lightning field video recording condition, determining the current scene as a lightning occurrence scene; and controlling an image acquisition device to record video in the lightning occurrence scene. According to the technical scheme, whether the current scene meets the lightning field video recording condition or not is determined through the audio information and the environmental information of the current scene, if the current scene meets the lightning field video recording condition, the current scene is determined to be a lightning occurrence scene, and the image acquisition device is controlled to record videos in the lightning occurrence scene.
Description
Technical Field
The embodiment of the invention relates to a meteorological lightning technology, in particular to a lightning field video recording method, device, equipment and medium.
Background
Lightning is a common natural phenomenon that encompasses multiple forms, such as: inter-cloud flashing, cloud-to-ground flashing, and the like. Lightning occurs with a large discharge and energy release. If the prevention treatment is not proper, a disaster is caused. Therefore, the location and early warning of lightning will become especially important.
In the prior art, ultra-low frequency electromagnetic waves generated when lightning occurs can be used for detection and positioning, and then a camera is erected to record an observation area in real time to obtain image data, and the image data is uploaded to a server. However, the existing detection system is complex in installation, strong in specialization and high in cost. Moreover, the camera continuously records and uploads the image data, which occupies more bandwidth resources and server resources, resulting in resource waste.
Disclosure of Invention
The invention provides a method, a device, equipment and a medium for recording a lightning field video, which are used for recording the lightning field video when lightning occurs and reducing the waste of bandwidth resources and storage resources caused by continuous recording of a lightning scene in the prior art.
In a first aspect, an embodiment of the present invention provides a lightning field video recording method, including:
acquiring audio information captured from a current scene;
if the audio information and the environmental information of the current scene meet the lightning field video recording condition, determining the current scene as a lightning occurrence scene;
and controlling an image acquisition device to record video in the lightning occurrence scene.
In a second aspect, an embodiment of the present invention further provides a lightning field video recording apparatus, including:
the acquisition module is used for acquiring audio information captured from a current scene;
the determining module is used for determining the current scene as a lightning occurrence scene if the audio information and the environmental information of the current scene meet the lightning field video recording condition;
and the recording module is used for controlling the image acquisition device to record videos in the lightning occurrence scene.
In a third aspect, an embodiment of the present invention further provides a lightning field video recording device, where the lightning field video recording device includes:
one or more processors;
storage means for storing one or more programs;
the image acquisition device is used for acquiring at least one of a current picture and a current video of a current scene;
the sensor is used for acquiring environmental information of a current scene;
when executed by the one or more processors, cause the one or more processors to implement the lightning field video recording method according to the first aspect.
In a fourth aspect, embodiments of the present invention also provide a storage medium containing computer-executable instructions for performing the lightning field video recording method according to the first aspect when executed by a computer processor.
The invention acquires the audio information captured from the current scene; if the audio information and the environmental information of the current scene meet the lightning field video recording condition, determining the current scene as a lightning occurrence scene; and controlling an image acquisition device to record video in the lightning occurrence scene. According to the technical scheme, the current scene is determined as the lightning scene according to the condition that the audio information captured from the current scene and the environmental information of the current scene meet the lightning field video recording condition, and then the image acquisition device is controlled to record video in the lightning scene, otherwise, whether the current scene meets the lightning field video recording condition is judged continuously according to the audio information captured from the current scene and the environmental information of the current scene. The method and the device realize the video recording of the lightning field when lightning occurs, and reduce the waste of bandwidth resources and storage resources caused by the continuous recording of the lightning scene in the prior art.
Drawings
Fig. 1 is a schematic view of a current environment involved in a lightning field video recording method according to an embodiment of the present application;
fig. 2 is a flowchart of a lightning field video recording method according to an embodiment of the present invention;
fig. 3 is a flowchart of a lightning field video recording method according to a second embodiment of the present invention;
fig. 4 is a flowchart illustrating a step 350 of a lightning field video recording method according to a second embodiment of the present invention;
fig. 5 is a flowchart illustrating an implementation of a lightning field video recording method according to a second embodiment of the present invention;
fig. 6 is an implementation flowchart of step 640 in an implementation flowchart of a lightning field video recording method according to a second embodiment of the present invention;
fig. 7 is a structural diagram of a lightning field video recording apparatus according to a third embodiment of the present invention;
fig. 8 is a schematic structural diagram of a lightning field video recording device according to a fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently or simultaneously. In addition, the order of the operations may be re-arranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like. In addition, the embodiments and features of the embodiments in the present invention may be combined with each other without conflict.
The lightning field video recording method provided by the embodiment of the application can be applied to a lightning field video recording system, and the lightning field video recording system can comprise: audio frequency acquisition device, at least one image acquisition device, sensor and controller etc. wherein, at least one image acquisition device can fixed mounting on the support, can also the multi-angle set orientation different direction, realizes that full angle detects and shoots the scene of dodging the electric field.
Fig. 1 is a schematic diagram of a current environment related to a lightning field video recording method according to an embodiment of the present invention, as shown in fig. 1, the current environment may include at least one lightning field video recording system 110 and a server 120 communicatively connected to the lightning field video recording system, where the lightning field video recording system 110 may be disposed in an open environment.
Specifically, as described above, the lightning field video recording system 110 may include: an audio acquisition device 1110, at least one image acquisition device 1120, a sensor 1130, and a controller 1140. The lightning field video recording system 110 may be arranged in a target area where lightning field video is to be recorded. The server 120 may include one server or a server cluster including a plurality of servers.
The peripheral block diagram of the lightning flash field video recording system 110 in the figure does not represent an actual framework, only the laying addresses of the lightning flash field video recording system 110 and the server 120 are used as a distinction.
In addition, at least one lightning field video recording system 110 may be communicatively connected to each other, and each lightning field video recording system 110 may include a sensor 1130, or any lightning field video recording system 110 in the current implementation environment may include a sensor 1130, and transmit the sensing data to the other lightning field video recording systems 110, respectively. The sensor 1130 may include a temperature and humidity sensor and a brightness sensor.
Example one
Fig. 2 is a flowchart of a lightning field video recording method according to an embodiment of the present invention, where the embodiment is applicable to a situation where lightning occurs in a current scene and a video recording needs to be performed on a lightning field, and the method may be performed by a lightning field video recording system, and specifically includes the following steps:
Specifically, the controller may control the audio obtaining apparatus to obtain the audio information of the current environment in real time, wherein the audio obtaining apparatus may include a microphone. The sound pickup can be used for collecting the audio information of the field environment and then transmitting the audio information to the controller, and the sound pickup can comprise a microphone and an audio amplifying circuit.
In addition, since the current environment may include at least one environmental noise, the audio information acquired by the sound pickup may be processed based on a preset processing period, and the processing period may be determined according to actual conditions, for example, the processing period may include 0.5 seconds.
It is noted that the audio information processing procedure may include the steps of: performing time domain filtering on the audio information, removing stable environment white noise in the audio information, and reserving clearer audio information; carrying out Fourier transform on the audio information, and converting the audio information into a frequency domain to obtain corresponding frequency spectrum information; and performing frequency domain low-pass filtering on the frequency spectrum information, and filtering useless information in the frequency spectrum information to obtain effective frequency spectrum information.
In this embodiment, the audio information may be used to determine whether the current scene corresponds to a thunder scene, so as to further determine whether the current scene corresponds to a lightning scene, perform a subsequent video recording operation if the current scene corresponds to the lightning scene, and otherwise, continue to determine the audio information acquired by the current scene. The waste of bandwidth resources and storage resources caused by continuous recording and uploading of audio information or image information is reduced.
And step 220, if the audio information and the environmental information of the current scene meet the lightning field video recording condition, determining the current scene as a lightning occurrence scene.
The environmental information of the current scene may include temperature and humidity information, brightness information, and the like, specific information included in the environmental information of the current scene is not limited, and the environmental information of the current scene may be matched with the audio information to determine whether the current scene is a lightning occurrence scene.
Specifically, if the environmental information of the current scene includes temperature and humidity information and luminance information, the temperature and humidity sensor and the luminance sensor respectively acquire the temperature and humidity information and the luminance information of the current scene. The controller judges whether audio information, temperature and humidity information and brightness information meet the lightning field video recording condition, if yes, the current scene is determined to be a lightning occurrence scene, and if not, the current scene is determined to be an interference scene or a normal scene.
It should be noted that, in order to reduce the influence on the judgment efficiency caused by excessive data due to the simultaneous calling of the audio information and the environmental information of the current scene, it may be determined that the current scene meets the lightning occurrence condition according to the audio information; and then, a temperature and humidity sensor and a brightness sensor are called to obtain temperature and humidity information and brightness information, the current scene is determined to meet the lightning occurrence scene according to the temperature and humidity information and the brightness information, the current scene is further determined to meet the lightning field video recording condition, and the current scene is determined to be the lightning occurrence scene. The judgment of the current scene is accelerated, the acquisition and the processing of data are reduced, and the waste of bandwidth resources and storage resources is reduced.
In the embodiment, the current scene can be determined to be the lightning occurrence scene according to the audio information and the environmental information of the current scene, so that the error in judging the current scene is reduced, and the judgment of the current scene is more accurate. And only when the current scene is determined to be a lightning occurrence scene, triggering the image acquisition device to start a video recording mode for video recording, otherwise, keeping the image acquisition device in the image acquisition mode for image acquisition, so as to reduce the waste of bandwidth resources and storage resources.
And step 230, controlling the image acquisition device to record video in the lightning occurrence scene.
Specifically, after determining that the current scene is a lightning occurrence scene, the controller may trigger the image acquisition device to close the image acquisition mode and open the video acquisition mode, and start video recording on the lightning occurrence scene.
The image acquisition device may include a picture acquisition mode and a video acquisition mode, which are respectively used for acquiring picture information and video information and taking pictures or recording videos of a current scene. The image acquisition device can comprise cameras, and in the embodiment, at least one camera can be arranged in multiple directions of the support to shoot and record the surrounding environment of the support.
The camera may comprise a high sensitivity wide dynamic camera. The high-light-sensitivity wide-dynamic camera can enable the camera to see the characteristics of images under very strong contrast. In some situations with too large contrast, the general camera is limited by the photosensitive characteristic of a Charge Coupled Device (CCD), and the captured image may have too bright background or too dark foreground. The high-light-sensitive wide dynamic camera can better solve the problem.
It should be noted that at least one image capturing device may simultaneously turn on the video capturing mode. Certainly, in practical applications, in order to reduce the loss of hardware, the image information of multiple lightning occurrence scenes acquired by multiple image acquisition devices may be analyzed to determine the direction of the lightning occurrence, and then the video acquisition mode of the image acquisition device in the corresponding direction is started.
It should be further noted that, when the image acquisition device starts a video recording mode to perform video recording on a lightning occurrence scene, the audio acquisition device is controlled to stop acquiring the audio information, and after the video recording is finished, the audio acquisition device can be synchronously started to acquire the audio information again.
In this embodiment, the image acquisition device records a video in a lightning occurrence scene, and only acquires a picture in other scenes. The data volume of the picture information is far smaller than that of the video information, and the bandwidth pressure and the storage pressure of the lightning field video recording system are reduced.
According to the technical scheme of the embodiment, the audio information captured from the current scene is acquired; if the audio information and the environmental information of the current scene meet the lightning field video recording condition, determining the current scene as a lightning occurrence scene; and controlling an image acquisition device to record video in the lightning occurrence scene. In this embodiment, it is first determined that the audio information and the environmental information of the current scene conform to the condition for recording the lightning field video, and it is further determined that the current scene is a lightning occurrence scene. And only when the current scene is a lightning scene, video recording is carried out to obtain the video of the lightning field, so that continuous recording and continuous uploading of the lightning field scene in the prior art are avoided, and the waste of bandwidth resources and storage resources is further reduced.
Example two
Fig. 3 is a flowchart of a lightning field video recording method according to a second embodiment of the present invention, which is embodied on the basis of the second embodiment. In this embodiment, the method may further include:
The step of specifically acquiring the audio information captured in the current scene is already described in detail in the first embodiment, and is not described herein again.
And step 320, if the audio information and the environmental information of the current scene meet the lightning field video recording condition, determining the current scene as a lightning occurrence scene.
In one embodiment, the environment information of the current scene includes current temperature and humidity information and current brightness information;
accordingly, step 320 may include:
and if the frequency spectrum of the audio information is matched with a preset thunder frequency spectrum, the current temperature and humidity information meets a temperature and humidity condition, and the current brightness information meets a brightness condition, determining that the environmental information of the current scene meets a lightning occurrence condition.
Specifically, fourier transform may be performed on the acquired audio information to obtain a frequency spectrum of the audio information, that is, frequency spectrum information, the frequency spectrum information is compared with a preset thunder spectrum in a database, if the frequency spectrum information matches the preset thunder spectrum, the acquired audio information is determined to be thunder, and otherwise, the acquired audio information is determined to be interference information.
After the obtained audio information is determined to be thunder, analyzing the current temperature and humidity information and the current brightness information, comparing the current temperature and humidity information with a preset lightning temperature and humidity range, comparing the current brightness information with a preset lightning brightness range, and if the current temperature and humidity information is in the preset lightning temperature and humidity range and the current brightness information is in the preset lightning brightness range, determining that the environmental information of the current scene meets the lightning occurrence condition.
It should be noted that the preset lightning temperature and humidity range and the preset lightning brightness range may be adjusted according to the current geographical location and the current season where the lightning field video recording system is located. For example, when the lightning field video recording system is located in the south of a wet and rainy day, the preset lightning temperature and humidity range can be increased based on the current geographic location; when the lightning field video recording system is located in a dry and rainy place, the preset lightning temperature and humidity range can be reduced based on the current geographic position. In addition, when the lightning field video recording system is in plum rainy season, the preset lightning temperature and humidity range can be increased based on the current season. The preset lightning brightness range can also be adjusted for day or night according to the current environment.
And determining the current scene as a lightning occurrence scene.
Specifically, if the environmental information of the current scene meets the lightning occurrence condition, the current scene may be determined as the lightning occurrence scene.
Specifically, if the frequency spectrum of the audio information is not matched with the preset thunder frequency spectrum, and the audio information is determined not to include thunder, the current scene can be determined as an interference scene; if the frequency spectrum of the audio information is matched with a preset thunder frequency spectrum, the audio information is determined to comprise thunder, the current scene is determined not to meet the lightning occurrence condition according to the environmental information of the current scene, and the current scene is further determined not to meet the lightning field video recording condition, so that the current scene can be determined as an interference scene. The process may then return to step 210 to continue the process of obtaining audio information captured from the current scene.
In addition, if at least one of the humidity temperature information and the brightness information does not satisfy the lightning occurrence condition, it may be determined that the environmental information of the current scene does not satisfy the lightning occurrence condition.
And step 340, controlling the image acquisition device to acquire the image in the current scene.
Specifically, in the running process of the lightning field video recording system, when no lightning occurs, the image acquisition device can continuously acquire the current scene to obtain the current picture.
Specifically, since the image pickup apparatus of the present embodiment operates in a full-time operation, it requires 24 hours of uninterrupted operation. The illumination intensity at different moments and in different weather conditions is different, and particularly, the light is weak at night, so that the imaging difference is large. Therefore, the relevant parameters need to be adaptively adjusted according to the ambient light intensity to obtain a picture with the best imaging effect. The parameter information of the image acquisition device can be adjusted for multiple times according to the current picture until the image acquisition device is adjusted to acquire the picture meeting the preset imaging effect.
The preset imaging effect can comprise an optimal imaging effect, and the optimal imaging effect can be selected and determined for multiple imaging pictures.
The parameter information of the image pickup device may include exposure time, exposure gain, contrast, and the like.
In this embodiment, the first picture information acquired within the first preset time period may be used to adjust a parameter of the image acquisition apparatus for the first time, so as to obtain a first parameter; the image acquisition device applying the first parameters can acquire second picture information within a second preset time period, the second picture information can be used for adjusting parameters of the image acquisition device for the second time to obtain second parameters until a picture with the best imaging effect is acquired, and the current parameters are determined to be parameters of the image acquisition device.
Fig. 4 is a flowchart of step 350 in a lightning field video recording method according to a second embodiment of the present invention, as shown in fig. 4, in an implementation manner, step 350 may specifically include:
Specifically, at a continuous preset time, a current picture of a current scene is captured based on a picture acquisition mode of the image acquisition device, and picture information of the image acquisition device at different ambient light intensities in a day can be captured.
In this embodiment, the image capturing device may continuously capture a current picture of a current scene.
Specifically, if the current scene is at night or in the daytime with a bright light image, parameters of the image acquisition device need to be adjusted to acquire a picture with a good imaging effect. The brightness sensor can be controlled to acquire the current lumen value of the current scene at the current moment.
The lumen value may include, for example, luminous flux, specifically, radiation power that can be sensed by the human eye, which is equal to the product of the radiation energy of a certain wavelength band per unit time and the relative visibility of the wavelength band. Because the relative visual rate of human eyes to different wavelengths of light is different, the luminous fluxes of different wavelengths of light are not equal when the radiation power of different wavelengths of light is equal.
After the lumen values at all times in the preset time period are obtained, the lumen values are divided into regions according to the range of the lumen values to form at least one interval. And selecting picture information with the best imaging effect in each interval as a sample picture of the current interval.
In this embodiment, the lumen value may be used to adjust parameter information of the image acquisition device.
In one embodiment, step 3530 may specifically include:
based on the current lumen value, a sample picture is obtained from a database for comparison with the current lumen value.
In particular, the database may be searched for a sample picture corresponding to the current lumen value.
And carrying out gridding division on the current picture and the sample picture.
Wherein the gridding size may include 16 x 9, each grid may include a plurality of pixels.
In this embodiment, when the image obtaining apparatus runs, the last picture of the preset time period may be obtained within the preset time period, for example, the preset time period may include five minutes, and the last picture of the fifth minute may be obtained every five minutes as the current picture.
And respectively comparing the brightness mean value of each grid of the current picture and the sample picture to obtain a comparison result.
Specifically, two matrices with the same size as the grids of the current picture and the sample picture may be initialized to obtain a comparison matrix C and a weight matrix W, where the size of the two matrix grids may also include 16 × 9. Because the image acquisition device can be fixed on the bracket, the grid content corresponding to the acquired picture information can be kept consistent, and therefore the grids of the current picture and the sample picture can be compared.
If the brightness mean value of the grid of the current picture is greater than the brightness mean value of the grid of the sample picture, the value of the grid corresponding to the comparison matrix C can be recorded as 1; otherwise, the value of the grid corresponding to the comparison matrix C may be noted as-1. Meanwhile, the ratio of the difference value between the luminance mean values of the grids of the current picture and the sample picture to the luminance mean value of the grid of the sample picture may be recorded as the value of the grid corresponding to the weight matrix W. And recording the sum of the products of corresponding elements of the comparison matrix C and the weight matrix W as a comparison result.
And adjusting the exposure time and the exposure gain of the image acquisition device according to each comparison result.
Specifically, if the comparison result is a positive number, the exposure time of the image acquisition device may be reduced based on the comparison result until a picture satisfying the preset imaging effect is acquired, if a picture satisfying the preset imaging effect has not been acquired, the exposure gain may continue to be reduced based on the comparison result until a picture satisfying the preset imaging effect is acquired, and the exposure time and the degree of change in the exposure gain may be determined according to the numerical value of the comparison result; if the comparison result is negative, the exposure time of the image acquisition device can be increased based on the comparison result until the picture meeting the preset imaging effect is acquired, if the picture meeting the preset imaging effect is not acquired, the exposure gain can be continuously increased based on the comparison result until the picture meeting the preset imaging effect is acquired, and the exposure time and the variation degree of the exposure gain can be determined according to the numerical value of the comparison result.
And if the distribution interval length of each piece of brightness information is greater than the preset interval length, adjusting the contrast of the image acquisition device.
Specifically, the above steps may adjust the exposure of the image capturing device as a whole, but in practical applications, the image capturing device may have a local overexposure. Therefore, the brightness information of the current picture can be counted, if the length of the brightness information distribution interval of the current picture is greater than the preset interval length, the image acquisition device may have a situation of local overexposure, and at this time, the contrast of the image acquisition device can be reduced, and the adjustment of the parameters of the image acquisition device is realized.
Specifically, if the parameter information of the image capturing device is adjusted through the above steps, and if a picture satisfying the preset imaging effect is still not obtained, the capturing operation of the current picture may be continuously performed.
It should be noted that steps 340 and 350 may be performed at any time before step 360, so as to ensure that the adjustment of the parameter information of the image capturing apparatus is completed before the image capturing apparatus performs video recording.
And 360, controlling the image acquisition device to record video in the lightning occurrence scene.
The specific steps and modes for recording the video are already described in detail in the first embodiment, and are not described herein again.
And step 370, after a second preset time period, controlling the image acquisition device to stop video recording to obtain the lightning field video.
Specifically, the duration of the recorded lightning field video may be determined according to a second preset time period, which may be determined according to actual requirements, for example, the second preset time period may include 15 minutes. And after the image acquisition device starts to record the video for 15 minutes, stopping recording the video to obtain the lightning field video with the duration of 15 minutes.
It will be appreciated that after the recording of the results, the acquisition of audio information captured from the current scene may continue.
And 380, uploading the lightning field video to a server.
Specifically, in the execution process of the above steps, after it is monitored that the image acquisition device acquires the picture information or the lightning field video, the controller may upload the picture information or the lightning field video to the server for storage. The server can also send the picture information or the lightning field video to the display terminal, and the display terminal can display the picture information or the lightning field video according to the time sequence.
According to the technical scheme of the embodiment, the audio information captured from the current scene is acquired; if the audio information and the environmental information of the current scene meet the lightning field video recording condition, determining the current scene as a lightning occurrence scene; if at least one of the audio information and the environmental information of the current scene does not meet the video recording condition of the flash field, determining the current scene as an interference scene, and continuing to acquire the audio information captured from the current scene; controlling an image acquisition device to record video in the lightning occurrence scene; after a second preset time period, controlling the image acquisition device to stop video recording to obtain a lightning field video; and uploading the lightning field video to a server. In this embodiment, it is first determined that the audio information and the environmental information of the current scene conform to the condition for recording the lightning field video, and it is further determined that the current scene is a lightning occurrence scene. And only when the current scene is a lightning scene, video recording is carried out to obtain the video of the lightning field, so that continuous recording and continuous uploading of the lightning field scene in the prior art are avoided, and the waste of bandwidth resources and storage resources is further reduced.
In addition, the embodiment also controls the image acquisition device to acquire images in the current scene; and adjusting the parameter information of the image acquisition device according to the current picture acquired by the image acquisition device in the current scene until the image acquisition device acquires the picture meeting the preset imaging effect. In this embodiment, the adjustment of the parameter information of the image acquisition device can ensure that the picture information and the lightning field video with better imaging effect can be acquired.
Fig. 5 is a flowchart of an implementation of a lightning field video recording method according to a second embodiment of the present invention, and an implementation of the method is exemplarily shown. As shown in fig. 5, includes:
and step 510, controlling the image acquisition device to acquire the image in the current scene.
Specifically, in the running process of the lightning field video recording system, the image acquisition device can be continuously in a picture acquisition mode to acquire a picture of the current scene to obtain the current picture. If the current scene is a lightning occurrence scene, the image acquisition device can record the video of the current scene.
And step 520, adjusting the parameter information of the image acquisition device according to the current picture acquired by the image acquisition device in the current scene until the image acquisition device acquires the picture meeting the preset imaging effect.
Specifically, in order to acquire a picture with the best imaging effect, parameter information of the image acquisition device may be adjusted.
Specifically, the operation mode of the image capturing device may include a shooting mode, a recording mode, and an intelligent mode, and the intelligent mode may include a picture capturing mode and a video recording mode.
And 540, if the frequency spectrum of the audio information is matched with a preset thunder frequency spectrum, determining the audio information as thunder, otherwise, continuing to acquire the picture of the current scene by the image acquisition device.
Specifically, fig. 6 is an implementation flowchart of step 540 in an implementation flowchart of a lightning field video recording method according to a second embodiment of the present invention, as shown in fig. 6, step 540 may specifically include the following steps:
Step 5430, convert the audio information to spectral information based on fourier transform.
Specifically, because thunder is mainly distributed in 0-2000 Hz, frequency spectrum information beyond 0-2000 Hz can be filtered out, and judgment of the frequency spectrum information is facilitated.
Specifically, the environment information of the current scene may include temperature and humidity information and brightness information.
And step 560, controlling the image acquisition device to record video in the lightning occurrence scene.
And step 570, after a second preset time period, controlling the image acquisition device to stop video recording to obtain the lightning field video.
And 580, uploading the lightning scene video to a server.
According to the technical scheme of the embodiment, the image acquisition device is controlled to acquire the image in the current scene, and the parameter information of the image acquisition device is adjusted according to the current picture acquired by the image acquisition device in the current scene until the image acquisition device acquires the picture meeting the preset imaging effect.
In addition, according to the technical scheme of the embodiment, after the working mode of the image acquisition device is determined to comprise the intelligent mode, the audio information captured from the current scene can be acquired; if the frequency spectrum of the audio information is matched with a preset thunder frequency spectrum, determining the audio information as thunder, otherwise, continuously acquiring the picture of the current scene by the image acquisition device; if the environmental information of the current scene meets the lightning occurrence condition, determining the current scene as a lightning occurrence scene, otherwise, determining the current scene as an interference scene, and continuing to execute the step 510; controlling an image acquisition device to record video in a lightning occurrence scene; after a second preset time period, controlling the image acquisition device to stop video recording to obtain a lightning field video; and uploading the lightning field video to a server. In this embodiment, it is first determined that the audio information and the environmental information of the current scene conform to the condition for recording the lightning field video, and it is further determined that the current scene is a lightning occurrence scene. And only when the current scene is a lightning scene, video recording is carried out to obtain the video of the lightning field, so that continuous recording and continuous uploading of the lightning field scene in the prior art are avoided, and the waste of bandwidth resources and storage resources is further reduced.
EXAMPLE III
Fig. 7 is a structural diagram of a lightning field video recording apparatus according to a third embodiment of the present invention, where the apparatus may be suitable for video recording of a lightning field, so as to reduce waste of bandwidth resources and storage resources caused by continuous recording of a lightning scene in the prior art. The apparatus may be implemented in software and/or hardware and is typically integrated in a lightning field video recording device.
As shown in fig. 7, the apparatus includes:
an obtaining module 710, configured to obtain audio information captured from a current scene;
a determining module 720, configured to determine the current scene as a lightning occurrence scene if the audio information and the environmental information of the current scene satisfy a lightning field video recording condition;
and a recording module 730, configured to control the image acquisition apparatus to perform video recording in the lightning occurrence scene.
The lightning field video recording device provided by the embodiment acquires audio information captured from a current scene; if the audio information and the environmental information of the current scene meet the lightning field video recording condition, determining the current scene as a lightning occurrence scene; and controlling an image acquisition device to record video in the lightning occurrence scene. Determining the current scene as a lightning occurrence scene according to the condition that audio information captured from the current scene and environmental information of the current scene meet the lightning field video recording condition, and further controlling the image acquisition device to record video in the lightning occurrence scene, wherein the current scene is the lightning occurrence scene, and the current scene is recorded, otherwise, continuously judging whether the current scene meets the lightning field video recording condition according to the audio information captured from the current scene and the environmental information of the current scene. The method and the device realize the video recording of the lightning field when lightning occurs, and reduce the waste of bandwidth resources and storage resources caused by the continuous recording of the lightning scene in the prior art.
On the basis of the foregoing embodiment, the environment information of the current scene includes current temperature and humidity information and current luminance information, and the determining module 720 is specifically configured to:
if the frequency spectrum of the audio information is matched with a preset thunder frequency spectrum, the current temperature and humidity information meets a temperature and humidity condition, and the current brightness information meets a brightness condition, determining that the environmental information of the current scene meets a lightning occurrence condition;
and determining the current scene as a lightning occurrence scene.
On the basis of the above embodiment, the apparatus further includes:
on the basis of the above embodiment, the apparatus further includes:
and the adjusting module is used for adjusting the parameter information of the image acquisition device according to the current picture acquired by the image acquisition device in the current scene until the image acquisition device acquires the picture meeting the preset imaging effect.
In one embodiment, the adjusting module may specifically be configured to:
acquiring the current picture captured by the image acquisition device from the current scene at the current moment;
if the current picture does not meet the preset imaging effect, acquiring a current lumen value acquired by a brightness sensor from the current scene at the current moment;
extracting brightness information of color blocks included in the current picture, and adjusting parameter information of the image acquisition device according to the current lumen value and each brightness information;
and taking the next moment as a new current moment, and returning to execute the capturing operation of the current picture.
On the basis of the above embodiment, adjusting the parameter information of the image acquisition device according to the current lumen value and each of the luminance information includes:
obtaining a sample picture for comparison with the current lumen value from a database based on the current lumen value;
gridding and dividing the current picture and the sample picture;
respectively comparing the brightness mean value of each grid of the current picture and the sample picture to obtain a comparison result;
adjusting the exposure time and the exposure gain of the image acquisition device according to each comparison result;
and if the distribution interval length of each piece of brightness information is greater than the preset interval length, adjusting the contrast of the image acquisition device.
On the basis of the above embodiment, adjusting the exposure time and the exposure gain of the image capturing apparatus according to each comparison result includes:
initializing two matrixes with the same size as grids of the current picture and the sample picture to obtain a comparison matrix and a weight matrix;
according to each comparison result, determining a first numerical value of a grid corresponding to the comparison matrix and a second numerical value of a grid corresponding to the weight matrix;
and adjusting the exposure time and the exposure gain of the image acquisition device according to the first numerical value and the second numerical value.
The lightning field video recording device provided by the embodiment of the invention can execute the lightning field video recording method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.
Example four
Fig. 8 is a schematic structural diagram of a lightning field video recording device according to a fourth embodiment of the present invention, as shown in fig. 8, the lightning field video recording device includes a processor 810, a memory 820, an image acquisition apparatus 830 and a sensing apparatus 840; the number of processors 810 in the flash field video recording device may be one or more, and one processor 810 is taken as an example in fig. 8; the processor 810, the memory 820, the image capturing device 830 and the sensing device 840 in the flash field video recording apparatus may be connected by a bus or other means, and the connection by the bus is exemplified in fig. 8.
The memory 820 may be used as a computer-readable storage medium for storing software programs, computer-executable programs, and modules, such as the modules corresponding to the lightning field video recording method in the embodiment of the present invention (for example, the acquisition module 710, the determination module 720, and the recording module 730 in the lightning field video recording apparatus). The processor 810 executes various functional applications and data processing of the device/terminal/server by executing software programs, instructions and modules stored in the memory 820, that is, the flash field video recording method described above is implemented.
The memory 820 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 820 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory 820 may further include memory located remotely from the processor 810, which may be connected to a device/terminal/server through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The system comprises an image acquisition device 830 for acquiring at least one of a current picture and a current video of a current scene, and a sensing device 840 for acquiring environmental information of the current scene.
The lightning field video recording device provided by the embodiment of the invention can execute the lightning field video recording method provided by the embodiment, and has corresponding functions and beneficial effects.
EXAMPLE five
An embodiment of the present invention further provides a storage medium containing computer-executable instructions, which when executed by a computer processor, perform a method for video recording of a lightning field, the method comprising:
acquiring audio information captured from a current scene;
if the audio information and the environmental information of the current scene meet the lightning field video recording condition, determining the current scene as a lightning occurrence scene;
and controlling an image acquisition device to record video in the lightning occurrence scene.
Of course, the storage medium provided by the embodiment of the present invention contains computer-executable instructions, and the computer-executable instructions are not limited to the operations of the method described above, and may also perform related operations in the lightning field video recording method provided by any embodiment of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It should be noted that, in the embodiment of the above-mentioned flash field video recording device, the included units and modules are only divided according to functional logic, but not limited to the above-mentioned division, as long as the corresponding functions can be realized; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
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 (10)
1. A lightning field video recording method, comprising:
acquiring audio information captured from a current scene;
if the audio information and the environmental information of the current scene meet the lightning field video recording condition, determining the current scene as a lightning occurrence scene;
and controlling an image acquisition device to record video in the lightning occurrence scene.
2. The lightning field video recording method according to claim 1, characterized in that the environmental information of the current scene includes current temperature and humidity information and current brightness information;
correspondingly, if the audio information and the environmental information of the current scene meet the lightning field video recording condition, determining the current scene as a lightning occurrence scene, including:
if the frequency spectrum of the audio information is matched with a preset thunder frequency spectrum, the current temperature and humidity information meets a temperature and humidity condition, and the current brightness information meets a brightness condition, determining that the environmental information of the current scene meets a lightning occurrence condition;
and determining the current scene as a lightning occurrence scene.
3. The lightning field video recording method according to claim 1, after controlling the image acquisition device to perform image acquisition in the current scene, comprising:
and adjusting the parameter information of the image acquisition device according to the current picture acquired by the image acquisition device in the current scene until the image acquisition device acquires the picture meeting the preset imaging effect.
4. The lightning field video recording method according to claim 3, wherein the adjusting the parameter information of the image acquisition device according to the current picture acquired by the image acquisition device in the current scene until the image acquisition device acquires the picture satisfying the preset imaging effect comprises:
acquiring the current picture captured by the image acquisition device from the current scene at the current moment;
if the current picture does not meet the preset imaging effect, acquiring a current lumen value acquired by a brightness sensor from the current scene at the current moment;
extracting brightness information of color blocks included in the current picture, and adjusting parameter information of the image acquisition device according to the current lumen value and each brightness information;
and taking the next moment as a new current moment, and returning to execute the capturing operation of the current picture.
5. The lightning field video recording method according to claim 4, wherein adjusting parameter information of said image acquisition device based on said current lumen value and each of said luminance information comprises:
obtaining a sample picture for comparison with the current lumen value from a database based on the current lumen value;
gridding and dividing the current picture and the sample picture;
respectively comparing the brightness mean value of each grid of the current picture and the sample picture to obtain a comparison result;
and adjusting the exposure time and the exposure gain of the image acquisition device according to each comparison result.
6. The lightning field video recording method according to claim 5, wherein adjusting the exposure time and exposure gain of said image capturing device based on each of said comparisons comprises:
initializing two matrixes with the same size as grids of the current picture and the sample picture to obtain a comparison matrix and a weight matrix;
according to each comparison result, determining a first numerical value of a grid corresponding to the comparison matrix and a second numerical value of a grid corresponding to the weight matrix;
and adjusting the exposure time and the exposure gain of the image acquisition device according to the first numerical value and the second numerical value.
7. The lightning field video recording method according to claim 4, wherein adjusting parameter information of said image acquisition device based on said lumen value and each of said luminance information comprises:
and if the distribution interval length of each piece of brightness information is greater than the preset interval length, adjusting the contrast of the image acquisition device.
8. A lightning field video recording apparatus, comprising:
the acquisition module is used for acquiring audio information captured from a current scene;
the determining module is used for determining the current scene as a lightning occurrence scene if the audio information and the environmental information of the current scene meet the lightning field video recording condition;
and the recording module is used for controlling the image acquisition device to record videos in the lightning occurrence scene.
9. A lightning field video recording device, characterized in that it comprises:
one or more processors;
storage means for storing one or more programs;
the image acquisition device is used for acquiring at least one of a current picture and a current video of a current scene;
the sensing device is used for acquiring environmental information of a current scene;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the lightning field video recording method according to any one of claims 1-7.
10. A storage medium containing computer executable instructions for performing the lightning field video recording method according to any of claims 1-7 when executed by a computer processor.
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