CN106101868A - Reduced graph generating method and generating means - Google Patents

Reduced graph generating method and generating means Download PDF

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Publication number
CN106101868A
CN106101868A CN201610564552.4A CN201610564552A CN106101868A CN 106101868 A CN106101868 A CN 106101868A CN 201610564552 A CN201610564552 A CN 201610564552A CN 106101868 A CN106101868 A CN 106101868A
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CN
China
Prior art keywords
picture
thumbnail
preset
time point
array
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610564552.4A
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Chinese (zh)
Inventor
赵建刚
刘景松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leshi Zhixin Electronic Technology Tianjin Co Ltd
LeTV Holding Beijing Co Ltd
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Leshi Zhixin Electronic Technology Tianjin Co Ltd
LeTV Holding Beijing Co Ltd
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Application filed by Leshi Zhixin Electronic Technology Tianjin Co Ltd, LeTV Holding Beijing Co Ltd filed Critical Leshi Zhixin Electronic Technology Tianjin Co Ltd
Priority to CN201610564552.4A priority Critical patent/CN106101868A/en
Publication of CN106101868A publication Critical patent/CN106101868A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85Assembly of content; Generation of multimedia applications
    • H04N21/854Content authoring
    • H04N21/8549Creating video summaries, e.g. movie trailer
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/433Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4334Recording operations
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/435Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47End-user applications
    • H04N21/472End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/4722End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting additional data associated with the content
    • H04N21/4725End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting additional data associated with the content using interactive regions of the image, e.g. hot spots

Abstract

The invention belongs to communication and electronic technology field, disclose a kind of reduced graph generating method and generating means, reduced graph generating method includes: generate picture according to preset time point, judge whether described picture meets preset picture standard, if meeting, then using described picture as final thumbnail, if not meeting, then generate next picture according to preset time interval, and continue executing with the step judging whether next picture described meets preset picture standard, until finding the picture meeting preset picture standard, using the picture that finds as final thumbnail.The embodiment of the present invention is by judging the picture obtained, export with thumbnail form again when being judged as meeting preset picture standard, the thumbnail avoiding output is black figure or the problem of the picture without other information, and user can know the content wanting to understand from the thumbnail of inventive embodiments output.

Description

Reduced graph generating method and generating means
Technical field
The invention belongs to communication and electronic technology field, particularly relate to a kind of reduced graph generating method and generating means.
Background technology
When user browses video when using mobile terminal mobile phone or intelligent television, normally open file management application, so After browse list of videos time probably understand the content of each video, or understand the viewing location the most having watched video.
The present inventor finds during research the application, and current file management application generally uses breviary Figure realizes this function, and ultimate principle is by an incoming time parameter t, watches 1 point such as last time 30 seconds, then t is 90s, thus obtain the image of t time, and show.But, in prior art, for the video literary composition being not turned on before this Part, the value of usual t is 0, and now video file, when especially film starts, the picture of acquisition is ater picture, or i.e. Just t is not 0, but the picture obtained in the t time be exactly just a black, pure white or other there is no the figure of more information Sheet, user cannot be by this black or its content not having in the picture of more information to know video file.
Summary of the invention
Embodiments provide a kind of reduced graph generating method and generating means, it is intended to solve when the picture intercepted without More information, the problem that user cannot know video file content.
Embodiment of the present invention first aspect provides a kind of reduced graph generating method, including:
Picture is generated according to preset time point;
Judge whether described picture meets preset picture standard, if meeting, then using described picture as final breviary Figure;
If not meeting, then generate next picture according to preset time interval, and continue executing with judgement next picture described and be The no step meeting preset picture standard, until finding the picture meeting preset picture standard, makees the picture found For final thumbnail.
Further, described according to preset time point generate picture include:
Obtain the identification information of video file, and judge whether described identification information is to have play mark, the most then obtain The time point comprised in described identification information, generates picture with described time point for preset time point.
Further, described judging whether described picture meets preset picture standard, if meeting, then described picture being made Include for final thumbnail:
Travel through described picture, obtain the rgb value of each pixel of described picture;
Rgb value according to each pixel obtains R [h] [w] array, G [h] [w] array and B [h] [w] array, described h table Showing the height of described picture, w represents the width of described picture;
Calculate described R [h] [w] array, G [h] [w] array and the variance of B [h] [w] array, by calculated variance yields Compare with preset variance yields;
If described calculated variance yields is more than described preset variance yields, then using described picture as final breviary Figure.
Further, described until finding the picture meeting preset picture standard, using the picture that finds as finally Thumbnail include:
If reaching preset picture number, then in the picture that will obtain according to the quantity of the picture of preset time interval acquisition The picture of pixel variance yields maximum is final thumbnail.
Further, described thumbnail acquisition methods also includes:
Click on the operation of thumbnail in response to user, with time point corresponding to described thumbnail as starting point, commence play out and regard Frequency file.
Embodiment of the present invention second aspect provides a kind of thumbnail generating apparatus, including:
Signal generating unit, for generating picture according to preset time point;
Judging unit, for judging whether described picture meets preset picture standard, if meeting, then makees described picture For final thumbnail;
Cycling element, if for not meeting, then generates next picture according to preset time interval, and continues executing with and judge institute Stating whether next picture meets the step of preset picture standard, until finding the picture meeting preset picture standard, will look into The picture found is as final thumbnail.
Further, described signal generating unit includes:
Identity reading module, for obtaining the identification information of video file, and judges whether described identification information is to broadcast Put mark, the most then obtain the time point comprised in described identification information, generate figure with described time point for preset time point.
Further, described judging unit includes:
Pixel spider module, is used for traveling through described picture, obtains the rgb value of each pixel of described picture;
Array acquisition module, for obtaining R [h] [w] array, G [h] [w] array and B according to the rgb value of each pixel [h] [w] array, described h represents the height of described picture, and w represents the width of described picture;
Variance computing module, is used for calculating described R [h] [w] array, G [h] [w] array and the variance of B [h] [w] array, Calculated variance yields is compared with preset variance yields;
Variance comparison module, if for described calculated variance yields more than described preset variance yields, then by described Picture is as final thumbnail.
Further, described cycling element includes:
Quantity comparison module, if the quantity of the picture for obtaining according to preset time interval reaches preset picture number, The picture that in the picture that then will obtain, pixel variance yields is maximum is final thumbnail.
Further, described thumbnail acquisition device also includes:
Broadcast unit, for clicking on the operation of thumbnail in response to user, with time point corresponding to described thumbnail for Point, commences play out video file.
Knowable to the invention described above embodiment, the embodiment of the present invention, by judging the picture obtained, is being judged as Export with thumbnail form again when meeting preset picture standard, it is to avoid the thumbnail of output is black figure or believes without other The problem of the picture of breath, user can know the content wanting to understand from the thumbnail of inventive embodiments output.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this Some embodiments of invention, for those skilled in the art, on the premise of not paying creative work, it is also possible to root Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the structured flowchart of a kind of mobile terminal.
The flow chart of a kind of reduced graph generating method that Fig. 2 provides for the embodiment of the present invention one.
The flow chart of a kind of reduced graph generating method that Fig. 3 provides for the embodiment of the present invention two.
The flow chart of a kind of reduced graph generating method that Fig. 4 provides for the embodiment of the present invention three.
The flow chart of a kind of reduced graph generating method that Fig. 5 provides for the embodiment of the present invention four.
The flow chart of a kind of reduced graph generating method that Fig. 6 provides for the embodiment of the present invention five.
The structural representation of a kind of thumbnail generating apparatus that Fig. 7 provides for the embodiment of the present invention six.
The structural representation of a kind of thumbnail generating apparatus that Fig. 8 provides for the embodiment of the present invention seven.
The structural representation of the judging unit that Fig. 9 provides for the embodiment of the present invention eight.
The structural representation of a kind of thumbnail generating apparatus that Figure 10 provides for the embodiment of the present invention nine.
The structural representation of a kind of thumbnail generating apparatus that Figure 11 provides for the embodiment of the present invention ten.
Detailed description of the invention
For making the goal of the invention of the present invention, feature, the advantage can be the most obvious and understandable, below in conjunction with the present invention Accompanying drawing in embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention, it is clear that described reality Executing example is only a part of embodiment of the present invention, and not all embodiments.Based on the embodiment in the present invention, people in the art The every other embodiment that member is obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
Fig. 1 shows the structured flowchart of a kind of mobile terminal.The reduced graph generating method that the embodiment of the present invention provides can be answered In mobile terminal 10 as shown in Figure 1, mobile terminal 10 can be, but not limited to include: battery need to be relied on to remain properly functioning And support network and the smart mobile phone of download function, notebook, panel computer etc..
As it is shown in figure 1, mobile terminal 10 includes memorizer 101, storage control 102, one or more (figure only illustrates One) processor 103, Peripheral Interface 104, radio-frequency module 105, key-press module 106, audio-frequency module 107 and Touch Screen 108.These assemblies pass through the mutual communication of one or more communication bus/holding wire 109.
Being appreciated that the structure shown in Fig. 1 is only signal, the structure of mobile terminal is not caused restriction by it.Mobile whole End 10 may also include the assembly more or more less than shown in Fig. 1, or has the configuration different from shown in Fig. 1.Shown in Fig. 1 Each assembly can use hardware, software or a combination thereof to realize.
Memorizer 101 can be used for storing software program and module, as the mobile terminal in the embodiment of the present invention nullifies journey Programmed instruction/module that the method and device of sequence is corresponding, the software journey that processor 103 is stored in memorizer 101 by operation Sequence and module, thus perform the application of various function and data process, i.e. realize above-mentioned mobile terminal 10 and nullify application journey The method of sequence.
Memorizer 101 can include high speed random access memory, may also include nonvolatile memory, such as one or more magnetic Property storage device, flash memory or other non-volatile solid state memories.In some instances, memorizer 101 can farther include The memorizer remotely located relative to processor 103, these remote memories can be connected to mobile terminal 10 by network.On The example stating network includes but not limited to the Internet, intranet, LAN, mobile radio communication and combinations thereof.Processor 103 And the access of memorizer 101 can be carried out under the control of storage control 102 by other possible assemblies.
Various input/output devices are coupled to CPU and memorizer 101 by Peripheral Interface 104.Processor 103 runs and deposits Various softwares in reservoir 101, instruction are to perform the various functions of mobile terminal 10 and to carry out data process.
In certain embodiments, Peripheral Interface 104, processor 103 and storage control 102 can be in one single chips Realize.In some other example, they can be realized by independent chip respectively.
Radio-frequency module 105 is used for receiving and sending electromagnetic wave, it is achieved electromagnetic wave is changed with the mutual of the signal of telecommunication, thus with Communication network or other equipment carry out communication.Radio-frequency module 105 can include the various existing electricity for performing these functions Circuit component, such as, antenna, RF transceiver, digital signal processor, encryption/deciphering chip, subscriber identity module (SIM) card, Memorizer etc..Radio-frequency module 105 can be carried out with various networks such as the Internet, intranet, the wireless network of preset type Communication or carry out communication by the wireless network of preset type and other equipment.The wireless network of above-mentioned preset type can wrap Include cellular telephone networks, WLAN or Metropolitan Area Network (MAN).The wireless network of above-mentioned preset type can use various communication Standard, agreement and technology, include, but are not limited to global system for mobile communications (Global System for Mobile Communication, GSM), enhancement mode mobile communication technology (Enhanced Data GSM Environment, EDGE), wide Band CDMA (Wideband Code Division Multiple Access, W-CDMA), CDMA (Code Division Access, CDMA), tdma (Time Division Multiple Access, TDMA), Bluetooth, adopting wireless fidelity technology (Wireless-Fidelity, WiFi) is (such as IEEE-USA's standard IEEE 802.11a, IEEE 802.11b, IEEE802.11g and/or IEEE 802.11n), the networking telephone (Voice over Internet Protocal, VoIP), worldwide interoperability for microwave accesses (Worldwide Interoperability for Microwave Access, Wi-Max), other are for mail, instant messaging and the agreement of short message, and any other is suitable Communications protocol.
Key-press module 106 provides user to carry out the interface inputted to mobile terminal, user can by press different by Key is so that mobile terminal 10 performs different functions.
Audio-frequency module 107 provides a user with audio interface, and it can include one or more mike, one or more raises Sound device and voicefrequency circuit.Voicefrequency circuit receives voice data at Peripheral Interface 104, and voice data is converted to electrical information, Electrical information is transmitted to speaker.Electrical information is converted to the sound wave that human ear can be heard by speaker.Voicefrequency circuit is also from mike Place receives electrical information, converts electrical signals to voice data, and by data transmission in network telephony to Peripheral Interface 104 to carry out into one The process of step.Voice data can obtain at memorizer 101 or by radio-frequency module 105.Additionally, voice data can also Store to memorizer 101 or be transmitted by radio-frequency module 105.In some instances, audio-frequency module 107 may also include Hole broadcast by one earphone, for providing audio interface to earphone or other equipment.
Touch Screen 108 provides an output and inputting interface between mobile terminal and user simultaneously.Specifically, touch-control Screen 108 displays to the user that video frequency output, and the content of these video frequency output can include word, figure, video and any group thereof Close.Some output results correspond to some user interface object.Touch Screen 108 also receives the input of user, such as user Click, the gesture operation such as slip, in order to the input of these users is responded by user interface object.Detection user's input Technology can be based on resistance-type, condenser type or other the most possible touch control detection technology.Touch Screen 108 display unit Instantiation include, but are not limited to liquid crystal display or light emitting polymer displays.
Fig. 2 shows the first embodiment that the present invention provides, a kind of reduced graph generating method, including:
S1, generates picture according to preset time point.
In this step, when there are video file on equipment mobile terminal or other support video-sees being detected, Or when user uses the operation of the equipment browse video file of mobile terminal or other support video-sees, will be according to time preset Between point generate picture.Specifically, desktop computer, notebook computer, mobile terminal are used for no service condition, such as user Or the foradownloaded video such as intelligent television, when being stored in video file, thumbnail generating apparatus will generate picture according to preset time point;As When user uses smart mobile phone, desktop computer, notebook, VR (Virtual Reality, virtual reality) equipment or Intelligent electric Depending on, by video APP viewing video or open file management application and browse video file list, regard when detecting that user browses During the operation of frequency file, thumbnail generating apparatus will generate picture according to preset time point.Picture is generated according to preset time point, Refer to thumbnail generating apparatus and intercept corresponding picture according to this preset time point at video file, during as represented preset with t Between point, then thumbnail generating apparatus intercept video file t video pictures generate picture.During specifically used, If user is when using the terminal of Android system (Android), it is stored in video file, or uses Android system (Android) Terminal when carrying out video tour, thumbnail generating apparatus can use Android standard api to obtain the picture of time point t.
S2, it is judged that whether described picture meets preset picture standard, if meeting, then using described picture as final contracting Sketch map.
In this step, thumbnail generating apparatus by according to the picture standard pre-set in step S1 generate picture Judge, if it is determined that the picture generated in step S1 meets preset picture standard, then using this picture as final contracting Sketch map, preset picture standard can be configured according to actual application standard, as greater clarity with breviary Figure represents the particular content of this video file, can must be fulfilled for colorfulness with the picture generated in setting procedure S1 and reach certain Value, or when saturation reaches certain value, just judge that this picture meets preset picture standard.User can be according to actual needs It is configured, does not limits.
S3, if not meeting, then generates next picture according to preset time interval, and continues executing with judgement next picture described Whether meet the step of preset picture standard, until finding the picture meeting preset picture standard, the picture that will find As final thumbnail.
In this step, if the picture generated in step S1 does not meets preset picture format, will be according to preset time interval Generate next picture.As t represents preset time point, with 1s as time interval, if thumbnail process units judges in step S1 raw The picture become is unsatisfactory for preset picture standard, and the sectional drawing video pictures on video file of the time point with t+1s is being generated figure Sheet, and continue executing with the step judging whether this picture meets preset picture standard, if the picture that t+1s time point generates depends on So do not meet preset picture standard, then continue to generate picture with t+2s for time point sectional drawing video pictures on video file, Until being eventually found the picture meeting preset picture standard, using this picture as final thumbnail.
In above-described embodiment that the present invention provides, the video pictures according to preset time point sectional drawing video file is generated Picture, and judge picture, judge just can be final using this picture as contracting after this picture meets preset picture standard Sketch map is shown to user.The present embodiment judges, by preset picture standard, the picture that preset time point generates, and can meet use The relevant information of video file is known at family from the thumbnail of final display, it is to avoid show black, pure white or other are without information Thumbnail.
Below by a specifically used example, the present embodiment is illustrated further:
Originally make in use-case, preset time point be 2 points 30 seconds, preset time interval is 2 seconds, and user is at the desktop of oneself Brain is stored in video file A.When detect panel computer there are the video file A not generating thumbnail time, thumbnail is raw Become device according to preset time point, from video file A, intercept 2 points of video pictures of 30 seconds generate picture, judge video literary composition After the picture that 2 points of part A generate for 30 seconds does not meets preset picture standard, thumbnail generating apparatus continues from video file A Intercept 2 points of video pictures of 32 seconds and generate picture, after judging that 2 points of pictures generated for 32 seconds do not meet preset picture standard, Thumbnail generating apparatus continues to intercept 2 points of video pictures of 34 seconds from video file A and generates picture.Judging 2 points of lifes in 34 seconds After the picture become meets preset picture standard, thumbnail generating apparatus will be protected using this picture as final thumbnail Deposit.The file depositing video file is opened, when browsing video file, when detecting that user uses click to choose user During video file A, thumbnail generating apparatus by the upper right corner of video file A by this thumbnail of display.
Make use-case that the present embodiment to be illustrated further below by second:
Originally making use-case, preset time point is 50 minutes and 10 seconds, and time interval is 5 seconds, and user uses intelligent television to watch film, When the video file list opened in intelligent television, video file list is browsed by user by remote controller.Work as user When using remote controller control choice box to choose video B, thumbnail generating apparatus determines that this operation is that user browses this video file Operation, generate pictures, when judging that this video pictures meets preset figure by intercepting 50 points of video pictures of 10 seconds from video B During sheet standard, by with 50 points of pictures generated for 10 seconds as thumbnail, display is in the upper left corner of video B.
It should be appreciated that in the present embodiment as a example by previously generating thumbnail, at thumbnail after generation, work as detection When browsing the operation of video file or video file list to user, by this thumbnail of output.But above-described embodiment is not Just for situation about previously generating, when user watches video online, the operation of video can be browsed according to user, carry out breviary Map generalization, user uses different terminals, and the mode browsing video file list is the most different, regards as user browses in computer end During frequency file list, the roller of mouse is used to roll video file list, with the arrow of mouse for browsing focus, when browsing Jiao Point rests on the duration of certain video file and exceedes preset time period, such as 2s, it is determined that want to browse the behaviour of this video file for user Make;User is using mobile terminal, such as smart mobile phone, when browsing video file list, uses finger slip video file list, With the touch location of user for browsing focus, rest on time of certain video file exceed preset time period when detection browses focus Time, it is determined that want to browse the operation of this video file for user;For such as intelligent television etc., use the dresses such as remote controller as user Put when browsing video file list, when choice box is for browsing focus, when detecting that browsing focus rests on certain video file Between exceed preset time period, it is determined that want to browse the operation of this video file for user;Same, use the VR helmet for user Carrying out the situation of panoramic video viewing, user carries out list of videos by the focus in the visual field and browses, with the focus in the visual field For browsing focus, when browsing focus and exceeding preset time period at the duration that certain video file stops, it is determined that want clear for user Look at the operation of this video file.When confirming the operation that above-mentioned user browses video file, output is contracted by thumbnail generating apparatus Sketch map, thumbnail the display position user on video file can arrange voluntarily or be arranged by manager, does not limits System.
On the basis of first embodiment, Fig. 3 shows the second embodiment that the embodiment of the present invention provides, described according to preset Time point generates picture and includes:
S01, obtains the identification information of video file, and judges whether described identification information is to have play mark, the most then Obtain the time point comprised in described identification information, generate picture with described time point for preset time point.
In the present embodiment, setting video file and be provided with identification information, this identification information is in order to characterize this video file The most play by user.Thumbnail generating apparatus, before generating picture, first obtains the identification information of video file, such as this Flag information shows that this video file had been viewed by a user, then will extract the time point comprised in this identification information, This time point represents the positional information that user has watched the most, as user has play video C before this, and watches video C's At 65 point 04, then time of comprising in identification information click on be 65 points 04 second, thumbnail generating apparatus by according to 65 points 04 second Time point, from video C, the video pictures of this time point of sectional drawing generates picture, and carries out follow-up step.In the present embodiment, first Obtain the identification information regeneration picture of video file, it is possible to generate thumbnail, to facilitate user according to the viewing record of user The memory watching this video before this is aroused by this thumbnail.
On the basis of first embodiment, the invention provides the 4th embodiment as shown in Figure 4, the described figure of described judgement Whether sheet meets preset picture standard, if meeting, is then included as final thumbnail by described picture:
S21, travels through described picture, obtains the rgb value of each pixel of described picture
Because picture is made up of different pixels, such as resolution is the picture of 1280*720, and this picture is by 1280 × 720=921600 pixel composition, each pixel in picture is by three kinds of color compositions of RGB (RGB).At this In step, travel through picture, to obtain the rgb value of each pixel in picture.
S22, obtains R [h] [w] array, G [h] [w] array and B [h] [w] array, institute according to the rgb value of each pixel Stating h and represent the height of described picture, w represents the width of described picture.
In this step, according to the rgb value of each pixel, three number groups of acquisition are R [h] [w], G [h] [w] respectively With B [h] [w].
S23, calculates described R [h] [w] array, G [h] [w] array and the variance of B [h] [w] array, by calculated side Difference compares with preset variance yields.
Because for picture, the simplest picture, the variance yields calculated is the least, the most complicated picture, calculates Variance yields the biggest, such as to black or pure white picture, the variance yields of the RGB of its pixel is 0.In this step, in advance Variance yields is first set, calculated variance yields is compared with preset variance yields.
S24, if described calculated variance yields is more than described preset variance yields, then using described picture as final Thumbnail.
The present embodiment calculates variance yields by the RGB of each pixel in image, it is provided that a kind of concrete judgement mark Standard, whether the picture using this criterion to judge to generate meets the demand of display.When the picture generated meets preset side During difference, will be final thumbnail output with this image.User can obtain the content or letter wanted by this thumbnail Breath.
On the basis of the 3rd embodiment, present invention also offers the 4th embodiment as shown in Figure 5, described until finding Meet the picture of preset picture standard, the picture found included as final thumbnail:
S31, if reaching preset picture number, the then figure that will obtain according to the quantity of the picture of preset time interval acquisition The picture that in sheet, pixel variance yields is maximum is final thumbnail.
When the picture generated does not meets preset picture standard, in order to prevent unlimited number of generation picture from causing calculating pressure Power increases, and arranges the quantity generating picture in the present embodiment, and the picture as generated at preset time interval reaches 10 or 20 Or during other preset quantity, stoppings is continued according to time interval generation picture, then from the picture generated In, obtain the pixel variance yields of all pictures, be final thumbnail with the picture that variance yields is maximum.
Below by a specifically used example, the present embodiment is illustrated further:
Arranging preset time point is the beginning of video file, i.e. t=0s, sets interval as 2s, arranges generation picture Quantity be 10, user use in smart mobile phone install video APP browse video file, when thumbnail generating apparatus detect Touch location to user rests on the time of video file D and exceedes the preset time, during such as 1s, will determine this operation of user For browsing the operation of video file.Thumbnail generating apparatus will start the video pictures of sectional drawing video file D and generates from 0s One pictures, and after judging that the first pictures does not meets preset picture standard, intercept the video pictures of video file D from 2s Generate the second pictures, equally after judging that the second pictures does not meets preset picture standard, continue to intercept video from 4s The video pictures of file D is as the 3rd pictures and continues to judge, is judging that the 3rd pictures does not still meet preset picture After standard, generate picture by continuing according to preset interval, until generating the tenth pictures still do not meet preset picture mark After standard, stopping is generated picture.Thumbnail generating apparatus is maximum by finding pixel variance yields from ten pictures generated Picture, such as the 6th pictures, as final thumbnail.
On the basis of above-described embodiment, present invention also offers the 5th embodiment as shown in Figure 6, described thumbnail obtains Access method also includes:
S4, clicks on the operation of thumbnail in response to user, with time point corresponding to described thumbnail as starting point, commences play out Video file.
In order to enrich the viewing experience of user, in the present embodiment, when user clicks on the thumbnail of display, thumbnail generates The time point corresponding according to this thumbnail is starting point by device, commences play out video file.Because in actual applications, for this Before play by user, or the video file do not play by user, its preset time point could be arranged to different, as not by User play video file, its preset time point can be the sart point in time of video file, or start former seconds or First tens seconds, and the most play for user but do not play complete video file, its preset time point can be the most The time point play.When user clicks on thumbnail, thumbnail generating apparatus just can be according to time point corresponding to this thumbnail Commence play out video file.Certainly, in actual applications, when the operation that user clicks on thumbnail being detected, thumbnail generates Device can skip the ad content of this video file beginning or the insignificant direct playing video file of head content automatically Positive etc., do not limit.
A kind of reduced graph generating method that the above embodiment of the present invention provides, by generating this video according to preset time point The picture of file, and after judging that picture meets preset picture standard, just ultimately generate thumbnail.Because generating at thumbnail During first judged, thus there is black in the thumbnail avoiding generation, the situation of pure white or other information produces, and makes User can obtain the information wanting to understand from the thumbnail generated.
Present invention also offers the 7th embodiment as shown in Figure 7, a kind of thumbnail generating apparatus, it is characterised in that bag Include:
Signal generating unit 1, for generating picture according to preset time point.
When there are video file on equipment mobile terminal or other support video-sees being detected, or user uses Mobile terminal or other are when supporting the operation of equipment browse video file of video-sees, signal generating unit 1 will be according to preset time Point generates picture.Specifically, for no service condition, as user use desktop computer, notebook computer, mobile terminal or The foradownloaded video such as intelligent television, when being stored in video file, signal generating unit 1 will generate picture according to preset time point;As worked as user Use smart mobile phone, desktop computer, notebook, VR (Virtual Reality, virtual reality) equipment or intelligent television, pass through Video APP viewing video or open file management application and browse video file list, when detecting that user browses video file Operation time, signal generating unit 1 will according to preset time point generate picture.Generate picture according to preset time point, refer to generate Unit 1 intercepts corresponding picture according to this preset time point at video file, as represented preset time point, then signal generating unit 1 with t The video pictures of the t intercepting video file generates picture.During specifically used, as user is using Android system (Android), during terminal, it is stored in video file, or when using the terminal of Android system (Android) to carry out video tour, Signal generating unit 1 can use Android standard api to obtain the picture of time point t.
Judging unit 2, for judging whether described picture meets preset picture standard, if meeting, then by described picture As final thumbnail.
The picture generated signal generating unit 1 according to the picture standard pre-set is judged by judging unit 2, if sentenced The picture that disconnected signal generating unit 1 generates meets preset picture standard, then using this picture as final thumbnail, preset picture Standard can be configured according to actual application standard, as greater clarity represent this video literary composition with thumbnail The particular content of part, can set the picture that signal generating unit 1 generates and must be fulfilled for colorfulness and reach certain value, or saturation reaches During to certain value, just judge that this picture meets preset picture standard.User can be configured according to actual needs, the most not Limit.
Cycling element 3, if for not meeting, then generating next picture according to preset time interval, and continue executing with judgement Whether next picture described meets the step of preset picture standard, until finding the picture meeting preset picture standard, and will The picture found is as final thumbnail.
If the picture that signal generating unit 1 generates does not meets preset picture format, cycling element 3 will be according to preset time interval Generate next picture.As t represents preset time point, with 1s as time interval, if cycling element 3 judges what signal generating unit 1 generated Picture is unsatisfactory for preset picture standard, and the sectional drawing video pictures on video file of the time point with t+1s is being generated picture, And continue executing with the step judging whether this picture meets preset picture standard, if the picture that t+1s time point generates is the most not Meet preset picture standard, then continue to generate picture with t+2s for time point sectional drawing video pictures on video file, until It is eventually found the picture meeting preset picture standard, using this picture as final thumbnail.
In above-described embodiment that the present invention provides, the video pictures according to preset time point sectional drawing video file is generated Picture, and judge picture, judge just can be final using this picture as contracting after this picture meets preset picture standard Sketch map is shown to user.The present embodiment judges, by preset picture standard, the picture that preset time point generates, and can meet use The relevant information of video file is known at family from the thumbnail of final display, it is to avoid show black, pure white or other are without information Thumbnail.
It should be appreciated that in the present embodiment as a example by previously generating thumbnail, at thumbnail after generation, work as detection When browsing the operation of video file or video file list to user, by this thumbnail of output.But above-described embodiment is not Just for situation about previously generating, when user watches video online, the operation of video can be browsed according to user, carry out breviary Map generalization, user uses different terminals, and the mode browsing video file list is the most different, regards as user browses in computer end During frequency file list, the roller of mouse is used to roll video file list, with the arrow of mouse for browsing focus, when browsing Jiao Point rests on the duration of certain video file and exceedes preset time period, such as 2s, it is determined that want to browse the behaviour of this video file for user Make;User is using mobile terminal, such as smart mobile phone, when browsing video file list, uses finger slip video file list, With the touch location of user for browsing focus, rest on time of certain video file exceed preset time period when detection browses focus Time, it is determined that want to browse the operation of this video file for user;For such as intelligent television etc., use the dresses such as remote controller as user Put when browsing video file list, when choice box is for browsing focus, when detecting that browsing focus rests on certain video file Between exceed preset time period, it is determined that want to browse the operation of this video file for user;Same, use the VR helmet for user Carrying out the situation of panoramic video viewing, user carries out list of videos by the focus in the visual field and browses, with the focus in the visual field For browsing focus, when browsing focus and exceeding preset time period at the duration that certain video file stops, it is determined that want clear for user Look at the operation of this video file.When confirming the operation that above-mentioned user browses video file, output is contracted by thumbnail generating apparatus Sketch map, thumbnail the display position user on video file can arrange voluntarily or be arranged by manager, does not limits System.
On the basis of sixth embodiment, the present invention also provides for the 7th embodiment as shown in Figure 8, and signal generating unit 1 includes:
Identity reading module 11, for obtaining the identification information of video file, and judges whether described identification information is Play mark, the most then obtain the time point comprised in described identification information, generate for preset time point with described time point Figure.
In the present embodiment, setting video file and be provided with identification information, this identification information in order to characterize this video file is No play by user.Identity reading module 11, before generating picture, first obtains the identification information of video file, such as this mark Will information shows that this video file had been viewed by a user, then will extract the time point comprised in this identification information, should Time point represents the positional information that user has watched the most, as user has play video C before this, and watches the 65 of video C At point 04, then the time comprised in identification information click on be 65 points 04 second, identity reading module 11 by according to 65 points 04 second time Between point, from video C, the video pictures of this time point of sectional drawing generates picture, and carries out follow-up step.In the present embodiment, first obtain Take the identification information regeneration picture of video file, it is possible to generate thumbnail according to the viewing record of user, to facilitate user to lead to Cross this thumbnail and arouse the memory watching this video before this.
On the basis of sixth embodiment, present invention also offers the 8th embodiment as shown in Figure 9, it is judged that unit 2 wraps Include:
Pixel spider module 21, is used for traveling through described picture, obtains the rgb value of each pixel of described picture.
Because picture is made up of different pixels, such as resolution is the picture of 1280*720, and this picture is by 1280 × 720=921600 pixel composition, each pixel in picture is by three kinds of color compositions of RGB (RGB).At this In step, pixel spider module 21 travels through picture, to obtain the rgb value of each pixel in picture.
Array acquisition module 22, for according to the rgb value of each pixel obtain R [h] [w] array, G [h] [w] array and B [h] [w] array, described h represents the height of described picture, and w represents the width of described picture.
Array acquisition module 22 is according to the rgb value of each pixel, and three number groups of acquisition are R [h] [w], G [h] respectively [w] and B [h] [w].
Variance computing module 23, is used for calculating described R [h] [w] array, G [h] [w] array and the side of B [h] [w] array Difference, compares calculated variance yields with preset variance yields.
Because for picture, the simplest picture, the variance yields calculated is the least, the most complicated picture, calculates Variance yields the biggest, such as to black or pure white picture, the variance yields of the RGB of its pixel is 0.In this step, in advance First arranging variance yields, calculated variance yields is compared by variance computing module 23 with preset variance yields.
Variance comparison module 24, if for described calculated variance yields more than described preset variance yields, then by institute State picture as final thumbnail.
The present embodiment calculates variance yields by the RGB of each pixel in image, it is provided that a kind of concrete judgement mark Standard, whether the picture using this criterion to judge to generate meets the demand of display.When the picture generated meets preset side During difference, will be final thumbnail output with this image.User can obtain the content or letter wanted by this thumbnail Breath.
On the basis of the 8th embodiment, present invention also offers the 9th embodiment as shown in Figure 10, cycling element bag Include:
Quantity comparison module 31, if the quantity of the picture for obtaining according to preset time interval reaches preset picture number Amount, then the picture that in the picture that will obtain, pixel variance yields is maximum is final thumbnail.
When the picture generated does not meets preset picture standard, in order to prevent unlimited number of generation picture from causing calculating pressure Power increases, and arranges the quantity generating picture, quantity comparison module 31 such as the picture generated at preset time interval in the present embodiment Reach 10 or 20 or during other preset quantity, continue stopping to generate picture, then from according to time interval In picture through generating, obtain the pixel variance yields of all pictures, be final thumbnail with the picture that variance yields is maximum.
On the basis of above-described embodiment, present invention also offers the tenth embodiment as shown in figure 11, described thumbnail Acquisition device also includes:
Broadcast unit 4, for clicking on the operation of thumbnail in response to user, with time point corresponding to described thumbnail for Point, commences play out video file.
In order to enrich the viewing experience of user, in the present embodiment, when user clicks on the thumbnail of display, broadcast unit 4 It is starting point by the time point corresponding according to this thumbnail, commences play out video file.Because in actual applications, for the most Play by user, or the video file do not play by user, its preset time point could be arranged to different, as not by user The video file play, its preset time point can be the sart point in time of video file, or former seconds or former of beginning Ten seconds, and the most play for user but do not play complete video file, its preset time point can be the most to play Time point.When user clicks on thumbnail, broadcast unit 4 just can commence play out according to the time point that this thumbnail is corresponding and regard Frequency file.Certainly, in actual applications, when the operation that user clicks on thumbnail being detected, broadcast unit 4 can be skipped automatically The ad content of this video file beginning or the positive etc. of the insignificant direct playing video file of head content, do not do Limit.
The reduced graph generating method that the embodiment of the present invention provides, can be applicable to include smart mobile phone, panel computer, individual number Word assistant (PDA, Personal Digital Assistant), vehicle-mounted computer, intelligent television, desktop computer etc. can carry out video In the terminal play.
This terminal includes: one or more processor, memorizer and one or more program (module).Wherein should One or more program (module) is stored in this memorizer, when being performed by this one or more processor, and this process Device operates below performing:
Picture is generated according to preset time point;
Judge whether described picture meets preset picture standard, if meeting, then using described picture as final breviary Figure;
If not meeting, then generate next picture according to preset time interval, and continue executing with judgement next picture described and be The no step meeting preset picture standard, until finding the picture meeting preset picture standard, makees the picture found For final thumbnail.
The embodiment of the present invention by obtain picture judge, when being judged as meeting preset picture standard again with Thumbnail form exports, it is to avoid the thumbnail of output is black figure or the problem of the picture without other information, and user can The content wanting to understand is known from the thumbnail of inventive embodiments output.
In several embodiments provided herein, it should be understood that disclosed apparatus and method, can be passed through it Its mode realizes.Such as, device embodiment described above is only schematically, such as, and the division of described module, only Being only a kind of logic function to divide, actual can have other dividing mode, the most multiple modules or assembly to tie when realizing Close or be desirably integrated into another system, or some features can be ignored, or not performing.Another point, shown or discussed Coupling each other or direct-coupling or communication connection can be the INDIRECT COUPLING by some interfaces, device or module or logical Letter connects, and can be electrical, machinery or other form.
The described module illustrated as separating component can be or may not be physically separate, shows as module The parts shown can be or may not be physical module, i.e. may be located at a place, or can also be distributed to multiple On mixed-media network modules mixed-media.Some or all of module therein can be selected according to the actual needs to realize the mesh of the present embodiment scheme 's.
It addition, each functional module in each embodiment of the present invention can be integrated in a processing module, it is also possible to It is that modules is individually physically present, it is also possible to two or more modules are integrated in a module.Above-mentioned integrated mould Block both can realize to use the form of hardware, it would however also be possible to employ the form of software function module realizes.
If described integrated module realizes and as independent production marketing or use using the form of software function module Time, can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially The part that in other words prior art contributed or this technical scheme completely or partially can be with the form of software product Embodying, this computer software product is stored in a storage medium, including some instructions with so that a computer Equipment (can be personal computer, server, or the network equipment etc.) performs the complete of method described in each embodiment of the present invention Portion or part steps.And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey The medium of sequence code.
It should be noted that for aforesaid each method embodiment, in order to simplicity describes, therefore it is all expressed as a series of Combination of actions, but those skilled in the art should know, the present invention is not limited by described sequence of movement because According to the present invention, some step can use other order or carry out simultaneously.Secondly, those skilled in the art also should know Knowing, it might not be all this that embodiment described in this description belongs to preferred embodiment, involved action and module Bright necessary.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and does not has the portion described in detail in certain embodiment Point, may refer to the associated description of other embodiments.
It is more than the description to reduced graph generating method provided by the present invention and thumbnail generating apparatus, for this area Technical staff, according to the thought of the embodiment of the present invention, the most all will change, combine On, this specification content should not be construed as limitation of the present invention.

Claims (10)

1. a reduced graph generating method, it is characterised in that including:
Picture is generated according to preset time point;
Judge whether described picture meets preset picture standard, if meeting, then using described picture as final thumbnail;
If not meeting, then generate next picture according to preset time interval, and continue executing with whether judgement next picture described accords with Close the step of preset picture standard, until finding the picture meeting preset picture standard, using the picture that finds as Whole thumbnail.
2. reduced graph generating method as claimed in claim 1, it is characterised in that described according to preset time point generation picture bag Include:
Obtain the identification information of video file, and judge whether described identification information is to have play mark, the most then obtain described The time point comprised in identification information, generates picture with described time point for preset time point.
3. reduced graph generating method as claimed in claim 1, it is characterised in that described to judge whether described picture meets preset Picture standard, if meeting, then described picture is included as final thumbnail:
Travel through described picture, obtain the rgb value of each pixel of described picture;
Rgb value according to each pixel obtains R [h] [w] array, G [h] [w] array and B [h] [w] array, and described h represents institute Stating the height of picture, w represents the width of described picture;
Calculate described R [h] [w] array, G [h] [w] array and the variance of B [h] [w] array, by calculated variance yields with pre- The variance yields put compares;
If described calculated variance yields is more than described preset variance yields, then using described picture as final thumbnail.
4. reduced graph generating method as claimed in claim 3, it is characterised in that described until finding and meeting preset picture mark Accurate picture, includes the picture found as final thumbnail:
If reaching preset picture number, then pixel in the picture that will obtain according to the quantity of the picture of preset time interval acquisition The picture of variance yields maximum is final thumbnail.
5. the reduced graph generating method as described in Claims 1-4 is arbitrary, it is characterised in that described thumbnail acquisition methods is also Including:
Click on the operation of thumbnail in response to user, with time point corresponding to described thumbnail as starting point, commence play out video literary composition Part.
6. a thumbnail generating apparatus, it is characterised in that including:
Signal generating unit, for generating picture according to preset time point;
Judging unit, for judging whether described picture meets preset picture standard, if meeting, then using described picture as Whole thumbnail;
Cycling element, if for not meeting, then generates next picture according to preset time interval, and continue executing with judge described under Whether one picture meets the step of preset picture standard, until finding the picture meeting preset picture standard, will find Picture as final thumbnail.
7. thumbnail generating apparatus as claimed in claim 6, it is characterised in that described signal generating unit includes:
Identity reading module, for obtaining the identification information of video file, and judges whether described identification information is to have play mark Know, the most then obtain the time point comprised in described identification information, generate figure with described time point for preset time point.
8. thumbnail generating apparatus as claimed in claim 6, it is characterised in that described judging unit includes:
Pixel spider module, is used for traveling through described picture, obtains the rgb value of each pixel of described picture;
Array acquisition module, for obtaining R [h] [w] array, G [h] [w] array and B [h] according to the rgb value of each pixel [w] array, described h represents the height of described picture, and w represents the width of described picture;
Variance computing module, is used for calculating described R [h] [w] array, G [h] [w] array and the variance of B [h] [w] array, will meter The variance yields obtained compares with preset variance yields;
Variance comparison module, if for described calculated variance yields more than described preset variance yields, then by described picture As final thumbnail.
9. thumbnail generating apparatus as claimed in claim 8, it is characterised in that described cycling element includes:
Quantity comparison module, if the quantity of the picture for obtaining according to preset time interval reaches preset picture number, then will The picture that in the picture obtained, pixel variance yields is maximum is final thumbnail.
10. the thumbnail generating apparatus as described in claim 6 to 9 is arbitrary, it is characterised in that described thumbnail acquisition device is also Including:
Broadcast unit, for clicking on the operation of thumbnail in response to user, with time point corresponding to described thumbnail as starting point, opens Beginning playing video file.
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