WO2019095176A1 - Procédé et appareil de détection d'informations basés sur une valeur de différence d'énergie de paquet et dispositif de réception - Google Patents

Procédé et appareil de détection d'informations basés sur une valeur de différence d'énergie de paquet et dispositif de réception Download PDF

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Publication number
WO2019095176A1
WO2019095176A1 PCT/CN2017/111217 CN2017111217W WO2019095176A1 WO 2019095176 A1 WO2019095176 A1 WO 2019095176A1 CN 2017111217 W CN2017111217 W CN 2017111217W WO 2019095176 A1 WO2019095176 A1 WO 2019095176A1
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WIPO (PCT)
Prior art keywords
carrier information
information
value
maximum value
difference
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PCT/CN2017/111217
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English (en)
Chinese (zh)
Inventor
谢宁
谭杰
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深圳大学
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Priority to PCT/CN2017/111217 priority Critical patent/WO2019095176A1/fr
Publication of WO2019095176A1 publication Critical patent/WO2019095176A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • H04N19/467—Embedding additional information in the video signal during the compression process characterised by the embedded information being invisible, e.g. watermarking
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00—General purpose image data processing

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an information detection method, apparatus, and receiving device based on packet energy difference.
  • Substitute steganography means that the original information is embedded in the secret information after channel coding, and the secret information is directly replaced with the original part information to achieve the purpose of information hiding.
  • the chi-square detection method is the earliest detection algorithm for the detection of Least Significant Bit (LSB) steganography, which tests the image by defining a chi-square statistic.
  • the probability of statistical characteristics enables detection of sequential LSB replacement, but does not detect LSB replacement at random locations.
  • the detection algorithm for LSB matching basically adopts methods such as neural network and pattern recognition.
  • the feature set is trained to extract effective features, and then the joint information of multiple features is used to detect the hidden information.
  • these methods are computationally intensive.
  • the test results are not precise enough and have limitations.
  • the embodiment of the invention discloses a method, a device and a receiving device for detecting information based on packet energy difference, which can accurately detect the secret information.
  • a first aspect of the embodiments of the present invention discloses an information detection method based on a packet energy difference, which includes:
  • the performing, by the related processing on the first carrier information, sequentially obtaining the second carrier information, the original carrier information, and the third carrier information includes:
  • the original carrier information is remodulated to obtain third carrier information.
  • the method further includes:
  • the preset threshold is set according to a minimum distance of a constellation point and a pre-judgment of a received noise.
  • a second aspect of the embodiments of the present invention discloses an information detecting apparatus, including:
  • a receiving unit configured to receive the first carrier information that is matched by the channel
  • a processing unit configured to perform correlation processing on the first carrier information, and sequentially obtain second carrier information, original carrier information, and third carrier information;
  • a comparison determining unit configured to compare the second carrier information with the original carrier information to confirm Determining the second carrier information at the same location and different locations as the original carrier information
  • An extraction determining unit configured to extract a first value on the same location of the first carrier information and extract a second value on the same location of the third carrier information, and determine the first a first maximum value of an absolute value of a difference between the value and the second value;
  • the extraction determining unit is further configured to extract a third value at the different position of the first carrier information and extract a fourth value at the different position of the third carrier information, and determine a second maximum value of the absolute value of the difference between the third value and the fourth value;
  • a determining unit configured to determine whether a difference between the second maximum value and the first maximum value is greater than a preset threshold
  • the determining unit is configured to determine that the secret information exists in the first carrier information when the determining unit determines that the difference between the second maximum value and the first maximum value is greater than the preset threshold.
  • the processing unit performs related processing on the first carrier information, and sequentially obtains second carrier information, original carrier information, and third carrier information, including :
  • the original carrier information is remodulated to obtain third carrier information.
  • the determining unit is further configured to: when the determining unit determines that the difference between the second maximum value and the first maximum value is smaller than Or equal to the preset threshold, determining that there is no secret information in the first carrier information.
  • the preset threshold is set according to a minimum distance of a constellation point and a pre-judgment of a received noise.
  • a third aspect of the embodiments of the present invention discloses a receiving device, where the receiving device includes a processor and a memory, and the processor executes the computer program stored in the memory to implement the packet-based energy according to any one of the foregoing first aspects. Information detection method for difference.
  • a computer readable storage medium storing at least one instruction, the at least one instruction being executed by a processor to implement the Information detection method for packet energy difference.
  • the embodiment of the invention has the following beneficial effects:
  • the receiving device may receive the first carrier information that is matched by the channel, perform related processing on the first carrier information, and obtain the second carrier information, the original carrier information, and the third carrier information in sequence; Second carrier information and the original carrier information to determine the same location and different location of the second carrier information as the original carrier information; extracting the first location on the same location of the first carrier information And a second value at the same position at which the third carrier information is extracted, and determining a first maximum value of an absolute value of a difference between the first value and the second value; extracting the first a third value at the different location of the carrier information and a fourth value at the different location of the third carrier information, and determining a difference between the third value and the fourth value a second maximum value of the absolute value; determining whether the difference between the second maximum value and the first maximum value is greater than a preset threshold; if yes, determining that the first carrier information is hidden Information.
  • the receiving device may perform related processing on the received first carrier information, and sequentially obtain the second carrier information, the original carrier information, and the third carrier information, and further, the first carrier information and the second The carrier information, the original carrier information, and the third carrier information are compared and analyzed to determine that the secret information exists in the first carrier information, so that the secret information can be accurately detected.
  • FIG. 1 is a diagram of a communication model for replacing steganography disclosed in an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a maximum noise difference and a signal to noise ratio at the same position and at different positions according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a detection success rate and a signal to noise ratio according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of another difference in maximum noise and signal to noise ratio at the same position and at different positions according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of another detection success rate and a signal to noise ratio according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of an information detecting apparatus according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a receiving device according to an embodiment of the present invention.
  • the embodiment of the invention discloses a method, a device and a receiving device for detecting information based on packet energy difference, which can accurately detect the secret information.
  • the details are described below in conjunction with the drawings.
  • FIG. 1 is a diagram of a communication model for replacing steganography disclosed in an embodiment of the present invention.
  • the alternative steganographic communication model can include two processes: a transmitting process and a receiving process.
  • the sending process is mainly performed by the sending device.
  • the sending device may include a base station or a user equipment.
  • a base station e.g., an access point
  • the base station can refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), the embodiment of the present invention is not limited.
  • User equipment may include, but is not limited to, a smart phone, a notebook computer, a personal computer (PC), a personal digital assistant (PDA), a mobile internet device (MID), a wearable device (such as a smart watch).
  • the operating system of the user device may include, but is not limited to, an Android operating system, an IOS operating system, a Symbian operating system, and a BlackBerry operating system.
  • the Windows Phone 8 operating system and the like are not limited in the embodiment of the present invention.
  • the transmitting device is divided into two paths, one is that the carrier information is encoded, and the other is that the secret information is encoded. After the two are encoded, the secret information is embedded in the carrier information, modulated, and then sent to the channel. The channel is sent to the receiving device.
  • the receiving process is mainly performed by the receiving device.
  • the receiving device may include a base station or a user equipment.
  • a base station e.g., an access point
  • the base station can refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), the embodiment of the present invention is not limited.
  • BTS Base Transceiver Station
  • NodeB base station
  • NodeB evolved base station
  • LTE NodeB or eNB or e-NodeB, evolutional Node B
  • User equipment may include, but is not limited to, a smart phone, a notebook computer, a personal computer (PC), a personal digital assistant (PDA), Mobile Internet devices (MIDs), wearable devices (such as smart watches, smart bracelets, smart glasses) and other electronic devices, wherein the operating system of the user device may include but is not limited to Android operating system, IOS operation
  • the system, the Symbian (Symbian) operating system, the Blackberry (Blackberry) operating system, the Windows Phone 8 operating system, and the like are not limited in the embodiment of the present invention.
  • the demodulated signal is extracted and then decoded to obtain the secret information, and then the signal after the secret information is extracted is decoded to obtain the carrier information.
  • the specific embedding method of the secret information may be BINARY PHASE SHIFT KEYING (BPSK) as an example.
  • the carrier information is encoded into 0, 1 sequence, and the secret information is also 0, 1 sequence.
  • the secret information can randomly replace some positions of the carrier information to hide the information.
  • the carrier information 0 can be replaced by the secret information 1
  • the carrier information 1 can be replaced by the secret information 0, after BPSK is - 1 changes to 1, 1 changes to -1.
  • the number of bits of the secret information needs to be smaller than the number of bits that can be corrected by the error correction capability of the carrier information. For example, suppose that the encoded information bits have k bits, for a total of n symbols, then the number of bits that can be corrected Take an integer, so the number of bits of the secret information is less than t in order to replace the steganography.
  • FIG. 2 is a schematic flowchart diagram of an information detection method based on packet energy difference disclosed in an embodiment of the present invention. As shown in FIG. 2, the information detection method based on the packet energy difference may include the following steps:
  • Step 201 The receiving device receives the first carrier information that is matched by the channel.
  • Substitute steganography means that the original information is embedded in the secret information after channel coding, and the secret information is directly replaced with the original part information to achieve the purpose of information hiding.
  • the transmitting device transmits the bearer-replaced bearer information through the channel, and the receiving device can obtain the first bearer information after the channel matching, wherein the first bearer information is the coded and modulated information.
  • the channel is a fading channel, that is, a channel whose channel fades with distance, If the distance is constant, the channel is constant.
  • Y is the carrier information after multiplying channel H
  • conj(H) is the conjugate of H
  • noise is noise
  • Y1 is the first carrier information
  • Step 202 The receiving device performs related processing on the first carrier information, and sequentially obtains second carrier information, original carrier information, and third carrier information.
  • the manner in which the receiving device performs related processing on the first carrier information, and the second carrier information, the original carrier information, and the third carrier information are sequentially obtained may be:
  • the original carrier information is remodulated to obtain third carrier information.
  • the hidden information that may be hidden in the second carrier information can be erased, and after re-encoding, the original carrier information can be obtained.
  • the first carrier information may include secret information
  • the third carrier information does not include secret information.
  • Step 203 The receiving device compares the second carrier information with the original carrier information to determine a location and a different location where the second carrier information is the same as the original carrier information.
  • the second carrier information and the original carrier information are each represented by a multi-bit value (such as 0, 1).
  • the receiving device can compare the second carrier information with the original carrier information to determine the same location and different locations of the second carrier information as the original carrier information. For example, if the second carrier information is 00, the original carrier information is 01, and the second carrier information and the original carrier information are in the same position, the second carrier information and the The original carrier information has a different position in the second place.
  • Step 204 The receiving device extracts a first value on the same location of the first carrier information, and extracts a second value on the same location of the third carrier information, and determines the first value. a first maximum value of the absolute value of the difference from the second value.
  • random noise may be included at the same location, and may be included at different locations. Random noise and hidden information.
  • the receiving device may extract the first value and extract the same value of the first carrier information.
  • a second value at the same position of the third carrier information for example, assuming that the second carrier information and the original carrier information are in the same position, the second carrier information and The different location of the original bearer information is the second bit, and the receiving device may extract the first value on the first bit of the first bearer information and extract the second value on the first bit of the third bearer information.
  • the receiving device may determine a first maximum value of an absolute value of a difference between the first value and the second value.
  • the noise is random Gaussian noise, so the difference between the first value and the second value is a random variable, and the receiving device can determine the absolute value of the difference between the first value and the second value. The first maximum.
  • Step 205 The receiving device extracts a third value on the different location of the first carrier information, and extracts a fourth value on the different location of the third carrier information, and determines the third value. a second maximum value of the absolute value of the difference from the fourth value.
  • the receiving device after determining the same location and different locations of the second carrier information and the original carrier information, extracts a third value and the extraction location at the different locations of the first carrier information. a fourth value at the different position of the third carrier information, for example, assuming that the second carrier information and the original carrier information are in the same position, the second carrier information
  • the second location is determined by the receiving device, and the receiving device may extract a third value on the second bit of the first carrier information and a fourth value on the second bit of the third carrier information.
  • the receiving device may determine a second maximum value of the absolute value of the difference between the third value and the fourth value.
  • the noise is random Gaussian noise, so the difference between the third value and the fourth value is a random variable, and the receiving device can determine the absolute value of the difference between the third value and the fourth value.
  • the second maximum is the noise that is a random variable.
  • Step 206 The receiving device determines whether the difference between the second maximum value and the first maximum value is greater than a preset threshold. If yes, go to step 207. If no, go to step 208.
  • the preset threshold is set according to a minimum distance of the constellation point and a pre-judgment of the magnitude of the received noise.
  • the minimum distance of the constellation point is related to the modulation order. Generally, as the modulation order increases, the preset threshold gradually decreases. In addition, if the received noise decreases, the preset threshold gradually decreases.
  • the preset threshold when the modulation order is 2, the preset threshold is 1.5, and when the modulation order is 4, the preset threshold is 1.2.
  • Step 207 The receiving device determines that there is hidden information in the first carrier information, and ends the process.
  • Step 208 The receiving device determines that there is no secret information in the first carrier information.
  • FIG. 3 is a schematic diagram showing the difference of the maximum noise and the signal-to-noise ratio at the same position and different positions according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of the embodiment of the present invention.
  • the modulation order M 2
  • the abscissa SNR is the signal to noise ratio. It can be seen from Fig. 3 that the trend of the curve without hidden information and the curve with hidden information is different, that is, whether there is hidden information, the difference between the maximum noise and the signal-to-noise ratio at the same position and at different positions. It is different.
  • FIG. 4 is a schematic diagram showing the detection success rate and the signal-to-noise ratio of the secret information by using the detection method of the present invention.
  • the detection information of the present invention can accurately detect the secret information.
  • FIG. 5 is a schematic diagram showing the difference of the maximum noise and the signal-to-noise ratio at the same position and different positions according to the embodiment of the present invention
  • FIG. 6 is another embodiment of the present invention.
  • the modulation order M 4
  • the abscissa SNR is the signal to noise ratio. It can be seen from Fig. 5 that the trend of the curve without hidden information and the curve with hidden information is different, that is, whether there is hidden information, the difference between the maximum noise and the signal-to-noise ratio at the same position and at different positions. It is different.
  • Figure 6 is a detection method using the detection method of the present invention Schematic diagram of the detection success rate and signal-to-noise ratio of the secret information.
  • the detection success rate increases with the increase of the signal-to-noise ratio SNR.
  • the detection information of the present invention can accurately detect the secret information.
  • the receiving device may receive the first carrier information that is matched by the channel, and perform related processing on the first carrier information, and sequentially obtain the second carrier information, the original carrier information, and the third carrier information. Comparing the second carrier information with the original carrier information to determine the same location and different location of the second carrier information as the original carrier information; extracting the same location of the first carrier information a first value on the first value and a second value at the same position at which the third carrier information is extracted, and determining a first maximum value of an absolute value of a difference between the first value and the second value; Extracting a third value at the different location of the first carrier information and extracting a fourth value at the different location of the third carrier information, and determining the third value and the fourth Determining whether a difference between the second maximum value and the first maximum value is greater than a preset threshold; if yes, determining the first carrier letter There is hidden information in the interest.
  • the receiving device may perform related processing on the received first carrier information, and sequentially obtain the second carrier information, the original carrier information, and the third carrier information, and further, the first carrier information and the second The carrier information, the original carrier information, and the third carrier information are compared and analyzed to determine that the secret information exists in the first carrier information, so that the secret information can be accurately detected.
  • FIG. 7 is a schematic structural diagram of an information detecting apparatus according to an embodiment of the present invention.
  • the information detecting apparatus described in FIG. 7 may be used to perform some or all of the steps in the information detecting method described in FIG. 2 .
  • the information detecting apparatus may include:
  • the receiving unit 101 is configured to receive the first carrier information that is matched by the channel;
  • the processing unit 102 is configured to perform correlation processing on the first carrier information, and sequentially obtain second carrier information, original carrier information, and third carrier information;
  • a comparison determining unit 103 configured to compare the second carrier information with the original carrier information to determine a location and a different location of the second carrier information and the original carrier information;
  • An extraction determining unit 104 configured to extract a first value on the same location of the first carrier information and extract a second value on the same location of the third carrier information, and determine the first a first maximum value of an absolute value of a difference between the value and the second value;
  • the extraction determining unit 104 is further configured to extract a third value on the different location of the first carrier information and extract a fourth value on the different location of the third carrier information, and determine a second maximum value of the absolute value of the difference between the third value and the fourth value;
  • the determining unit 105 is configured to determine whether a difference between the second maximum value and the first maximum value is greater than a preset threshold
  • the determining unit 106 is configured to determine that the secret information exists in the first carrier information when the determining unit 105 determines that the difference between the second maximum value and the first maximum value is greater than the preset threshold.
  • the processing unit 102 performs related processing on the first carrier information, and sequentially obtains the second carrier information, the original carrier information, and the third carrier information, including:
  • the original carrier information is remodulated to obtain third carrier information.
  • the determining unit 106 is further configured to determine, when the determining unit 105 determines that the difference between the second maximum value and the first maximum value is less than or equal to the preset threshold. There is no hidden information in a carrier information.
  • the preset threshold is set according to a minimum distance of the constellation point and a pre-judgment of the size of the received noise.
  • the information detecting apparatus described in FIG. 7 is configured to receive the first carrier information that is matched by the channel, and perform related processing on the first carrier information, and sequentially obtain the second carrier information, the original carrier information, and the third carrier information; Comparing the second carrier information with the original carrier information to determine the same location and different location of the second carrier information as the original carrier information; extracting the same location of the first carrier information a first value and a second value at the same position at which the third carrier information is extracted, and determining a first maximum value of an absolute value of a difference between the first value and the second value; extracting The different locations of the first carrier information a third value and a fourth value at the different position of the third carrier information, and determining a second maximum value of the absolute value of the difference between the third value and the fourth value; Determining whether a difference between the second maximum value and the first maximum value is greater than a preset threshold; if yes, determining that the first carrier information has secret information.
  • the receiving device may perform related processing on the received first carrier information, and sequentially obtain the second carrier information, the original carrier information, and the third carrier information, and further, the first carrier information and the second The carrier information, the original carrier information, and the third carrier information are compared and analyzed to determine that the secret information exists in the first carrier information, so that the secret information can be accurately detected.
  • the above-described integrated unit implemented in the form of a software function module can be stored in a computer readable storage medium.
  • the computer readable storage medium can store a computer program, which when executed by the processor, can implement the steps in the foregoing method embodiments.
  • the computer program comprises computer program code, which may be in the form of source code, object code form, executable file or some intermediate form.
  • the computer readable storage medium may include any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a read only memory (ROM, Read-Only Memory). ), random access memory (RAM, Random-Access Memory), electrical carrier signals, telecommunications signals, and software distribution media. It should be noted that the content contained in the computer readable storage medium may be appropriately increased or decreased according to the requirements of legislation and patent practice in a jurisdiction.
  • FIG. 8 is a schematic structural diagram of a receiving device according to an embodiment of the present invention.
  • the receiving device shown in FIG. 8 includes a processor 801 and a memory 802.
  • the processor 801 and the memory 802 are respectively connected to the communication bus.
  • the memory 802 may be a high speed RAM memory or a non-volatile memory. It will be understood by those skilled in the art that the structure of the receiving device shown in FIG. 8 does not constitute a limitation of the present invention, and it may be a bus-shaped structure or a star-shaped structure, and may further include more than that shown in FIG. More or less parts, or some parts, or different parts.
  • the processor 801 is a control center of the receiving device, and may be a central processing unit (Central) Processing Unit (CPU), processor 801 connects various portions of the entire receiving device using various interfaces and lines, by running or executing software programs and/or modules stored in memory 802, and invoking programs stored in memory 802. Code to do the following:
  • Central Central Processing Unit
  • the performing, by the related processing on the first carrier information, sequentially obtaining the second carrier information, the original carrier information, and the third carrier information includes:
  • the original carrier information is remodulated to obtain third carrier information.
  • processor 801 may also call program code stored in the memory 802 for performing the following operations:
  • the preset threshold is set according to a minimum distance of a constellation point and a pre-judgment of the magnitude of the received noise.
  • the receiving device receives the channel-matched first carrier letter.
  • the receiving device receives the channel-matched first carrier letter.
  • Performing correlation processing on the first carrier information sequentially obtaining second carrier information, original carrier information, and third carrier information; comparing the second carrier information with the original carrier information to determine the second carrier Information having the same location and different location as the original carrier information; extracting a first value at the same location of the first carrier information and extracting a first location on the same location of the third carrier information a second value, and determining a first maximum value of an absolute value of a difference between the first value and the second value; extracting a third value at the different position of the first carrier information and extracting the a fourth value at the different position of the third carrier information, and determining a second maximum value of the absolute value of the difference between the third value and the fourth value; determining the second maximum value Whether the difference of the first maximum value is greater than a preset threshold; if yes, determining that there is hidden information in the first carrier information.
  • the receiving device may perform related processing on the received first carrier information, and sequentially obtain the second carrier information, the original carrier information, and the third carrier information, and further, the first carrier information and the second The carrier information, the original carrier information, and the third carrier information are compared and analyzed to determine that the secret information exists in the first carrier information, so that the secret information can be accurately detected.
  • the disclosed apparatus may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in various embodiments of the present invention may be integrated in one processing unit. It is also possible that each unit physically exists alone, or two or more units may be integrated in one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a memory. A number of instructions are included to cause a computer device (which may be a personal computer, server or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing memory includes: a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and the like, which can store program codes.
  • ROM Read-Only Memory
  • RAM Random Access Memory

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Abstract

L'invention concerne un procédé de détection d'information reposant sur une valeur de différence d'énergie de paquet. Le procédé consiste à : recevoir des premières informations de porteuse; traiter les premières informations de porteuse pour obtenir des deuxièmes informations de porteuse, des informations de porteuse d'origine et des troisièmes informations de porteuse; déterminer une position identique et différentes positions des deuxièmes informations de porteuse et des informations de porteuse d'origine; extraire une première valeur numérique à la position identique des premières informations de porteuse et une deuxième valeur numérique à la position identique des troisièmes informations de porteuse et déterminer une première valeur maximale d'une valeur absolue d'une valeur de différence de la première valeur numérique et de la deuxième valeur numérique; extraire une troisième valeur numérique aux différentes positions des premières informations de porteuse et une quatrième valeur numérique aux différentes positions des troisièmes informations de porteuse et déterminer une seconde valeur maximale d'une valeur absolue d'une valeur de différence de la troisième valeur numérique et de la quatrième valeur numérique; déterminer si une valeur de différence de la seconde valeur maximale et de la première valeur maximale est supérieure à un seuil prédéfini; et si tel est le cas, déterminer que des informations cachées existent dans les premières informations de porteuse. Au moyen de la présente invention, des informations cachées peuvent être détectées précisément.
PCT/CN2017/111217 2017-11-15 2017-11-15 Procédé et appareil de détection d'informations basés sur une valeur de différence d'énergie de paquet et dispositif de réception WO2019095176A1 (fr)

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CN104284182A (zh) * 2013-07-05 2015-01-14 汤姆逊许可公司 用于评估水印在视频中的存在的方法和设备
CN105227962A (zh) * 2015-09-29 2016-01-06 西安空间无线电技术研究所 一种基于数据差值的无损信息隐藏方法
US20170061565A1 (en) * 2015-09-02 2017-03-02 Fujitsu Limited Information embedding device, information embedding method, and recording medium storing program
CN107222750A (zh) * 2017-06-21 2017-09-29 北京工业大学 一种面向立体视频的频域视差相干水印方法

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CN104284182A (zh) * 2013-07-05 2015-01-14 汤姆逊许可公司 用于评估水印在视频中的存在的方法和设备
US20170061565A1 (en) * 2015-09-02 2017-03-02 Fujitsu Limited Information embedding device, information embedding method, and recording medium storing program
CN105227962A (zh) * 2015-09-29 2016-01-06 西安空间无线电技术研究所 一种基于数据差值的无损信息隐藏方法
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