CN112084367A - Picture playing method and device, computer equipment and storage medium - Google Patents
Picture playing method and device, computer equipment and storage medium Download PDFInfo
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- CN112084367A CN112084367A CN201910516020.7A CN201910516020A CN112084367A CN 112084367 A CN112084367 A CN 112084367A CN 201910516020 A CN201910516020 A CN 201910516020A CN 112084367 A CN112084367 A CN 112084367A
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/60—Information retrieval; Database structures therefor; File system structures therefor of audio data
- G06F16/64—Browsing; Visualisation therefor
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/70—Information retrieval; Database structures therefor; File system structures therefor of video data
- G06F16/74—Browsing; Visualisation therefor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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Abstract
The application relates to a picture playing method and device, computer equipment and a storage medium. The method comprises the following steps: preloading more than one picture according to the corresponding acquisition time stamp; each picture including at least a portion of the same object; sequentially storing the pre-loaded pictures into a picture pool; taking out the pictures in sequence according to the arrangement sequence in the picture pool; and playing the pictures taken out from the picture pool in sequence. By adopting the method, the fluency of tracking the target object track can be improved.
Description
Technical Field
The present application relates to the field of multimedia technologies, and in particular, to a method and an apparatus for playing pictures, a computer device, and a storage medium.
Background
With the development of multimedia technology, the tracking of the track of the target object can be realized based on videos which are acquired by a plurality of cameras and carry the same target object. At present, a target trajectory tracking mode based on multiple cameras generally plays a video stream acquired by a camera with a target object in a current visual field range, and when the target object enters the visual field range of another camera, the target object needs to be manually switched to the another camera to play the video stream acquired by the another camera, so as to track the target trajectory. However, the target object trajectory tracking method consumes time for switching the video stream, so that a pause phenomenon exists in the video stream switching and playing process, and the target object trajectory tracking is not smooth.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a picture playing method, an apparatus, a computer device and a storage medium capable of improving fluency of target trajectory tracking.
A method of picture playback, the method comprising:
preloading more than one picture according to the corresponding acquisition time stamp; each picture including at least a portion of the same object;
sequentially storing the pre-loaded pictures into a picture pool;
taking out the pictures in sequence according to the arrangement sequence in the picture pool;
and playing the pictures taken out from the picture pool in sequence.
In one embodiment, the method further comprises:
acquiring the corresponding target object coordinate of each picture;
arranging and storing the target object coordinates into a coordinate pool according to the acquisition time stamps of the corresponding pictures;
when the picture is taken out, corresponding target object coordinates are sequentially taken out according to the arrangement sequence in the coordinate pool;
and when the picture is played, marking the target object in the played picture according to the target object coordinate.
In one embodiment, the preloading more than one picture according to the corresponding acquisition time stamp includes:
acquiring a picture address sequence; the picture address sequence comprises respective picture addresses of more than one picture, and the picture addresses in the picture address sequence are arranged according to the acquisition time stamps of the corresponding pictures;
traversing the picture addresses in the picture address sequence;
and preloading the corresponding picture according to the traversed picture address.
In one embodiment, the picture address sequence is generated by:
when the more than one pictures are respectively collected by the plurality of cameras, sorting the picture addresses of the pictures from the same camera into picture address sub-sequences according to the collecting time stamps; and then, sequencing the picture address sub-sequences according to the time sequence to form a picture address sequence.
In one embodiment, the step of preloading the more than one picture according to the corresponding acquisition timestamp is performed periodically according to a preset period.
In one embodiment, before the pictures are sequentially taken according to the arrangement order in the picture pool, the method further includes:
monitoring the length of the picture pool;
and when the length of the monitored picture pool is greater than or equal to a preset threshold value, skipping to the step of sequentially taking out the pictures according to the arrangement sequence in the picture pool to continue execution.
In one embodiment, the method further comprises:
monitoring the number of pictures carrying played labels in the picture pool;
and when the monitored number is greater than or equal to a preset number threshold, deleting the picture carrying the played label from the picture pool.
In one embodiment, the method further comprises:
detecting preset trigger operation in real time;
when a preset trigger operation is detected, triggering a corresponding picture playing control instruction according to the preset trigger operation;
and controlling the picture to be played according to the picture playing instruction.
In one embodiment, the picture playing control instruction includes a pause playing instruction, a replay instruction, a full screen playing instruction, an exit full screen playing instruction, a screenshot instruction, an accelerated playing instruction or a decelerated playing instruction.
A picture playback apparatus, the apparatus comprising:
the pre-loading module is used for pre-loading more than one picture according to the corresponding acquisition time stamp; each picture including at least a portion of the same object;
the storage module is used for sequentially storing the pre-loaded pictures into a picture pool;
the taking-out module is used for sequentially taking out the pictures according to the arrangement sequence in the picture pool;
and the playing module is used for playing the pictures taken out from the picture pool in sequence.
In one embodiment, the apparatus further comprises an acquisition module;
the acquisition module is used for acquiring the corresponding target object coordinate of each picture;
the storage module is also used for storing the target object coordinates into a coordinate pool according to the acquisition time stamp arrangement of the corresponding picture;
the taking-out module is further used for sequentially taking out corresponding target object coordinates according to the arrangement sequence in the coordinate pool when the picture is taken out;
the playing module is further configured to mark the target object in the played picture according to the target object coordinate when the picture is played.
In one embodiment, the apparatus further comprises:
the monitoring module is used for monitoring the length of the picture pool; and when the length of the monitored picture pool is greater than or equal to a preset threshold value, triggering the taking-out module to execute the steps of sequentially taking out the pictures according to the arrangement sequence in the picture pool.
A computer device includes a memory and a processor, where the memory stores a computer program, and the processor implements the steps of the picture playing method in the above embodiments when executing the computer program.
A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the picture playing method described in the above-mentioned embodiments.
According to the picture playing method, the picture playing device, the computer equipment and the storage medium, the pictures which are acquired by more than one camera and contain at least one part of the same target object are preloaded according to corresponding acquisition time and are sequentially stored in the picture pool, so that the track of the target object is tracked in the sequential playing process of the pictures. When the pictures collected by the more than one camera are played, the corresponding pictures can be quickly taken out and played in sequence according to the arrangement sequence of the pictures in the picture pool, the switching of video streams collected by different cameras is not needed, namely, the video stream switching time consumption caused by the video stream switching does not exist in the picture playing process, the smoothness of picture playing can be improved, and the smoothness of the target object track tracking based on the more than one camera can be improved.
Drawings
FIG. 1 is a diagram illustrating an exemplary scenario for implementing a method for displaying images;
FIG. 2 is a flowchart illustrating a method for playing a picture according to an embodiment;
FIG. 3 is a flowchart illustrating a method for playing a picture according to another embodiment;
FIG. 4 is a block diagram of a picture playback device according to an embodiment;
FIG. 5 is a block diagram of another embodiment of a picture playing apparatus;
FIG. 6 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The picture playing method provided by the application can be applied to the application environment shown in fig. 1. The terminal 102 communicates with the server 104 through a network, and the camera 106 (including 106a, 106b.. 106n) communicates with the server 104 through the network. For more than one picture which is acquired by more than one camera and contains at least one part of the same target object, the server 104 performs preloading according to the corresponding acquisition time stamp and stores the pictures into the picture pool in sequence, and when the pictures are played, the corresponding pictures are taken out in sequence according to the arrangement sequence in the picture pool and played. The terminal 102 may be, but not limited to, various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices, and the server 104 may be implemented by an independent server or a server cluster formed by a plurality of servers.
In one embodiment, the terminal 102 may call a preconfigured picture playing plug-in through a browser to implement the picture playing method provided by the following embodiments. The terminal 102 may also parse, by using the browser, the web page file requested based on the preset website, and execute the parsed JS code when the JS code (Javascript, a script language) is parsed in the web page file, so as to implement the picture playing method provided in each embodiment described below. The terminal 102 may also trigger to invoke a preconfigured picture playing plugin when executing the parsed JS code to implement the picture playing method provided by each of the following embodiments.
In one embodiment, the server 104 may be an independent server or a server cluster integrating functions of web page content storage, picture address storage, picture storage, and the like, or a server cluster composed of a web page content storage server, a picture address storage server, a picture storage server, and the like.
In an embodiment, as shown in fig. 2, a method for playing a picture is provided, which is described by taking the method as an example for being applied to the terminal in fig. 1, and includes the following steps:
s202, preloading more than one picture according to corresponding acquisition time stamps; each picture including at least a portion of the same object.
The acquisition time stamp refers to the time when the camera acquires the picture. The preloading refers to obtaining a picture by loading according to a picture address, and specifically may refer to loading the picture as a picture object according to the picture address. A picture object is a representation of a picture, including various attribute information such as the size, and pixels of the picture. The target object refers to a designated object or object to be tracked, such as a designated movable object like a person, an animal or a vehicle.
Specifically, the terminal acquires respective picture addresses and acquisition time stamps of pictures which are acquired by more than one camera and all include at least one part of the same target object, and the pictures are pre-loaded according to the picture addresses of the corresponding pictures according to the acquisition time stamps of the pictures.
In one embodiment, the terminal preloads the picture as the picture object according to the picture address of the corresponding picture according to the time sequence of the acquisition time stamp of each of more than one picture.
In one embodiment, the terminal triggers and generates a picture acquisition request and sends the picture acquisition request to the server when detecting a preset trigger condition, and receives respective picture addresses and acquisition timestamps of pictures which are inquired and fed back by the server, acquired by more than one camera and all comprise at least one part of the same target object. The image acquisition request carries the target object identification and the designated time period of the same target object, and can also carry the camera identification of more than one camera. The server inquires the pictures which carry at least one part of the corresponding target object and have the acquisition timestamps within the specified time period according to the target object identification and the specified time period in the picture acquisition request, and can also screen the pictures acquired by the corresponding cameras from the inquired pictures according to the camera identification specified by the picture acquisition request and feed back respective picture addresses of the screened pictures to the terminal.
The target object identifier is used for uniquely identifying the target object, and may be a character string composed of characters such as numbers, letters, symbols, and the like, or may be other data that can be used for uniquely identifying the target object, for example, the target object is a human, and the target object identifier may be an identification card number, a face image, voice print data, and the like of the target object. The specified time period is a time interval determined by a specified start time and end time, and may also be a time interval determined by a specified time length and a specified start time (or end time), such as a time interval with the current time as the end time and the specified time length of 1 second, that is, the past 1 second. The preset trigger condition is, for example, a preset trigger operation triggered by a user is detected, and it is detected that the current time is consistent with the preset trigger time, or a preset duration is reached after a picture acquisition request is triggered last time.
In one embodiment, when the terminal detects a preset trigger condition, a matched picture is inquired locally according to the target object identification and the specified time period, and the picture address of the picture is obtained. The terminal can also screen matched pictures from the inquired pictures according to the camera identification, and acquire the picture addresses of the screened pictures.
In one embodiment, similar to the above-mentioned step of preloading pictures, the terminal may obtain, from the server or locally, a picture address and a collection timestamp of each of more than one picture collected by one camera, and preload the corresponding picture as a picture object according to the picture address in a timing sequence of the collection timestamp.
In one embodiment, the step of preloading the corresponding picture as the picture object by the terminal according to the picture address comprises: and the terminal acquires the corresponding picture according to the picture address through the browser and creates a corresponding picture object according to the acquired picture. Specifically, the terminal calls a pre-configured picture object creation function through a browser, and takes a picture address as an input parameter to be transmitted to the picture object creation function, so that a corresponding picture object is obtained by operating the picture object creation function. The picture object creation function may be understood as a part of the plug-in or the JS code.
In one embodiment, step S202 includes: acquiring a picture address sequence; the picture address sequence comprises respective picture addresses of more than one picture, and the picture addresses in the picture address sequence are arranged according to the acquisition time stamps of the corresponding pictures; traversing picture addresses in the picture address sequence; and preloading the corresponding picture according to the traversed picture address.
The picture address sequence is a set formed by arranging more than one picture addresses according to the acquisition time stamps of the corresponding pictures.
Specifically, the terminal acquires a picture address sequence formed by arranging more than one picture addresses according to the acquisition time stamps of the corresponding pictures, traverses the corresponding picture addresses according to the arrangement sequence in the picture address sequence, and preloads the corresponding pictures as picture objects according to the traversed picture addresses.
In one embodiment, the terminal acquires a picture address sequence from the server based on a picture acquisition request, pictures corresponding to picture addresses in the picture address sequence are acquired by more than one camera, and each picture comprises at least one part of the same target object. The terminal may also obtain the picture address sequence locally.
In one embodiment, the terminal acquires, from the server or the local, respective picture addresses and acquisition timestamps of pictures which are acquired by more than one camera and each include at least a part of the same target object, and sorts the corresponding picture addresses according to the acquisition timestamps of the pictures to obtain a picture address sequence.
In the above embodiment, the picture address sequence arranged according to the collecting time stamp of the corresponding picture is obtained, so that the corresponding picture is preloaded according to the picture address in sequence according to the arrangement order in the picture address sequence, and thus the corresponding picture can be played in sequence according to the collecting time stamp of the picture, so as to realize continuous tracking of the target trajectory.
In one embodiment, the picture address sequence is generated by: when more than one picture is respectively collected by a plurality of cameras, sorting picture addresses of pictures from the same camera into picture address sub-sequences according to the collecting time stamps; and then, sequencing the picture address sub-sequences according to the time sequence to form a picture address sequence.
The image address sub-sequence is a sub-set formed by arranging respective image addresses of at least one part of images which are acquired by the same camera and contain the same target object according to the acquisition time stamps of the corresponding images.
Specifically, the terminal obtains, from the server or locally, the respective picture addresses, the collection timestamps, and the camera identifications of the pictures which are collected by more than one camera and all include at least one part of the same target object, and sorts the picture addresses of the pictures corresponding to the camera identifications according to the collection timestamps of the corresponding pictures to obtain the picture address sub-sequences corresponding to the camera identifications. And the terminal sequences the picture address sub-sequences corresponding to the camera identifications according to a time sequence to obtain a picture address sequence consisting of the acquired picture addresses. It can be understood that the picture is collected by the camera corresponding to the corresponding camera identification.
In one embodiment, for each picture address subsequence corresponding to each camera identification, the terminal determines the acquisition time stamp of the picture corresponding to the first picture address in each picture address subsequence, and sorts the corresponding picture address subsequences according to the timing sequence of the determined acquisition time stamps to form the picture address sequence.
In the above embodiment, for the case where the target object appears in the visual field ranges of different cameras at the same time, the images which are collected by the cameras and include at least a part of the target object are sequentially played according to the appearance time sequence of the target object in the visual field ranges of the cameras, so as to ensure the fluency when tracking the target object trajectory based on more than one camera.
And S204, sequentially storing the pre-loaded pictures into a picture pool.
The picture pool is a storage space for caching pictures, and specifically may be a storage space for caching picture objects. A picture pool can be understood as an empty set of cacheable pictures.
Specifically, when the terminal preloads more than one picture according to the corresponding acquisition time stamp, the preloaded pictures are sequentially stored in the picture pool. That is, when the terminal obtains the corresponding picture according to the picture address preloading, the corresponding picture is stored in the picture pool.
In one embodiment, when the terminal preloads the picture as the picture object according to the picture address of the corresponding picture according to the acquisition timestamp of each picture, the picture objects obtained by preloading are sequentially stored in the picture pool.
In one embodiment, in the process of tracking the target object for the second time, the terminal triggers to create a picture pool for caching pictures when a preset trigger condition is detected for the first time.
And S206, sequentially taking out the pictures according to the arrangement sequence in the picture pool.
And S208, playing the pictures sequentially taken out from the picture pool.
Specifically, when playing the images, the terminal sequentially takes out the corresponding images according to the arrangement sequence of the images in the image pool, and plays the sequentially taken out images. That is, the terminal sequentially takes out and plays the pictures according to the arrangement sequence of the pictures in the picture pool.
In one embodiment, the terminal sequentially takes out the picture objects according to the arrangement sequence of the picture objects in the picture pool, draws corresponding pictures according to the sequentially taken out picture objects, and plays the pictures. The terminal acquires the pre-configured canvas, and draws corresponding pictures on the canvas according to the picture objects taken out in sequence so as to play the pictures. The canvas may be canvas specifically.
In one embodiment, when the terminal detects a preset playing condition, the pictures are sequentially taken out according to the arrangement sequence in the picture pool and played. The preset playing condition is, for example, a preset playing triggering operation of the user is detected, or it is monitored that the length of the picture pool reaches a preset threshold. The length of the picture pool refers to the number of pictures stored in the picture pool, and the preset threshold value can be self-defined and can also be determined according to the number of the pre-loaded pictures. It can be understood that if the preset threshold is 1, when the terminal detects that the picture to be played exists in the picture pool, the playing process is triggered.
In one embodiment, when the terminal sequentially takes out and plays the pictures according to the arrangement sequence in the picture pool, the pictures are preloaded according to the acquisition time stamps of the pictures and stored in the picture pool, so that the effect of concurrent preloading and playing is achieved. Therefore, in the whole picture playing process carried out at the time, besides the first time/first batch of pictures are preloaded and waited, the effect of playing while loading can be realized, and the fluency of tracking the target object track can be improved.
According to the picture playing method, the pictures which are acquired by more than one camera and contain at least one part of the same target object are preloaded according to the corresponding acquisition time and are sequentially stored in the picture pool, so that the track of the target object is tracked in the sequential playing process of the pictures. When the pictures collected by the more than one camera are played, the corresponding pictures can be quickly taken out and played in sequence according to the arrangement sequence of the pictures in the picture pool, the switching of video streams collected by different cameras is not needed, namely, the video stream switching time consumption caused by the video stream switching does not exist in the picture playing process, the smoothness of picture playing can be improved, and the smoothness of the target object track tracking based on the more than one camera can be improved.
In one embodiment, the method for playing pictures further includes: acquiring the corresponding target object coordinate of each picture; arranging and storing the coordinates of the target object into a coordinate pool according to the acquisition time stamps of the corresponding pictures; when the picture is taken out, corresponding target object coordinates are sequentially taken out according to the arrangement sequence in the coordinate pool; and when the picture is played, marking the target object in the played picture according to the target object coordinate.
The target object coordinate is the coordinate of the target object or at least a part of the target object in the picture, and is used for representing the position of the target object in the corresponding picture. It is understood that if the picture includes at least a portion of the object, the object coordinates may refer to the coordinates of the at least a portion of the object in the corresponding picture. Object coordinates are a set of coordinates that includes more than one pixel point coordinate. The respective object or at least a part of the object can be marked in the respective picture on the basis of the object coordinates.
Specifically, when the terminal preloads the corresponding picture according to the acquisition time stamp of each of the more than one picture, the terminal acquires the target object coordinate corresponding to each of the more than one picture from the server or locally. And for more than one acquired target object coordinate, the terminal sequentially stores the acquired target object coordinate into the coordinate pool according to the acquisition time stamps of the corresponding pictures. And when the terminal sequentially takes out the pictures according to the arrangement sequence in the picture pool, sequentially taking out the corresponding target object coordinates according to the arrangement sequence in the coordinate pool. And when the terminal plays the pictures taken out from the picture pool in sequence, marking the corresponding target objects in the played corresponding pictures according to the coordinates of the target objects taken out in sequence. It can be understood that the pictures in the picture pool are arranged according to the corresponding collecting time stamps, and the target object coordinates in the coordinate pool are arranged according to the collecting time stamps of the corresponding pictures, so that the arrangement sequence of the pictures in the picture pool corresponds to the arrangement sequence of the corresponding target object coordinates in the coordinate pool in a one-to-one manner. The coordinates of the target objects sequentially taken out by the terminal according to the arrangement sequence in the coordinate pool correspond to the pictures sequentially taken out according to the arrangement sequence in the picture pool, so that the corresponding target objects can be marked in the played pictures based on the coordinates of the corresponding taken out target objects when the taken pictures are played.
In one embodiment, when acquiring the respective picture addresses of more than one picture, the terminal acquires the respective target object coordinates of the more than one picture. The object coordinates are determined by the server or the terminal in advance based on the position of the object or at least a part of the object in the picture.
In one embodiment, when the terminal acquires a picture address sequence including picture addresses of more than one picture, the terminal acquires a target object coordinate sequence which includes target object coordinates corresponding to the more than one picture and is arranged according to the acquisition time stamps of the corresponding pictures, and sequentially stores the target object coordinates into a coordinate pool according to the arrangement sequence in the target object coordinate sequence. The step of acquiring the coordinate sequence of the target object by the terminal is similar to the step of acquiring the corresponding picture address sequence, and is not described herein again. The arrangement sequence of the target object coordinates in the target object coordinate sequence is consistent with the sequence of the picture addresses of the corresponding pictures in the picture address sequence.
In one embodiment, the terminal traverses the target object coordinates in the target object coordinate sequence and stores the traversed target object coordinates into the coordinate pool in sequence. It can be understood that the steps of traversing the picture addresses in the picture address sequence by the terminal and sequentially storing the pictures preloaded based on the traversed picture addresses into the picture pool can be respectively performed synchronously with the steps of traversing the coordinates of the target object in the target object coordinate sequence and sequentially storing the traversed target object coordinates into the coordinate pool. It can be understood that, since preloading of the corresponding picture based on the picture address takes time, the terminal may perform the above traversal and storage operations with respect to the picture address and the target object coordinate according to the arrangement order in the picture address sequence and the arrangement order in the target object coordinate sequence.
In one embodiment, when the terminal draws a corresponding picture according to the picture object taken out from the picture pool, the terminal draws a corresponding identifier in the drawn picture according to the coordinates of the target object correspondingly taken out from the coordinate pool, so as to mark the corresponding target object in the picture. It is understood that the terminal creates a corresponding coordinate pool when creating the picture pool.
In one embodiment, the object coordinates comprise more than one coordinate that can be used to mark the respective object or at least a portion of the object in the respective picture. The object coordinates are related to a marker shape for marking the object, i.e. the object coordinates comprise coordinates that can be used to determine the position of the marker shape, such as a rectangle, circle or other shape, in the picture. Taking the identification shape as a rectangle as an example, the target object coordinates include respective coordinates of upper-left-corner pixel points and lower-right-corner pixel points of the rectangle in the picture. The terminal or the server may determine the coordinates of the target object corresponding to each picture based on the existing target detection algorithm, which is not described herein again nor specifically limited.
In one embodiment, the object coordinates may refer to coordinates of a designated portion of the object, such as a human face, in the corresponding picture. And determining the coordinates of the target object corresponding to the picture through face detection and comparison. The track of the target object is realized by marking the designated part of the target object in the played picture.
In the embodiment, the picture and the coordinates of the target object corresponding to the picture are respectively stored in the picture pool and the coordinate pool according to the acquisition time stamp of the picture, so that when the picture is played, the picture and the coordinates of the corresponding target object can be respectively taken out in sequence according to the arrangement sequence, and the corresponding target object is marked in the picture played in sequence according to the coordinates of the corresponding target object, so that the smoothness of tracking the target object track can be improved, and the target object track can be effectively tracked.
In one embodiment, step S202 is performed periodically according to a preset period.
Wherein the preset period is a pre-specified time length, such as 1 second. Specifically, the terminal periodically acquires, from the server or the local, respective picture addresses of pictures which are acquired by more than one camera and each include at least a part of the same target object, according to a preset period. And for more than one picture address which is acquired regularly, the terminal loads the corresponding picture into the picture object in sequence according to the acquisition timestamp of the corresponding picture and stores the picture object into the picture pool, so that when the picture is played, the picture objects are sequentially taken out according to the arrangement sequence of the picture objects in the picture pool, and the corresponding picture is drawn and played according to the sequentially taken picture objects.
In one embodiment, the terminal periodically acquires the picture address and the target object coordinate of more than one picture from the server or the local according to a preset period. The more than one pictures are pictures which are acquired by more than one camera in the current preset period and all contain at least one part of the same target object. Taking the preset period as 1 second as an example, the more than one pictures are pictures which are acquired by more than one camera in the past 1 second and all contain at least one part of the same target object. It is understood that the more than one pictures that the terminal periodically preloads according to the preset period may be one or more pictures collected by one camera.
In one embodiment, for the pictures collected by the camera in real time, the terminal may periodically obtain the respective picture addresses of the pictures collected in real time according to a preset period. For pictures historically collected by the camera, the terminal can simultaneously acquire respective picture addresses of the historically collected pictures.
In the embodiment, the pictures acquired in real time are periodically preloaded according to the preset period, and the corresponding pictures are sequentially played according to the preloading sequence, so that the tracking fluency is ensured on the premise of realizing the continuous tracking of the target track.
In an embodiment, before step S206, the method for playing pictures further includes: monitoring the length of a picture pool of the picture pool; and when the length of the monitored picture pool is greater than or equal to a preset threshold value, skipping to the step of sequentially taking out the pictures according to the arrangement sequence in the picture pool to continue execution.
The length of the picture pool refers to the number of pictures stored in the picture pool, and specifically may refer to the number of pictures stored in the picture pool and to be played. It can be understood that, if the picture objects are stored in the picture pool, the length of the picture pool refers to the number of the picture objects already stored in the picture pool. The preset threshold is a preset number threshold, and may be customized according to an actual situation, for example, 50, or determined according to the number of the acquired picture addresses.
Specifically, the terminal monitors the length of the picture pool in real time, and compares the monitored length of the picture pool with a preset threshold. And when the monitored length of the picture pool is greater than or equal to the preset threshold, the terminal sequentially takes out corresponding pictures according to the arrangement sequence of the pictures in the picture pool and plays the sequentially taken pictures.
In one embodiment, when the monitored length of the picture pool is greater than or equal to the preset threshold, the terminal sequentially takes out the corresponding pictures according to the arrangement sequence of the pictures in the picture pool, and sequentially takes out the corresponding target coordinates according to the arrangement sequence of the target coordinates in the coordinate pool. And the terminal plays the pictures taken out from the picture pool in sequence and marks the target object in the played pictures according to the corresponding target object coordinates.
In one embodiment, when the terminal acquires the respective picture addresses of more than one picture, the number of the picture addresses is counted. When the number of the counted picture addresses is larger than or equal to the first number threshold, the terminal acquires a picture occupation space corresponding to any one of the more than one pictures, inquires a preset picture playing speed, and determines a preset threshold according to the picture occupation space and the picture playing speed. The picture occupation space refers to the size of a picture, for example, 1M, and the picture occupation space affects the preloading speed of the picture. The picture play rate refers to the number of pictures played per unit time. And when the number of the counted picture addresses is smaller than a first number threshold, the terminal determines the number of the counted picture addresses as a preset threshold. Therefore, when the number of the pictures to be played is larger than or equal to the first number threshold, the terminal preloads the pictures in batches, and when the number of the pictures which are preloaded and stored in the picture pool is larger than or equal to the preset threshold, the pictures are played in sequence. When the number of the pictures to be played is smaller than the first number threshold, the number of the pictures to be played is less, and the terminal starts to play the pictures in sequence when all the pictures are preloaded and stored in the picture pool.
In an embodiment, in the whole current picture playing process, before the terminal takes out the picture from the picture pool for the first time and plays the picture, the terminal executes the step of monitoring the length of the picture pool of the picture, and when the monitored length of the picture pool is greater than or equal to a preset threshold, the terminal takes out the pictures in sequence according to the arrangement sequence in the picture pool and plays the pictures. It can be understood that when pictures are taken out and played in sequence according to the arrangement sequence in the picture pool, the terminal does not need to perform the step of monitoring the length of the picture pool of the pictures. Besides the time consumed by playing waiting before the picture is played for the first time, the picture can be continuously played, so that the smoothness of tracking the target object track is ensured.
In an embodiment, for pictures that are periodically obtained according to a preset period and are collected by a camera in real time, a preset threshold value that is compared with the length of a picture pool may be set to 1, that is, when it is monitored that stored pictures exist in the picture pool, the terminal sequentially takes out the pictures according to the arrangement order in the picture pool and plays the pictures.
In the above embodiment, when it is monitored that the length of the picture pool is greater than or equal to the preset threshold, the pictures are sequentially taken out according to the arrangement sequence in the picture pool and played, so that the fluency of the target object according to tracking is ensured in the picture playing process.
In one embodiment, the method for playing pictures further includes: monitoring the number of pictures carrying the played labels in the picture pool; and when the monitored number is greater than or equal to the preset number threshold, deleting the pictures carrying the played labels from the picture pool.
The played label is used to identify the corresponding picture as a played picture, and may be a character string composed of at least one of characters such as numbers, letters, symbols, and the like.
Specifically, the terminal monitors pictures carrying the played tags in the picture pool in real time, counts the number of the monitored pictures, and compares the monitored number with a preset number threshold. And when the monitored number is greater than or equal to a preset number threshold, deleting the monitored pictures carrying the played labels from the picture pool.
In one embodiment, when the monitored number is greater than or equal to the preset number threshold, the terminal deletes the monitored picture carrying the played tag from the picture pool, and deletes the target object coordinate corresponding to the monitored picture carrying the played tag from the coordinate pool.
In an embodiment, after the pictures are taken out from the picture pool and played in the above manner, the terminal marks the played labels on the currently played pictures in the picture pool.
In an embodiment, different preset number thresholds may be preconfigured for the pictures collected in real time and the pictures collected in history, for example, the preset number threshold corresponding to the pictures collected in real time may be set to 1, so as to delete the pictures in real time; the preset quantity threshold corresponding to the historically collected pictures can be set to 10, so that batch deletion of the pictures is realized.
In the above embodiment, the played pictures are deleted in real time or in batch based on the preset number threshold and the played identifier, so as to release the storage space occupied by the played pictures, thereby reducing the pressure of the browser.
In one embodiment, the terminal monitors the total number of stored pictures in the picture pool in real time and compares the monitored total number with a second number threshold. And when the monitored total number is greater than or equal to the second number threshold, the terminal stops executing the step of preloading more than one picture according to the corresponding acquisition time stamp, namely the terminal stops executing the picture preloading operation. And when the monitored total number is smaller than a second number threshold, the terminal continuously performs the step of preloading more than one picture according to the corresponding acquisition time stamp. The terminal acquires the picture occupation space of any one of more than one picture, inquires the pre-configured browser loadable value, and determines a second quantity threshold according to the picture occupation space and the browser loadable value. The picture occupation space can be directly extracted from the picture objects stored in the picture pool. Therefore, the pressure of the browser can be effectively avoided from increasing.
In one embodiment, the method for playing pictures further includes: detecting preset trigger operation in real time; when the preset trigger operation is detected, triggering a corresponding picture playing control instruction according to the preset trigger operation; and controlling the playing of the picture according to the picture playing instruction.
The preset trigger operation is a preset trigger operation, such as a touch operation, a cursor operation, a key operation, or a voice operation. The touch operation can be touch click operation, touch press operation or touch slide operation on a preset control, and the touch operation can be single-point touch operation or multi-point touch operation; the cursor operation can be an operation of controlling a cursor to click or an operation of controlling the cursor to press; the key operation may be a virtual key operation or a physical key operation, etc. The picture control command is a command for controlling the playing of a picture, and may be a character string composed of at least one of characters such as numbers, letters, and symbols.
Specifically, the terminal detects a preset trigger operation in real time, and generates a corresponding picture playing control instruction according to the detected preset trigger operation when the preset trigger operation is detected. And the terminal controls the playing of the picture according to the picture playing control instruction generated by triggering. It can be understood that the terminal calls the plug-in or the JS code to control the playing of the picture based on the picture playing control instruction through the browser.
In the above embodiment, the playing of the picture is controlled based on the detected preset trigger operation, so as to meet different target object trajectory tracking requirements.
In one embodiment, the picture play control instructions include a pause play instruction, a replay instruction, a full screen play instruction, an exit full screen play instruction, a screenshot instruction, an accelerated play instruction, or a decelerated play instruction.
The pause playing instruction is used for instructing the terminal to pause playing the pictures, namely temporarily stopping executing the step of taking the pictures out of the picture pool and playing the pictures. And when the instruction is replayed, the instruction is used for instructing the terminal to replay the played picture. The replay instruction includes at least one of an identification of the picture to be replayed, a time period for determining the picture to be replayed, and the like. The full screen playing instruction is an instruction for instructing the terminal to play the picture in a full screen manner. The command of exiting full screen playing is a command for instructing the terminal to play the picture in a form of exiting full screen. The terminal can realize the full-screen playing or quitting the full-screen playing of the picture by adjusting the size of the canvas. And exiting full-screen playing refers to drawing the picture according to the preset canvas size and playing. The screenshot command is a command for instructing the terminal to capture and store a currently played picture. The speed-up play instruction or the speed-down play instruction is an instruction for instructing the terminal to change (speed up or slow down) the picture play rate. The accelerated play command or the decelerated play command may carry a changed picture play rate.
In the above embodiments, a plurality of functions capable of adjusting the picture playing modes are provided to meet the diversified picture playing requirements.
As shown in fig. 3, in an embodiment, a method for playing a picture is provided, which specifically includes the following steps:
s302, acquiring a picture address sequence and a target object coordinate sequence; the picture address sequence comprises respective picture addresses of more than one picture, and the picture addresses in the picture address sequence are arranged according to the acquisition time stamps of the corresponding pictures; more than one picture is acquired by more than one camera, and each picture comprises at least one part of the same target object; the target object coordinate sequence comprises target object coordinates corresponding to more than one pictures respectively, and the arrangement sequence of the target object coordinates in the target object coordinate sequence is consistent with the arrangement sequence of the picture addresses of the corresponding pictures in the picture address sequence.
S304, traversing the picture addresses in the picture address sequence and traversing the target object coordinates in the target object coordinate sequence.
S306, preloading the corresponding picture according to the traversed picture address.
And S308, sequentially storing the pre-loaded pictures into a picture pool, and sequentially storing the traversed target object coordinates into a coordinate pool.
S310, monitoring the length of the picture pool.
And S312, when the length of the monitored picture pool is greater than or equal to the preset threshold, sequentially taking out the pictures according to the arrangement sequence in the picture pool, and sequentially taking out the corresponding target object coordinates according to the arrangement sequence in the coordinate pool.
And S314, playing the pictures sequentially taken out from the picture pool, and marking the target object in the played pictures according to the corresponding target object coordinates.
S316, the number of the pictures carrying the played labels in the picture pool is monitored.
And S318, when the monitored number is greater than or equal to the preset number threshold, deleting the picture carrying the played label from the picture pool, and deleting the corresponding target object coordinate of the picture from the coordinate pool.
In the above embodiment, the picture address sequence and the corresponding target object coordinate sequence arranged by more than one picture address according to the acquisition time stamp of the corresponding picture are acquired, the pictures corresponding to the more than one picture addresses are acquired by more than one camera and each comprise at least one part of the same target object, preloading corresponding pictures according to the arrangement sequence in the picture address sequence and storing the pictures into a picture pool, sequentially storing the coordinates of each target object into a coordinate pool according to the coordinate sequence of the target object, when the length of the picture pool is monitored to be larger than or equal to a preset threshold value, pictures are taken out in sequence according to the arrangement sequence of the picture pool, sequentially taking out the coordinates of corresponding target objects according to the arrangement sequence of the coordinate pools, playing the sequentially taken pictures, and marking the target object in the played picture according to the corresponding target object coordinate so as to improve the fluency of the target object track tracking realized based on a plurality of cameras. And when the number of the played pictures in the picture pool is greater than or equal to the preset number threshold value, deleting the played pictures from the picture pool and deleting corresponding target object coordinates from the coordinate pool so as to reduce the pressure of the browser and further improve the fluency of tracking the target object track.
It should be understood that, although the steps in the flowcharts of fig. 2 and 3 are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2 and 3 may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the sub-steps or stages is not necessarily sequential, but may be performed alternately or alternately with other steps or at least some of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 4, there is provided a picture playing apparatus 400, including: a preloading module 402, a logging module 404, a fetching module 406, and a playing module 408, wherein:
a preloading module 402, configured to preload more than one picture according to corresponding acquisition timestamps; each picture including at least a portion of the same object;
a storage module 404, configured to store the pre-loaded pictures in a picture pool in sequence;
a fetching module 406, configured to fetch the pictures in sequence according to the arrangement order in the picture pool;
the playing module 408 is configured to play pictures sequentially taken from the picture pool.
In one embodiment, as shown in fig. 5, the picture playing apparatus 400 further includes: an acquisition module 410;
an obtaining module 410, configured to obtain coordinates of a target object corresponding to each picture;
the storing module 404 is further configured to store the coordinates of the target object into a coordinate pool according to the collection timestamp arrangement of the corresponding picture;
the fetching module 406 is further configured to sequentially fetch corresponding target object coordinates according to the arrangement order in the coordinate pool when the picture is fetched;
the playing module 408 is further configured to mark the target object in the played picture according to the target object coordinates when the picture is played.
In one embodiment, the preloading module 402 is further configured to obtain a picture address sequence; the picture address sequence comprises respective picture addresses of more than one picture, and the picture addresses in the picture address sequence are arranged according to the acquisition time stamps of the corresponding pictures; traversing picture addresses in the picture address sequence; and preloading the corresponding picture according to the traversed picture address.
In one embodiment, the preloading module 402 is further configured to sort the picture addresses of the pictures from the same camera into a picture address subsequence according to the capture timestamp when more than one picture is captured by the multiple cameras respectively; and then, sequencing the picture address sub-sequences according to the time sequence to form a picture address sequence.
In an embodiment, the preloading module 402 is further configured to periodically perform the step of preloading more than one picture according to the corresponding acquisition time stamp according to a preset period.
In one embodiment, as shown in fig. 5, the picture playing apparatus 400 further includes: a listening module 412;
a monitoring module 412, configured to monitor a picture pool length of the picture pool; when the monitored length of the picture pool is greater than or equal to the preset threshold, the fetching module 406 is triggered to execute the steps of sequentially fetching the pictures according to the arrangement sequence in the picture pool.
In one embodiment, the monitoring module 412 is further configured to monitor the number of pictures in the picture pool that carry the played tags; and when the monitored number is greater than or equal to the preset number threshold, deleting the pictures carrying the played labels from the picture pool.
In one embodiment, as shown in fig. 5, the picture playing apparatus 400 further includes: a control module 414;
a control module 414, configured to detect a preset trigger operation in real time; when the preset trigger operation is detected, triggering a corresponding picture playing control instruction according to the preset trigger operation; and controlling the playing of the picture according to the picture playing instruction.
In one embodiment, the picture play control instructions include a pause play instruction, a replay instruction, a full screen play instruction, an exit full screen play instruction, a screenshot instruction, an accelerated play instruction, or a decelerated play instruction.
For specific limitations of the picture playing apparatus, reference may be made to the above limitations on the picture playing method, which is not described herein again. The modules in the picture playing device can be wholly or partially realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 6. The computer device includes a processor, a memory, a network interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a picture playing method. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 6 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, which includes a memory and a processor, the memory stores a computer program, and the processor implements the steps of the picture playing method in the above embodiments when executing the computer program.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which when executed by a processor implements the steps of the picture playing method in the above-described embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (14)
1. A method of picture playback, the method comprising:
preloading more than one picture according to the corresponding acquisition time stamp; each picture including at least a portion of the same object;
sequentially storing the pre-loaded pictures into a picture pool;
taking out the pictures in sequence according to the arrangement sequence in the picture pool;
and playing the pictures taken out from the picture pool in sequence.
2. The method of claim 1, further comprising:
acquiring the corresponding target object coordinate of each picture;
arranging and storing the target object coordinates into a coordinate pool according to the acquisition time stamps of the corresponding pictures;
when the picture is taken out, corresponding target object coordinates are sequentially taken out according to the arrangement sequence in the coordinate pool;
and when the picture is played, marking the target object in the played picture according to the target object coordinate.
3. The method of claim 1, wherein preloading the more than one picture according to the corresponding acquisition timestamp comprises:
acquiring a picture address sequence; the picture address sequence comprises respective picture addresses of more than one picture, and the picture addresses in the picture address sequence are arranged according to the acquisition time stamps of the corresponding pictures;
traversing the picture addresses in the picture address sequence;
and preloading the corresponding picture according to the traversed picture address.
4. The method of claim 3, wherein the sequence of picture addresses is generated by:
when the more than one pictures are respectively collected by the plurality of cameras, sorting the picture addresses of the pictures from the same camera into picture address sub-sequences according to the collecting time stamps; and then, sequencing the picture address sub-sequences according to the time sequence to form a picture address sequence.
5. The method according to claim 1, wherein the step of preloading more than one picture according to the corresponding acquisition time stamp is performed periodically according to a preset period.
6. The method of claim 1, wherein before the sequentially fetching the pictures according to the order in the picture pool, the method further comprises:
monitoring the length of the picture pool;
and when the length of the monitored picture pool is greater than or equal to a preset threshold value, skipping to the step of sequentially taking out the pictures according to the arrangement sequence in the picture pool to continue execution.
7. The method of claim 1, further comprising:
monitoring the number of pictures carrying played labels in the picture pool;
and when the monitored number is greater than or equal to a preset number threshold, deleting the picture carrying the played label from the picture pool.
8. The method of claim 1, further comprising:
detecting preset trigger operation in real time;
when a preset trigger operation is detected, triggering a corresponding picture playing control instruction according to the preset trigger operation;
and controlling the picture to be played according to the picture playing instruction.
9. The method of claim 8, wherein the picture-play control instructions comprise pause-play instructions, replay instructions, full-screen-play instructions, exit full-screen-play instructions, screenshot instructions, speed-up-play instructions, or slow-down-play instructions.
10. A picture playback apparatus, characterized in that the apparatus comprises:
the pre-loading module is used for pre-loading more than one picture according to the corresponding acquisition time stamp; each picture including at least a portion of the same object;
the storage module is used for sequentially storing the pre-loaded pictures into a picture pool;
the taking-out module is used for sequentially taking out the pictures according to the arrangement sequence in the picture pool;
and the playing module is used for playing the pictures taken out from the picture pool in sequence.
11. The apparatus of claim 10, further comprising an acquisition module;
the acquisition module is used for acquiring the corresponding target object coordinate of each picture;
the storage module is also used for storing the target object coordinates into a coordinate pool according to the acquisition time stamp arrangement of the corresponding picture;
the taking-out module is further used for sequentially taking out corresponding target object coordinates according to the arrangement sequence in the coordinate pool when the picture is taken out;
the playing module is further configured to mark the target object in the played picture according to the target object coordinate when the picture is played.
12. The apparatus of claim 10, further comprising:
the monitoring module is used for monitoring the length of the picture pool; and when the length of the monitored picture pool is greater than or equal to a preset threshold value, triggering the taking-out module to execute the steps of sequentially taking out the pictures according to the arrangement sequence in the picture pool.
13. A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the steps of the method of any one of claims 1 to 9 when executing the computer program.
14. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 9.
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| CN113409426A (en) * | 2021-06-29 | 2021-09-17 | 平安养老保险股份有限公司 | Dynamic image playing method and device, computer equipment and readable storage medium |
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Effective date of registration: 20221207 Address after: 710000 second floor, building B3, yunhuigu, No. 156, Tiangu 8th Road, software new town, high tech Zone, Xi'an, Shaanxi Applicant after: Xi'an Guangqi Intelligent Technology Co.,Ltd. Address before: 710000 second floor, building B3, yunhuigu, 156 Tiangu 8th Road, software new town, Xi'an high tech Zone, Xi'an City, Shaanxi Province Applicant before: Xi'an Guangqi Future Technology Research Institute |