CN105681852B - A kind of video file retrieval system based on network service - Google Patents
A kind of video file retrieval system based on network service Download PDFInfo
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- CN105681852B CN105681852B CN201610166375.4A CN201610166375A CN105681852B CN 105681852 B CN105681852 B CN 105681852B CN 201610166375 A CN201610166375 A CN 201610166375A CN 105681852 B CN105681852 B CN 105681852B
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- 230000002996 emotional effect Effects 0.000 claims abstract description 24
- 230000008451 emotion Effects 0.000 claims description 48
- 238000012545 processing Methods 0.000 claims description 33
- 238000001914 filtration Methods 0.000 claims description 22
- 238000004891 communication Methods 0.000 claims description 21
- 230000001815 facial effect Effects 0.000 claims description 21
- 238000000605 extraction Methods 0.000 claims description 13
- 230000002708 enhancing effect Effects 0.000 claims description 4
- 238000010295 mobile communication Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
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Classifications
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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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41422—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance located in transportation means, e.g. personal vehicle
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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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
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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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42203—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS] sound input device, e.g. microphone
-
- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
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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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/4223—Cameras
-
- 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
- H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
- H04N21/4325—Content retrieval operation from a local storage medium, e.g. hard-disk by playing back content from the storage medium
-
- 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
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44213—Monitoring of end-user related data
- H04N21/44218—Detecting physical presence or behaviour of the user, e.g. using sensors to detect if the user is leaving the room or changes his face expression during a TV program
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Social Psychology (AREA)
- Human Computer Interaction (AREA)
- Computer Networks & Wireless Communication (AREA)
- Image Analysis (AREA)
Abstract
The present invention relates to a kind of video file retrieval system based on network service, it is arranged in motor vehicles, described searching system includes AT89C51 single-chip microcomputer, speech recognition apparatus, image detecting apparatus and network retrieval equipment, described speech recognition apparatus is for identifying that the current speech of automobile driver is to obtain the video player's name in current speech, described image detecting apparatus is for detecting the current emotional of automobile driver, described AT89C51 single-chip microcomputer and described speech recognition apparatus, described image detecting apparatus and described network retrieval equipment connect respectively, the video file retrieval operation in the Internet of the described network retrieval equipment is controlled based on described video player's name and described current emotional.
Description
The present invention is Application No. 201510306589.2, filing date June 6 in 2015 day,
The divisional application of the patent of bright entitled " a kind of video file retrieval method based on network service ".
Technical field
The present invention relates to the communications field, particularly relate to a kind of video file retrieval system based on network service
System.
Background technology
During motor vehicle driving, in order to increase the enjoyment in travelling, entertain occupant, typically
Video playback apparatus it is provided with in car, but, in prior art, automobile driver is typically engaged in be driven
Sail, and have no time in order to the visual enjoyment of self carries out the loaded down with trivial details selection operation of video file, driver
Different emotions under the video type of hobby different, and, prior art lacks according to driver's language
The operator scheme of the automatic downloading video files of sound.
To this end, the present invention proposes the search plan of a kind of new video file, it is applied on motor vehicles,
On the one hand, it is possible to realize the automatic of the video work to predetermined video player according to the voice of driver
Download, play, on the other hand, it is possible to emotion based on driver select download, play dissimilar
Video file.
Summary of the invention
In order to solve the technical problem that prior art exists, the invention provides a kind of based on network service
Video file retrieval method, first pass through speech recognition technology and parse according to predetermined text formatting
Video player's title in driver's voice, identifies driver's by image recognition technology subsequently
Current emotional, finally, current emotional based on video player's title, download from the Internet, broadcast
Put suitable video file, meet the visual demand of automobile driver at any time.
According to an aspect of the present invention, it is provided that a kind of video file retrieval side based on network service
Method, the method comprises the following steps: 1) a kind of video file retrieval system based on network service is provided
System, be arranged in motor vehicles, described searching system include AT89C51 single-chip microcomputer, speech recognition apparatus,
Image detecting apparatus and network retrieval equipment, described speech recognition apparatus is used for identifying automobile driver
Current speech to obtain the video player's name in current speech, described image detecting apparatus is used for
Detection automobile driver current emotional, described AT89C51 single-chip microcomputer respectively with described speech recognition
Equipment, described image detecting apparatus and described network retrieval equipment connect, based on described video player
Name and described current emotional control described network retrieval equipment video file retrieval in the Internet
Operation；And 2) use described searching system to retrieve.
More specifically, in described video file retrieval system based on network service, also include: regard
Frequently playback equipment, including display and user input device, for receiving and playing video file, institute
Stating display is LCDs, and described user input device is to integrate with described display
Touch screen；Power supply unit, including solar powered device, vehicle battery, switching switch and electricity
Pressure converter, described switching switch respectively with described solar powered device and described vehicle battery
Connect, decide whether to be switched to described solar powered device according to the dump energy of vehicle battery
To be powered by described solar powered device, described electric pressure converter is connected with described switching switch, with
3.3V voltage will be converted to by the 5V voltage of switching switch input；Portable hard drive, is arranged on motor-driven
In the instrumental panel of car, it is used for storing face upper limit gray threshold, face lower limit gray threshold and each face
Portion's emotion reference pattern, described face upper limit gray threshold and described face lower limit gray threshold for from
By face and background separation in image, the various feelings of the most corresponding people of each facial emotions reference pattern
Thread, each facial emotions reference pattern is obtained by the face with corresponding emotion carries out shooting in advance
Pattern, the various emotions of people include sadness, joy, tranquil and angry；CCD camera,
It is arranged on the front at automobile driver seat, adopts for the face of automobile driver is carried out image
Collection, to obtain face-image；Described image detecting apparatus, is arranged in the instrumental panel of motor vehicles, with
Described CCD camera connect, receive described face-image, described face-image is identified with
Obtain the current emotional of driver；Described image detecting apparatus includes that contrast enhancement unit, small echo are filtered
Ripple unit, gray processing processing unit, face pattern extraction unit and emotion analytic unit, described contrast
Degree enhancement unit is connected to carry out described face-image at contrast enhancing with described CCD camera
Reason, it is thus achieved that strengthen face-image, described wavelet filtering unit be connected with described contrast enhancement unit with
Described enhancing face-image is carried out Filtering Processing based on Haar wavelet transform wave filter, it is thus achieved that filtering face
Image, described gray processing processing unit is connected with described wavelet filtering unit, for described filtering face
Portion's image performs gray processing and processes, to obtain gray processing face-image, and described face pattern extraction unit
It is connected with described gray processing processing unit and described portable hard drive respectively, by described gray processing face-image
Middle gray value pixel between described face upper limit gray threshold and described face lower limit gray threshold
Identifying and form driver's face pattern, described emotion analytic unit extracts with described face pattern respectively
Unit and described portable hard drive connect, by described driver's face pattern and each facial emotions reference map
Case is mated, using facial emotions corresponding for the facial emotions reference pattern that the match is successful as working as cause
Thread exports；Described speech recognition apparatus includes that voice recognition chip, text converter, FLASH store
Device and RS232 serial ports, described voice recognition chip receives the current speech of automobile driver and by machine
The current speech of motor-car driver is converted to digital audio file, and described FLASH memory is deposited in advance
Storage character string identification form, described text converter respectively with described voice recognition chip and described
FLASH memory connects, and described digital audio file is converted to character string, and based on described character
String identifies that format identification goes out the video player's name in described character string, described RS232 serial ports and institute
State text converter to connect, be used for receiving and export described video player's name；Described AT89C51
Single-chip microcomputer, respectively with described image detecting apparatus, described portable hard drive, described speech recognition apparatus and
Described network retrieval equipment connects, and the search rule arranging described network retrieval equipment is as follows: work as reception
The current emotional arrived is for, time sad, controlling described network retrieval equipment and search on the internet from institute's predicate
Receiving playing style in all works of video player's name at sound identification equipment is peaceful regarding
Frequency file also downloads to the play buffer of described video playback apparatus, when the current emotional received
During for joy, control described network retrieval equipment and search on the internet at described speech recognition apparatus
Receive playing style in all works of video player's name to be hot video file and download
In the play buffer of described video playback apparatus, when the current emotional received is for time tranquil, control
Make described network retrieval equipment to search on the internet and receive video at described speech recognition apparatus
In all works of player's name, playing style is lyric video file and downloads to described video
In the play buffer of playback equipment, when the current emotional received is for indignation, control described network
Retrieval facility is searched on the internet and is received video player's name at described speech recognition apparatus
All works in playing style be the video file argued and download to described video playback apparatus
In play buffer；Described network retrieval equipment, arranges device including network communication interface and search rule
Part, described network communication interface is 4G mobile communication interface, and described search rule arranges device respectively
It is connected with described network communication interface and described AT89C51 single-chip microcomputer, is used for receiving described AT89C51
The search rule that single-chip microcomputer is arranged is to control described network communication interface according to described search rule mutually
Search for and download the video file of correspondence in networking, when corresponding video file is multiple, select mutually
Video file the most popular in networking is downloaded, and described network communication interface also sets with described video playback
Standby connection, for being forwarded to the play buffer of described video playback apparatus by the video file of download
In；Wherein, described contrast enhancement unit, described wavelet filtering unit, described gray processing process single
Face pattern extraction unit first, described and described emotion analytic unit are respectively adopted different FPGA cores
Sheet realizes, and is integrated on one piece of surface-mounted integrated circuit；Described character string identification form is in character string
In, latter two character is video, and all characters before latter two character are video player's name.
More specifically, in described video file retrieval system based on network service, also include: supply
Electricity equipment, provides supply of electric power for each consuming parts in described searching system.
More specifically, in described video file retrieval system based on network service, also include: string
Row communication interface, is connected with described portable hard drive, for by the face of storage in outside serial equipment
It is hard that limit gray threshold, face lower limit gray threshold and each facial emotions reference pattern are stored in described movement
Dish.
More specifically, in described video file retrieval system based on network service: described user is defeated
Enter equipment for determining whether to open the function of search of searching system under the operation of automobile driver.
More specifically, in described video file retrieval system based on network service, also include: replace
Change ground, by described contrast enhancement unit, described wavelet filtering unit, described gray processing processing unit,
Described face pattern extraction unit and described emotion analytic unit are integrated in one piece of fpga chip.
Accompanying drawing explanation
Below with reference to accompanying drawing, embodiment of the present invention are described, wherein:
Fig. 1 is according to the video file retrieval system based on network service shown in embodiment of the present invention
Block diagram.
Detailed description of the invention
Reality to the video file retrieval system based on network service of the present invention below with reference to accompanying drawings
The scheme of executing is described in detail.
Video image can reduce the discomfort in travelling, improves the recreational of travelling, but in existing skill
In art, lack replacement automobile driver manual video selection scheme, also lack and meet difference
The selection of the video file of driver's emotion, download, play mode.
In order to overcome above-mentioned deficiency, the present invention has built a kind of video file retrieval based on network service
System, combination based on speech recognition, image recognition and Internet communication technology, effectively solve above-mentioned
Technical problem.
Fig. 1 is according to the video file retrieval system based on network service shown in embodiment of the present invention
Block diagram, described searching system is arranged in motor vehicles, including AT89C51 single-chip microcomputer 1,
Speech recognition apparatus 2, image detecting apparatus 3 and network retrieval equipment 4, described speech recognition apparatus 2
For identify the current speech of automobile driver to obtain the video player's name in current speech,
Described image detecting apparatus 3 is for detecting the current emotional of automobile driver, described AT89C51
Single-chip microcomputer 1 is examined with described speech recognition apparatus 2, described image detecting apparatus 3 and described network respectively
Rope equipment 4 connects, and controls the inspection of described network based on described video player's name and described current emotional
The rope equipment 4 video file retrieval operation in the Internet.
Then, the concrete structure of the video file retrieval system based on network service to the present invention is continued
It is further detailed.
Described searching system also includes: video playback apparatus, including display and user input device,
For receiving and playing video file, described display is LCDs, described user input device
For the touch screen integrated with described display.
Described searching system also includes: power supply unit, including solar powered device, motor vehicles electric power storage
Pond, switching switch and electric pressure converter, described switching switch respectively with described solar powered device and
Described vehicle battery connects, and decides whether to be switched to institute according to the dump energy of vehicle battery
Stating solar powered device to be powered by described solar powered device, described electric pressure converter is with described
Switching switch connects, will be converted to 3.3V voltage by the 5V voltage of switching switch input.
Described searching system also includes: portable hard drive, is arranged in the instrumental panel of motor vehicles, is used for depositing
Storage face upper limit gray threshold, face lower limit gray threshold and each facial emotions reference pattern, described
Face upper limit gray threshold and described face lower limit gray threshold are used for face and background from image
Separate, the various emotions of the most corresponding people of each facial emotions reference pattern, each facial emotions
Reference pattern is by shooting obtained pattern to the face with corresponding emotion in advance, and people's is each
Kind of emotion includes sadness, joy, tranquil and angry.
Described searching system also includes: CCD camera, is arranged on the front at automobile driver seat,
For the face of automobile driver is carried out image acquisition, to obtain face-image.
Described image detecting apparatus 3 is arranged in the instrumental panel of motor vehicles, with described CCD camera
Connect, receive described face-image, be identified obtaining the current of driver to described face-image
Emotion；
Described image detecting apparatus 3 includes at contrast enhancement unit, wavelet filtering unit, gray processing
Reason unit, face pattern extraction unit and emotion analytic unit, described contrast enhancement unit is with described
CCD camera connects so that described face-image is carried out contrast enhancement processing, it is thus achieved that strengthen face figure
Picture, described wavelet filtering unit is connected with described contrast enhancement unit with to described enhancing face-image
Carry out Filtering Processing based on Haar wavelet transform wave filter, it is thus achieved that filtering face-image, at described gray processing
Reason unit is connected with described wavelet filtering unit, for performing described filtering face-image at gray processing
Reason, to obtain gray processing face-image, described face pattern extraction unit respectively with described gray processing at
Reason unit and described portable hard drive connect, by gray value in described gray processing face-image at described face
Upper limit gray threshold and described face lower limit gray threshold between pixel identification and form driver face
Portion's pattern, described emotion analytic unit respectively with described face pattern extraction unit and described portable hard drive
Connect, described driver's face pattern is mated with each facial emotions reference pattern, will coupling
The facial emotions that successfully facial emotions reference pattern is corresponding exports as current emotional.
Described speech recognition apparatus 2 includes voice recognition chip, text converter, FLASH memory
With RS232 serial ports, described voice recognition chip receives the current speech of automobile driver and by motor-driven
The current speech of car driver is converted to digital audio file, and described FLASH memory prestores
Character string identification form, described text converter respectively with described voice recognition chip and described FLASH
Memorizer connects, and described digital audio file is converted to character string, and based on described character string identification
Format identification goes out the video player's name in described character string, described RS232 serial ports and described word
Transducer connects, and is used for receiving and export described video player's name.
Described AT89C51 single-chip microcomputer 1 respectively with described image detecting apparatus 3, described portable hard drive,
Described speech recognition apparatus 2 and described network retrieval equipment 4 connect, and arrange described network retrieval equipment
The search rule of 4 is as follows:
When the current emotional received is for, time sad, controlling described network retrieval equipment 4 on the internet
Search receives at described speech recognition apparatus 2 plays wind in all works of video player's name
Lattice be peaceful video file and download to described video playback apparatus play buffer in；
When the current emotional received is for, time happy, controlling described network retrieval equipment 4 on the internet
Search receives at described speech recognition apparatus 2 plays wind in all works of video player's name
Lattice be hot video file and download to described video playback apparatus play buffer in；
When the current emotional received is for, time tranquil, controlling described network retrieval equipment 4 on the internet
Search receives at described speech recognition apparatus 2 plays wind in all works of video player's name
Lattice be lyric video file and download to described video playback apparatus play buffer in；
When the current emotional received is for indignation, control described network retrieval equipment 4 on the internet
Search receives at described speech recognition apparatus 2 plays wind in all works of video player's name
Lattice are in the video file argued the play buffer downloading to described video playback apparatus.
Described network retrieval equipment 4 includes that network communication interface and search rule arrange device, described net
Network communication interface is 4G mobile communication interface, described search rule arrange device respectively with described network
Communication interface and described AT89C51 single-chip microcomputer connect, and are used for receiving described AT89C51 single-chip microcomputer and set
The search rule put is searched according to described search rule on the internet to control described network communication interface
Rope also downloads corresponding video file, when corresponding video file is multiple, selects people on the Internet
The video file download that gas is the most prosperous, described network communication interface is also connected with described video playback apparatus,
For the video file of download is forwarded in the play buffer of described video playback apparatus.
Wherein, described contrast enhancement unit, described wavelet filtering unit, described gray processing process single
Face pattern extraction unit first, described and described emotion analytic unit are respectively adopted different FPGA cores
Sheet realizes, and is integrated on one piece of surface-mounted integrated circuit；Described character string identification form is in character string
In, latter two character is video, and all characters before latter two character are video player's name.
Alternatively, described searching system also includes: power supply unit, for each in described searching system
Consuming parts provides supply of electric power；Described searching system also includes: serial communication interface, with described shifting
Dynamic hard disk connects, for by the facial upper limit gray threshold of storage, face lower limit in outside serial equipment
Gray threshold and each facial emotions reference pattern are stored in described portable hard drive；Described user input device
For determining whether to open the function of search of searching system under the operation of automobile driver；And replace
Change ground, by described contrast enhancement unit, described wavelet filtering unit, described gray processing processing unit,
Described face pattern extraction unit and described emotion analytic unit are integrated in one piece of fpga chip.
It addition, FPGA (Field-Programmable Gate Array), i.e. field-programmable gate array
Row, he is the product of development further on the basis of the programming devices such as PAL, GAL, CPLD.
He is to occur as a kind of semi-custom circuit in special IC (ASIC) field, both solves
Determine the deficiency of custom circuit, overcome again the shortcoming that original programming device gate circuit number is limited.
The circuit design completed with hardware description language (Verilog or VHDL), can be through letter
Single comprehensive and layout, is quickly burned onto on FPGA and tests, and is modern IC designs checking
Technology main flow.These can be edited element and can be used to realize some basic logic gates (ratio
Such as AND, OR, XOR, NOT) or more more complicated combination function such as decoder or number
Learn equation.Inside most FPGA, in these editable elements, also comprise memory cell
Such as trigger (Flip-flop) or other more complete block of memory.System designer can root
By editable connection, the logical block within FPGA is coupled together according to needing, just look like an electricity
Road bread board has been placed in a chip.One dispatch from the factory after the logical block of finished product FPGA and connection
Can change according to designer, so FPGA can complete required logic function.
FPGA in general speed than ASIC (special IC) is slow, it is achieved same merit
Can be bigger than ASIC circuit area.But they also have a lot of advantages such as can quick finished product,
The mistake in correction program and less expensive cost can be modified to.Manufacturer is likely to provide cheap
But edit capability difference FPGA.Because these chips have poor can edit capability, so
The exploitation of these designs is to complete on common FPGA, then design is transferred to one and is similar to
On the chip of ASIC.Another method is with CPLD (Complex Programmable Logic
Device, CPLD).The exploitation of FPGA is relative to tradition PC, the opening of single-chip microcomputer
Send out and be very different.FPGA, based on concurrent operation, realizes with hardware description language；Compared to
The order operation of PC or single-chip microcomputer (either von Neumann structure or Harvard structure) has the biggest difference.
As far back as 1980 mid-nineties 90s, FPGA takes root in PLD equipment.CPLD and FPGA
Include the Programmadle logic unit of some relatively large amount.The density of CPLD gate arrives thousand of
Between several ten thousand logical blocks, and FPGA is typically several ten thousand to millions of.CPLD and FPGA
The main distinction be their system structure.CPLD is a somewhat restrictive structure.This knot
Structure is arranged by the logical groups of one or more editable result sum and the locking of some relatively small amounts
Depositor composition.Such result be a lack of edit motility, but but have it is anticipated that delay
Time and the logical block advantage to connecting unit height ratio.And FPGA is to have a lot of connection lists
Unit, although so allowing him edit more flexibly, but structure is complicated many.
Use the video file retrieval system based on network service of the present invention, for nothing in prior art
Method downloads the technical problem of playing video file automatically according to automobile driver current emotional and voice,
Use speech recognition, image recognition and Internet communication technology realize respectively to driver's speech analysis,
Emotion detection and video file download function, and can automatically play the video file of download, for motor-driven
Car driver provides visual enjoyment convenient, abundant.
Although it is understood that the present invention discloses as above with preferred embodiment, but above-mentioned enforcement
Example is not limited to the present invention.For any those of ordinary skill in the art, without departing from
Under technical solution of the present invention ambit, all may utilize the technology contents of the disclosure above to the technology of the present invention
Scheme makes many possible variations and modification, or is revised as the Equivalent embodiments of equivalent variations.Therefore,
Every content without departing from technical solution of the present invention, the technical spirit of the foundation present invention is to above example
Any simple modification, equivalent variations and the modification done, all still falls within technical solution of the present invention protection
In the range of.
Claims (1)
1. a video file retrieval system based on network service, is arranged in motor vehicles, described
Searching system includes AT89C51 single-chip microcomputer, speech recognition apparatus, image detecting apparatus and network retrieval
Equipment, described speech recognition apparatus is for identifying that the current speech of automobile driver is to obtain current language
Video player's name in sound, described image detecting apparatus is for detecting the current of automobile driver
Emotion, described AT89C51 single-chip microcomputer respectively with described speech recognition apparatus, described image detecting apparatus
Connect with described network retrieval equipment, control based on described video player's name and described current emotional
The video file retrieval operation in the Internet of the described network retrieval equipment；
It is characterized in that, described searching system also includes:
Video playback apparatus, including display and user input device, is used for receiving and play video literary composition
Part, described display is LCDs, and described user input device is for be integrated in described display
Touch screen together；
Power supply unit, turns including solar powered device, vehicle battery, switching switch and voltage
Parallel operation, described switching switch connects with described solar powered device and described vehicle battery respectively
Connect, according to the dump energy of vehicle battery decide whether to be switched to described solar powered device with
Being powered by described solar powered device, described electric pressure converter is connected with described switching switch, to incite somebody to action
3.3V voltage is converted to by the 5V voltage of switching switch input；
Portable hard drive, is arranged in the instrumental panel of motor vehicles, be used for storing face upper limit gray threshold,
Face lower limit gray threshold and each facial emotions reference pattern, described face upper limit gray threshold and institute
State face lower limit gray threshold for from image by face and background separation, each facial emotions benchmark
The various emotions of the most corresponding people of pattern, each facial emotions reference pattern is for right to having in advance
The face answering emotion carries out shooting obtained pattern, the various emotions of people include sadness, joy,
Tranquil and angry；
CCD camera, is arranged on the front at automobile driver seat, for automobile driver
Face carry out image acquisition, to obtain face-image；
Described image detecting apparatus, is arranged in the instrumental panel of motor vehicles, with described CCD camera
Connect, receive described face-image, be identified obtaining the current of driver to described face-image
Emotion；Described image detecting apparatus includes at contrast enhancement unit, wavelet filtering unit, gray processing
Reason unit, face pattern extraction unit and emotion analytic unit, described contrast enhancement unit is with described
CCD camera connects so that described face-image is carried out contrast enhancement processing, it is thus achieved that strengthen face figure
Picture, described wavelet filtering unit is connected with described contrast enhancement unit with to described enhancing face-image
Carry out Filtering Processing based on Haar wavelet transform wave filter, it is thus achieved that filtering face-image, at described gray processing
Reason unit is connected with described wavelet filtering unit, for performing described filtering face-image at gray processing
Reason, to obtain gray processing face-image, described face pattern extraction unit respectively with described gray processing at
Reason unit and described portable hard drive connect, by gray value in described gray processing face-image at described face
Upper limit gray threshold and described face lower limit gray threshold between pixel identification and form driver face
Portion's pattern, described emotion analytic unit respectively with described face pattern extraction unit and described portable hard drive
Connect, described driver's face pattern is mated with each facial emotions reference pattern, will coupling
The facial emotions that successfully facial emotions reference pattern is corresponding exports as current emotional；
Described speech recognition apparatus include voice recognition chip, text converter, FLASH memory and
RS232 serial ports, described voice recognition chip receives the current speech of automobile driver and by motor vehicles
The current speech of driver is converted to digital audio file, and described FLASH memory prestores word
Symbol string identify form, described text converter respectively with described voice recognition chip and described FLASH
Memorizer connects, and described digital audio file is converted to character string, and based on described character string identification
Format identification goes out the video player's name in described character string, described RS232 serial ports and described word
Transducer connects, and is used for receiving and export described video player's name；
Described AT89C51 single-chip microcomputer, respectively with described image detecting apparatus, described portable hard drive, institute
State speech recognition apparatus and described network retrieval equipment connects, the search of described network retrieval equipment is set
Rule is as follows: when the current emotional received is for time sad, control described network retrieval equipment in interconnection
Search on the net to receive at described speech recognition apparatus in all works of video player's name and drill
Play style be peaceful video file and download to described video playback apparatus play buffer in, when
The current emotional received is for, time happy, controlling described network retrieval equipment and search on the internet from institute
It is hot for stating and receiving playing style in all works of video player's name at speech recognition apparatus
Video file and download to the play buffer of described video playback apparatus, current when receive
When emotion is tranquil, controls described network retrieval equipment and search on the internet and set from described speech recognition
Standby place receive playing style in all works of video player's name be lyric video file also
Download in the play buffer of described video playback apparatus, when the current emotional received is indignation
Time, control described network retrieval equipment and search on the internet and receive at described speech recognition apparatus
In all works of video player's name, playing style is the video file argued and downloads to described
In the play buffer of video playback apparatus；
Described network retrieval equipment, arranges device, described net including network communication interface and search rule
Network communication interface is 4G mobile communication interface, described search rule arrange device respectively with described network
Communication interface and described AT89C51 single-chip microcomputer connect, and are used for receiving described AT89C51 single-chip microcomputer and set
The search rule put is searched according to described search rule on the internet to control described network communication interface
Rope also downloads corresponding video file, when corresponding video file is multiple, selects people on the Internet
The video file download that gas is the most prosperous, described network communication interface is also connected with described video playback apparatus,
For the video file of download is forwarded in the play buffer of described video playback apparatus；
Wherein, described contrast enhancement unit, described wavelet filtering unit, described gray processing are processed
Unit, described face pattern extraction unit and described emotion analytic unit are integrated in one piece of fpga chip
In；
Wherein, described character string identification form is in character string, and latter two character is video,
All characters before latter two character are video player's name；
Described power supply unit provides supply of electric power for each consuming parts in described searching system；
Serial communication interface, is connected with described portable hard drive, for by storage in outside serial equipment
Face upper limit gray threshold, face lower limit gray threshold and each facial emotions reference pattern are stored in described
Portable hard drive.
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| CN1716413A (en) * | 2004-07-02 | 2006-01-04 | 深圳市朗科科技有限公司 | Vehicle carried speech identification audio-video playing device and method |
| JP4844193B2 (en) * | 2006-03-27 | 2011-12-28 | 株式会社デンソー | Display device and program |
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| CN203661267U (en) * | 2013-11-19 | 2014-06-18 | 浙江吉利汽车研究院有限公司 | Automobile audio system |
| CN104883591A (en) * | 2015-06-06 | 2015-09-02 | 孔华 | Network communication based video file retrieval method |
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| CN1716413A (en) * | 2004-07-02 | 2006-01-04 | 深圳市朗科科技有限公司 | Vehicle carried speech identification audio-video playing device and method |
| JP4844193B2 (en) * | 2006-03-27 | 2011-12-28 | 株式会社デンソー | Display device and program |
| CN103273882A (en) * | 2013-06-08 | 2013-09-04 | 无锡北斗星通信息科技有限公司 | Predetermining system for fatigue state of automobile driver |
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