CN114513305B - A kind of art painting image processing method and device - Google Patents

Abstract

The invention discloses a method and a device for processing an image of an art painting. By acquiring the original image information of the art painting and converting it into a YUV channel image; the art painting image is obtained based on image scanning; the original image information includes the original image and the user ID; Extract the Y channel vector from the channel image, and generate a first image based on the Y channel vector of the odd-numbered columns and even-numbered rows of the image; encrypt the first image in turn to generate an encrypted second image; cover the encrypted second image with the original YUV The Y channel vector of odd-numbered columns and even-numbered rows in the channel image is used to generate an encrypted Y-channel image, and based on the encrypted Y-channel image and the UV-channel image of the original YUV-channel image, an encrypted art painting image is generated; and for the user The ID opens the corresponding encrypted information, so that the encrypted artwork image does not affect the electronic viewing effect, and the formation of encrypted information is ensured and security is ensured.

Description

A kind of art painting image processing method and device

technical field

The invention belongs to the field of image processing, and in particular relates to a method and a device for processing art painting images.

Background technique

At the artistic level, painting is the act of using a surface as a support and adding color to it. Examples of those surfaces are paper, canvas, wood, glass, lacquer or concrete. At the level of artistic terminology, the meaning of painting also includes the use of this artistic behavior plus graphics, composition 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 version. Specifically, it is generally by laying the manuscript to be scanned face down on the glass plate of the scanner. The manuscript can be a text manuscript or a drawing photo; then After starting the scanner driver, the movable light source installed inside the scanner starts to scan the original; in order to evenly illuminate the manuscript, the scanner light source is a long strip and sweeps the entire original in the y direction; the light irradiated on the original is After reflection, it passes through a very narrow gap to form a light band along the x-direction, and then passes through a group of reflectors, is focused by an optical lens and enters the beam splitter, and passes through a prism and red, green, and blue three color filters. The CCD converts the RGB light band into an analog electronic signal, and the signal is converted into a digital electronic signal by the A/D converter. However, such excellent works in electronic version have copyright and need to be encrypted during transmission or storage, especially for famous paintings and other works, which have extremely high requirements for encryption, and cannot greatly affect the quality of the painting display; and by confirming the ID of the currently logged-in user , performing an automatic decryption operation on it corresponds to the encrypted image corresponding to the ID of the logged-in user, thereby realizing automatic decryption and opening for copyright users.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to propose an art painting image processing method and device, which aims to solve the above-mentioned technical problems that art painting works are not conducive to encrypted storage or transmission, and that the encryption is too easy to crack, and the image quality is affected after encryption.

In order to achieve the above purpose, a method for processing art painting images is proposed, the method comprising:

S1, obtain the original image information of art painting, and convert it into a YUV channel image; the art painting image is obtained based on image scanning; the original image information includes the original image and the user ID;

S2, extract the Y channel vector according to the original YUV channel image, and generate the first image based on the Y channel vector of the odd-numbered columns and even-numbered rows of the image;

S3, set an encryption key X, generate a random number n, and perform encryption on each pixel x of the first image in turn to obtain c, thereby generating an encrypted second image;

Among them, the encryption formula is:

取值为255；in,

The value is 255;

S4, covering the 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 based on the encrypted Y channel image and the UV channel of the original YUV channel image Image merging to generate encrypted art painting images.

Preferably, the method further includes: S5, locally storing and/or sending the encrypted art painting image to the server.

Preferably, the method further includes: the setting of the encryption key X and the generation of the random number n include:

Based on the encryption key X, a binary sequence with a value of 0 or 1 is generated; a number is randomly selected from the binary sequence as a random number n.

Preferably, performing local storage and/or sending the encrypted art painting image to the server includes: correspondingly storing the encrypted image, the encrypted pixel description information, the user ID and the encryption key X; The encrypted pixel description information includes the Y channel vector of the odd-numbered columns and even-numbered rows of the image;

By confirming the ID of the currently logged-in user, performing an automatic decryption operation on it corresponds to the encrypted image corresponding to the ID of the logged-in user;

Wherein, the decryption operation is the inverse process of the encryption operation, specifically:

。

.

In addition, this embodiment also proposes a device for processing an image of an art painting, the device comprising:

The acquisition module obtains the original image information of the art painting and converts it into a YUV channel image; the art painting image is obtained based on image scanning; the original image information includes the original image and the user ID;

The first generation module extracts the Y channel vector according to the original YUV channel image, and generates the first image based on the Y channel vector of the odd column and even row of the image;

an encryption module, setting an encryption key X, generating a random number n, and performing encryption on each pixel x of the first image in turn to obtain c, thereby generating an encrypted second image;

Among them, the encryption formula is:

取值为255；in,

The value is 255;

The second generation module 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 generates an encrypted Y channel image based on the encrypted Y channel image and the original YUV channel image. The UV channel images are merged to generate an encrypted art painting image.

Preferably, the device further includes: a storage module, which locally stores and/or sends the encrypted art painting image to the server.

Preferably, the device further includes: the setting of the encryption key X and the generation of the random number n include:

Based on the encryption key X, a binary sequence with a value of 0 or 1 is generated; a number is randomly selected from the binary sequence as a random number n.

Preferably, performing local storage and/or sending the encrypted art painting image to the server includes: correspondingly storing the encrypted image, the encrypted pixel description information, the user ID and the encryption key X; The encrypted pixel description information includes the Y channel vector of the odd-numbered columns and even-numbered rows of the image;

By confirming the ID of the currently logged-in user, performing an automatic decryption operation on it corresponds to the encrypted image corresponding to the ID of the logged-in user;

Wherein, the decryption operation is specifically:

。

.

In addition, an electronic device is also proposed, which includes a processor and a memory, where the memory stores a computer program, and the computer program is executed by the processor to realize the above-mentioned method for processing art painting images.

In addition, a computer storage medium is also proposed, wherein the computer storage medium stores a program; the program is loaded and executed by a processor to realize the above-mentioned method for processing art painting images.

The art painting image processing method and device provided by the present invention obtain the original image information of the art painting and convert it into a YUV channel image; the art painting image is obtained based on image scanning; the original image information includes the original image and the user ID; extract the Y channel vector according to the original YUV channel image, and generate the first image based on the Y channel vector of the odd column and even row of the image; set the encryption key X, generate the random number n, and sequentially perform the first image based on the encryption formula Each pixel of the image is encrypted to obtain c, thereby generating an encrypted second image; the encrypted second image is combined with the Y channel vectors of the even columns and odd rows of the original image to generate an encrypted Y channel image. , and combine the encrypted Y channel image with the UV channel image of the original image to generate an encrypted art painting image. The present invention selectively processes the local rows and columns of the Y channel image with a more random encryption algorithm, and opens the corresponding encryption information for the user ID, thereby ensuring that the encrypted artwork image does not affect the electronic viewing effect and ensuring the encryption information. formation to ensure safety. In addition, the present invention improves the encryption algorithm and only performs encryption on part of the lines of the Y channel image, which greatly protects the overall picture sense of the image and completes efficient encryption.

Description of drawings

1 is a flowchart of a method for processing an art painting image according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an image processing apparatus for art painting according to an embodiment of the present invention.

Detailed ways

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention, and in the case of no conflict, the present invention The embodiments in and features in the embodiments can be combined with each other.

Example 1

Referring to FIG. 1, FIG. 1 is a flowchart of a method for processing an art painting image in this embodiment. In this embodiment, the method includes:

S1, obtain the original image information of art painting, and convert it into a YUV channel image; the art painting image is obtained based on image scanning; the original image information includes the original image and the user ID;

S2, extract the Y channel vector according to the original YUV channel image, and generate the first image based on the Y channel vector of the odd-numbered columns and even-numbered rows of the image;

S3, set an encryption key X, generate a random number n, and perform encryption on each pixel x of the first image in turn to obtain c, thereby generating an encrypted second image;

Among them, the encryption formula is:

取值为255；in,

The value is 255;

S4, covering the 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 based on the encrypted Y channel image and the UV channel of the original YUV channel image Image merging to generate encrypted art painting images.

Preferably, the method further includes: S5, locally storing and/or sending the encrypted art painting image to the server.

Preferably, the method further includes: the setting of the encryption key X and the generation of the random number n include:

Based on the encryption key X, a binary sequence with a value of 0 or 1 is generated; a number is randomly selected from the binary sequence as a random number n.

Preferably, performing local storage and/or sending the encrypted art painting image to the server includes: correspondingly storing the encrypted image, the encrypted pixel description information, the user ID and the encryption key X; The encrypted pixel description information includes the Y channel vector of the odd-numbered columns and even-numbered rows of the image;

By confirming the ID of the currently logged-in user, performing an automatic decryption operation on it corresponds to the encrypted image corresponding to the ID of the logged-in user;

Wherein, the decryption operation is specifically:

。

.

In addition, an art painting image processing device is also proposed, and the method includes:

The acquisition module 10 acquires the original image information of the art painting, and converts it into a YUV channel image; the art painting image is obtained based on image scanning; the original image information includes the original image and the user ID;

The first generation module 20 extracts the Y channel vector according to the original YUV channel image, and generates the first image based on the Y channel vector of the odd column and even row of the image;

The encryption module 30 sets an encryption key X, generates a random number n, and sequentially encrypts each pixel x of the first image based on the following formula to obtain c, thereby generating an encrypted second image;

取值为255；in,

The value is 255;

Specifically, in this embodiment, a random number may be generated based on the rand() function.

The second generation 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 generates an encrypted Y channel image based on the encrypted Y channel image and the original YUV channel. The image's UV channel image is merged to generate an encrypted art painting image.

Preferably, the device further includes: a storage module, which locally stores and/or sends the encrypted art painting image to the server.

Preferably, the device further includes: the setting of the encryption key X and the generation of the random number n include:

Based on the encryption key X, a binary sequence with a value of 0 or 1 is generated; a number is randomly selected from the binary sequence as a random number n.

Preferably, performing local storage and/or sending the encrypted art painting image to the server includes: correspondingly storing the encrypted image, the encrypted pixel description information, the user ID and the encryption key X; The encrypted pixel description information includes the Y channel vector of the odd-numbered columns and even-numbered rows of the image;

By confirming the ID of the currently logged-in user, performing an automatic decryption operation on it corresponds to the encrypted image corresponding to the ID of the logged-in user;

Wherein, the decryption operation is specifically:

。

.

In addition, an electronic device is also proposed, which includes a processor and a memory, where the memory stores a computer program, and the computer program is executed by the processor to realize the above-mentioned method for processing art painting images.

In addition, a computer storage medium is also proposed, wherein the computer storage medium stores a program; the program is loaded and executed by a processor to realize the above-mentioned method for processing art painting images.

In the solution of the above embodiment of the present invention, the provided art painting image processing method and device obtain the original image information of art painting and convert it into a YUV channel image; the art painting image is obtained based on image scanning; the original The image information includes the original image and the user ID to which it belongs; the Y channel vector is extracted from the original YUV channel image, and the first image is generated based on the Y channel vector of the odd column and even row of the image; the encryption key X is set, the random number n is generated, and a random number n is generated based on the image. The encryption formula performs encryption on each pixel of the first image in turn to obtain c, thereby generating an encrypted second image; the encrypted second image and the Y channel vectors of the even columns and odd rows of the original image are first Perform merging to generate an encrypted Y channel image, and combine the encrypted Y channel image with the UV channel image of the original image to generate an encrypted art painting image. The present invention selectively processes the local rows and columns of the Y channel image with a more random encryption algorithm, and opens the corresponding encryption information for the user ID, thereby ensuring that the encrypted artwork image does not affect the electronic viewing effect and ensuring the encryption information. formation to ensure safety.

It should be noted that it should be understood that the division of each module of the above apparatus is only a division of logical functions, and may be fully or partially integrated into a physical entity in actual implementation, or may be physically separated. And these modules can all be implemented in the form of software calling through processing elements. All can also be implemented in the form of hardware. Some modules can also be implemented in the form of calling software through processing elements, and some modules can be implemented in the form of hardware.

The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is merely an example, and does not constitute a limitation of the present specification. Although not explicitly described herein, various modifications, improvements and offsets of this specification may occur to those skilled in the art. Such modifications, improvements, and offset processing are suggested in this specification, so such modifications, improvements, and offset processing still fall within the spirit and scope of the exemplary embodiments of this specification.

Furthermore, those skilled in the art will appreciate that aspects of this specification may be illustrated and described in several patentable classes or situations, including any new and useful process, machine, product, or combination of matter, or combinations of them of any new and useful improvements. Accordingly, various aspects of this specification may be performed entirely by hardware, entirely by software (including firmware, resident software, microcode, etc.), or by a combination of hardware and software. The above hardware or software may be referred to as a "data block", "module", "engine", "unit", "component" or "system". Furthermore, aspects of this specification may be embodied as a computer product comprising computer readable program code embodied in one or more computer readable media.

It should be noted that, if there is any inconsistency or conflict between the descriptions, definitions and/or use of terms in the accompanying materials of this specification and the contents of this specification, the descriptions, definitions and/or use of terms in this specification shall prevail .

Finally, it should be understood that the embodiments described in this specification are only used to illustrate the principles of the embodiments of this specification. Other variations are also possible within the scope of this specification. Accordingly, by way of example and not limitation, alternative configurations of the embodiments of this specification may be considered consistent with the teachings of this specification. Accordingly, the embodiments of this specification are not limited to those expressly introduced and described in this specification.

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 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 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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