CN114285989A - Self-adaptive adjustment method and device for emergency video trigger threshold - Google Patents
Self-adaptive adjustment method and device for emergency video trigger threshold Download PDFInfo
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Abstract
The application aims to provide a method and equipment for adaptively adjusting an emergency video trigger threshold. Compared with the prior art, the method and the device have the advantages that the emergency video mode is triggered to obtain the emergency video by obtaining the first trigger threshold and the measured value collected in the preset updating period when the first trigger threshold is reached; recording the number of triggers for which the measured value exceeds the first trigger threshold within the update period; updating the first trigger threshold according to the triggering times and the measurement value corresponding to each triggering, and taking the updated trigger threshold as a second trigger threshold; and replacing the first trigger threshold with the second trigger threshold, and repeating the steps to realize the self-adaptive adjustment of the trigger threshold. By the method, the trigger threshold can be periodically and adaptively adjusted according to the actual application scene of the user, the dependency on the originally set trigger threshold is reduced, the introduction of false triggering is reduced, and better user experience is realized.
Description
Technical Field
The application relates to the technical field of computers, in particular to an adaptive adjustment technology for an emergency video trigger threshold.
Background
The automatic triggering technology of the emergency video is generally applied to the scenes of vehicle driving and remote monitoring and is used for recording sudden vehicle collision or scratch and other behaviors. The existing automatic emergency video triggering scheme usually sets the threshold value for triggering the emergency video to a relatively sensitive fixed value, so that more misoperation can be introduced while the sensitive triggering is ensured, and the normal measurement value change is falsely detected as collision behavior, thereby increasing the use cost; another conventional scheme is to provide sensitivity selection for a user, and the user can select the sensitivity according to the requirement, so that different trigger thresholds are used in different application scenarios, but since the user often cannot correctly predict a future use scenario and does not have the capability of accurately judging the sensitivity, the method cannot achieve an expected effect and better user experience in practical application.
Disclosure of Invention
The application aims to provide a method and equipment for adaptively adjusting an emergency video trigger threshold.
According to an aspect of the present application, there is provided a method for adaptive adjustment of an emergency video trigger threshold, wherein the method includes:
a, acquiring a first trigger threshold and a measured value acquired in a preset updating period, wherein an emergency video mode is triggered when the first trigger threshold is reached so as to acquire an emergency video;
b, recording the triggering times of the measured value exceeding the first triggering threshold value in the updating period;
c, updating the first trigger threshold according to the trigger times and the measurement value corresponding to each trigger, and taking the updated trigger threshold as a second trigger threshold;
and D, replacing the first trigger threshold with the second trigger threshold, and repeating the steps B, C and D to realize the adaptive adjustment of the trigger thresholds.
Further wherein the emergency video mode comprises:
if the client is in a non-recording state, starting a camera to record an emergency video according to a preset time length by taking the triggering moment when the measured value exceeds a triggering threshold value as a starting point; alternatively, the first and second electrodes may be,
if the client is in the recording state, taking the triggering moment when the measured value exceeds the triggering threshold as a starting point, and intercepting the emergency video of the recorded video according to a preset time length;
and storing the emergency video in a client, wherein the emergency video and the measured value have a one-to-one correspondence relationship.
Further, after the step B, the method further includes:
scanning the trigger time in the update period according to a preset reporting interval, wherein the reporting interval is smaller than the update period;
if only one trigger moment exists in one reporting interval, reporting the emergency video corresponding to the trigger moment; alternatively, the first and second electrodes may be,
and if a plurality of trigger moments exist in one reporting interval, reporting the emergency video with the maximum trigger value in the plurality of trigger moments.
Further, wherein the step C comprises:
if the triggering times reach a preset number threshold, counting the average value of the measured values exceeding the triggering threshold;
the average value is used as the second trigger threshold.
Further, after the taking the average value as the second trigger threshold, the method further includes:
recording a critical time point when the triggering times reach the number threshold;
if the time interval between the critical time point and the start of the refresh cycle is less than half of the refresh cycle, the critical time point is used as the start of the next refresh cycle.
Further, wherein the step C comprises:
and if the triggering times are 0, taking the first triggering threshold value as a second triggering threshold value.
Further, wherein the reporting comprises: and sending prompt information to equipment bound by a user and uploading the emergency video to cloud storage.
Preferably, wherein the obtaining a first trigger threshold comprises: and acquiring a first trigger threshold set by a user or acquiring a sensitivity gear selected by the user, and taking a numerical value corresponding to the gear as the first trigger threshold.
According to another aspect of the present application, there is also provided a computer readable medium having computer readable instructions stored thereon, the computer readable instructions being executable by a processor to implement the operations of the method as described above.
According to still another aspect of the present application, there is also provided an adaptive adjustment apparatus for an emergency video trigger threshold, wherein the apparatus includes:
one or more processors; and
a memory storing computer readable instructions that, when executed, cause the processor to perform the operations of the above-described method.
Compared with the prior art, the method and the device have the advantages that the emergency video mode is triggered to obtain the emergency video by obtaining the first trigger threshold and the measured value collected in the preset updating period when the first trigger threshold is reached; recording the number of triggers for which the measured value exceeds the first trigger threshold within the update period; updating the first trigger threshold according to the triggering times and the measurement value corresponding to each triggering, and taking the updated trigger threshold as a second trigger threshold; and replacing the first trigger threshold with the second trigger threshold, and repeating the steps to realize the self-adaptive adjustment of the trigger threshold. By the method, the trigger threshold of the emergency video can be periodically and adaptively adjusted, the dependency on the originally set trigger threshold is reduced, the trigger threshold can be automatically updated according to the actual application scene of a user, the introduction of false triggering is reduced, and better user experience is realized.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
fig. 1 illustrates a flow chart of a method for adaptive adjustment of an emergency video trigger threshold in accordance with an aspect of the subject application;
fig. 2 shows a flowchart of a method for adaptively adjusting an emergency video trigger threshold according to a preferred embodiment of the present application.
The same or similar reference numbers in the drawings identify the same or similar elements.
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures.
In a typical configuration of the present application, the terminal, the device serving the network, and the trusted party each include one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include non-transitory computer readable media (transient media), such as modulated data signals and carrier waves.
Servers include, but are not limited to, computers, network hosts, a single network server, multiple sets of network servers, or a cloud of multiple servers; here, the Cloud is composed of a large number of computers or web servers based on Cloud Computing (Cloud Computing), which is a kind of distributed Computing, one virtual supercomputer consisting of a collection of loosely coupled computers.
The client comprises but is not limited to a vehicle data recorder, a mobile phone, a smart watch, a smart bracelet and the like, and electronic equipment with a configurable acceleration and/or other sensors belongs to the client applicable to the application.
To further illustrate the technical means and effects adopted by the present application, the following description clearly and completely describes the technical solution of the present application with reference to the accompanying drawings and preferred embodiments.
Fig. 1 illustrates an adaptive adjustment method for an emergency video trigger threshold provided in an aspect of the present application, where the method includes:
s11, acquiring a first trigger threshold and a measured value acquired in a preset updating period, wherein when the first trigger threshold is reached, an emergency video mode is triggered to acquire an emergency video;
s12 recording the number of triggers for which the measured value exceeds the first trigger threshold within the update period;
s13, updating the first trigger threshold according to the trigger times and the measurement value corresponding to each trigger, and taking the updated trigger threshold as a second trigger threshold;
s14 replaces the first trigger threshold with the second trigger threshold, and repeats the steps S12, S13 and S14 to realize adaptive adjustment of trigger thresholds.
In this embodiment, in step S11, a first trigger threshold and a measurement value collected in a preset update period are obtained, wherein the first trigger threshold is reached to trigger an emergency video mode to obtain an emergency video.
In this step, further, the obtaining a first trigger threshold includes: and acquiring a first trigger threshold set by a user or acquiring a sensitivity gear selected by the user, and taking a numerical value corresponding to the gear as the first trigger threshold.
In this step, a first trigger threshold is set by the client, and the first trigger threshold is an initial state of the emergency video trigger threshold, and can be set by the user, for example, before the client applies, a setting prompt is sent to the user to input a triggered threshold of the emergency video mode, that is, the first trigger threshold, and in this state, when a measurement value acquired by the client exceeds the first trigger threshold, the client automatically starts the emergency video mode; the client may also provide a multi-gear selection for the user, for example, before the client applies, a prompt is sent to the user to set a trigger threshold range according to a scene to be applied, when the user selects a high-sensitivity gear, a corresponding trigger threshold is low, more abnormal behaviors may be captured, when the user selects a low-sensitivity gear, a corresponding trigger threshold is high, a probability of false triggering is low, the user selects a gear according to a requirement of the user, and the trigger threshold corresponding to the gear is used as the first trigger threshold.
After the first trigger threshold set by the client is obtained, the first trigger threshold is adaptively updated according to a preset updating period, wherein the updating period can be set as a fixed value by default or can be determined by a user according to an actual application scene. And carrying out self-adaptive updating on the first trigger threshold according to the first trigger threshold set by the client and the measurement value acquired in the updating period.
When the emergency video mode is triggered, preferably using a G-sensor, the acceleration value of the client is periodically captured through high frequency, the behavior of the client is analyzed and predicted, and when the G-sensor is used, the corresponding first trigger threshold value is the acceleration value. Meanwhile, a gyroscope and/or a magnetometer can be cooperatively applied to capture the self motion and/or the orientation of the client, so that more comprehensive abnormal behavior analysis and prediction can be realized. Here, the client may also set a corresponding emergency video trigger threshold by measuring data such as speed, and capture an abnormal behavior of the client, and the application does not limit the specific types of the measurement values and the sensors, and any data and device types to which the threshold updating method in the application can be applied are within the scope of the application.
In this embodiment, in step S12, the number of triggers for which the measured value exceeds the first trigger threshold in the update period is recorded.
In this step, a counter may be set, and the counter is incremented each time the measurement value collected by the client exceeds the first trigger threshold. And after the updating period is finished, resetting the counter and restarting the counting of the next updating period. It should be clear that the way of setting the counter is only an example, and other schemes that can record the number of times are within the scope of protection of the present application.
In this embodiment, in step S13, the first trigger threshold is updated according to the number of triggers and the measurement value corresponding to each trigger, and the updated trigger threshold is used as the second trigger threshold.
In this step, further, if the number of triggers reaches a preset number threshold, counting an average value of the measured values exceeding the trigger threshold; the average value is used as the second trigger threshold.
Here, a number threshold is set, which is used to evaluate whether the trigger threshold of the emergency video matches the current application scenario. For example, when the first trigger threshold is frequently triggered and the number of triggers exceeds the set number threshold, the first trigger threshold of the currently set emergency video is low, and needs to be adjusted up to reduce the occurrence of false triggering. Therefore, when the counted triggering times reach the set number threshold, that is, the triggering times are equal to the number threshold, the average value of all the measurement values exceeding the triggering threshold is counted, and the average value is used as the updated triggering threshold, that is, the second triggering threshold, so as to achieve the up-regulation of the first triggering threshold. Another feasible embodiment is to count the average of all the measured values exceeding the trigger threshold value in the whole update period, and use the average as the second trigger threshold value.
In addition, the fact that the measured value frequently exceeds the first trigger threshold may also be that a collision or scratch or other behaviors frequently occur in an application scene of the client, so in a preferred embodiment, the basis for updating the trigger threshold is improved, 1.5 times of the trigger threshold is used as a measurement standard of the update threshold, the trigger times of the measured value exceeding 1.5 times of the trigger threshold are recorded, when the trigger times exceed a preset number threshold, the average value of all the measured values exceeding 1.5 times of the trigger threshold is counted, and the average value is used as an updated second trigger threshold.
Continuing in this step, further, after taking the average value as the second trigger threshold, recording a critical time point when the number of triggers reaches the number threshold, if the time interval between the critical time point and the start of the update cycle is small
In half of the refresh cycle, the critical time point is used as the starting point of the next refresh cycle.
Here, if the first trigger threshold is frequently triggered within a half of the update period and the number of triggers exceeds the preset number threshold during a self-adaptive update, it indicates that the first trigger threshold is set too low, so that the update period can be terminated in advance after the trigger threshold is updated, and the emergency video trigger of the next half of the update period does not need to be performed according to the original first trigger threshold. In this case, a time point when the number of triggers reaches the number threshold, that is, a critical time point, is recorded, after the first trigger threshold is updated, the process of the next update period is started in advance with the critical time point as a starting point, and the triggering of the emergency video and the adaptive updating of the trigger threshold are performed on the basis that the second trigger threshold after the update is updated is the next update period. The method accelerates the process of self-adaptive updating of the trigger threshold, can quickly train the trigger threshold which accords with the current application scene, and avoids unnecessary time consumption.
In this step, if the number of times of triggering is 0, the first triggering threshold is set as a second triggering threshold.
Here, when the trigger threshold of the emergency video is not triggered for a long time, taking an update cycle as an example, when the number of triggers in an update cycle is 0, it may be that the current trigger threshold is too high to correctly monitor the abnormal fluctuation of the measured value, and therefore, the current trigger threshold needs to be adjusted downward. If the current trigger threshold value is subjected to the up-regulation of a plurality of updating periods, the trigger threshold value is restored to a first trigger threshold value initially set by the client; if the first trigger threshold initially set by the client is not triggered, the first trigger threshold is updated to be 0.5 times of the trigger threshold. In this way, a downward adjustment of the trigger threshold is achieved.
Since the time interval of the update period is short, and only one update period is not triggered as the basis for adjusting the trigger threshold downward, which may result in over-training of the trigger threshold, in a preferred embodiment, the number of triggers that the measured value exceeds the trigger threshold in 5 update periods is counted, and if the number of triggers is 0, that is, the trigger threshold is not triggered all the time in five update periods, the trigger threshold is updated to the first trigger threshold set by the client. By the method, the excessive training of the trigger threshold is avoided, and the down-regulation updating of the trigger threshold is realized.
In this embodiment, in the step S14, the second trigger threshold is substituted for the first trigger threshold, and the steps S12, S13 and S14 are repeated to realize the adaptive adjustment of the trigger threshold. In this step, the adaptive adjustment of the next update period is performed using the second trigger threshold after the adaptive adjustment as the first trigger threshold, and this is repeated.
Further, the emergency video mode includes: if the client is in a non-recording state, starting a camera to record an emergency video according to a preset time length by taking the triggering moment when the measured value exceeds a triggering threshold value as a starting point; or if the client is in the recording state, taking the triggering moment when the measured value exceeds the triggering threshold value as a starting point, and intercepting the recorded video according to a preset time length; and storing the emergency video in a client, wherein the emergency video and the measured value have a one-to-one correspondence relationship.
In the application scene, when a measured value acquired by a client does not exceed a trigger threshold, a camera is in a closed state, and when the measured value exceeds the trigger threshold, the camera is started to record an emergency video according to a preset time length; the self-adaptive updating method of the trigger threshold can also be applied to a driving record scene of a vehicle driving state, the camera is always in a video recording state in the scene, and when a measured value acquired by the client exceeds the trigger threshold, the circularly recorded driving monitoring video is intercepted by taking the trigger moment as a starting point to obtain an emergency video with preset time. And storing the acquired emergency video in the client.
In a preferred embodiment, see fig. 2, wherein steps S21, S22, S24 and S25 in fig. 2 are the same as or substantially the same as steps S11, S12, S13 and S14 in the embodiment of fig. 1, and therefore are not repeated herein and are only included herein by way of reference. Wherein the step S23 includes: scanning the trigger time in the update period according to a preset reporting interval, wherein the reporting interval is smaller than the update period; if only one trigger moment exists in one reporting interval, reporting the emergency video corresponding to the trigger moment; or if a plurality of trigger moments exist in one reporting interval, reporting the emergency video with the maximum trigger value in the plurality of trigger moments.
And screening the emergency video stored in the client, and reporting the emergency video with the possibility of recording collision or scratch behaviors. Since the emergency video has a corresponding trigger time, a reporting interval may be set for scanning the trigger time in the current update period, and the reporting interval should be smaller than the update period in order to fully scan all the trigger times. Scanning from the starting time of an updating period according to a reporting interval, and if only one triggering time exists in one reporting interval, reporting the emergency video corresponding to the triggering time; if a plurality of trigger moments exist in one reporting interval, the trigger actions may be caused by the same collision or scratch action, so that only the emergency video with the maximum corresponding measured value in the plurality of trigger moments is reported. Therefore, repeated reporting of the same accident is avoided, and resource waste and flow consumption are greatly reduced.
Preferably, to further reduce the reporting of unnecessary emergency videos, whether a trigger time when the measured value exceeds 1.5 times of the trigger threshold exists may be scanned according to a preset reporting interval, and if only one trigger time when the measured value exceeds 1.5 times of the trigger threshold exists in one reporting interval, the emergency video corresponding to the trigger time is reported; if a plurality of trigger moments with the measured values exceeding 1.5 times of the trigger threshold exist in one reporting interval, only the emergency video with the maximum corresponding measured value is reported. By the method, the emergency video is better reported and screened, and the system resource consumption and the transmission cost are further reduced.
Further, the reporting includes: and sending prompt information to equipment bound by a user and uploading the emergency video to cloud storage. The screened emergency video records suspected collision or scratch behaviors, and the emergency video is backed up in cloud storage and is notified to a user. In an actual application scene, after the screened emergency video is transmitted to cloud storage, prompt information is sent to equipment bound by a user. Here, the device bound by the user is one or more of electronic devices capable of communicating, such as a mobile phone, a smart watch, a smart bracelet, and a notebook.
Compared with the prior art, the method and the device have the advantages that the emergency video mode is triggered to obtain the emergency video by obtaining the first trigger threshold and the measured value collected in the preset updating period when the first trigger threshold is reached; recording the number of triggers for which the measured value exceeds the first trigger threshold within the update period; updating the first trigger threshold according to the triggering times and the measurement value corresponding to each triggering, and taking the updated trigger threshold as a second trigger threshold; and replacing the first trigger threshold with the second trigger threshold, and repeating the steps to realize the self-adaptive adjustment of the trigger threshold. By the method, the trigger threshold can be periodically and adaptively adjusted according to the actual application scene of the user, the dependency on the originally set trigger threshold is reduced, the introduction of false triggering is reduced, and better user experience is realized.
Furthermore, the embodiment of the present application also provides a computer readable medium, on which computer readable instructions are stored, and the computer readable instructions can be executed by a processor to implement the foregoing method.
The embodiment of the present application further provides an adaptive adjustment device for an emergency video trigger threshold, where the device includes:
one or more processors; and
a memory storing computer readable instructions that, when executed, cause the processor to perform the operations of the foregoing method.
For example, the computer readable instructions, when executed, cause the one or more processors to: acquiring a first trigger threshold and a measured value acquired in a preset updating period, wherein an emergency video mode is triggered when the first trigger threshold is reached so as to acquire an emergency video; recording the number of triggers for which the measured value exceeds the first trigger threshold within the update period; updating the first trigger threshold according to the triggering times and the measurement value corresponding to each triggering, and taking the updated trigger threshold as a second trigger threshold; and replacing the first trigger threshold value with the second trigger threshold value, and repeating the steps to realize the self-adaptive adjustment of the trigger threshold value.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the apparatus claims may also be implemented by one unit or means in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.
Claims (10)
1. A method for adaptively adjusting an emergency video trigger threshold, wherein the method comprises the following steps:
a, acquiring a first trigger threshold and a measured value acquired in a preset updating period, wherein an emergency video mode is triggered when the first trigger threshold is reached so as to acquire an emergency video;
b, recording the triggering times of the measured value exceeding the first triggering threshold value in the updating period;
c, updating the first trigger threshold according to the trigger times and the measurement value corresponding to each trigger, and taking the updated trigger threshold as a second trigger threshold;
and D, replacing the first trigger threshold with the second trigger threshold, and repeating the steps B, C and D to realize the adaptive adjustment of the trigger thresholds.
2. The method of claim 1, wherein the emergency video mode comprises:
if the client is in a non-recording state, starting a camera to record an emergency video according to a preset time length by taking the triggering moment when the measured value exceeds a triggering threshold value as a starting point; alternatively, the first and second electrodes may be,
if the client is in the recording state, taking the triggering moment when the measured value exceeds the triggering threshold as a starting point, and intercepting the emergency video of the recorded video according to a preset time length;
and storing the emergency video in a client, wherein the emergency video and the measured value have a one-to-one correspondence relationship.
3. The method of claim 2, wherein after step B, the method further comprises:
scanning the trigger time in the update period according to a preset reporting interval, wherein the reporting interval is smaller than the update period;
if only one trigger moment exists in one reporting interval, reporting the emergency video corresponding to the trigger moment; alternatively, the first and second electrodes may be,
and if a plurality of trigger moments exist in one reporting interval, reporting the emergency video with the maximum trigger value in the plurality of trigger moments.
4. The method according to any one of claims 1 to 3, wherein said step C comprises:
if the triggering times reach a preset number threshold, counting the average value of the measured values exceeding the triggering threshold;
the average value is used as the second trigger threshold.
5. The method of claim 4, wherein the taking the average value as the second trigger threshold further comprises:
recording a critical time point when the triggering times reach the number threshold;
if the time interval between the critical time point and the start of the refresh cycle is less than half of the refresh cycle, the critical time point is used as the start of the next refresh cycle.
6. The method according to any one of claims 1 to 3, wherein said step C comprises:
and if the triggering times are 0, taking the first triggering threshold value as a second triggering threshold value.
7. The method of any of claims 3 to 6, wherein the reporting comprises: and sending prompt information to equipment bound by a user and uploading the emergency video to cloud storage.
8. The method of any of claims 1-7, wherein the obtaining a first trigger threshold comprises: and acquiring a first trigger threshold set by a user or acquiring a sensitivity gear selected by the user, and taking a numerical value corresponding to the gear as the first trigger threshold.
9. A computer readable medium having computer readable instructions stored thereon which are executable by a processor to implement the method of any one of claims 1 to 8.
10. An adaptive adjustment device for an emergency video trigger threshold, wherein the device comprises:
one or more processors; and
a memory storing computer readable instructions that, when executed, cause the processor to perform the operations of the method of any of claims 1 to 8.
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| CN114640830A (en) * | 2022-05-13 | 2022-06-17 | 深圳时识科技有限公司 | Monitoring device and method and automobile data recorder |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114640830A (en) * | 2022-05-13 | 2022-06-17 | 深圳时识科技有限公司 | Monitoring device and method and automobile data recorder |
| CN114640830B (en) * | 2022-05-13 | 2022-11-29 | 深圳时识科技有限公司 | Monitoring device and method and automobile data recorder |
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