CN105611110A - Image processing method and apparatus - Google Patents
Image processing method and apparatus Download PDFInfo
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- CN105611110A CN105611110A CN201510998273.4A CN201510998273A CN105611110A CN 105611110 A CN105611110 A CN 105611110A CN 201510998273 A CN201510998273 A CN 201510998273A CN 105611110 A CN105611110 A CN 105611110A
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- mark
- image
- embedded
- frequency domain
- domain data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
- H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
- H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
- H04N1/32154—Transform domain methods
- H04N1/3217—Transform domain methods using wavelet transforms
Abstract
The invention discloses an image processing apparatus. The image processing apparatus comprises a first acquisition module, an embedded module, and a first reconstruction module. The first acquisition module is used for acquiring a to-be-embedded identifier and an original image, and converting the to-be-embedded identifier and the original image into frequency domain data. The embedded module is used for decomposing the frequency domain data of the original image for at least one time so as to obtain low frequency part of the frequency domain data of the original image, and embedding the frequency domain data of the to-be-embedded identifier in the low frequency part. The first reconstruction module is used for performing image reconstruction on the image frequency domain data of the frequency domain data with the to-be-embedded identifier embedded so as to obtain the image with the identifier embedded. The invention also provides an image processing method. The identifier set by a user is embedded in the low frequency region of the selected image, and the identifier is embedded in the image in a hidden manner, thereby being not easy to see by naked eyes, so that the image display effect is not affected while the copyright is protected.
Description
Technical field
The present invention relates to technical field of image processing, relate in particular to a kind of image processing method and device.
Background technology
Along with the fast development of computer, multimedia and network technology, view data is greatly abundant, and lightJust can obtain by network and easily lift ground, make view data quilt in the situation that not being subject to any control lightEasily copy and change, cause copyright owner's rights and interests to can not get effective protection.
Taking pictures is a critical function of mobile phone, and the protection of cell phone pictures is often ignored by people. WeAfter photographing the reasonable photo of effect, often by add oneself characteristic signature or mark to photoThe mode of note. The protected mode of this photo, characteristic signature or mark are presented on photo, be easy to byOthers finds, and then processes, and changes or removes characteristic signature or mark, then usurps photo.
Summary of the invention
Main purpose of the present invention is to propose a kind of image processing method and device, is intended to solve mobile phone and clapsTake the photograph the mark technical problem that is easily found and removes that photo embeds.
For achieving the above object, the invention provides a kind of image processing apparatus, described image processing apparatus bagDraw together:
The first acquisition module, for obtaining respectively mark to be embedded and original image, by described mark to be embeddedKnowledge and described original image are transformed to respectively frequency domain data;
Merge module, for the described frequency domain data of described original image is decomposed at least one times,To the low frequency part of described original image frequency domain data, the frequency domain data of described mark to be embedded is embedded to instituteState low frequency part;
The first reconstructed module, for by the image frequency domain data of the frequency domain data of described embedding mark to be embeddedCarry out Image Reconstruction, embedded the image of mark.
Alternatively, described the first acquisition module comprises:
Display unit, in the time receiving encrypted instruction, shows the page of input mark to be embedded;
Acquiring unit, in the time receiving the confirmation order, obtains respectively mark to be embedded and original image;
Processing unit, for being transformed to respectively frequency domain data by described mark to be embedded and described original image.
Alternatively, described merge module comprises:
The first resolving cell, for decompose described original image frequency domain data by LPF, obtains instituteState the first low frequency part of original image frequency domain data;
The second resolving cell, for decompose described the first low frequency part by LPF, obtains described formerThe second low frequency part of beginning image frequency domain data;
Embedded unit, for obtaining default embedment strength value, treats described in inciting somebody to action according to described embedment strength valueThe frequency domain data that embeds mark embeds described the second low frequency part.
Alternatively, described image processing apparatus also comprises:
Logging modle, for obtaining the status information of described mark to be embedded Set For Current or default;
Memory module, for status information and the described mark that embedded of mark to be embedded described in association storeImage.
Alternatively, described image processing apparatus also comprises:
The second acquisition module, in the time receiving decryption command, has embedded the image of mark described in obtaining;
Extraction module, for decomposing the described image that has embedded mark image conversion when embedding markNumber of times, carry out same number image conversion decompose, extract and embed according to described embedment strength valueThe frequency domain data of described mark to be embedded;
The second reconstructed module, for by the frequency domain data of the described mark to be embedded extracting with extract instituteThe image frequency domain data of stating the frequency domain data of mark to be embedded are reconstructed, and obtain described mark and original graphPicture.
The present invention further provides a kind of image processing method, described image processing method comprises step:
Obtain respectively mark to be embedded and original image, described mark to be embedded and described original image are dividedBe not transformed to frequency domain data;
The described frequency domain data of described original image is decomposed at least one times, obtain described original imageThe low frequency part of frequency domain data, embeds described low frequency part by the frequency domain data of described mark to be embedded;
The image frequency domain data that embed described mark frequency domain data are carried out to Image Reconstruction, embedded markThe image of knowing.
Alternatively, described mark to be embedded and the original image of obtaining respectively, by described mark to be embedded and instituteState the step step that original image is transformed to respectively frequency domain data:
In the time receiving encrypted instruction, show the page of input mark to be embedded;
In the time receiving the confirmation order, described mark to be embedded and the original image of obtaining respectively;
Described mark to be embedded and described original image are transformed to respectively to frequency domain data.
Alternatively, the described described frequency domain data by described original image decomposes at least one times, obtainsThe low frequency part of described original image frequency domain data, described in the frequency domain data of described mark to be embedded is embeddedThe step of low frequency part comprises:
Decompose described original image frequency domain data by LPF, obtain described original image frequency domain dataThe first low frequency part;
Decompose described the first low frequency part by LPF, obtain of described original image frequency domain dataTwo low frequency part;
Obtain default embedment strength value, according to described embedment strength value by the frequency domain of described mark to be embeddedData embed described the second low frequency part.
Alternatively, described mark to be embedded and the original image of obtaining respectively, by described mark to be embedded and instituteBefore stating the step that original image is transformed to respectively frequency domain data, described image processing method also comprises step:
Obtain the status information of described mark to be embedded Set For Current or default;
After the step of the described image that has been embedded mark, comprise:
The status information of mark to be embedded and the described image that has embedded mark described in association store.
Alternatively, described in embedded the step of image of mark after, described image processing method is alsoComprise:
In the time receiving decryption command, described in obtaining, embed the image of mark;
The number of times that when the described image that has embedded mark is identified according to embedding, image conversion decomposes, carries out phaseImage conversion with number of times decomposes, and extracts the frequency of the described mark having embedded according to described embedment strength valueNumeric field data;
By the frequency domain data of the described mark to be embedded extracting and the frequency domain that extracts described mark to be embeddedThe image frequency domain data of data are reconstructed, and obtain described mark and original image.
Image processing method and device that the present invention proposes, obtain respectively mark to be embedded and original image,Described mark to be embedded and described original image are transformed to respectively to frequency domain data; By described original imageFrequency domain data decomposes at least one times, obtains the low frequency part of described original image frequency domain data, by instituteThe frequency domain data of stating mark to be embedded embeds described low frequency part. By embedding hiding user's special identifierThe photo of taking to user, special identifier is difficult for being found and removing, shadow not when protection photo copyrightRing the display effect of the photo of user's shooting.
Brief description of the drawings
Fig. 1 is the hardware configuration schematic diagram of realizing the mobile terminal of each embodiment of the present invention;
Fig. 2 is the electrical structure block diagram of camera in Fig. 1;
Fig. 3 is the high-level schematic functional block diagram of image processing apparatus the first embodiment of the present invention;
Fig. 4 is the refinement high-level schematic functional block diagram of the first acquisition module in Fig. 3;
Fig. 5 is the high-level schematic functional block diagram of image processing apparatus the second embodiment of the present invention;
Fig. 6 is that image carries out the schematic diagram after a wavelet transformation decomposes;
Fig. 7 is that image carries out the schematic diagram after Second Wavelet Transform decomposition;
Fig. 8 is the high-level schematic functional block diagram of image processing apparatus of the present invention the 3rd embodiment;
Fig. 9 is the high-level schematic functional block diagram of image processing apparatus of the present invention the 4th embodiment;
Figure 10 is the schematic flow sheet of image processing method the first embodiment of the present invention;
Figure 11 obtains respectively mark to be embedded and original image in Figure 10, by described mark to be embedded and instituteState the schematic flow sheet that original image is transformed to respectively frequency domain data;
Figure 12 is the schematic flow sheet of image processing method the second embodiment of the present invention;
Figure 13 is the schematic flow sheet of image processing method of the present invention the 3rd embodiment;
Figure 14 is the schematic flow sheet of image processing method of the present invention the 4th embodiment.
Realization, functional characteristics and the advantage of the object of the invention, in connection with embodiment, are done further with reference to accompanying drawingExplanation.
Detailed description of the invention
Should be appreciated that specific embodiment described herein is only in order to explain the present invention, and be not used in limitDetermine the present invention.
The mobile terminal of realizing each embodiment of the present invention is described referring now to accompanying drawing. In follow-up descriptionIn, use the suffix such as " module ", " parts " or " unit " that is used for representing element only in order to haveBe beneficial to explanation of the present invention, itself do not have specific meaning. Therefore, " module " can with " parts "Mixedly to use.
Mobile terminal can be implemented with various forms. For example, the terminal of describing in the present invention can compriseSuch as mobile phone, smart phone, notebook computer, digit broadcasting receiver, PDA, (individual digital helpsReason), PAD (panel computer), PMP (portable media player), guider etc. eventually mobileEnd and such as the fixed terminal of digital TV, desktop computer etc. Suppose that terminal is eventually mobile below,End. But, it will be appreciated by those skilled in the art that the element except being used in particular for mobile object,Structure according to the embodiment of the present invention also can be applied to the terminal of fixed type.
Fig. 1 is the hardware configuration signal that realizes the mobile terminal of each embodiment of the present invention.
Mobile terminal 100 can comprise wireless communication unit 110, A/V (audio/video) input block 120,User input unit 130, sensing cell 140, output unit 150, memory 160, interface unit 170,Controller 180 and power subsystem 190 etc. Fig. 1 shows the mobile terminal with various assemblies, but shouldUnderstand, and do not require all assemblies that illustrate of enforcement. Can alternatively implement more or less groupPart. Will be discussed in more detail below the element of mobile terminal.
Wireless communication unit 110 generally includes one or more assemblies, and it allows mobile terminal 100 with wirelessRadio communication between communicator or network. For example, wireless communication unit can comprise mobile communicationAt least one in module 112, wireless Internet module 113.
Mobile communication module 112 by radio signal send to base station (for example, access point, Node B etc.),At least one in exterior terminal and server and/or receive radio signals from it. Such radioSignal can comprise voice call signal, video calling signal or according to text and/or Multimedia MessageThe various types of data that send and/or receive.
Wireless Internet module 113 is supported the Wi-Fi (Wireless Internet Access) of mobile terminal. This module can be inner orExternally be couple to terminal. The related Wi-Fi (Wireless Internet Access) technology of this module can comprise WLAN (nothingLine LAN) (Wi-Fi), Wibro (WiMAX), Wimax (worldwide interoperability for microwave access), HSDPA (at a high speedDownlink packets access) etc.
A/V input block 120 is for audio reception or vision signal. A/V input block 120 can comprise phaseMachine 121 and microphone 122, camera 121 in Video Capture pattern or image capture mode by image captureThe static images that device obtains or the view data of video are processed. Picture frame after treatment can showOn display unit 151. (or other is deposited can be stored in memory 160 through camera 121 picture frame after treatmentStorage media) in or send via wireless communication unit 110, can provide according to the structure of mobile terminalTwo or more cameras 121. Microphone 122 can be in telephone relation pattern, logging mode, speech recognitionIn pattern etc. operational mode, receive sound (voice data) via microphone, and can be by such soundBe treated to voice data. Audio frequency after treatment (voice) data can be changed the in the situation that of telephone relation patternFor sending to via mobile communication module 112 formatted output of mobile communication base station. Microphone 122 canImplement various types of noises and eliminate (or inhibition) algorithm to eliminate (or inhibition) in reception and to send audio signalProcess in the noise or the interference that produce.
User input unit 130 can generate key input data to control movement according to the order of user's inputThe various operations of terminal. User input unit 130 allows user to input various types of information, and canComprise that keyboard, the young sheet of pot, touch pad (for example, detect owing to being touched the resistance, pressure, the electricity that causeThe touch-sensitive assembly of variation holding etc.), roller, rocking bar etc. Especially, when touch pad is with the form of layerWhile being superimposed upon on display unit 151, can form touch-screen.
Sensing cell 140 detects the current state of mobile terminal 100, (for example, mobile terminal 100 open orClosed condition), the position of mobile terminal 100, user be for the contact (, touching input) of mobile terminal 100Have or not, the acceleration of the orientation of mobile terminal 100, mobile terminal 100 or speed is moved and direction etc.,And generate order or the signal of the operation for controlling mobile terminal 100. For example,, when mobile terminal 100While being embodied as sliding-type mobile phone, sensing cell 140 can be opened or close by this sliding-type phone of sensingClose. In addition, sensing cell 140 can detect power subsystem 190 whether electric power or interface unit 170 are providedWhether couple with external device (ED).
Interface unit 170 is connected with mobile terminal 100 connecing of can passing through as at least one external device (ED)Mouthful. For example, external device (ED) can comprise wired or wireless head-band earphone port, external power source (or batteryCharger) port, wired or wireless FPDP, memory card port, there is identification module for connectingPort, audio frequency I/O (I/O) port, video i/o port, ear port of device etc. Identification mouldPiece can be that storage is used the various information of mobile terminal 100 and can comprise user for authentication of usersIdentification module (UIM), client identification module (SIM), general client identification module (USIM) etc. In addition,The device (being called " recognition device " below) with identification module can be taked the form of smart card, therefore,Recognition device can be connected with mobile terminal 100 via port or other jockey. Interface unit 170 canFor for example receiving, from the input (, data message, electric power etc.) of external device (ED) and receivingInput be transferred to one or more elements in mobile terminal 100 or can for mobile terminal and outsideBetween part device, transmit data.
In addition, in the time that mobile terminal 100 is connected with external base, interface unit 170 can be logical as allowingCrossing it is provided to electric power the path of mobile terminal 100 or can inputs from base as allowing from baseVarious command signals be transferred to the path of mobile terminal by it. From the various command signals of base inputOr whether electric power can be arranged on the signal on base exactly with acting on identification mobile terminal. Output is singleUnit 150 be constructed to vision, audio frequency and/or tactile manner provide output signal (for example, audio signal,Vision signal, alarm signal, vibration signal etc.). Output unit 150 can comprise display unit 151,Audio frequency output module 152, alarm unit 153 etc.
Display unit 151 may be displayed on the information of processing in mobile terminal 100. For example, work as mobile terminal100 in the time of telephone relation pattern, and display unit 151 can show and call or other (for example, literary composition of communicating by letterThis information receiving and transmitting, multimedia file are downloaded etc.) relevant user interface (UI) or graphic user interface(GUI). When mobile terminal 100 is during in video calling pattern or image capture mode, display unit 151Can the image of display capture and/or the image of reception, illustrate video or image and correlation function UI orGUI etc.
Meanwhile, in the time that display unit 151 and touch pad superpose to form touch-screen with the form of layer each other, aobviousShow that unit 151 can be used as input unit and output device. Display unit 151 can comprise liquid crystal display(LCD), thin film transistor (TFT) LCD (TFT-LCD), Organic Light Emitting Diode (OLED) display, flexible aobviousShow at least one in device, three-dimensional (3D) display etc. Some in these displays can be constructed toTransparence is to allow user to watch from outside, and this can be called transparent display, typical transparent displayIt can be for example TOLED (transparent organic light emitting diode) display etc. According to the specific enforcement of wantingMode, mobile terminal 100 can comprise two or more display units (or other display unit), for example,Mobile terminal can comprise outernal display unit (not shown) and inner display unit (not shown). Touch-screen canFor detection of touching input pressure and touch input position and touch input area.
Audio frequency output module 152 can be at mobile terminal in call signal receiving mode, call mode, noteThe isotype such as record pattern, speech recognition mode, broadcast reception pattern lower time, wireless communication unit 110 is connectReceive or in memory 160 storage voice data convert audio signals and be output as sound. AndAnd audio frequency output module 152 can provide the audio frequency that the specific function carried out to mobile terminal 100 is relevant defeatedGo out (for example, call signal receives sound, message sink sound etc.). Audio frequency output module 152 can wrapDraw together sound pick-up, buzzer etc.
Alarm unit 153 can provide output with notifying to mobile terminal 100 event. TypicallyEvent can comprise calls out reception, message sink, key signals input, touch input etc. Except audio frequencyOr outside video output, alarm unit 153 can provide output sending out with notification event in a different mannerRaw. For example, alarm unit 153 can provide output with the form of vibration, when receive calling, message orSome other while entering communication (incomingcommunication), alarm unit 153 can provide sense of touch defeatedGo out (, vibration) to be notified to user. By such sense of touch output is provided, even moving userIn the pocket of mobile phone in user time, user also can identify the generation of variety of event. Alarm unit153 also can provide via display unit 151 or audio frequency output module 152 output of the generation of notification event.
Memory 160 can be stored processing and the software program of control operation etc. carried out by controller 180Deng, or can temporarily store the data that oneself maybe will export through output (for example, telephone directory, message,Still image, video etc.). And memory 160 can be stored about in the time that touch is applied to touch-screenThe vibration of variety of way and the data of audio signal of output.
Memory 160 can comprise the storage medium of at least one type, described storage medium comprise flash memory,Hard disk, multimedia card, card type memory (for example, SD or DX memory etc.), random access storage device(RAM), static random-access memory (SRAM), read-only storage (ROM), electrically erasableRead-only storage (EEPROM), programmable read only memory (PROM), magnetic storage, disk, lightDish etc. And, mobile terminal 100 can with the memory function that is connected execute store 160 by networkNetwork storage device cooperation.
Controller 180 is controlled the overall operation of mobile terminal conventionally. For example, controller 180 is carried out and voiceThe control that call, data communication, video calling etc. are relevant and processing. Controller 180 can execution patternIdentifying processing, with the handwriting input of carrying out on touch-screen or picture are drawn input be identified as character orImage.
Power subsystem 190 receives external power or internal power and behaviour is provided under the control of controller 180Make the required suitable electric power of each element and assembly.
Various embodiment described herein can be for example to use computer software, hardware or its any groupThe computer-readable medium closing is implemented. For hardware implementation, embodiment described herein can pass throughUse application-specific IC (ASIC), digital signal processor (DSP), digital signal processing device(DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controlDevice, microcontroller, microprocessor, be designed to carry out in the electronic unit of function described herein extremelyFew one is implemented, and in some cases, such embodiment can be implemented in controller 180. RightIn implement software, can carry out at least one function or behaviour with permission such as the embodiment of process or functionThe independent software module of doing is implemented. Software code can be by writing with any suitable programming languageSoftware application (or program) is implemented, and software code can be stored in memory 160 and by controllingDevice 180 is carried out.
So far, oneself through according to its functional description mobile terminal. Below, for the sake of brevity, will describeSuch as various types of mobile terminals of folded form, board-type, oscillating-type, slide type mobile terminal etc.In slide type mobile terminal as example. Therefore, the present invention can be applied to the eventually mobile of any typeEnd, and be not limited to slide type mobile terminal.
With reference to Fig. 2, Fig. 2 is the electrical structure block diagram of camera in Fig. 1.
Phtographic lens 1211 is made up of the multiple optical lens that are used to form shot object image, is single-focus lensOr zoom lens. Phtographic lens 1211 can move under the control of lens driver 1221 on optical axis directionMoving, lens driver 1221, according to the control signal from lens driving control circuit 1222, is controlled photographyThe focal position of camera lens 1211, the in the situation that of zoom lens, also can control focal length. Lens drivingControl circuit 1222 carries out driving of lens driver 1221 according to the control command from microcomputer 1217Moving control.
Near the position of the shot object image forming on the optical axis of phtographic lens 1211, by phtographic lens 1211Dispose imaging apparatus 1212. Imaging apparatus 1212 is for making a video recording to shot object image and obtaining photographed images numberAccording to. Two dimension and be rectangular disposing and form the photodiode of each pixel on imaging apparatus 1212. RespectivelyPhotodiode produces the opto-electronic conversion electric current corresponding with light income, this opto-electronic conversion electric current by with each photoelectricityThe capacitor that diode connects carries out electric charge and accumulates. The front surface of each pixel disposes the RGB that Bayer is arrangedColour filter.
Imaging apparatus 1212 is connected with imaging circuit 1213, and this imaging circuit 1213 is in imaging apparatus 1212Carry out electric charge accumulate control and picture signal read control, to this picture signal of reading (analog picture signal)After reducing replacement noise, carry out waveform shaping, and then the raising that gain etc. is to become suitable signal level.Imaging circuit 1213 is connected with A/D converter 1214, and this A/D converter 1214 carries out analog picture signalAnalog-to-digital conversion, to bus 1227 output digital image signals (being referred to as below view data).
Bus 1227 is transfer paths of the various data reading or generate of the inside for being transmitted in camera.Connect above-mentioned A/D converter 1214 in bus 1227, connecting in addition image processor 1215, JPEGProcessor 1216, microcomputer 1217, SDRAM (SynchronousDynamicrandomaccessMemory, SDRAM) 1218, memory interface (is referred to as memory belowI/F) 1219, LCD (LiquidCrystalDisplay, liquid crystal display) driver 1220.
Image processor 1215 carries out OB to the view data of the output based on imaging apparatus 1212 and subtracts each other placeReason, blank level adjustment, color matrix computing, gamma conversion, colour difference signal processing, noise removal process,Change the various image processing such as processing, edge treated simultaneously. Jpeg processor 1216 is by Imagery Data RecordingIn the time of recording medium 1225, compress the view data of reading from SDRAM1218 according to JPEG compress mode.In addition, jpeg processor 1216 carries out the decompress(ion) of jpeg image data in order to carry out image reproducing demonstrationContracting. While decompression, read the file being recorded in recording medium 1225, at jpeg processor 1216In implemented after decompression, the view data of decompression is temporarily stored in SDRAM1218 andOn LCD1226, show. In addition, in the present embodiment, adopt as compression of images decompression modeBe JPEG mode, but compressed and decompressed mode is not limited to this, certainly can adopt MPEG, TIFF,H.264 wait other compressed and decompressed mode.
Microcomputer 1217 is brought into play the function as the control part of this camera entirety, unified control cameraVarious processing sequences. Microcomputer 1217 is connecting operating unit 1223 and flash memory 1224.
Operating unit 1223 includes but not limited to physical button or virtual key, this entity or virtual keyCan for power knob, the key of taking pictures, edit key, dynamic image button, reproduce button, menu button,The operations such as various load buttons and various enter keies such as cross key, OK button, delete button, large buttonsControl, detects the mode of operation of these operational controls.
Testing result is exported to microcomputer 1217. In addition, the LCD1226's as displayFront surface is provided with touch panel, detects user's touch location, by this touch location to microcomputer 1217Output. Microcomputer 1217, according to the testing result of the operating position from operating unit 1223, is carried outThe various processing sequences corresponding with user's operation.
Flash memory 1224 storages are used for the program of the various processing sequences of carrying out microcomputer 1217. MicrocomputerCalculation machine 1217 carries out the control of camera entirety according to this program. In addition, flash memory 1224 is stored the various of cameraAdjusted value, microcomputer 1217 is read adjusted value, carries out the control of camera according to this adjusted value.
SDRAM1218 is for view data etc. being carried out to can electric volatibility of rewriting depositing of temporary transient storageReservoir. The view data that the temporary transient storage of this SDRAM1218 is exported from A/D converter 1214 and at imageIn reason device 1215, jpeg processor 1216 etc., carry out view data after treatment.
Memory interface 1219 is connected with recording medium 1225, carries out view data and is attached to picture numberAccording in the first-class data writing recording medium 1225 of file and the control of reading from recording medium 1225. NoteRecording medium 1225 be for example can be on camera main-body the recording medium such as memory cards of disassembled and assembled freely, butBeing not limited to this, can be to be also built in hard disk in camera main-body etc.
Lcd driver 1210 is connected with LCD1226, will be by image processor 1215 picture number after treatmentAccording to being stored in SDRAM1218, need to show time, read the view data of SDRAM1218 storage andThe upper demonstration of LCD1226, or the view data that jpeg processor 1216 compressed is stored inSDRAM1218, in the time that needs show, jpeg processor 1216 reads the compression of SDRAM1218View data, then decompress, the view data after decompressing is shown by LCD1226.
LCD1226 is configured in the back side of camera main-body and carries out image demonstration. This LCD1226LCD), butBe not limited to this, also can adopt the various display floaters (LCD1226) such as organic EL, but be not limited to this,Also can adopt the various display floaters such as organic EL.
Based on the electrical structure schematic diagram of above-mentioned mobile terminal hardware configuration and camera, figure of the present invention is proposedEach embodiment of picture treating apparatus.
As shown in Figure 3, Fig. 3 is the high-level schematic functional block diagram of image processing apparatus the first embodiment of the present invention.
It is emphasized that to one skilled in the art, functional block diagram shown in Fig. 3 is only oneThe exemplary plot of individual preferred embodiment, those skilled in the art is around the merit of the image processing apparatus shown in Fig. 3Energy module, can carry out supplementing of new functional module easily; The title of each functional module is self-defined title,Only, for auxiliary each program function piece of understanding this image processing apparatus, be not used in and limit skill of the present inventionArt scheme, the core of technical solution of the present invention is, the merit that the functional module of define name will be reached separatelyEnergy.
The present embodiment provides a kind of image processing apparatus, and described image processing apparatus comprises:
The first acquisition module 10, for obtaining respectively mark to be embedded and original image, by described to be embeddedMark and described original image are transformed to respectively frequency domain data;
In the present embodiment, the image described mark being formed and described picture use image conversion algorithm to enterWhen line translation, can adopt the image conversion algorithms such as discrete cosine transform, wavelet transformation, Fourier transform.
With reference to Fig. 4, described the first acquisition module 10 comprises:
Display unit 11, in the time receiving encrypted instruction, shows the page of input mark to be embedded;
In the present embodiment, user can select the picture that is stored in described mobile terminal to identify embedding,Now described mobile terminal can provide an interface of inputting special identifier for user, and user can be describedInterface touch-screen input special identifier, confirms to embed after mark user, the image that described mark is formed andDescribed picture uses image conversion algorithm to convert, and obtains the frequency domain data of described identification image and picture.
Be understandable that, user can embed and be with distinctive mark, and user can be in described movementThe mark of terminal touch-screen input arbitrary form, comprises scribble and signature, confirms user after the mark of input,The described mark of user's input is converted to image by described mobile terminal.
Acquisition module 12, in the time receiving the confirmation order, obtains respectively mark to be embedded and original graphPicture;
Processing unit 13, for being transformed to respectively frequency domain number by described mark to be embedded and described original imageAccording to.
Further, can be at the frequency of the pre-stored some marks of described mobile terminal or described some marksNumeric field data, user, in the time that original image is carried out to mark, without again inputting mark, can select acquiescenceMark embedded images, user, in the time that image is carried out to mark, can not carry out other operations, only needs to selectDefault identification, the described mark that afterwards described default identification is transformed to frequency domain data or selects according to userKnow and search the corresponding frequency domain data of having stored.
Further, in the present embodiment, after user takes pictures by described mobile terminal, can be certainlyThe moving mark picture of selecting acquiescence, obtains the frequency domain data of described default identification picture conversion or searches and depositThe frequency domain data of the described default identification picture of storage.
Merge module 20, for the described frequency domain data of described original image is decomposed at least one times,Obtain the low frequency part of described original image frequency domain data, the frequency domain data of described mark to be embedded is embeddedDescribed low frequency part;
Frequency domain data to described original image is analyzed, and decomposes at least one times, by described originalPicture breakdown is subgraph and four subgraphs of low frequency subgraph in level, vertical and diagonal, described waterThe high-frequency region that subgraph flat, vertically and in diagonal is described original image, described low frequency subgraphBe the low frequency region of described original image, choose described low frequency region, using described low frequency region as embeddingEnter the region of described identification image, the frequency domain data of described mark to be embedded is embedded to described low frequency part.
In the present embodiment, be that frequency domain data embeds by the mark of user's input through image conversion algorithmic transformationThe affiliated region that embeds, i.e. the low frequency region of described original image frequency domain, obtains embedding the figure picture frequency after markNumeric field data, is used the inverse transformation algorithm of described image conversion afterwards, reconstructs the image that embeds described mark.
The first reconstructed module 30, for by the image frequency domain number of the frequency domain data of described embedding mark to be embeddedAccording to carrying out Image Reconstruction, embedded the image of mark.
Be reconstructed into image by embedding the frequency domain of described mark through image conversion algorithm, described in be identified at compared with high scoreDistinguish the low frequency region of the described image of lower embedding, do not affect the original display effect of described image, described markAfter embedded images, naked eyes are invisible, and user can use the image of described embedding mark deliver or divideEnjoy.
In the present embodiment, after using described mobile terminal to take pictures, can be at the low frequency range of described photoTerritory embeds user's mark, does not affect the display effect of described photo, the hiding embedding institute of described markState photo, be difficult for being found by other people, and then revise described mark, protected more safely photoCopyright.
Further, with reference to Fig. 5, propose image processing apparatus of the present invention second based on the first embodiment and implementExample, in the present embodiment, adopts wavelet transformation respectively described mark to be embedded and described original image to be dividedBe not transformed to frequency domain data, and the frequency domain of described original image is decomposed at least one times, obtain instituteState the low frequency part of original image frequency domain data.
Described merge module 20 comprises:
The first resolving cell 21, for decompose described original image frequency domain data by LPF, obtainsThe first low frequency part of described original image frequency domain data;
In the present embodiment, adopt wavelet transformation to analyze the frequency domain data of described original image, enterRow decomposes for the first time, by described original image be decomposed into subgraph in level, vertical and diagonal andFour subgraphs of low frequency subgraph, the subgraph in described level, vertical and diagonal is described original imageHigh-frequency region, with reference to Fig. 6, after first order conversion, HH1 is that high-frequency information generally shows 45 degree in imageDiagonal information with 135 degree; LL1 is low-frequency information, shows the profile information of image, HL1With LH1 is the information between high and low frequency, HL1 can show the vertical information in image, LH1Show the horizontal information in image. LL1 is called low frequency part on the whole, HH1, and HL1 and LH1 claimFor HFS. Described low frequency subgraph LL1 is the first low frequency region of described original image, chooses instituteState the first low frequency region LL1, described the first low frequency range LL1 territory is decomposed for the second time.
The second resolving cell 22, for decompose described the first low frequency part by LPF, described in obtainingThe second low frequency part of original image frequency domain data;
Adopt wavelet transformation to analyze described the first low frequency region, decompose for the second time, described in inciting somebody to actionThe first low frequency region is decomposed into subgraph and four subgraphs of low frequency subgraph in level, vertical and diagonal,Subgraph in described level, vertical and diagonal is high-frequency region, described in described low frequency subgraph isThe second low frequency region, with reference to Fig. 7, after described the first low frequency region LL1 second level conversion, HH2 is highFrequently information generally shows 45 degree and 135 directional informations of spending in image; LL2 is low-frequency information, shows figureThe profile information of picture, HL2 and LH2 are the information between high and low frequency, HL2 can show imageIn vertical information, LH2 shows the horizontal information in image. Choosing described the second low frequency region LL2 doesFor embedding region.
Embedded unit 23, for obtaining default embedment strength value, described in inciting somebody to action according to described embedment strength valueThe frequency domain data of mark to be embedded embeds described the second low frequency part.
In the present embodiment, original image is changed to frequency domain from transform of spatial domain, through secondary wavelet transformation,Described original image is carried out, after a wavelet transformation decomposition, obtaining first of described original image frequency domainLow frequency region, carries out the decomposition of secondary wavelet transformation to described the first low frequency region, obtains the second low frequency region,Embedding region using described the second low frequency region as mark, by the frequency domain number after described mark wavelet transformationAccording to embedding described the second low frequency region, afterwards the frequency domain of the described original image that embeds described mark is carried outWavelet inverse transformation, wavelet reconstruction can obtain embedding the image after mark, at the secondary low frequency range of imageTerritory embeds described mark, less on the display effect impact of image, is more difficultly discovered by naked eyes.
Further, with reference to Fig. 8, based on the second embodiment, image processing apparatus of the present invention the 3rd enforcement is proposedExample, in the present embodiment, described image processing apparatus also comprises:
Logging modle 40, for obtaining the status information of described mark to be embedded Set For Current or default;
In the present embodiment, user inputs after mark at described mobile terminal, the described mark of formation demonstrationMark picture, described mark picture can zoom in or out, and described mark picture can pull arbitrarilyBe presented at arbitrary position of described mobile terminal screen, receive user really accept one's fate order after, record instituteState the size of mark picture, coordinate position, the status informations such as color.
Memory module 50, for status information and the described mark that embedded of mark to be embedded described in association storeThe image of knowing.
In the present embodiment, the status information of the mark of described embedding original image and the described mark that embeddedImage association store, in the time need to confirming the copyright of the image after described embedding mark, to described imageThe identical wavelet transformation of number of times identifying while embedding decomposes, and extracts the little of low frequency region that mark embedsWave system number, the pixel value after image conversion is exactly the coefficient value of wavelet transformation, carries according to described wavelet coefficientGet the frequency domain data of described mark, and then carry out wavelet reconstruction, obtain described original image and described mark,Obtain embed before mark, record described in be identified at the status information of described original image, by described markImage Display, on described original image, can be confirmed according to described mark picture the copyright of described image.
In the present embodiment, record the status information that described mark to be embedded arranges, when needed, by instituteState the picture breakdown reconstruct embedding after mark, obtain described original image and described mark, by described markBe presented on original image according to described status information, specify the copyright of described original image.
Further, with reference to Fig. 9, based on the second embodiment, image processing apparatus of the present invention the 4th enforcement is proposedExample, in the present embodiment, described image processing apparatus also comprises:
The second acquisition module 60, in the time receiving decryption command, has embedded the figure of mark described in obtainingPicture;
In the present embodiment, in the time that needs are confirmed to have embedded the copyright of image of mark, can pass through describedThe image that has embedded mark is decrypted, and extracts the mark that embeds described image;
Extraction module 70, for dividing the described image that has embedded mark image conversion when embedding markThe number of times of separating, the image conversion that carries out same number decomposes, and extracts embedding according to described embedment strength valueThe frequency domain data of the described mark entering;
What while in the present embodiment, carrying out with embedding mark to the image of embedding mark, image conversion decomposed is inferiorThe wavelet transformation of number same number decomposes, and obtains the low frequency part of the described frequency domain data that embeds described mark,According to the intensity level that embeds mark, calculate the frequency domain data of described mark, separate and to obtain described markThe frequency domain data of frequency domain data and described original image.
The second reconstructed module 80, for by the frequency domain data of the described mark to be embedded extracting and extractingThe image frequency domain data of the frequency domain data of described mark to be embedded are reconstructed, and obtain described mark and originalImage.
In the present embodiment, described separation is obtained to the frequency domain data of described mark and described original imageFrequency domain data carries out wavelet inverse transformation, and described frequency domain data is reconstructed into mark and original image.
In the present embodiment, in the time that needs are confirmed the copyright of the image that embeds mark, can obtain by decipheringThe mark embedding, by described mark from separation of images out, conveniently shows the copyright of described image.
The present invention further provides a kind of image processing method.
With reference to Figure 10, Figure 10 is the schematic flow sheet of image processing method the first embodiment of the present invention.
The present embodiment provides a kind of image processing method, and described image processing method comprises step:
Step S10, obtains respectively mark to be embedded and original image, by described mark to be embedded and described formerBeginning image is transformed to respectively frequency domain data;
In the present embodiment, the image described mark being formed and described picture use image conversion algorithm to enterWhen line translation, can adopt the image conversion algorithms such as discrete cosine transform, wavelet transformation, Fourier transform.
With reference to Figure 11, described step S10 also comprises step:
Step S11, in the time receiving encrypted instruction, shows the page of input mark to be embedded;
In the present embodiment, user can select the picture that is stored in described mobile terminal to identify embedding,Now described mobile terminal can provide an interface of inputting special identifier for user, and user can be describedInterface touch-screen input special identifier, confirms to embed after mark user, the image that described mark is formed andDescribed picture uses image conversion algorithm to convert, and obtains the frequency domain data of described identification image and picture.
Be understandable that, user can embed and be with distinctive mark, and user can be in described movementThe mark of terminal touch-screen input arbitrary form, comprises scribble and signature, confirms user after the mark of input,The described mark of user's input is converted to image by described mobile terminal.
Step S12, in the time receiving the confirmation order, obtains respectively mark to be embedded and original image;
Step S13, is transformed to respectively frequency domain data by described mark to be embedded and described original image.
Further, can be at the frequency of the pre-stored some marks of described mobile terminal or described some marksNumeric field data, user, in the time that original image is carried out to mark, without again inputting mark, can select acquiescenceMark embedded images, user, in the time that image is carried out to mark, can not carry out other operations, only needs to selectDefault identification, the described mark that afterwards described default identification is transformed to frequency domain data or selects according to userKnow and search the corresponding frequency domain data of having stored.
Further, in the present embodiment, after user takes pictures by described mobile terminal, can be certainlyThe moving mark picture of selecting acquiescence, obtains the frequency domain data of described default identification picture conversion or searches and depositThe frequency domain data of the described default identification picture of storage.
Step S20, decomposes the described frequency domain data of described original image, described in obtaining at least one timesThe low frequency part of original image frequency domain data, embeds described low frequency by the frequency domain data of described mark to be embeddedPart;
Frequency domain data to described original image is analyzed, and decomposes at least one times, by described originalPicture breakdown is subgraph and four subgraphs of low frequency subgraph in level, vertical and diagonal, described waterThe high-frequency region that subgraph flat, vertically and in diagonal is described original image, described low frequency subgraphBe the low frequency region of described original image, choose described low frequency region, using described low frequency region as embeddingEnter the region of described identification image, the frequency domain data of described mark to be embedded is embedded to described low frequency part.
In the present embodiment, be that frequency domain data embeds by the mark of user's input through image conversion algorithmic transformationThe affiliated region that embeds, i.e. the low frequency region of described original image frequency domain, obtains embedding the figure picture frequency after markNumeric field data, is used the inverse transformation algorithm of described image conversion afterwards, reconstructs the image that embeds described mark.
Step S30, carries out Image Reconstruction by the image frequency domain data that embed described mark frequency domain data, obtainsEmbed the image of mark.
Be reconstructed into image by embedding the frequency domain of described mark through image conversion algorithm, described in be identified at compared with high scoreDistinguish the low frequency region of the described image of lower embedding, do not affect the original display effect of described image, described markAfter embedded images, naked eyes are invisible, and user can use the image of described embedding mark deliver or divideEnjoy.
In the present embodiment, after using described mobile terminal to take pictures, can be at the low frequency range of described photoTerritory embeds user's mark, does not affect the display effect of described photo, the hiding embedding institute of described markState photo, be difficult for being found by other people, and then revise described mark, protected more safely photoCopyright.
Further, with reference to Figure 12, based on the first embodiment, image processing apparatus second of the present invention is proposed realExecute example, in the present embodiment, described step S20 comprises:
Step S21, decomposes described original image frequency domain data by LPF, obtains described original imageThe first low frequency part of frequency domain data;
In the present embodiment, adopt wavelet transformation to analyze the frequency domain data of described original image, enterRow decomposes for the first time, by described original image be decomposed into subgraph in level, vertical and diagonal andFour subgraphs of low frequency subgraph, the subgraph in described level, vertical and diagonal is described original imageHigh-frequency region, with reference to Fig. 6, after first order conversion, HH1 is that high-frequency information generally shows 45 degree in imageDiagonal information with 135 degree; LL1 is low-frequency information, shows the profile information of image, HL1With LH1 is the information between high and low frequency, HL1 can show the vertical information in image, LH1Show the horizontal information in image. LL1 is called low frequency part on the whole, HH1, and HL1 and LH1 claimFor HFS. Described low frequency subgraph LL1 is the first low frequency region of described original image, chooses instituteState the first low frequency region LL1, described the first low frequency range LL1 territory is decomposed for the second time.
Step S22, decomposes described the first low frequency part by LPF, obtains described original image frequency domainThe second low frequency part of data;
Adopt wavelet transformation to analyze described the first low frequency region, decompose for the second time, described in inciting somebody to actionThe first low frequency region is decomposed into subgraph and four subgraphs of low frequency subgraph in level, vertical and diagonal,Subgraph in described level, vertical and diagonal is high-frequency region, described in described low frequency subgraph isThe second low frequency region, with reference to Fig. 7, after described the first low frequency region LL1 second level conversion, HH2 is highFrequently information generally shows 45 degree and 135 directional informations of spending in image; LL2 is low-frequency information, shows figureThe profile information of picture, HL2 and LH2 are the information between high and low frequency, HL2 can show imageIn vertical information, LH2 shows the horizontal information in image. Choosing described the second low frequency region LL2 doesFor embedding region.
Step S23, obtains default embedment strength value, according to described embedment strength value by described mark to be embeddedThe frequency domain data of knowing embeds described the second low frequency part.
In the present embodiment, original image is changed to frequency domain from transform of spatial domain, through secondary wavelet transformation,Described original image is carried out, after a wavelet transformation decomposition, obtaining first of described original image frequency domainLow frequency region, carries out the decomposition of secondary wavelet transformation to described the first low frequency region, obtains the second low frequency region,Embedding region using described the second low frequency region as mark, by the frequency domain number after described mark wavelet transformationAccording to embedding described the second low frequency region, afterwards the frequency domain of the described original image that embeds described mark is carried outWavelet inverse transformation, wavelet reconstruction can obtain embedding the image after mark, at the secondary low frequency range of imageTerritory embeds described mark, less on the display effect impact of image, is more difficultly discovered by naked eyes.
Further, with reference to Figure 13, based on the first or second embodiment, image processing apparatus of the present invention is proposedThe 3rd embodiment, in the present embodiment, before described step S10, described image processing method also comprisesStep:
Step S40, obtain Set For Current or default described mark status information;
In the present embodiment, user inputs after mark at described mobile terminal, the described mark of formation demonstrationMark picture, described mark picture can zoom in or out, and described mark picture can pull arbitrarilyBe presented at arbitrary position of described mobile terminal screen, receive user really accept one's fate order after, record instituteState the size of mark picture, coordinate position, the status informations such as color.
After described step S30, comprise:
Step S50, the status information and the described image that has embedded mark that identify described in association store.
In the present embodiment, the status information of the mark of described embedding original image and the described mark that embeddedImage association store, in the time need to confirming the copyright of the image after described embedding mark, to described imageThe identical wavelet transformation of number of times identifying while embedding decomposes, and extracts the little of low frequency region that mark embedsWave system number, the pixel value after image conversion is exactly the coefficient value of wavelet transformation, carries according to described wavelet coefficientGet the frequency domain data of described mark, and then carry out wavelet reconstruction, obtain described original image and described mark,Obtain embed before mark, record described in be identified at the status information of described original image, by described markImage Display, on described original image, can be confirmed according to described mark picture the copyright of described image.
In the present embodiment, record the status information that described mark to be embedded arranges, when needed, by instituteState the picture breakdown reconstruct embedding after mark, obtain described original image and described mark, by described markBe presented on original image according to described status information, specify the copyright of described original image.
Further, with reference to Figure 14, execute example based on second and propose image processing method of the present invention the 4th enforcementExample, in the present embodiment, after described step S30, described image processing method also comprises:
Step S60, in the time receiving decryption command, has embedded the image of mark described in obtaining;
In the present embodiment, in the time that needs are confirmed to have embedded the copyright of image of mark, can pass through describedThe image that has embedded mark is decrypted, and extracts the mark that embeds described image;
Step S70, what when the described image that has embedded mark is identified according to embedding, image conversion decomposed is inferiorNumber, the image conversion that carries out same number decomposes, and extracts the institute having embedded according to described embedment strength valueState the frequency domain data of mark;
What while in the present embodiment, carrying out with embedding mark to the image of embedding mark, image conversion decomposed is inferiorThe wavelet transformation of number same number decomposes, and obtains the low frequency part of the described frequency domain data that embeds described mark,According to the intensity level that embeds mark, calculate the frequency domain data of described mark, separate and to obtain described markThe frequency domain data of frequency domain data and described original image.
Step S80, by the frequency domain data of the described mark to be embedded extracting with extract described mark to be embeddedThe image frequency domain data of the frequency domain data of knowing are reconstructed, and obtain described mark and original image.
In the present embodiment, described separation is obtained to the frequency domain data of described mark and described original imageFrequency domain data carries out wavelet inverse transformation, and described frequency domain data is reconstructed into mark and original image.
In the present embodiment, in the time that needs are confirmed the copyright of the image that embeds mark, can obtain by decipheringThe mark embedding, by described mark from separation of images out, conveniently shows the copyright of described image.
It should be noted that, in this article, term " comprises ", " comprising " or its any other variantBe intended to contain comprising of nonexcludability, thus make to comprise a series of key elements process, method, article orPerson's device not only comprises those key elements, but also comprises other key elements of clearly not listing, or alsoBe included as the intrinsic key element of this process, method, article or device. There is no the feelings of more restrictionsUnder condition, by statement " comprising ... " limit key element, and be not precluded within comprise this key element process,In method, article or device, also there is other identical element.
Through the above description of the embodiments, those skilled in the art can be well understood to above-mentionedThe mode that embodiment method can add essential general hardware platform by software realizes, and can certainly lead toCross hardware, but in a lot of situation, the former is better embodiment. Based on such understanding, of the present inventionThe part that technical scheme contributes to prior art in essence in other words can be with the form body of software productReveal to come, this computer software product is stored in a storage medium (as ROM/RAM, magnetic disc, lightDish) in, (can be mobile phone, computer, serves in order to make a station terminal equipment to comprise some instructionsDevice, air-conditioner, or the network equipment etc.) carry out the method described in each embodiment of the present invention.
These are only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every utilizationThe equivalent structure that description of the present invention and accompanying drawing content are done or the conversion of equivalent flow process, or directly or indirectly transportBe used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. an image processing apparatus, is characterized in that, described image processing apparatus comprises:
The first acquisition module, for obtaining respectively mark to be embedded and original image, by described mark to be embeddedKnowledge and described original image are transformed to respectively frequency domain data;
Merge module, for the described frequency domain data of described original image is decomposed at least one times,To the low frequency part of described original image frequency domain data, the frequency domain data of described mark to be embedded is embedded to instituteState low frequency part;
The first reconstructed module, for by the image frequency domain data of the frequency domain data of described embedding mark to be embeddedCarry out Image Reconstruction, embedded the image of mark.
2. image processing apparatus as claimed in claim 1, is characterized in that, described first obtainsModule comprises:
Display unit, in the time receiving encrypted instruction, shows the page of input mark to be embedded;
Acquiring unit, in the time receiving the confirmation order, obtains respectively mark to be embedded and original image;
Processing unit, for being transformed to respectively frequency domain data by described mark to be embedded and described original image.
3. image processing apparatus as claimed in claim 1, is characterized in that, described merge module comprises:
The first resolving cell, for decompose described original image frequency domain data by LPF, obtains instituteState the first low frequency part of original image frequency domain data;
The second resolving cell, for decompose described the first low frequency part by LPF, obtains described formerThe second low frequency part of beginning image frequency domain data;
Embedded unit, for obtaining default embedment strength value, treats described in inciting somebody to action according to described embedment strength valueThe frequency domain data that embeds mark embeds described the second low frequency part.
4. image processing apparatus as claimed in claim 1, is characterized in that, described image processing apparatusAlso comprise:
Logging modle, for obtaining the status information of described mark to be embedded Set For Current or default;
Memory module, for status information and the described mark that embedded of mark to be embedded described in association storeImage.
5. image processing apparatus as claimed in claim 3, is characterized in that, described image processing apparatusAlso comprise:
The second acquisition module, in the time receiving decryption command, has embedded the image of mark described in obtaining;
Extraction module, for decomposing the described image that has embedded mark image conversion when embedding markNumber of times, carry out same number image conversion decompose, extract and embed according to described embedment strength valueThe frequency domain data of described mark to be embedded;
The second reconstructed module, for by the frequency domain data of the described mark to be embedded extracting with extract instituteThe image frequency domain data of stating the frequency domain data of mark to be embedded are reconstructed, and obtain described mark and original graphPicture.
6. an image processing method, is characterized in that, described image processing method comprises step:
Obtain respectively mark to be embedded and original image, described mark to be embedded and described original image are dividedBe not transformed to frequency domain data;
The described frequency domain data of described original image is decomposed at least one times, obtain described original imageThe low frequency part of frequency domain data, embeds described low frequency part by the frequency domain data of described mark to be embedded;
The image frequency domain data of the frequency domain data that embeds described mark to be embedded are carried out to Image Reconstruction, obtainEmbed the image of mark.
7. image processing method as claimed in claim 6, is characterized in that, described obtaining respectively treated embeddingInlet identity and original image, be transformed to respectively frequency domain data by described mark to be embedded and described original imageStep before also comprise step:
In the time receiving encrypted instruction, show the page of input mark to be embedded;
In the time receiving the confirmation order, obtain respectively mark to be embedded and original image;
Described mark to be embedded and described original image are transformed to respectively to frequency domain data.
8. image processing method as claimed in claim 6, is characterized in that, described by described original graphThe described frequency domain data of picture decomposes at least one times, obtains the low frequency portion of described original image frequency domain dataPoint, the step that the frequency domain data of described mark to be embedded is embedded to described low frequency part comprises:
Decompose described original image frequency domain data by LPF, obtain described original image frequency domain dataThe first low frequency part;
Decompose described the first low frequency part by LPF, obtain of described original image frequency domain dataTwo low frequency part;
Obtain default embedment strength value, according to described embedment strength value by the frequency domain of described mark to be embeddedData embed described the second low frequency part.
9. image processing method as claimed in claim 6, is characterized in that, described obtaining respectively treated embeddingInlet identity and original image, be transformed to respectively frequency domain data by described mark to be embedded and described original imageStep before, described image processing method also comprises step:
Obtain the status information of described mark to be embedded Set For Current or default;
After the step of the described image that has been embedded mark, comprise:
The status information of mark to be embedded and the described image that has embedded mark described in association store.
10. image processing method as claimed in claim 8, is characterized in that, described in embeddedAfter the step of the image of mark, described image processing method also comprises:
In the time receiving decryption command, described in obtaining, embed the image of mark;
The number of times that when the described image that has embedded mark is identified according to embedding, image conversion decomposes, carries out phaseImage conversion with number of times decomposes, and extracts the mark described to be embedded having embedded according to described embedment strength valueThe frequency domain data of knowing;
By the frequency domain data of the described mark to be embedded extracting and the frequency domain that extracts described mark to be embeddedThe image frequency domain data of data are reconstructed, and obtain described mark and original image.
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