CN114513305A - Art painting image processing method and device - Google Patents
Art painting image processing method and device Download PDFInfo
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- CN114513305A CN114513305A CN202210406097.0A CN202210406097A CN114513305A CN 114513305 A CN114513305 A CN 114513305A CN 202210406097 A CN202210406097 A CN 202210406097A CN 114513305 A CN114513305 A CN 114513305A
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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; and generating a second image by encryption, combining the second image with the Y-channel vectors of the even columns and the odd 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 image. The local lines and rows of the Y-channel image are selected to perform more random encryption algorithm processing, and corresponding encryption information is opened for the user ID, so that the encrypted artwork image does not affect the electronic viewing effect, and the formation of the encryption information 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-oriented act of using a surface, such as paper, canvas, wood, glass, lacquer or concrete, as a support surface and applying color to the surface. 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 pictorial representations are generally scanned to form an electronic plate, and specifically, the electronic plate is generally formed by laying a manuscript to be scanned on a glass plate of a scanner with the front surface facing downwards, wherein the manuscript can be a text manuscript or a drawing picture; then starting a scanner driving program, and starting scanning the original manuscript by a movable light source arranged in the scanner; the light irradiated on the manuscript is reflected and passed through a narrow gap to form a light band along the x direction, then passed through a group of reflectors, focused by optical lens and fed into spectroscope, and passed through prism and red-green-blue three-colour filter to obtain RGB three colour light bands, and respectively irradiated on their CCD, and the CCD can convert the RGB light bands into analog electronic signals, and these signals can be converted into digital electronic signals by 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 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, 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 painting 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 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;
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 content of the first and second substances,
the value is 255;
and the second generation module is used for 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 painting 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 is proposed, which stores a program; 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, so as to generate 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 partial lines of the Y-channel image, thereby greatly protecting the overall picture feeling of the image and finishing the 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 below with reference to the accompanying drawings of the specification, it being understood that the preferred embodiments described herein are merely for illustrating and explaining the present invention, and are not intended to limit the present invention, and that the embodiments and features of the embodiments in the present invention may be combined with each other without conflict.
Example one
Referring to fig. 1, fig. 1 is a flowchart of an art drawing image processing method according to an embodiment of the present invention, 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, 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 painting 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 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 art painting image processing apparatus is also provided, the method including:
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 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 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 content of the first and second substances,
the value is 255;
specifically, in the present embodiment, the random number may be generated based on a rand () function.
And the second generating module 40 combines the encrypted second image with the Y channel vectors of the even columns and the odd rows of the original image to generate an encrypted Y channel image, and combines the encrypted Y channel image with the UV channel image of the original 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;
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 is proposed, which stores a program; 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, so as to generate 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 contexts, including any new and useful combination of processes, machines, manufacture, or materials, or any new and useful improvement 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 this specification shall control if they are inconsistent or contrary to the descriptions and/or uses of terms in this specification.
Finally, it should be understood that the embodiments described herein are merely illustrative of the principles of the embodiments of the present disclosure. Other variations are also possible within the scope of the present 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 embodiments explicitly described and depicted herein.
Claims (10)
1. An art painting image processing 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 content of the first and second substances,
the value is 255;
and S4, 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 painting image.
2. The art graphic image processing method of claim 1, further comprising: and S5, locally storing the encrypted art drawing image and/or sending the encrypted art drawing image to a server.
3. The art graphic image processing method of claim 2, further comprising: 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 method according to claim 3, wherein the performing of local storage and/or transmission 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;
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 art painting image processing apparatus, characterized in that the apparatus comprises:
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 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;
and the second generation module is used for 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 painting image.
6. The art painting image processing apparatus according to claim 5, further comprising: 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.
7. The art painting image processing apparatus according to claim 6, further comprising: 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.
8. The art drawing image processing apparatus according to claim 7, wherein the performing of local storage and/or transmission 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;
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:
9. an electronic device comprising a processor and a memory, the memory storing a computer program for execution by the processor to implement the art painting image processing method according to any one of claims 1 to 4.
10. 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 4.
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