CN104768029A - Station caption detection method and digital television terminal - Google Patents
Station caption detection method and digital television terminal Download PDFInfo
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- CN104768029A CN104768029A CN201510124483.0A CN201510124483A CN104768029A CN 104768029 A CN104768029 A CN 104768029A CN 201510124483 A CN201510124483 A CN 201510124483A CN 104768029 A CN104768029 A CN 104768029A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing 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
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4334—Recording operations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-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
- H04N21/47205—End-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 manipulating displayed content, e.g. interacting with MPEG-4 objects, editing locally
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Abstract
The embodiment of the invention discloses a station caption detection method. The method includes the steps of obtaining a video picture image, obtaining position information of a station caption corresponding to the video picture image, obtaining a to-be-recognized image corresponding to the position information from the video picture image, obtaining characteristic information of the station caption corresponding to the video picture image, conducting matching on the to-be-recognized image according to the characteristic information, and obtaining the matching result. The embodiment of the invention further discloses a digital television terminal. By means of the method and the digital television terminal, the error rate is decreased when the station caption is detected through the digital television terminal, and the station caption detection accuracy is improved.
Description
Technical field
The present invention relates to digital television techniques, particularly relate to a kind of station caption detection method and digital TV terminal.
Background technology
Along with the develop rapidly of TV tech, the program of TV station at different levels reaches cover up to a hundred.And the department that monitors carries out monitoring in real time preventing from illegally being intercutted or disturbing in television program transmission process to TV signal, when ensureing the legitimate rights and interests of TV station, by manually carrying out Real-Time Monitoring broadcasting signal state mostly, but this makes staff's working strength large, inefficiency, and it is not high to monitor accuracy.
TV station's station symbol is the important symbol of TV station, and at present, in the TV signal of legal broadcast, picture is all with station symbol, and it has become one of semantic information important in content-based multimedia retrieval.Therefore, based on station symbol, Real-Time Monitoring is carried out to TV programme, also become the means of at present TV signal being monitored.
But, existing based on station caption detection method normally based on continuous print frame of video, the change of pixel in time-domain, that is, the method hypothesis video content becoming always, only have station symbol to be constant region.But, when change of background is very little, existing with regard to technology may by change very little region be mistaken for station symbol and detect, this will cause station symbol detection mistake.And, popular along with Network TV Station, film source complexity is various, if some broadcasting channel writes certain TV station, but the TV programme of the TV programme Que Shi another one TV station of actual play, and prior art only just detects that station symbol is legal, but cannot detect play content and broadcasting channel inconsistent.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, provides station caption detection method and digital TV terminal.The accuracy rate improving station symbol and detect can be detected.
In order to solve the problems of the technologies described above, embodiments provide a kind of station caption detection method, comprising:
Obtain video pictures image;
Obtain the positional information of station symbol corresponding to described video pictures image, described video pictures image obtains the image to be identified that described positional information is corresponding;
Obtain the characteristic information of station symbol corresponding to described video pictures image, according to described characteristic information, described image to be identified is mated, obtain matching result.
Wherein, described acquisition video pictures image comprises:
Sectional drawing is carried out to the video pictures of current broadcasting, obtains video pictures image;
Gray proces is carried out to described video pictures image, generates the gray-scale map of described video pictures image.
Wherein, the positional information of the station symbol that described acquisition described video pictures image is corresponding, comprises before described video pictures image obtains image to be identified corresponding to described positional information:
The positional information of the station symbol that preset described video pictures image is corresponding and characteristic information, wherein, described positional information comprises the position of the station symbol of specifying and/or the size of station symbol, described characteristic information comprises at least one preset characteristic image, and described characteristic image is the characteristic image of the station symbol that described video pictures image is corresponding.
Wherein, the positional information of the station symbol that described acquisition described video pictures image is corresponding, the image to be identified described video pictures image obtaining described positional information corresponding comprises:
Obtain the positional information of station symbol corresponding to described video pictures image, described gray-scale map obtains the image to be identified that described positional information is corresponding.
Wherein, the characteristic information of the station symbol that described acquisition described video pictures image is corresponding, mates described image to be identified according to described characteristic information, obtains matching result and comprises:
Described at least one characteristic image is mated one by one with described image to be identified, obtains the number with the characteristic image of described images match to be identified;
Judge whether described number meets preset condition;
When described number meets pre-conditioned, determine that matching result is that described video pictures image comprises station symbol corresponding to described video pictures image.
Correspondingly, the embodiment of the present invention additionally provides a kind of digital TV terminal, comprising:
First acquiring unit, for obtaining video pictures image;
Second acquisition unit, for obtaining the positional information of station symbol corresponding to described video pictures image, described video pictures image obtains the image to be identified that described positional information is corresponding;
Matching unit, for obtaining the characteristic information of station symbol corresponding to described video pictures image, mates described image to be identified according to described characteristic information, obtains matching result.
Wherein, described first acquiring unit comprises:
Sectional drawing subelement, for carrying out sectional drawing to the video pictures of current broadcasting, obtains video pictures image;
Process subelement, for carrying out gray proces to described video pictures image, generates the gray-scale map of described video pictures image.
Wherein, described terminal comprises:
Preset unit, for positional information and the characteristic information of station symbol corresponding to preset described video pictures image, wherein, described positional information comprises the position of the station symbol of specifying and/or the size of station symbol, described characteristic information comprises at least one preset characteristic image, and described characteristic image is the characteristic information of the station symbol that described video pictures image is corresponding.。
Wherein, described second acquisition unit specifically for,
Obtain the positional information of station symbol corresponding to described video pictures image, described gray-scale map obtains the image to be identified that described positional information is corresponding.
Wherein, described matching unit comprises:
Coupling subelement, for being mated one by one with described image to be identified by described at least one characteristic image, obtains the number with the characteristic image of described images match to be identified;
Judgment sub-unit, for judging whether described number meets preset condition;
Determine subelement, when judging that described number meets preset condition for described judgment sub-unit, determine that matching result is that described video pictures image comprises station symbol corresponding to described video pictures image.
Implement the embodiment of the present invention, there is following beneficial effect:
The embodiment of the present invention is by obtaining video pictures image, obtain the positional information of station symbol corresponding to described video pictures image, described video pictures image obtains the image to be identified that described positional information is corresponding, obtain the characteristic information of station symbol corresponding to described video pictures image, described image to be identified is mated, obtains matching result.This can reduce digital TV terminal monitor station target error rate, improves the accuracy rate that station symbol detects.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the first embodiment schematic flow sheet of a kind of station caption detection method of the present invention;
Fig. 2 is the first example structure figure of a kind of digital TV terminal of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In the embodiment of the present invention, digital TV terminal can be digital TV set-top box, and digital TV integrated machine, network video player etc. possess equipment that is unidirectional or bi-directional digital television function.
Please refer to Fig. 1, is first embodiment flow chart of a kind of station caption detection method of the present invention.Executive agent of the present invention can be digital TV terminal.As shown in Figure 1, a kind of station caption detection method described in the present embodiment comprises step:
S100, obtains video pictures image.
In embodiments of the present invention, digital TV terminal can obtain one or more video pictures image.Wherein, digital TV terminal can be play successfully in TV programme, sectional drawing is carried out to obtain video pictures image to the successful TV programme of current broadcasting, or digital TV terminal can carry out sectional drawing to obtain video pictures image to the TV programme of current broadcasting on preset time point.Wherein, digital TV terminal can carry out sectional drawing to whole broadcasting pictures, or carries out sectional drawing to upper part broadcasting pictures, or carries out sectional drawing etc. to the broadcasting pictures of left half, and the particular location of sectional drawing does not limit at this.Further, digital TV terminal the preset fixing sectional drawing time interval and total sectional drawing time can intercept multiple video pictures images.Such as: digital TV terminal presetly can carry out sectional drawing every 800ms to the TV programme of current broadcasting, obtains multiple video pictures images.When total sectional drawing time meets preset total sectional drawing time, digital TV terminal stops carrying out sectional drawing.Wherein, total sectional drawing time can be that user is arranged by user interface.
In embodiments of the present invention, when digital TV terminal gets video pictures image, digital TV terminal can carry out gray proces to the video pictures image got, and obtains the gray-scale map of video pictures image.Wherein, gray-scale map can be more conducive to digital TV terminal and carry out image procossing, and the processing procedure of digital TV terminal can be made quick, simply.Wherein, digital TV terminal carries out gray proces to the video pictures image got: suppose that digital TV terminal gets N and opens video pictures image, digital TV terminal obtains the colouring information that N opens each pixel of video pictures image, such as: the colouring information HSV (Hue, the Saturation that obtain certain pixel, Value, tone, saturation, brightness) be (60 °, 0.5,112).After digital TV terminal gets the colouring information of each pixel, digital TV terminal obtains the monochrome information V of N number of pixel corresponding on each pixel position on video pictures image, and the monochrome information of N number of pixel corresponding for each pixel position is carried out being added with default value SUM1 and obtain SUM2.Further, digital TV terminal carries out averaging AVG to SUM2, wherein, and AVG=SUM2/N.After digital TV terminal obtains average AVG, digital TV terminal can carry out calculating variance to the colouring information of N number of pixel corresponding to each pixel position, and acquisition variance value is VAR.When the variance value VAR of N number of pixel corresponding to pixel position is less than or equal to default value, digital TV terminal is using color data corresponding as this pixel position for average AVG corresponding for this pixel position, when the variance value VAR of N number of pixel corresponding to pixel position is greater than default value, digital TV terminal is using 0 color data corresponding as this pixel position.According to above mode, digital TV terminal can obtain the color data corresponding to each pixel position, thus generates a gray-scale map.
S101, obtains the positional information of station symbol corresponding to described video pictures image, and described video pictures image obtains the image to be identified that described positional information is corresponding.
In embodiments of the present invention, digital TV terminal can preset target positional information, and wherein, the positional information of station symbol can be the position of the station symbol that user specifies and/or the size of station symbol.Wherein, the size of the user position and/or station symbol of carrying out the station symbol of specifying can be: user can carry out intercepting video image on one section of station symbol clearly video.Digital TV terminal can load this video image and carry out gray proces, generates the gray-scale map of this video image and is shown by display screen.After digital TV terminal is shown by display screen, user is by button or drag mouse selection station symbol region, and after user has confirmed station symbol region, digital TV terminal can preserve the size in user-selected position and selected region.Wherein, digital TV terminal can preserve user-selected coordinate, it can be used as the position of user-selected station symbol.Further, because user can know the TV programme of the TV station corresponding to each channel in advance, therefore after user to preset the positional information of station symbol by digital TV terminal, user goes back the corresponding relation that install beforehand plays the channel of the TV programme of this station symbol and the positional information of this station symbol.We are understandable that, are namely that user is prefixed the corresponding relation carrying out the positional information of video pictures image and this station symbol play at this channel.Digital TV terminal can preserve the preset corresponding relation of user.
In embodiments of the present invention, after digital TV terminal obtains the gray-scale map of video pictures image, digital TV terminal can according to the corresponding relation of channel with the position of station symbol, obtains the positional information of station symbol corresponding to the channel of the described video pictures image of broadcasting.Further, digital TV terminal can obtain image to be identified corresponding to the positional information of station symbol on gray-scale map.Wherein, the size of image to be identified is identical with position with the size of preset station symbol with position.
S102, obtains the characteristic information of station symbol corresponding to described video pictures image, mates described image to be identified according to described characteristic information, obtains matching result.
In embodiments of the present invention, digital TV terminal can preset target characteristic information, and wherein, characteristic information can be preset at least one the characteristic image of user, and this characteristic image is the characteristic image of the station symbol that video pictures image is corresponding.Wherein, at least one preset characteristic image detailed process can be: user can comprise station symbol corresponding to video pictures image at one section, and station symbol clearly video carries out intercepting video image.Digital TV terminal can load this video image and carry out gray proces, generates the gray-scale map of this video image and is shown by display screen.After digital TV terminal is shown by display screen, user is by button or drag mouse selection station symbol region, and after user has confirmed station symbol region, digital TV terminal can preserve the size in user-selected position and selected region.Wherein, digital TV terminal can preserve user-selected coordinate, it can be used as the position of user-selected station symbol.Further, after user has confirmed station symbol region, user also can in station symbol region by button or drag mouse and select at least one place characteristic area, and wherein, this characteristic area can be that user thinks the viewing area that station symbol is exclusive.After user has confirmed characteristic area, digital TV terminal can preserve the image of user-selected characteristic area, simultaneously, digital TV terminal can by the Computer image genration configuration file of the position of the station symbol specified by user and/or the size of station symbol and the characteristic area of station symbol, because user can know the TV programme of the TV station corresponding to each channel in advance, therefore when after digital TV terminal generating configuration file, user goes back the channel of TV programme and the corresponding relation of this configuration file of this this station symbol of broadcasting of install beforehand.We are understandable that, are namely the corresponding relations that user is preset at video pictures image that this channel carries out playing and configuration file.
In embodiments of the present invention, after digital TV terminal gets image to be identified, digital TV terminal can obtain the characteristic information playing station symbol corresponding to described video pictures channel.And treat recognition image according to characteristic information and mate, obtain matching result, wherein, matching result can be whether video pictures image comprises station symbol corresponding to video pictures image.Concrete, at least one characteristic image mates with image to be identified by data television terminal one by one, obtains the number with the characteristic image of images match to be identified.Wherein, digital TV terminal can adopt image recognition algorithm to be mated with image to be identified by characteristic image.Further, when digital TV terminal obtains the number with the characteristic image of images match to be identified, digital TV terminal can judge whether obtained number meets preset condition, and wherein, preset condition can be more than or equal to certain default value.When digital TV terminal judges that the number obtained meets pre-conditioned, namely can be number when being more than or equal to preset numerical value, digital TV terminal can confirm that matching result is that video pictures image comprises the station symbol corresponding with video pictures image.When digital TV terminal judges that the number obtained is not content with prerequisite, namely can be that number is when being less than preset numerical value, digital TV terminal can determine that matching result is that video pictures image does not comprise station symbol corresponding to video pictures image, or whether uncertain video pictures image comprises station symbol corresponding to video pictures image, and this matching result is uploaded to management end, to make administrative staff make corresponding process, such as: administrative staff can check whether video pictures image comprises station symbol corresponding to video pictures image.Wherein, digital TV terminal judges whether the number obtained meets pre-conditioned can be that digital TV terminal judges whether obtained number is greater than the half of the number of characteristic image.In a particular application, can such as: when preset characteristic information comprises 6 characteristic images, then pre-conditioned can be greater than 3 with the number of the characteristic image of images match to be identified.Namely, when 6 characteristic images mate with image to be identified by digital TV terminal one by one, when digital TV terminal acquisition is 4 with the number of the special image of images match to be identified, digital TV terminal can judge that 4 greatly in 3, then digital TV terminal can determine that matching result is that described video pictures image comprises station symbol corresponding to described video pictures image.Thus determine that video pictures image comprises corresponding icon, it is normal that channel plays TV programme.
The embodiment of the present invention is by obtaining video pictures image, obtain the positional information of station symbol corresponding to described video pictures image, described video pictures image obtains the image to be identified that described positional information is corresponding, obtain the characteristic information of station symbol corresponding to described video pictures image, described image to be identified is mated, obtains matching result.This can reduce digital TV terminal monitor station target error rate, improves the accuracy rate that station symbol detects.
Please refer to Fig. 2, is first embodiment flow chart of a kind of digital TV terminal of the present invention.As shown in Figure 2, a kind of digital TV terminal described in the present embodiment comprises as lower unit:
Preset unit 100, for positional information and the characteristic information of station symbol corresponding to preset described video pictures image, wherein, described positional information comprises the position of the station symbol of specifying and/or the size of station symbol, and described characteristic information comprises at least one the characteristic image of specifying.
First acquiring unit 200, for obtaining video pictures image.
Second acquisition unit 300, for obtaining the positional information of station symbol corresponding to described video pictures image, described video pictures image obtains the image to be identified that described positional information is corresponding.
Matching unit 400, for obtaining the characteristic information of station symbol corresponding to described video pictures image, mates described image to be identified according to described characteristic information, obtains matching result.
Wherein, above-mentioned first acquiring unit 200 specifically for:
Sectional drawing is carried out to the video pictures of current broadcasting, obtains video pictures image;
Gray proces is carried out to described video pictures image, generates the gray-scale map of described video pictures image.
Wherein, above-mentioned second acquisition unit 300 specifically for:
Obtain the positional information of station symbol corresponding to described video pictures image, described gray-scale map obtains the image to be identified that described positional information is corresponding.
Wherein, above-mentioned matching unit 400 specifically for:
Described at least one characteristic image is mated one by one with described image to be identified, obtains the number with the characteristic image of described images match to be identified;
Judge whether described number meets preset condition;
When described number meets pre-conditioned, determine that matching result is that described video pictures image comprises station symbol corresponding to described video pictures image.
In embodiments of the present invention, the first acquiring unit 200 can obtain one or more video pictures image.Wherein, first acquiring unit 200 can be play successfully in TV programme, sectional drawing is carried out to obtain video pictures image to the successful TV programme of current broadcasting, or the first acquiring unit 200 can carry out sectional drawing to obtain video pictures image to the TV programme of current broadcasting on preset time point.Wherein, the first acquiring unit 200 can carry out sectional drawing to whole broadcasting pictures, or carries out sectional drawing to upper part broadcasting pictures, or carries out sectional drawing etc. to the broadcasting pictures of left half, and the particular location of sectional drawing does not limit at this.Further, the first acquiring unit 200 the preset fixing sectional drawing time interval and total sectional drawing time can intercept multiple video pictures images.Such as: the first acquiring unit 200 presetly can carry out sectional drawing every 800ms to the TV programme of current broadcasting, obtains multiple video pictures images.When total sectional drawing time meets preset total sectional drawing time, the first acquiring unit 200 stops carrying out sectional drawing.Wherein, total sectional drawing time can be that user is arranged by user interface.
In embodiments of the present invention, when the first acquiring unit 200 gets video pictures image, the first acquiring unit 200 can carry out gray proces to the video pictures image got, and obtains the gray-scale map of video pictures image.Wherein, gray-scale map can be more conducive to digital TV terminal and carry out image procossing, and the processing procedure of digital TV terminal can be made quick, simply.Wherein, first acquiring unit 200 carries out gray proces to the video pictures image got: suppose that the first acquiring unit 200 gets N and opens video pictures image, first acquiring unit 200 obtains the colouring information that N opens each pixel of video pictures image, such as: the colouring information HSV (Hue, the Saturation that obtain certain pixel, Value, tone, saturation, brightness) be (60 °, 0.5,112).After the first acquiring unit 200 gets the colouring information of each pixel, first acquiring unit 200 to obtain on video pictures image the monochrome information V of N number of pixel corresponding on each pixel position, and the monochrome information of N number of pixel corresponding for each pixel position is carried out being added with default value SUM1 and obtain SUM2.Further, the first acquiring unit 200 pairs SUM2 carries out averaging AVG, wherein, and AVG=SUM2/N.After the first acquiring unit 200 obtains average AVG, the first acquiring unit 200 can carry out calculating variance to the colouring information of N number of pixel corresponding to each pixel position, and acquisition variance value is VAR.When the variance value VAR of N number of pixel corresponding to pixel position is less than or equal to default value, first acquiring unit 200 is using color data corresponding as this pixel position for average AVG corresponding for this pixel position, when the variance value VAR of N number of pixel corresponding to pixel position is greater than default value, the first acquiring unit 200 is using 0 color data corresponding as this pixel position.According to above mode, the first acquiring unit 200 can obtain the color data corresponding to each pixel position, thus generates a gray-scale map.
In embodiments of the present invention, preset unit 100 can preset target positional information, and wherein, the positional information of station symbol can be the position of the station symbol that user specifies and/or the size of station symbol.Wherein, the size of the user position and/or station symbol of carrying out the station symbol of specifying can be: user can carry out intercepting video image on one section of station symbol clearly video.Digital TV terminal can load this video image and carry out gray proces, generates the gray-scale map of this video image and is shown by display screen.After digital TV terminal is shown by display screen, user is by button or drag mouse selection station symbol region, and after user has confirmed station symbol region, preset unit 100 can preserve the size in user-selected position and selected region.Wherein, preset unit 100 can preserve user-selected coordinate, it can be used as the position of user-selected station symbol.Further, because user can know the TV programme of the TV station corresponding to each channel in advance, therefore after user to preset the positional information of station symbol by digital TV terminal, user goes back the corresponding relation that install beforehand plays the channel of the TV programme of this station symbol and the positional information of this station symbol.We are understandable that, are namely that user is prefixed the corresponding relation carrying out the positional information of video pictures image and this station symbol play at this channel.Preset unit 100 can preserve the preset corresponding relation of user.
In embodiments of the present invention, after the first acquiring unit 200 obtains the gray-scale map of video pictures image, second acquisition unit 300 can according to the corresponding relation of the positional information of channel and station symbol, obtains the positional information of station symbol corresponding to video pictures image that the first acquiring unit 200 gets.Further, second acquisition unit 300 can obtain image to be identified corresponding to the positional information of station symbol on gray-scale map.Wherein, the size of image to be identified is identical with position with the size of preset station symbol with position.
In embodiments of the present invention, preset unit 100 can preset target characteristic information, and wherein, characteristic information can be preset at least one the characteristic image of user, and this characteristic image is the characteristic image of the station symbol that video pictures image is corresponding.Wherein, at least one preset characteristic image detailed process can be: user can comprise station symbol corresponding to video pictures image at one section, and station symbol clearly video carries out intercepting video image.Digital TV terminal can load this video image and carry out gray proces, generates the gray-scale map of this video image and is shown by display screen.After digital TV terminal is shown by display screen, user is by button or drag mouse selection station symbol region, and after user has confirmed station symbol region, preset unit 100 can preserve the size in user-selected position and selected region.Wherein, preset unit 100 can preserve user-selected coordinate, it can be used as the position of user-selected station symbol.Further, after user has confirmed station symbol region, user also can in station symbol region by button or drag mouse and select at least one place characteristic area, and wherein, this characteristic area can be that user thinks the viewing area that station symbol is exclusive.After user has confirmed characteristic area, preset unit 100 can preserve the image corresponding to user-selected characteristic area, simultaneously, number preset unit 100 can by the Computer image genration configuration file corresponding to the position of the station symbol specified by user and/or the size of station symbol and the characteristic area of station symbol, because user can know the TV programme of the TV station corresponding to each channel in advance, therefore when after digital TV terminal generating configuration file, user goes back the channel of TV programme and the corresponding relation of this configuration file of this this station symbol of broadcasting of install beforehand.We are understandable that, are namely the corresponding relations that user is preset at video pictures image that this channel carries out playing and configuration file.Preset unit 100 can preserve the preset corresponding relation of user.
In embodiments of the present invention, after second acquisition unit 300 gets image to be identified, matching unit 400 can obtain the characteristic information playing station symbol corresponding to described video pictures channel.And treat recognition image according to characteristic information and mate, obtain matching result, wherein, matching result can be whether video pictures image comprises station symbol corresponding to video pictures image.Concrete, at least one characteristic image mates with image to be identified by matching unit 400 one by one, obtains the number with the characteristic image of images match to be identified.Wherein, matching unit 400 can adopt image recognition algorithm to be mated with image to be identified by characteristic image.Further, when matching unit 400 obtains the number with the characteristic image of images match to be identified, matching unit 400 can judge whether obtained number meets preset condition, and wherein, preset condition can be more than or equal to certain default value.When matching unit 400 judges that the number obtained meets pre-conditioned, namely can be number when being more than or equal to preset numerical value, matching unit 400 can confirm that matching result is that video pictures image comprises the station symbol corresponding with video pictures image.When digital TV terminal judges that the number obtained is not content with prerequisite, namely can be that number is when being less than preset numerical value, matching unit 400 can determine that matching result is that video pictures image does not comprise station symbol corresponding to video pictures image, or whether uncertain video pictures image comprises station symbol corresponding to video pictures image, and this matching result is uploaded to management end, to make administrative staff make corresponding process, such as: administrative staff can check whether video pictures image comprises station symbol corresponding to video pictures image.Wherein, matching unit 400 judges whether the number obtained meets pre-conditioned can be that matching unit 400 judges whether obtained number is greater than the half of the number of characteristic image.In a particular application, can such as: when preset characteristic information comprises 6 characteristic images, then pre-conditioned can be greater than 3 with the number of the characteristic image of images match to be identified.Namely, when 6 characteristic images mate with image to be identified by matching unit 400 one by one, when matching unit 400 acquisition is 4 with the number of the special image of images match to be identified, matching unit 400 can judge that 4 greatly in 3, and matching unit 400 can determine that matching result is that described video pictures image comprises station symbol corresponding to described video pictures image.Thus matching unit 400 determines that video pictures image comprises corresponding icon, it is normal that channel plays TV programme.
The embodiment of the present invention is by obtaining video pictures image, obtain the positional information of station symbol corresponding to described video pictures image, described video pictures image obtains the image to be identified that described positional information is corresponding, obtain the characteristic information of station symbol corresponding to described video pictures image, described image to be identified is mated, obtains matching result.This can reduce digital TV terminal monitor station target error rate, improves the accuracy rate that station symbol detects.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above disclosedly be only present pre-ferred embodiments, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (10)
1. a station caption detection method, is characterized in that, described method comprises:
Obtain video pictures image;
Obtain the positional information of station symbol corresponding to described video pictures image, described video pictures image obtains the image to be identified that described positional information is corresponding;
Obtain the characteristic information of station symbol corresponding to described video pictures image, according to described characteristic information, described image to be identified is mated, obtain matching result.
2. the method for claim 1, is characterized in that, described acquisition video pictures image comprises:
Sectional drawing is carried out to the video pictures of current broadcasting, obtains video pictures image;
Gray proces is carried out to described video pictures image, generates the gray-scale map of described video pictures image.
3. method as claimed in claim 2, is characterized in that the positional information of the station symbol that described acquisition described video pictures image is corresponding comprised obtain image to be identified corresponding to described positional information on described video pictures image before:
The positional information of the station symbol that preset described video pictures image is corresponding and characteristic information, wherein, described positional information comprises the position of the station symbol of specifying and/or the size of station symbol, described characteristic information comprises at least one preset characteristic image, and described characteristic image is the characteristic image of the station symbol that described video pictures image is corresponding.
4. method as claimed in claim 3, it is characterized in that, the positional information of the station symbol that described acquisition described video pictures image is corresponding, the image to be identified described video pictures image obtaining described positional information corresponding comprises:
Obtain the positional information of station symbol corresponding to described video pictures image, described gray-scale map obtains the image to be identified that described positional information is corresponding.
5. method as claimed in claim 4, it is characterized in that, the characteristic information of the station symbol that described acquisition described video pictures image is corresponding, mates described image to be identified according to described characteristic information, obtains matching result and comprises:
Described at least one characteristic image is mated one by one with described image to be identified, obtains the number with the characteristic image of described images match to be identified;
Judge whether described number meets preset condition;
When described number meets pre-conditioned, determine that matching result is that described video pictures image comprises station symbol corresponding to described video pictures image.
6. a digital TV terminal, is characterized in that, described terminal comprises:
First acquiring unit, for obtaining video pictures image;
Second acquisition unit, for obtaining the positional information of station symbol corresponding to described video pictures image, described video pictures image obtains the image to be identified that described positional information is corresponding;
Matching unit, for obtaining the characteristic information of station symbol corresponding to described video pictures image, mates described image to be identified according to described characteristic information, obtains matching result.
7. terminal as claimed in claim 6, it is characterized in that, described first acquiring unit comprises:
Sectional drawing subelement, for carrying out sectional drawing to the video pictures of current broadcasting, obtains video pictures image;
Process subelement, for carrying out gray proces to described video pictures image, generates the gray-scale map of described video pictures image.
8. terminal as claimed in claim 7, it is characterized in that, described terminal comprises:
Preset unit, for positional information and the characteristic information of station symbol corresponding to preset described video pictures image, wherein, described positional information comprises the position of the station symbol of specifying and/or the size of station symbol, described characteristic information comprises at least one preset characteristic image, and described characteristic image is the characteristic information of the station symbol that described video pictures image is corresponding.
9. terminal as claimed in claim 8, is characterized in that, described second acquisition unit specifically for,
Obtain the positional information of station symbol corresponding to described video pictures image, described gray-scale map obtains the image to be identified that described positional information is corresponding.
10. terminal as claimed in claim 9, it is characterized in that, described matching unit comprises:
Coupling subelement, for being mated one by one with described image to be identified by described at least one characteristic image, obtains the number with the characteristic image of described images match to be identified;
Judgment sub-unit, for judging whether described number meets preset condition;
Determine subelement, when judging that described number meets preset condition for described judgment sub-unit, determine that matching result is that described video pictures image comprises station symbol corresponding to described video pictures image.
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| CN201510124483.0A CN104768029A (en) | 2015-03-20 | 2015-03-20 | Station caption detection method and digital television terminal |
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| CN201510124483.0A CN104768029A (en) | 2015-03-20 | 2015-03-20 | Station caption detection method and digital television terminal |
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