CN110503701B - Coloring method and device for cartoon hand drawing - Google Patents
Coloring method and device for cartoon hand drawing Download PDFInfo
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- CN110503701B CN110503701B CN201910809132.1A CN201910809132A CN110503701B CN 110503701 B CN110503701 B CN 110503701B CN 201910809132 A CN201910809132 A CN 201910809132A CN 110503701 B CN110503701 B CN 110503701B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
- G06F3/04845—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range for image manipulation, e.g. dragging, rotation, expansion or change of colour
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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
- G06T11/001—Texturing; Colouring; Generation of texture or colour
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Abstract
The application discloses a coloring method and device for cartoon hand drawing, wherein the method comprises the following steps: acquiring black-white hand drawings to be colored and the coloring types of the black-white hand drawings; when the coloring type is judged to be random coloring, coloring the black-white hand drawing according to a preset random coloring model; when the coloring type is judged to be interactive coloring, the coloring operation of the black-white hand drawing input by a user is obtained, and the black-white hand drawing is colored according to the coloring operation, so that the technical problem that the conventional cartoon coloring mode mainly depends on professional ability of personnel and is only suitable for professional staff is solved.
Description
Technical Field
The application relates to the technical field of image processing, in particular to a coloring method and device for cartoon hand drawing.
Background
The cartoon is used as a first expression form of the cartoon in the market, has the characteristics of high updating speed and spreading the latest scenario, and the requirements of people for cartoon products are changed along with the development of cartoon technology, so that the cartoon is not only suitable for black-and-white hand drawing, but also hopefully, a colored image after the black-and-white hand drawing is colored.
At present, the method for coloring black-and-white cartoon hand drawing comprises the following steps: personnel color the hand drawings through professional image processing software, and the coloring mode mainly depends on professional ability of the personnel and is only suitable for professional personnel.
Disclosure of Invention
In view of the above, the application provides a method and a device for coloring a cartoon hand drawing, which solve the technical problem that the coloring mode of the existing cartoon is mainly dependent on professional ability of personnel and is only suitable for professional personnel.
The first aspect of the application provides a method for coloring a cartoon hand drawing, which comprises the following steps:
acquiring black-white hand drawings to be colored and the coloring types of the black-white hand drawings;
when the coloring type is judged to be random coloring, coloring the black-white hand drawing according to a preset random coloring model;
and when the coloring type is judged to be interactive coloring, obtaining the coloring operation of the black-white hand drawing input by a user, and coloring the black-white hand drawing according to the coloring operation.
Optionally, the method further comprises:
acquiring a color image to be re-colored;
and extracting the outline of the color image to obtain the black-white hand drawing.
Optionally, before the extracting the outline of the color image to obtain the black-white hand drawing, the method further includes:
preprocessing the color image, and executing subsequent steps on the preprocessed color image.
Optionally, the coloring operation includes coloring color;
the step of coloring the black-white hand drawing according to the coloring operation specifically comprises:
and coloring the coloring area corresponding to the coloring color according to the coloring color, wherein a preset corresponding relation is established between the coloring area and the coloring color.
A second aspect of the present application provides a device for coloring a caricature hand drawing, comprising: the device comprises a first image acquisition module, a coloring type acquisition module, a main control module, a random coloring module and an interactive coloring module;
the first image acquisition module is used for acquiring black-and-white hand drawings to be colored;
the coloring type acquisition module is used for acquiring the coloring type of the black-white hand drawing;
the main control module is used for triggering the random coloring module when judging that the coloring type is random coloring and triggering the interactive coloring module when judging that the coloring type is interactive coloring;
the random coloring module is used for coloring the black-white hand drawing according to a preset random coloring model;
the interactive coloring module is used for acquiring the coloring operation of the black-white hand drawing input by a user and coloring the black-white hand drawing according to the coloring operation.
Optionally, the method further comprises: the second image acquisition module and the contour extraction module;
the second image acquisition module is used for acquiring a color image;
the contour extraction module is used for extracting the contour of the color image to obtain the black-and-white hand drawing, and sending the black-and-white hand drawing to the first image acquisition module.
Optionally, the method further comprises: a preprocessing module;
the preprocessing module is used for preprocessing the color image and sending the preprocessed color image to the contour extraction module.
Optionally, the contour extraction module is specifically configured to extract the contour of the color image according to an adaptive threshold method, so as to obtain the black-white hand drawing.
Optionally, the preset random coloring model includes: generating an antagonism network coloring model, wherein the generated antagonism network coloring model is obtained by training a generated antagonism network.
Optionally, the coloring operation includes coloring color;
the step of coloring the black-white hand drawing according to the coloring operation specifically comprises:
and coloring the coloring area corresponding to the coloring color according to the coloring color, wherein a preset corresponding relation is established between the coloring area and the coloring color.
From the above technical scheme, the application has the following advantages:
the application provides a painting method for cartoon hand drawing, which comprises the following steps: when the black-and-white hand drawing to be colored is obtained, the coloring type of the black-and-white hand drawing is obtained, then when the coloring type of the black-and-white hand drawing is judged to be random coloring, the black-and-white hand drawing is colored according to a preset random coloring model, when the coloring type of the black-and-white hand drawing is judged to be interactive coloring, the coloring operation of the black-and-white hand drawing input by a user is obtained, and the black-and-white hand drawing is colored according to the coloring operation.
Drawings
Fig. 1 is a flowchart of a first embodiment of a method for coloring a cartoon hand drawing according to an embodiment of the present application;
fig. 2 is a schematic flow chart of a second embodiment of a coloring method for a cartoon hand drawing in the embodiment of the application;
fig. 3 is a schematic structural diagram of an embodiment of a coloring device for cartoon hand drawing in an embodiment of the present application.
Detailed Description
The embodiment of the application provides a method and a device for coloring cartoon hand drawings, which solve the technical problem that the coloring mode of the traditional cartoon mainly depends on professional ability of personnel and is only suitable for professional personnel.
In order to make the present application solution better understood by those skilled in the art, the following description will clearly and completely describe the technical solution in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
For easy understanding, the following describes a method for coloring a cartoon hand drawing in the present application in detail, please refer to fig. 1, fig. 1 is a flowchart of an embodiment one of a method for coloring a cartoon hand drawing in the embodiment of the present application, which specifically includes:
step 101, obtaining black-white hand drawings to be colored and the coloring types of the black-white hand drawings.
In this embodiment, to color a black-and-white hand drawing to obtain a color image, the black-and-white hand drawing and the color type of the black-and-white hand drawing need to be obtained first, for example, the color type of the black-and-white hand drawing input by a professional may be interactive color, and the color type of the black-and-white hand drawing input by a non-professional may be random color.
And 102, when the coloring type is judged to be random coloring, coloring the black-and-white hand drawing according to a preset random coloring model.
After obtaining the black-white hand drawing and the coloring type of the black-white hand drawing, judging what the coloring type is, and when judging that the coloring type is random coloring, directly coloring the black-white hand drawing according to a preset random coloring model.
And 103, when the coloring type is judged to be interactive coloring, obtaining the coloring operation of the black-and-white hand drawing input by the user, and coloring the black-and-white hand drawing according to the coloring operation.
After obtaining the black-white hand drawing and the coloring type of the black-white hand drawing, judging what the coloring type is, and when judging that the coloring type is interactive coloring, indicating that the coloring of the hand drawing is realized under the control of a user, obtaining the coloring operation of the black-white hand drawing input by the user, and coloring the black-white hand drawing according to the coloring operation.
In this embodiment, when a black-and-white hand drawing to be colored is obtained, the coloring type of the black-and-white hand drawing is obtained, then when the coloring type of the black-and-white hand drawing is judged to be random coloring, the black-and-white hand drawing is colored according to a preset random coloring model, when the coloring type of the to-be-colored hand drawing is judged to be interactive coloring, the coloring operation of the black-and-white hand drawing input by a user is obtained, and the black-and-white hand drawing is colored according to the coloring operation.
The above is an embodiment one of a method for coloring a cartoon hand drawing provided in the embodiment of the present application, and the following is an embodiment two of a method for coloring a cartoon hand drawing provided in the embodiment of the present application.
Referring to fig. 2, a flowchart of a second embodiment of a coloring method for a cartoon hand drawing in the embodiment of the present application includes:
step 201, a color image to be re-colored is acquired.
In this embodiment, not only the black-white hand drawing may be colored, but also the color image may be re-colored, and when the color image is re-colored, the color image to be re-colored needs to be acquired first.
Step 202, preprocessing the color image.
In order to obtain better coloring effect, the extracted contour edge is more accurate, and the color image is first preprocessed before the contour of the color image is extracted, and the preprocessing in this embodiment may be performed simultaneously with the graying and the gaussian filtering, or may be one of the two, where the gaussian filtering is used to suppress noise points in the image so as not to affect the subsequent processing.
And 203, extracting the outline of the preprocessed color image to obtain black-white hand drawing.
After the color image is preprocessed, the contour of the preprocessed color image is extracted to obtain a black-and-white hand drawing.
It will be appreciated that the method of contour extraction may be an adaptive thresholding method, i.e. include
1) The image is divided into a number of smaller blocks and then all small blocks pixel mean is used as a threshold.
2) And comparing the pixel value corresponding to each pixel point in the image with the threshold value, then setting the pixel value as black or white, and setting the pixel value as the contour point when the pixel value is smaller than the average value and setting the pixel value as black.
And 204, when the coloring type is judged to be random coloring, coloring the black-and-white hand drawing according to a preset random coloring model.
It should be noted that, the preset random coloring model in this embodiment includes: generating an antagonism network coloring model, wherein the generated antagonism network coloring model is obtained by training the generated antagonism network.
Firstly, the generating countermeasure network comprises a generator and a discriminator, wherein the generator is used for generating a color picture, the discriminator is used for judging whether the color picture generated by the generator is real, in the training process, a black-white hand-drawn image is used as the input of a generator model, the generator model extracts key features of the image layer by layer, then random noise is combined, the highest confidence color is selected from a training set according to the extracted key features, a color image is generated, and then the color image generated by the generating model and the real color image are used as the input of a discriminating model; the judging model main extracts the characteristics of the true and false images, and then obtains judging probability by using a Sigmoid function; the generator and the arbiter are continuously game until the generator can generate a perfect color model.
Further, in order to make the coloring result more real and clear, in this embodiment, when the generator performs up-sampling, the convolution calculation is performed after the input image is scaled to twice the size.
And 205, when the coloring type is judged to be interactive coloring, acquiring the coloring color of the black-and-white hand drawing input by a user.
And 206, coloring the coloring area corresponding to the coloring color according to the coloring color, wherein a preset corresponding relation is established between the coloring area and the coloring color.
It should be noted that, in order to reduce the problem of color overflow in interactive coloring, in this embodiment, the contour features are used to segment the regions, and then the specific region is filled with the specified colors through the color condition limiting network, that is, one color is correspondingly filled in one region, so as to achieve the purpose of controllable coloring and effectively reduce the problem of color overflow. The filling of the color of the region may be performed in various ways, and is not particularly limited in this embodiment.
In this embodiment, when a black-and-white hand drawing to be colored is obtained, the coloring type of the black-and-white hand drawing is obtained, then when the coloring type of the black-and-white hand drawing is judged to be random coloring, the black-and-white hand drawing is colored according to a preset random coloring model, when the coloring type of the to-be-colored hand drawing is judged to be interactive coloring, the coloring operation of the black-and-white hand drawing input by a user is obtained, and the black-and-white hand drawing is colored according to the coloring operation.
The foregoing is an embodiment two of a method for coloring a cartoon hand drawing provided in the embodiments of the present application, and the following is an embodiment of a device for coloring a cartoon hand drawing provided in the embodiments of the present application.
Referring to fig. 3, a schematic structural diagram of an embodiment of a relay node in the embodiments of the present application includes:
the device comprises a first image acquisition module 301, a coloring type acquisition module 302, a main control module 303, a random coloring module 304 and an interactive coloring module 305;
a first image acquisition module 301, configured to acquire a black-and-white hand drawing to be colored;
a coloring type obtaining module 302, configured to obtain a coloring type of a black-and-white hand drawing;
the main control module 303 is configured to trigger the random coloring module 304 when the coloring type is determined to be random coloring, and trigger the interactive coloring module 305 when the coloring type is determined to be interactive coloring;
the random coloring module 304 is configured to color a black-and-white hand drawing according to a preset random coloring model;
the interactive coloring module 305 is configured to obtain a coloring operation of the black-and-white hand drawing input by the user, and color the black-and-white hand drawing according to the coloring operation.
Further, the method further comprises the following steps: a second image acquisition module 306 and a contour extraction module 307;
a second image acquisition module 306 for acquiring a color image;
the contour extraction module 307 is configured to extract a contour of the color image, obtain a black-white hand drawing, and send the black-white hand drawing to the first image acquisition module 301.
Further, the method further comprises the following steps: a preprocessing module 308;
the preprocessing module 308 is configured to preprocess the color image, and send the preprocessed color image to the contour extraction module 307.
The contour extraction module 307 is specifically configured to extract the contour of the color image according to the adaptive threshold method, and obtain a black-and-white hand drawing.
Further, the presetting of the random coloring model includes: generating an antagonism network coloring model, wherein the generated antagonism network coloring model is obtained by training the generated antagonism network.
Further, the coloring operation includes coloring color;
the coloring of the black-white hand drawing according to the coloring operation specifically comprises:
and coloring the coloring area corresponding to the coloring color according to the coloring color, wherein a preset corresponding relation is established between the coloring area and the coloring color.
In this embodiment, when a black-and-white hand drawing to be colored is obtained, the coloring type of the black-and-white hand drawing is obtained, then when the coloring type of the black-and-white hand drawing is judged to be random coloring, the black-and-white hand drawing is colored according to a preset random coloring model, when the coloring type of the to-be-colored hand drawing is judged to be interactive coloring, the coloring operation of the black-and-white hand drawing input by a user is obtained, and the black-and-white hand drawing is colored according to the coloring operation.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the above-described power grid network to be installed, the device and the unit may refer to the corresponding process in the foregoing method embodiment, and will not be described herein again.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, for example, multiple units or components may be combined or may be integrated into another power network to be installed, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-only memory (ROM), a random access memory (RAM, randomAccessMemory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above embodiments are merely for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (8)
1. A method of coloring a caricature hand drawing, comprising:
acquiring black-white hand drawings to be colored and the coloring types of the black-white hand drawings;
when the coloring type is judged to be random coloring, coloring the black-white hand drawing according to a preset random coloring model;
when the coloring type is judged to be interactive, the coloring operation of the black-white hand drawing input by a user is obtained, and the black-white hand drawing is colored according to the coloring operation;
the user is a professional, and the coloring operation comprises coloring;
the step of coloring the black-white hand drawing according to the coloring operation specifically comprises the following steps:
and coloring the coloring area corresponding to the coloring color according to the coloring color, wherein a preset corresponding relation is established between the coloring area and the coloring color.
2. The method for coloring a caricature hand drawing according to claim 1, further comprising:
acquiring a color image to be re-colored;
and extracting the outline of the color image to obtain the black-white hand drawing.
3. The method for coloring a caricature hand drawing according to claim 2, wherein said extracting contours of said color image, prior to obtaining said black and white hand drawing, further comprises:
preprocessing the color image, and executing subsequent steps on the preprocessed color image.
4. A device for coloring a caricature hand drawing, comprising: the device comprises a first image acquisition module, a coloring type acquisition module, a main control module, a random coloring module and an interactive coloring module;
the first image acquisition module is used for acquiring black-and-white hand drawings to be colored;
the coloring type acquisition module is used for acquiring the coloring type of the black-white hand drawing;
the main control module is used for triggering the random coloring module when judging that the coloring type is random coloring and triggering the interactive coloring module when judging that the coloring type is interactive coloring;
the random coloring module is used for coloring the black-white hand drawing according to a preset random coloring model;
the interactive coloring module is used for acquiring the coloring operation of the black-white hand drawing input by a user and coloring the black-white hand drawing according to the coloring operation;
the user is a professional, and the coloring operation comprises coloring;
the step of coloring the black-white hand drawing according to the coloring operation specifically comprises the following steps:
and coloring the coloring area corresponding to the coloring color according to the coloring color, wherein a preset corresponding relation is established between the coloring area and the coloring color.
5. The device for coloring a caricature hand drawing according to claim 4, further comprising: the second image acquisition module and the contour extraction module;
the second image acquisition module is used for acquiring a color image;
the contour extraction module is used for extracting the contour of the color image to obtain the black-and-white hand drawing, and sending the black-and-white hand drawing to the first image acquisition module.
6. The device for coloring a caricature hand drawing according to claim 5, further comprising: a preprocessing module;
the preprocessing module is used for preprocessing the color image and sending the preprocessed color image to the contour extraction module.
7. The device for coloring a caricature hand drawing according to claim 5, wherein the contour extraction module is specifically configured to extract the contour of the color image according to an adaptive threshold method, so as to obtain the black-and-white hand drawing.
8. The device for coloring a caricature hand drawing according to claim 4, wherein said preset random coloring model comprises: generating an antagonism network coloring model, wherein the generated antagonism network coloring model is obtained by training a generated antagonism network.
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| CN107330956B (en) * | 2017-07-03 | 2020-08-07 | 广东工业大学 | Cartoon hand drawing unsupervised coloring method and device |
| CN108830912B (en) * | 2018-05-04 | 2021-04-16 | 北京航空航天大学 | Interactive gray image coloring method for depth feature-based antagonistic learning |
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