CN114513305B - Art painting image processing method and device - Google Patents
Art painting image processing method and device Download PDFInfo
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- CN114513305B CN114513305B CN202210406097.0A CN202210406097A CN114513305B CN 114513305 B CN114513305 B CN 114513305B CN 202210406097 A CN202210406097 A CN 202210406097A CN 114513305 B CN114513305 B CN 114513305B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
- H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F7/58—Random or pseudo-random number generators
- G06F7/588—Random number generators, i.e. based on natural stochastic processes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/20—Drawing from basic elements, e.g. lines or circles
- G06T11/206—Drawing of charts or graphs
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Abstract
The invention discloses a method and a device for processing art painting images, which are characterized in that original image information of art painting is obtained and converted into YUV channel images; obtaining an art drawing image based on image scanning; the original image information comprises an original image and a user ID; extracting a Y-channel vector according to an original YUV channel image, and generating a first image based on the Y-channel vectors of odd columns and even rows of the image; sequentially encrypting the first image to generate an encrypted second image; covering Y-channel vectors of odd columns and even rows in the original YUV-channel image with the encrypted second image to generate an encrypted Y-channel image, and combining the encrypted Y-channel image with the UV-channel image of the original YUV-channel image to generate an encrypted art drawing image; and corresponding encrypted information is opened for the user ID, so that the electronic viewing effect is not influenced by the encrypted artwork image, the formation of the encrypted information is ensured, and the safety is ensured.
Description
Technical Field
The invention belongs to the field of image processing, and particularly relates to a method and a device for processing art painting images.
Background
Painting is an art aspect, which is an action of using a surface as a supporting surface and adding color on the surface, and examples of the surface are paper, canvas, wood, glass, lacquerware or concrete. At the level of artistic expression, drawing meaning also includes the use of the artistic activities together with graphics, patterns and other aesthetic methods to achieve the concept and meaning that the practitioner wishes to express.
In the prior art, excellent paintings are generally scanned to form an electronic edition, specifically, a manuscript to be scanned is laid on a glass plate of a scanner with the front surface facing downwards, and the manuscript can be a text manuscript or a drawing photo; then starting a scanner driving program, and starting scanning the original manuscript by a movable light source arranged in the scanner; the light irradiated to the manuscript passes through a narrow gap after being reflected to form a light band along the x direction, then passes through a group of reflectors, is focused by an optical lens and enters a spectroscope, and the RGB three color light bands obtained by a prism and a RGB three-color filter respectively irradiate onto respective CCD, and the CCD converts the RGB light bands into analog electronic signals which are converted into digital electronic signals by an A/D converter. However, such electronic excellent works have copyright, and need to be encrypted during transmission or storage, especially for famous paintings and other works, the requirements on encryption are extremely high, and the quality of painting display cannot be influenced too much; and by confirming the ID of the current login user, the encrypted image corresponding to the ID of the login user is automatically decrypted, so that the copyright user is automatically decrypted and opened.
Disclosure of Invention
The invention mainly aims to provide a method and a device for processing art painting images, and aims to solve the technical problems that existing art painting works are not beneficial to encrypted storage or transmission, the encryption is easy to break, and the image quality is influenced after the encryption.
In order to achieve the above object, there is provided an art painting image processing method, including:
s1, acquiring original image information of art painting, and converting the original image information into a YUV channel image; the art drawing image is obtained based on image scanning; the original image information comprises an original image and a user ID;
s2, extracting Y-channel vectors according to the original YUV-channel image, and generating a first image based on the Y-channel vectors of odd columns and even rows of the image;
s3, setting an encryption key X, generating a random number n, and sequentially encrypting each pixel X of the first image to obtain c, thereby generating an encrypted second image;
wherein, the encryption formula is:
wherein, the first and the second end of the pipe are connected with each other,
the value is 255;
and S4, covering odd-numbered columns and even-numbered rows of pixels of the Y channel in the original YUV channel image with the encrypted second image to generate an encrypted Y channel image, and combining the encrypted Y channel image and the UV channel image of the original YUV channel image to generate an encrypted art drawing image.
Preferably, the method further comprises: and S5, locally storing the encrypted art drawing image and/or sending the encrypted art drawing image to a server.
Preferably, the method further comprises: the setting of the encryption key X to generate the random number n includes:
generating a binary sequence with a value of 0 or 1 based on the encryption key X; randomly selecting a number from the binary sequence as a random number n.
Preferably, the executing the encrypted art drawing image to be locally stored and/or sent to the server includes: correspondingly storing the encrypted image, the encrypted pixel description information, the belonged user ID and the encryption key X; the encrypted pixel description information comprises Y-channel vectors of odd columns and even rows of the image;
executing automatic decryption operation on the ID of the current login user by confirming the ID of the current login user, wherein the automatic decryption operation corresponds to the encrypted image corresponding to the ID of the login user;
the decryption operation is the reverse process of the encryption operation, and specifically includes:
furthermore, this embodiment also provides an art painting image processing apparatus, including:
the acquisition module is used for acquiring original image information of art painting and converting the original image information into a YUV channel image; the art drawing image is obtained based on image scanning; the original image information comprises an original image and a user ID;
the first generation module extracts a Y-channel vector according to the original YUV channel image and generates a first image based on the Y-channel vectors of odd columns and even rows of the image;
the encryption module is used for setting an encryption key X, generating a random number n, and sequentially encrypting each pixel X of the first image to obtain c so as to generate an encrypted second image;
wherein, the encryption formula is:
wherein, the first and the second end of the pipe are connected with each other,
the value is 255;
and the second generation module is used for covering odd-numbered columns and even-numbered rows of pixels of the Y channel in the original YUV channel image with the encrypted second image to generate an encrypted Y channel image, and merging the encrypted Y channel image and the UV channel image of the original YUV channel image to generate an encrypted art drawing image.
Preferably, the apparatus further comprises: and the storage module is used for executing local storage on the encrypted art drawing image and/or sending the encrypted art drawing image to a server.
Preferably, the apparatus further comprises: the setting of the encryption key X to generate the random number n includes:
generating a binary sequence with a value of 0 or 1 based on the encryption key X; randomly selecting a number from the binary sequence as a random number n.
Preferably, the executing the encrypted art drawing image to be locally stored and/or sent to the server includes: correspondingly storing the encrypted image, the encrypted pixel description information, the belonged user ID and the encryption key X; the encrypted pixel description information comprises Y-channel vectors of odd columns and even rows of the image;
executing automatic decryption operation on the ID of the current login user by confirming the ID of the current login user, wherein the automatic decryption operation corresponds to the encrypted image corresponding to the ID of the login user;
wherein the decryption operation specifically comprises:
furthermore, an electronic device is proposed, which comprises a processor and a memory, wherein the memory stores a computer program, and the computer program is executed by the processor to realize the art painting image processing method.
Furthermore, a computer storage medium storing a program is also proposed; the program is loaded and executed by a processor to implement the art drawing image processing method as described above.
According to the art painting image processing method and device, original image information of art painting is obtained and converted into YUV channel images; the art drawing image is obtained based on image scanning; the original image information comprises an original image and a user ID; extracting a Y-channel vector according to an original YUV channel image, and generating a first image based on the Y-channel vectors of odd columns and even rows of the image; setting an encryption key X, generating a random number n, and sequentially encrypting each pixel of the first image based on an encryption formula to obtain c, thereby generating an encrypted second image; and combining the encrypted second image with the Y-channel vectors of the even-numbered columns and the odd-numbered rows of the original image to generate an encrypted Y-channel image, and combining the encrypted Y-channel image with the UV-channel image of the original image to generate an encrypted art drawing image. According to the invention, the local rows and columns of the Y-channel image are selectively subjected to more random encryption algorithm processing, and the corresponding encryption information is opened for the user ID, so that the encrypted artwork image does not influence the electronic viewing effect, the formation of the encryption information is ensured, and the safety is ensured. In addition, the invention improves the encryption algorithm and only encrypts part of lines of the Y-channel image, thereby greatly protecting the overall picture feeling of the image and finishing high-efficiency encryption.
Drawings
FIG. 1 is a flowchart of a method for processing an image of art painting according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an art painting image processing apparatus according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, it being understood that the preferred embodiments described herein are for purposes of illustration and explanation only and are not intended to be limiting of the present invention, and that the embodiments and features of the embodiments may be combined with each other without conflict.
Example one
Referring to fig. 1, fig. 1 is a flowchart of an art painting image processing method according to an embodiment, where the method includes:
s1, acquiring original image information of art painting, and converting the original image information into a YUV channel image; the art drawing image is obtained based on image scanning; the original image information comprises an original image and a user ID;
s2, extracting a Y-channel vector according to the original YUV-channel image, and generating a first image based on the Y-channel vectors of odd columns and even rows of the image;
s3, setting an encryption key X, generating a random number n, and sequentially encrypting each pixel X of the first image to obtain c, thereby generating an encrypted second image;
wherein, the encryption formula is:
wherein the content of the first and second substances,
the value is 255;
and S4, covering odd-numbered columns and even-numbered rows of pixels of the Y channel in the original YUV channel image with the encrypted second image to generate an encrypted Y channel image, and merging the encrypted Y channel image and the UV channel image of the original YUV channel image to generate an encrypted art drawing image.
Preferably, the method further comprises: and S5, locally storing the encrypted art drawing image and/or sending the encrypted art drawing image to a server.
Preferably, the method further comprises: the setting of the encryption key X to generate the random number n includes:
generating a binary sequence with a value of 0 or 1 based on the encryption key X; randomly selecting a number from the binary sequence as a random number n.
Preferably, the executing the encrypted art drawing image to be locally stored and/or sent to the server includes: correspondingly storing the encrypted image, the encrypted pixel description information, the belonged user ID and the encryption key X; the encrypted pixel description information comprises Y-channel vectors of odd columns and even rows of the image;
by confirming the ID of the current login user, executing automatic decryption operation on the current login user to obtain an encrypted image corresponding to the ID of the login user;
wherein the decryption operation specifically comprises:
furthermore, an art painting image processing apparatus is provided, the method comprising:
the acquisition module 10 is used for acquiring original image information of art painting and converting the original image information into a YUV channel image; the art drawing image is obtained based on image scanning; the original image information comprises an original image and a user ID;
the first generation module 20 extracts Y-channel vectors according to the original YUV-channel image and generates a first image based on the Y-channel vectors of odd columns and even rows of the image;
the encryption module 30 is used for setting an encryption key X, generating a random number n, and sequentially encrypting each pixel X of the first image to obtain c based on the following formula so as to generate an encrypted second image;
wherein, the first and the second end of the pipe are connected with each other,
the value is 255;
specifically, the present embodiment can generate a random number based on a rand () function.
And the second generating module 40 covers odd-numbered columns and even-numbered rows of pixels of the Y channel in the original YUV-channel image with the encrypted second image to generate an encrypted Y-channel image, and combines the encrypted Y-channel image with the UV-channel image of the original YUV-channel image to generate an encrypted art drawing image.
Preferably, the apparatus further comprises: and the storage module is used for executing local storage on the encrypted art drawing image and/or sending the encrypted art drawing image to a server.
Preferably, the apparatus further comprises: the setting of the encryption key X to generate the random number n includes:
generating a binary sequence with a value of 0 or 1 based on the encryption key X; randomly selecting a number from the binary sequence as a random number n.
Preferably, the performing local storage and/or sending of the encrypted art drawing image to the server includes: correspondingly storing the encrypted image, the encrypted pixel description information, the belonged user ID and the encryption key X; the encrypted pixel description information comprises Y-channel vectors of odd columns and even rows of the image;
by confirming the ID of the current login user, executing automatic decryption operation on the current login user to obtain an encrypted image corresponding to the ID of the login user;
wherein the decryption operation specifically comprises:
furthermore, an electronic device is proposed, which comprises a processor and a memory, wherein the memory stores a computer program, and the computer program is executed by the processor to realize the art painting image processing method.
Furthermore, a computer storage medium storing a program is also proposed; the program is loaded and executed by a processor to implement the art drawing image processing method as described above.
In the scheme of the embodiment of the invention, the provided art painting image processing method and device acquire original image information of art painting and convert the original image information into a YUV channel image; the art drawing image is obtained based on image scanning; the original image information comprises an original image and a user ID; extracting a Y-channel vector according to an original YUV channel image, and generating a first image based on the Y-channel vectors of odd columns and even rows of the image; setting an encryption key X, generating a random number n, and sequentially encrypting each pixel of the first image based on an encryption formula to obtain c, thereby generating an encrypted second image; and combining the encrypted second image with the Y-channel vectors of the even-numbered columns and the odd-numbered rows of the original image to generate an encrypted Y-channel image, and combining the encrypted Y-channel image with the UV-channel image of the original image to generate an encrypted art drawing image. According to the invention, the local rows and columns of the Y-channel image are selectively subjected to more random encryption algorithm processing, and the corresponding encryption information is opened for the user ID, so that the encrypted artwork image does not influence the electronic viewing effect, the formation of the encryption information is ensured, and the safety is ensured.
It should be noted that the division of the modules of the above apparatus is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules may all be implemented in software invoked by a processing element. Or may be implemented entirely in hardware. And part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware.
Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing detailed disclosure is to be regarded as illustrative only and not as limiting the present specification. Various modifications, improvements, and offset processing may occur to those skilled in the art, though not expressly stated herein. Such modifications, improvements, and offset processing are suggested in this specification, and still fall within the spirit and scope of the exemplary embodiments of this specification.
Moreover, those skilled in the art will appreciate that aspects of the present description may be illustrated and described in terms of several patentable species or situations, including any new and useful combination of processes, machines, manufacture, or materials, or any new and useful modification thereof. Accordingly, aspects of this description may be performed entirely by hardware, entirely by software (including firmware, resident software, micro-code, etc.), or by a combination of hardware and software. The above hardware or software may be referred to as "data block," module, "" engine, "" unit, "" component, "or" system. Furthermore, aspects of the present description may be represented as a computer product, including computer readable program code, embodied in one or more computer readable media.
It is to be understood that the descriptions, definitions and/or uses of terms in the accompanying materials of the present specification shall control if they are inconsistent or inconsistent with the statements and/or uses of the present specification.
Finally, it should be understood that the embodiments described herein are merely illustrative of the principles of the embodiments described herein. Other variations are also possible within the scope of this description. Thus, by way of example, and not limitation, alternative configurations of the embodiments of the present specification can be seen as consistent with the teachings of the present specification. Accordingly, the embodiments of the present description are not limited to only those explicitly described and depicted herein.
Claims (6)
1. An image processing method for art painting, the method comprising:
s1, acquiring original image information of art painting, and converting the original image information into a YUV channel image; the art drawing image is obtained based on image scanning; the original image information comprises an original image and a user ID;
s2, extracting a Y-channel vector according to the original YUV-channel image, and generating a first image based on the Y-channel vectors of odd columns and even rows of the image;
s3, setting an encryption key X, generating a random number n, and sequentially encrypting each pixel X of the first image to obtain c, thereby generating an encrypted second image;
wherein, the encryption formula is:
wherein, the first and the second end of the pipe are connected with each other,
the value is 255;
s4, covering odd-numbered columns and even-numbered rows of pixels of a Y channel in the original YUV channel image with the encrypted second image to generate an encrypted Y channel image, and combining the encrypted Y channel image with the UV channel image of the original YUV channel image to generate an encrypted art drawing image;
s5, locally storing the encrypted art drawing image and/or sending the encrypted art drawing image to a server;
the setting of the encryption key X to generate the random number n includes:
generating a binary sequence with a value of 0 or 1 based on the encryption key X; randomly selecting a number from the binary sequence as a random number n.
2. The art drawing image processing method according to claim 1, wherein the performing local storage and/or sending of the encrypted art drawing image to a server includes: correspondingly storing the encrypted image, the encrypted pixel description information, the belonged user ID and the encryption key X; the encrypted pixel description information comprises Y-channel vectors of odd columns and even rows of the image;
executing automatic decryption operation on the ID of the current login user by confirming the ID of the current login user, wherein the automatic decryption operation corresponds to the encrypted image corresponding to the ID of the login user;
wherein the decryption operation specifically comprises:
3. an apparatus for processing an image for art painting, the apparatus comprising:
the acquisition module acquires original image information of art painting and converts the original image information into a YUV channel image; the art drawing image is obtained based on image scanning; the original image information comprises an original image and a user ID;
the first generation module extracts a Y-channel vector according to the original YUV channel image and generates a first image based on the Y-channel vectors of odd columns and even rows of the image;
the encryption module is used for setting an encryption key X, generating a random number n, and sequentially encrypting each pixel X of the first image based on the following formula to obtain c, so that an encrypted second image is generated;
wherein the content of the first and second substances,
the value is 255;
the second generation module is used for covering odd-numbered columns and even-numbered rows of pixels of a Y channel in the original YUV channel image with the encrypted second image to generate an encrypted Y channel image, and combining the encrypted Y channel image with the UV channel image of the original YUV channel image to generate an encrypted art drawing image; the storage module is used for executing local storage on the encrypted art drawing image and/or sending the encrypted art drawing image to a server;
the setting of the encryption key X to generate the random number n includes:
generating a binary sequence with a value of 0 or 1 based on the encryption key X; randomly selecting a number from the binary sequence as a random number n.
4. The art drawing image processing apparatus according to claim 3, wherein the performing of the local storage and/or the transmission of the encrypted art drawing image to the server includes: correspondingly storing the encrypted image, the encrypted pixel description information, the belonged user ID and the encryption key X; the encrypted pixel description information comprises Y-channel vectors of odd columns and even rows of the image;
by confirming the ID of the current login user, executing automatic decryption operation on the current login user to obtain an encrypted image corresponding to the ID of the login user;
wherein the decryption operation specifically comprises:
5. an electronic device comprising a processor and a memory, the memory storing a computer program for execution by the processor to implement the art drawing image processing method of any one of claims 1-2.
6. A computer storage medium storing a program; the program is loaded and executed by a processor to implement the art drawing image processing method according to any one of claims 1 to 2.
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| CN110430435B (en) * | 2019-08-09 | 2022-04-19 | 广东工业大学 | Image encryption method and device, sensor and readable storage medium |
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| CN108513135A (en) * | 2017-02-27 | 2018-09-07 | 诺基亚技术有限公司 | Image encryption and decryption |
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