Background technology
TV is undoubtedly one of 20th century greatest invention.Since mid-term in 20th century, TV becomes rapidly spreading tool that is most important, that know best, has swept across the whole world, change the life style of the mankind with gesture with lightning speed.The TV programme of various variety classes, different content is presented in people at the moment, and various information is flooded with the visual field of people.
TV, while having enriched people's life, also brings some problems.The history display of TV study, no matter Adolescence is at which TV station, which period or which program category, his appearance situation is all very fixing.Generally speaking, the ratio of Adolescence is more stable, and TV industry relies on violence to improve audience ratings and it seems that being one is generally inclined to.The corresponding program content type of Adolescence comprises violent program, pornographic program or reaction program etc., if the program of such type is not suitable for crowd by children etc. and watches, is very out of season.
In prior art, in order to the harm preventing Adolescence related-program from bringing the crowd of being not suitable for, the form of general employing program grade manages each program to be broadcast, add hierarchical management system in end of televising simultaneously, TV owner starts the mode of differentiated control by arranging, exceed the program of predetermined level in the static broadcasting of preset period of time, thus avoid when unsupervised, children etc. are not suitable for crowd and touch the TV programme being not suitable for their viewing.
But, differentiated control pattern of the prior art cannot carry out complete monitoring to content of TV program in real time, like this, owing to may will occur that the TV programme of little violent content is divided into lower grade, TV programme occurs that the time period of Adolescence content is not fixed simultaneously, is not suitable for crowd and still can sees partial TV violent content, so, the real-time of differentiated control pattern is not high, and tv telecasting control effect is general.
Therefore, need a kind of tv telecasting control scheme of prevention Adolescence content newly, children etc. be not suitable for crowd watch TV time, the image content of the TV programme of current broadcasting can be detected in real time, once there is violence, pornographic or reaction feature in image content, the broadcasting of interfering TV program immediately, thoroughly will be not suitable for crowd and be separated with Adolescence content.
Summary of the invention
In order to solve the problem, the invention provides a kind of tv telecasting control equipment detected based on image content, quote panoramic camera for image data to obtain the panoramic picture comprising television image and spectators, quote image recognition technology and determine image content and spectators' type in real time, with spectators' type for children and image content be not suitable for children watch time, send video scrambling signal in time, be convenient to television set carries out preset mode to current television program picture scrambling according to video scrambling signal, thus make outlook on children can't see Adolescence content.
According to an aspect of the present invention, provide a kind of tv telecasting control equipment detected based on image content, described tv telecasting control equipment is arranged on the wall top in the middle of TV and spectators seat, comprise panoramic camera, image content detector, spectators' type detector and digital signal processor DSP, described panoramic camera is used for image data to obtain the panoramic picture comprising television image and spectators, described image content detector is connected with described panoramic camera, for carrying out image procossing to described panoramic picture to obtain image content, described spectators' type detector is connected with described panoramic camera, for carrying out image procossing to described panoramic picture to obtain spectators' type, described digital signal processor is connected respectively with described image content detector and described spectators' type detector, determine whether to send video scrambling signal to TV based on described image content and described spectators' type.
More specifically, in the described tv telecasting control equipment detected based on image content, also comprise: control switch, for the operation according to user, open or close tv telecasting control function, infrared transmitter, is connected with described digital signal processor, to be launched by described video scrambling signal by infrared emitting channel, RS-232 serial communication interface, for receiving the picture upper limit gray threshold of external series input, picture lower limit gray threshold, personage's upper limit gray threshold, personage's lower limit gray threshold and default phone number, also for receiving the picture type database of external series input and various personage's build pattern, described picture type database take picture type as index, save the characteristics of image that each class picture is corresponding, described picture type comprises normally, violence, pornographic and reaction, described various personage's build pattern comprises Adult Somatotype pattern, old man's build pattern and children's build pattern, described picture upper limit gray threshold and described picture lower limit gray threshold are used for the television image in image and background separation, described personage's upper limit gray threshold and described personage's lower limit gray threshold are used for the personage's build in image and background separation, described default phone number is the phone number of TV owner, memory, be connected with described RS-232 serial communication interface, for receiving and storing described picture upper limit gray threshold, described picture lower limit gray threshold, described personage's upper limit gray threshold, described personage's lower limit gray threshold, described default phone number, described picture type database and described various personage's build pattern, wireless communication interface, be connected respectively with described digital signal processor and described memory, for determine at described digital signal processor described image content be violence, pornographic or reaction and described spectators' type for children time, be wirelessly sent to the mobile communication terminal with described default phone number by being not suitable for watching relevant information to program in real time, described panoramic camera comprises the bugeye lens of laterally 360 degree and longitudinal direction 240 degree, resolution is 1504 × 1504 video sensor and image pre-processor, described bugeye lens is positioned at the front of described video sensor, described video sensor carries out IMAQ to television image and spectators, described image pre-processor is connected with described video sensor, the image collected is carried out contrast strengthen, image filtering and gray processing process successively, to obtain the panoramic picture comprising television image and spectators, described panoramic picture is gray level image, described image content detector is connected respectively with described image pre-processor and described memory, described image content detector comprises picture image cutting unit and picture type recognition unit, described picture image cutting unit is connected respectively with described image pre-processor and described memory, the pixel identification of gray value in described panoramic picture between described picture upper limit gray threshold and described picture lower limit gray threshold is formed picture subgraph, described picture type recognition unit is connected respectively with described picture image cutting unit and described memory, identify the target picture type of described picture subgraph, and in described picture type database, search the picture type of coupling to export as described image content based on described target picture type, described spectators' type detector is connected respectively with described image pre-processor and described memory, described spectators' type detector comprises audience image cutting unit and spectators' type identification unit, described audience image cutting unit is connected respectively with described image pre-processor and described memory, the pixel identification of gray value in described panoramic picture between described personage's upper limit gray threshold and described personage's lower limit gray threshold is formed personage's subgraph, described spectators' type identification unit is connected respectively with described audience image cutting unit and described memory, described personage's subgraph is mated one by one with various personage's build pattern, personage's type corresponding to the pattern that output matching arrives exports as described spectators' type, described digital signal processor and described control switch, described panoramic camera, described infrared transmitter, described picture type recognition unit is connected respectively with described spectators' type identification unit, when tv telecasting control function opened by described control switch, start described panoramic camera, described image content detector, described spectators' type detector and described infrared transmitter, and enter picture content detection pattern, when described control switch closing television Broadcast Control function, close described panoramic camera, described image content detector, described spectators' type detector and described infrared transmitter, wherein, described digital signal processor is in described image content detecting pattern, when described image content is violence, pornographic or reaction and described spectators' type is children, control described infrared transmitter and launch described video scrambling signal, described video scrambling signal is used for TV and carries out scrambling to current television program.
More specifically, in the described tv telecasting control equipment detected based on image content, also comprise: phonetic alarm, be connected with described digital signal processor, to determine at described digital signal processor that described image content is violence, pornographic or reaction and described spectators' type for children time, play in real time and be not suitable for watching relevant voice prompted file to program.
More specifically, in the described tv telecasting control equipment detected based on image content, described phonetic alarm is two-way speaker.
More specifically, in the described tv telecasting control equipment detected based on image content, also comprise: display, be connected with described digital signal processor, to determine at described digital signal processor that described image content is violence, pornographic or reaction and described spectators' type for children time, display is in real time not suitable for watching relevant information to program.
More specifically, in the described tv telecasting control equipment detected based on image content, described display is LCDs.
Embodiment
Below with reference to accompanying drawings the embodiment of the tv telecasting control equipment based on image content detection of the present invention is described in detail.
Evidence shows, more than four/the centurial time in, the behavior of violence on TV on children has quite lasting impact.
The effect that regarding TV violence may bring people's behavior, someone proposes many different hypothesis.One of them is about catharsis hypothesis, and this hypothesis proposes, and the aggressive behavior of drama hero have expressed the violent tenet of people's heart alternatively, thus by viewing Adolescence, can reduce and take actual tortious impulsion.But also there is several hypothesis prediction about stimulating act of violence, thinking and seeing that Adolescence will increase actual aggressive behavior.Another imitates hypothesis, thinks that people to have learnt aggressive behavior from TV, and then go to outside to imitate in the same old way.
In addition, Adolescence has become very important phenomenon, may produce harmful effect to the cognition of child, mood and behavior.Parents of infants and teacher, television program designing side and responsible departments of the government should make joint efforts, and eliminate Adolescence from different perspectives to the harm of child.TV programme with violence color can produce harmful effect to the psychology of child, may cause the aggression of audient.
Obviously, hold the broadcasting of control Adolescence content can solve the crowd of impact Adolescence content is not suitable for to(for) children etc. from source from televising, but the associated television Broadcast Control pattern poor real of prior art, Broadcast Control efficiency are not high, cannot complete all kinds of Adolescence content.
The present invention has built a kind of tv telecasting control equipment detected based on image content, when opening tv telecasting control function, violent content can be there is at television image one, immediately to TV programme scrambling, and carrying out corresponding alarm operation, the program viewing for children erects the barrier of safety.
Fig. 1 is the block diagram of the tv telecasting control equipment based on image content detection illustrated according to an embodiment of the present invention, described tv telecasting control equipment is arranged on the wall top in the middle of TV and spectators seat, comprise panoramic camera 1, image content detector 3, spectators' type detector 4 and digital signal processor DSP 2, described panoramic camera 1 comprises the panoramic picture of television image and spectators with acquisition for image data, described image content detector 3 is connected with described panoramic camera 1, for carrying out image procossing to described panoramic picture to obtain image content, described spectators' type detector 4 is connected with described panoramic camera 1, for carrying out image procossing to described panoramic picture to obtain spectators' type, described digital signal processor 2 and described panoramic camera 1, described image content detector 3 is connected respectively with described spectators' type detector 4, determine whether to send video scrambling signal to TV based on described image content and described spectators' type.
Then, continue to be further detailed the concrete structure of the tv telecasting control equipment based on image content detection of the present invention.
Also comprise in described tv telecasting control equipment: control switch, for the operation according to user, open or close tv telecasting control function.
Also comprise in described tv telecasting control equipment: infrared transmitter, be connected with described digital signal processor 2, described video scrambling signal is launched by infrared emitting channel.
Also comprise in described tv telecasting control equipment: RS-232 serial communication interface, for receiving the picture upper limit gray threshold of external series input, picture lower limit gray threshold, personage's upper limit gray threshold, personage's lower limit gray threshold and default phone number, also for receiving the picture type database of external series input and various personage's build pattern, described picture type database take picture type as index, save the characteristics of image that each class picture is corresponding, described picture type comprises normally, violence, pornographic and reaction, described various personage's build pattern comprises Adult Somatotype pattern, old man's build pattern and children's build pattern, described picture upper limit gray threshold and described picture lower limit gray threshold are used for the television image in image and background separation, described personage's upper limit gray threshold and described personage's lower limit gray threshold are used for the personage's build in image and background separation, described default phone number is the phone number of TV owner.
Also comprise in described tv telecasting control equipment: memory, be connected with described RS-232 serial communication interface, for receiving and storing described picture upper limit gray threshold, described picture lower limit gray threshold, described personage's upper limit gray threshold, described personage's lower limit gray threshold, described default phone number, described picture type database and described various personage's build pattern.
Also comprise in described tv telecasting control equipment: wireless communication interface, be connected respectively with described digital signal processor 2 and described memory, for determine at described digital signal processor 2 described image content be violence, pornographic or reaction and described spectators' type for children time, be wirelessly sent to the mobile communication terminal with described default phone number by being not suitable for watching relevant information to program in real time.
As shown in Figure 2, described panoramic camera 1 comprises the bugeye lens 11 of transverse direction 360 degree and longitudinal 240 degree, resolution is video sensor 12 and the image pre-processor 13 of 1504 × 1504, described bugeye lens 11 is positioned at the front of described video sensor 12, described video sensor 12 pairs of television images and spectators carry out IMAQ, described image pre-processor 13 is connected with described video sensor 12, the image collected is carried out contrast strengthen successively, image filtering and gray processing process, to obtain the panoramic picture comprising television image and spectators, described panoramic picture is gray level image.
Described image content detector 3 is connected respectively with described image pre-processor 13 and described memory, described image content detector 3 comprises picture image cutting unit and picture type recognition unit, described picture image cutting unit is connected respectively with described image pre-processor 13 and described memory, the pixel identification of gray value in described panoramic picture between described picture upper limit gray threshold and described picture lower limit gray threshold is formed picture subgraph, described picture type recognition unit is connected respectively with described picture image cutting unit and described memory, identify the target picture type of described picture subgraph, and in described picture type database, search the picture type of coupling to export as described image content based on described target picture type.
Described spectators' type detector 4 is connected respectively with described image pre-processor 13 and described memory, described spectators' type detector 4 comprises audience image cutting unit and spectators' type identification unit, described audience image cutting unit is connected respectively with described image pre-processor 13 and described memory, the pixel identification of gray value in described panoramic picture between described personage's upper limit gray threshold and described personage's lower limit gray threshold is formed personage's subgraph, described spectators' type identification unit is connected respectively with described audience image cutting unit and described memory, described personage's subgraph is mated one by one with various personage's build pattern, personage's type corresponding to the pattern that output matching arrives exports as described spectators' type.
Described digital signal processor 2 and described control switch, described panoramic camera 1, described infrared transmitter, described picture type recognition unit is connected respectively with described spectators' type identification unit, when tv telecasting control function opened by described control switch, start described panoramic camera 1, described image content detector 3, described spectators' type detector 4 and described infrared transmitter, and enter picture content detection pattern, when described control switch closing television Broadcast Control function, close described panoramic camera 1, described image content detector 3, described spectators' type detector 4 and described infrared transmitter.
Wherein, described digital signal processor 2 is in described image content detecting pattern, when described image content is violence, pornographic or reaction and described spectators' type is children, control described infrared transmitter and launch described video scrambling signal, described video scrambling signal is used for TV and carries out scrambling to current television program.
Wherein, described tv telecasting control equipment can also comprise: phonetic alarm, be connected with described digital signal processor 2, to determine that described image content is for violence at described digital signal processor 2, when pornographic or reaction and described spectators' type are children, real-time broadcasting and program are not suitable for watching relevant voice prompted file, described phonetic alarm is chosen as two-way speaker, described tv telecasting control equipment can also comprise: display, be connected with described digital signal processor 2, to determine that described image content is for violence at described digital signal processor 2, when pornographic or reaction and described spectators' type are children, real-time display and program are not suitable for watching relevant information, described display is chosen as LCDs.
In addition, Digital Signal Processing is represented in a digital manner by signal and the theory and technology processed.Digital Signal Processing and analog are the subsets of signal transacting.The object of Digital Signal Processing measures or filtering the continuous analog signal of real world.Therefore before carrying out Digital Signal Processing, need signal from analog territory to be transformed into numeric field, this is realized by analog to digital converter usually.And the output of Digital Signal Processing often also will transform to analog domain, this is realized by digital to analog converter.
Digital signal processor DSP is widely used in many fields such as Communication and Information Systems, Signal and Information Processing, automatically control, radar, military affairs, Aero-Space, medical treatment, household electrical appliance.Be adopt general microprocessor to complete a large amount of Digital Signal Processing computing, speed is comparatively slow, is difficult to meet actual needs in the past; And use bit slice microprocessor and quick paral-lel multiplier simultaneously, be once the effective way realizing Digital Signal Processing, but the method device is more, logical design and programming complexity, power consumption is comparatively large, expensive.The appearance of digital signal processor DSP, well solves the problems referred to above.
Digital signal processor DSP can realize the process such as collection, conversion, filtering, valuation, enhancing, compression, identification to signal fast, to obtain the signal form meeting people's needs.The algorithm of DSP has multiple.Most dsp processors uses fixed-point algorithm, and numeral is the decimal form between integer or-1.0 to+1.0.Some processor adopts floating-point arithmetic, and tables of data is shown as the form that mantissa adds index: mantissa × 2 index.
Floating-point arithmetic is a kind of more complicated conventional algorithm, utilizes floating data can realize large data dynamic range (this dynamic range can represent with the ratio of minimum and maximum number).In the application, design engineer need not be concerned about the problem of dynamic range and precision one class to Floating-point DSP.Floating-point DSP is easier than fixed DSP programmes, but cost and power consumption high.Due to cost and power consumption, general bulk article selects fixed DSP.Programming and algorithm design personnel determine required dynamic range and precision by analyzing or emulating.If require to be easy to exploitation, and dynamic range is very wide, precision is very high, can consider to adopt Floating-point DSP.Also can adopt fixed DSP condition under by software simulating Floating-point Computation, but such software program can take a large amount of processor time, thus seldom uses.Effective way is " block floating point ", utilizes the method to have same index, and the different one group of data of mantissa process as data block.The logical popular software of " block floating point " process realizes.
Adopt the tv telecasting control equipment detected based on image content of the present invention, for existing isolation Adolescence content tv telecasting control pattern poor real, monitor incomplete technical problem, to be televised picture by Real-Time Monitoring, when current viewing people being detected for children, one finds violence associated television content, immediately scrambling is carried out to this television content, thus Adolescence content is completed be not suitable for crowd with children etc. and keep apart.
Be understandable that, although the present invention with preferred embodiment disclose as above, but above-described embodiment and be not used to limit the present invention.For any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the technology contents of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.