CN114339066A - Image processing method, device, terminal and medium - Google Patents
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- 238000005429 filling process Methods 0.000 claims description 33
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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
- G06T11/40—Filling a planar surface by adding surface attributes, e.g. colour or texture
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Abstract
The embodiment of the invention discloses an image processing method, an image processing device, a terminal and a medium. The image processing method comprises the following steps: graying the picture to obtain a grayscale image; carrying out slicing processing on the gray level image to obtain at least two slice images; filling the slice image; and superposing at least two slice images to obtain a composite image, and processing the image into a concise style to realize the diversification of image types.
Description
Technical Field
The embodiment of the invention relates to the technical field of image processing, in particular to an image processing method, an image processing device, a terminal and a medium.
Background
The times are continuously developed, the photographing is the most important entertainment mode for people, the favorite photos can be photographed at any time and any place when a mobile phone is taken out, and the photos can have various artistic effects with different styles after being processed by various filters, so that different artistic experiences of people are met. Therefore, processing of photos has become daily, and an image processing technology will become a hot research and development direction of a terminal technology.
At present, photos shot by users are processed into sketch types such as a magic camera, and the magic camera abstractly sketches human head images and then forms interesting sketch character images by matching with props, bodies and the like with various styles, so that the magic camera is popular with the users. However, the magic camera can only process the photos into a sketch style, the style is single, the images are complex, the images cannot be simplified, and the diversification of the image processing cannot be realized. Therefore, how to process the picture into a concise style and realize the diversification of the image types is an urgent problem to be solved.
Disclosure of Invention
An object of one or more embodiments of the present specification is to provide an image processing method, an apparatus, a terminal, and a medium, which can process a picture into a concise style and realize diversification of image types.
To solve the above technical problem, one or more embodiments of the present specification are implemented as follows:
in a first aspect, an image processing method is provided, including: graying the picture to obtain a grayscale image; carrying out slicing processing on the gray level image to obtain at least two slice images; filling the slice image; and overlapping at least two slice images to obtain a composite image.
In a second aspect, an image processing apparatus is provided, including: the graying module is used for graying the picture to obtain a grayscale image; the slicing processing module is used for carrying out slicing processing on the gray level image to obtain at least two slice images; the filling processing module is used for filling the slice image; and the superposition module is used for superposing at least two slice images to obtain a composite image.
In a third aspect, a terminal is proposed, comprising a memory, a processor, a program stored on said memory and executable on said processor, and a data bus for enabling a connection communication between said processor and said memory, said program, when executed by the processor, implementing the steps of the image processing method as described above.
In a fourth aspect, a storage medium for a computer readable storage is proposed, the storage medium storing one or more programs which, when executed by one or more processors, implement the steps of the image processing method as described above.
As can be seen from the technical solutions provided by one or more embodiments of the present disclosure, in the image processing method provided by the embodiments of the present disclosure, when an image is processed, the image is grayed to obtain a grayscale image, and then the grayscale image is sliced to obtain at least two slice images, where the obtained grayscale values of the image areas in the at least two slice images are different, and the processing is further processing and different processing on the grayscale image, so that the image lines in the slice images are simplified, and multiple slice images are obtained, and the purpose is to superimpose the at least two slice images subsequently, so that composite images with different styles are formed. Then, the slice images are respectively filled, and the filling process here may also be in various manners, such as gray filling or color block filling with different gray values, so that the slice images may have various conversion manners, and the graphic lines in the slice images are further simplified. And finally, overlapping at least two slice images to obtain a composite image, wherein the process of forming the slice images and the filling process can have various processing modes, so that the images can be processed into a concise style, and the variety diversification of the composite image is realized. The image processing method provided by the embodiment of the invention can be suitable for camera modules and gallery modules of mobile phone terminals or other terminals, and a user can select the processing options of slicing processing and filling processing which meet the requirements of the user in the image processing method to process the photo into an image which achieves the satisfactory effect of the user when the user takes the photo, so that a special illustration effect is formed, and a default processing option can be adopted, so that the operation is convenient. The processed picture can be applied to occasions such as head portraits, posters, advertisements and the like of users. In addition, the image processing is an important function of the mobile phone terminal, and the image processing method provided by the embodiment of the invention can obtain pictures with concise styles, so that the mobile phone terminal has the performance of special image processing effect, and the satisfaction degree of a user on the mobile phone terminal is improved.
Drawings
In order to more clearly illustrate one or more embodiments or prior art solutions of the present specification, reference will now be made briefly to the attached drawings, which are needed in the description of one or more embodiments or prior art, and it should be apparent that the drawings in the description below are only some of the embodiments described in the specification, and that other drawings may be obtained by those skilled in the art without inventive exercise.
Fig. 1 is a schematic step diagram of an image processing method according to an embodiment of the present invention.
Fig. 2 is a schematic step diagram of another image processing method according to an embodiment of the present invention.
Fig. 3 is a schematic step diagram of another image processing method according to an embodiment of the present invention.
Fig. 4 is a schematic step diagram of another image processing method according to an embodiment of the present invention.
Fig. 5 is a schematic step diagram of another image processing method according to an embodiment of the present invention.
Fig. 6 is a schematic step diagram of another image processing method according to an embodiment of the present invention.
FIG. 7 is a schematic diagram illustrating steps of another image processing method according to an embodiment of the present invention
Fig. 8 is a schematic diagram of a grayscale image obtained by graying a picture in an image processing method according to an embodiment of the present invention.
Fig. 9 is a schematic diagram of three slice images obtained by performing slice processing on a grayscale image in another image processing method provided by an embodiment of the present invention.
FIG. 10 is a schematic diagram of a graphics area before performing a folding process on the outline of the graphics area in a slice in another image processing method according to an embodiment of the present invention;
fig. 11 is a schematic diagram of a graphics area after performing a polyline processing on the outline of the graphics area in a slice diagram in another image processing method provided by the embodiment of the present invention;
FIG. 12 is a schematic diagram of a filling process for a slice in still another image processing method according to an embodiment of the present invention;
fig. 13 is a schematic diagram of the three slice images shown in fig. 9 after the contour of the graphic region is subjected to the folding processing and the slice image filling processing, respectively.
Fig. 14 is a schematic diagram of the processed gray-scale image shown in fig. 8 by using still another image processing method provided by the embodiment of the present invention.
Fig. 15 is a schematic diagram of the processed gray-scale image shown in fig. 8 by using still another image processing method provided by the embodiment of the present invention.
Fig. 16 is a schematic structural diagram of an image processing apparatus according to an embodiment of the present invention.
Fig. 17 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions in the present specification better understood, the technical solutions in one or more embodiments of the present specification will be clearly and completely described below with reference to the accompanying drawings in one or more embodiments of the present specification, and it is obvious that the one or more embodiments described are only a part of the embodiments of the present specification, and not all embodiments. All other embodiments that can be derived by a person skilled in the art from one or more of the embodiments described herein without making any inventive step shall fall within the scope of protection of this document.
The image processing method provided by the embodiment of the invention can be suitable for terminals with camera modules or image library processing modules, such as mobile phones, PCs, video cameras and other electronic equipment, and the final composite image is obtained by processing the image into a plurality of slice images, respectively performing different processing on the plurality of slice images and then overlapping the plurality of slice images. The visible image processing process relates to a plurality of slices and a plurality of processing modes, and the graphic lines in the slices are simplified in the processing process, so that the pictures can be processed into a concise style, and the diversification of the image types is realized. The image processing method and its respective steps provided in this specification will be described in detail below.
It should be noted that, although the drawings provided in the embodiments of the present invention are described with human faces as processing targets, the present invention is not limited to the processing targets of the image processing methods provided in the embodiments of the present invention.
Example one
Fig. 1 is a schematic diagram illustrating steps of an image processing method according to an embodiment of the present invention. It can be understood that the image processing method provided by the embodiment of the invention is suitable for the terminal equipment with the camera module or the image processing module, can process the pictures into a concise style, and has diversified image types. The image processing method comprises the following steps:
step 10: graying the picture to obtain a grayscale image;
the picture may be a picture obtained by shooting with a terminal such as a mobile phone or a picture stored in a gallery and needing to be processed, the embodiment of the present invention takes a human face as an example to describe the image processing method, for example, 8 is a grayscale image obtained by graying the picture, and the following describes the image processing method provided by the embodiment of the present invention with reference to the grayscale image obtained in fig. 8.
When the gray level of the picture is processed, the picture is read firstly, and then the color in the picture is removed, so that the gray level image is obtained.
The image processing method provided by the embodiment of the invention can realize that the terminals such as the mobile phone and the like have special image processing effects, obtain images with concise styles, diversify the image styles and obviously improve the satisfaction degree of users on the terminals such as the mobile phone and the like.
Step 20: carrying out slicing processing on the gray level image to obtain at least two slice images;
the method comprises the steps of slicing the gray image to obtain at least two slice images, wherein the slicing processing is to process the gray image according to a selected preset gray value, and can be simply understood as a cutting mode, and pixel points larger than the preset gray value uniformly adopt the same first gray value, and pixel points smaller than the preset gray value uniformly adopt another second gray value. Of course, the image processing method provided by the embodiment of the present invention includes performing slice processing on the grayscale image to obtain at least two slice images, and after performing corresponding processing on the at least two slice images, superimposing the at least two slice images to obtain a final composite image. Therefore, at least two preset gray values need to be set, where the first gray value is different from the second gray value, the first gray value or the second gray value may be the same as the preset gray value, for example, the first gray value is 255, and the second gray value is the preset gray value, so that the image line in the slice image can be simplified to the maximum. At least two different slice images can thus be obtained.
Fig. 9 shows three slice images obtained by slicing the grayscale image, in which the preset grayscale value is increased from left to right in the figure.
The purpose of slicing the gray level image is to simplify the gray level image, reduce the complexity of the graph lines in the gray level image and prepare for obtaining a composite image with a concise style, and in addition, as the gray level values of pixel points in more than two obtained slice images can adopt any gray level value from 0 to 255, diversified slice images can be obtained, and the diversity of the slice images is increased by more than two slice images, so that the diversity of the composite image is improved.
In addition, to further simplify the graph of the slice, an area threshold for filtering the graph area in the slice may be set, for example, a small block of the graph in the slice may be deleted when the area of the small block is smaller than the area threshold.
Step 30: filling the slice image;
and filling each slice image, wherein the filling treatment can be gray filling or color block filling treatment of pixel points of two gray values distinguished from the slice image, the filled gray value can be any gray value in a gray value range in the same slice image, and the color block filling can also be any color block as long as the original pixel points of the two gray values can be distinguished. The filled gray values or color patches need to be different in different slices.
The filling principle may be to select gray scales with similar colors according to the original color of the image in the slice image for filling, for example, if the original color of the image in the slice image is darker, the gray scale with darker color is selected for filling. The same selection principle can also be referred to for selecting the color brightness during the color block filling process. Fig. 13 is an effect diagram after the filling process is performed on the three slices shown in fig. 9, and the three effect diagrams shown in fig. 13 correspond to the slices shown in fig. 9 from left to right, and it can be seen that the gray levels close to the filling with the darker colors in the original graphics in the slices are close to the gray levels close to the filling with the lighter colors in the original graphics in the slices.
Step 40: and overlapping at least two slice images to obtain a composite image.
And finally, overlapping at least two slice images to obtain a composite image. And processing the more than two slice images respectively, and then superposing the slice images to obtain a composite image. It can be understood that the principle of superimposing at least two slices is to reduce the occlusion between the slices as much as possible, so that the images in the slices are displayed as much as possible, and a composite image with a concise style is brought to the user. Fig. 14 is a composite view obtained by superimposing the three slices of fig. 13 after the filling process is completed. Fig. 15 is a composite image obtained by superimposing three slices after performing the filling process using color patches during the filling process.
It can be seen that the image processing method provided by the embodiment of the present invention performs filling processing on at least two slice images, and then superimposes the two slice images to obtain a composite image. The slice images can form various patterns, more than two slice images can adopt different gray levels or color block filling and the like to carry out various adjustments on the gray level images during filling processing, and the complexity of the image lines in the slice images is reduced as much as possible, so that the composite images with simple styles can be obtained, but the image patterns are diversified. The composite image obtained by the image processing method provided by the embodiment of the invention has a unique illustration effect, can be applied to occasions such as head portraits, posters, advertisements and the like of users, can be made into a mobile phone APP and downloaded by users in application stores of mobile phone manufacturers, and improves the activity of the users, or can be made into a PC (personal computer) version processing tool for the users.
Referring to FIG. 2, in some embodiments, step 30: before the filling processing is performed on the slice image, the image processing method provided by the embodiment of the invention further includes:
step 50: and (5) performing a creasing treatment on the outline of the graphic area in the cutting chart.
Before the filling process is performed on the slice map, the contour of the graphic area in the slice map is subjected to a polyline process, as shown in fig. 10 and 11, the arc line between the point a and the point B in fig. 10 is subjected to the polyline process to obtain a straight line between the point a and the point B in fig. 11, and therefore the contour of the graphic in the slice map is simplified.
It can be seen that the key of the polyline processing is that two endpoints selected by polyline can be selected correspondingly according to the degree of brevity, and the degree of distance selected by the endpoints can be set according to the degree of brevity in software development, where the curvature of the arc between the two endpoints needs to be considered, the smaller the curvature, the farther the two endpoints can be selected, and the larger the curvature, the closer the two endpoints need to be selected.
Referring to fig. 3, in some embodiments, the image processing method provided by the embodiment of the present invention includes: filling the slice image, specifically comprising:
step 300: and carrying out gray filling or color block filling on the graphic area in the slice image, and carrying out transparentizing treatment on the non-graphic area in the slice image.
The method comprises the steps of filling gray levels or color blocks in a graph area caused by gray levels in a slice image, and performing transparentization treatment on a non-graph area, namely an area outside the graph area, in which the gray levels of pixel points are replaced by 255, so that the non-graph area in the slice image can be prevented from shielding graph areas in other slice images when more than two slice images are superposed. As shown in fig. 12, the effect of performing the gradation filling on the pattern region E and the transparentizing processing on the non-pattern region F is obtained, and the entire pattern in the slice image is simplified. Fig. 12 is a frame for explaining the area range of the non-graphics area F corresponding to the graphics area E in the slice.
Referring to fig. 4, in some embodiments, the image processing method provided by the embodiment of the present invention includes: superposing the at least two slice images to obtain a composite image, which specifically comprises the following steps:
step 400: and sequentially overlapping the areas of the graphic areas in the at least two slice images from large to small, wherein the overlapping sequence is from back to front.
The principle of overlapping at least two slices is that the area of the image areas in the slices is sequentially overlapped from large to small, the overlapping sequence is from back to front, where "front" is the direction towards the user when the user views the composite image, and "back" is the opposite direction. The gray value of the slice image with the larger area of the graphic area is larger, and the gray value of the slice image with the smaller area of the graphic area is smaller, so that the slice image with the largest area of more than two slice images is placed at the rearmost and is sequentially superposed, and the slice image with the smallest area is placed at the foremost.
Referring to FIG. 5, in some embodiments, step 40: after the at least two slice images are superimposed to obtain a composite image, the image processing method provided by the embodiment of the invention further includes:
step 60: the non-graphic areas in the composite image are filled with white or other colors.
After the composite image is obtained, the non-graphic area in the composite image is filled with white or other colors, so that more diversified requirements of users can be met.
Referring to fig. 6, in some embodiments, the image processing method provided by the embodiment of the present invention includes: the method for processing the gray level image includes the following steps of performing slicing processing on the gray level image to obtain at least two slice images, and specifically includes:
step 200: setting at least two preset gray values;
at least two preset gray values such as 240, 200, 160 are set. The selection of the preset gray value may be a gradient selection, so that the slice image is more comprehensively presented.
Step 210: comparing the RGB value of the pixel point in the gray image with a preset gray value;
and checking the RGB value of the pixel point in the gray image and the preset gray value based on the preset gray value, so as to correspondingly modify the RGB value of the pixel point.
Step 220: if the RGB value of the pixel point is larger than the preset gray value, the RGB value of the pixel point is modified to be 255, otherwise, the RGB value of the pixel point is modified to be an adjustable gray value;
if the RGB value of a certain pixel point is larger than the preset gray value, the RGB value of the pixel point is modified to be 255, if the RGB value of the pixel point is smaller than or equal to the preset gray value, the RBG value of the pixel point is modified to be the preset gray value, or other gray values, or black and the like, the values are called as adjustable gray values, and the selection range is large.
Step 230: and generating the gray image after the RGB value of the pixel point is modified into a slice image corresponding to a preset gray value to obtain at least two slice images.
And after the RGB values of all the pixel points in the gray level image are modified, more than two section images corresponding to the preset gray level value are obtained.
Referring to fig. 7, in some embodiments, the image processing method provided by the embodiments of the present invention includes: the method for modifying the RGB value of the pixel point into the adjustable gray value specifically comprises the following steps:
step 221: and modifying the RGB value of the pixel point into preset gray values, wherein at least two preset gray values are different from each other.
If the RGB value of the pixel point is smaller than or equal to the preset gray value, the RBG value of the pixel point is modified into the preset gray value, and at least two preset gray values are different from each other, so that different section pictures can be obtained, and the diversity of the section pictures is met.
As can be seen from the above analysis, in the image processing method provided in the embodiment of the present invention, when an image is processed, the image is grayed to obtain a grayscale image, and then the grayscale image is sliced to obtain at least two slice images, where the obtained grayscale values of the image areas in the at least two slice images are different, which is further processing and different processing on the grayscale image, so that the image lines in the slice images are simplified, and a plurality of slice images are obtained, and the purpose is to subsequently superimpose the at least two slice images, so that a composite image with different patterns is formed. Then, the slice images are respectively filled, and the filling process here may also be in various manners, such as gray filling or color block filling with different gray values, so that the slice images may have various conversion manners, and the graphic lines in the slice images are further simplified. And finally, overlapping at least two slice images to obtain a composite image, wherein the process of forming the slice images and the filling process can have various processing modes, so that the images can be processed into a concise style, and the variety diversification of the composite image is realized. The image processing method provided by the embodiment of the invention can be suitable for camera modules and gallery modules of mobile phone terminals or other terminals, and a user can select the processing options of slicing processing and filling processing which meet the requirements of the user in the image processing method to process the photo into an image which achieves the satisfactory effect of the user when the user takes the photo, so that a special illustration effect is formed, and a default processing option can be adopted, so that the operation is convenient. The processed picture can be applied to occasions such as head portraits, posters, advertisements and the like of users. In addition, the image processing is an important function of the mobile phone terminal, and the image processing method provided by the embodiment of the invention can obtain pictures with concise styles, so that the mobile phone terminal has the performance of special image processing effect, and the satisfaction degree of a user on the mobile phone terminal is improved.
Example two
Referring to fig. 16, an image processing apparatus according to an embodiment of the present invention includes:
the graying module 10 is used for graying the picture to obtain a grayscale image;
the picture may be a picture obtained by shooting with a terminal such as a mobile phone or a picture stored in a gallery and needing to be processed, the embodiment of the present invention takes a human face as an example to describe the image processing method, for example, 8 is a grayscale image obtained by graying the picture, and the following describes the image processing method provided by the embodiment of the present invention with reference to the grayscale image obtained in fig. 8.
When the gray level of the picture is processed, the picture is read firstly, and then the color in the picture is removed, so that the gray level image is obtained.
The image processing method provided by the embodiment of the invention can realize that the terminals such as the mobile phone and the like have special image processing effects, obtain images with concise styles, diversify the image styles and obviously improve the satisfaction degree of users on the terminals such as the mobile phone and the like.
The slicing processing module 20 is configured to perform slicing processing on the grayscale image to obtain at least two slice images;
the method comprises the steps of slicing the gray image to obtain at least two slice images, wherein the slicing processing is to process the gray image according to a selected preset gray value, and can be simply understood as a cutting mode, and pixel points larger than the preset gray value uniformly adopt the same first gray value, and pixel points smaller than the preset gray value uniformly adopt another second gray value. Of course, the image processing method provided by the embodiment of the present invention includes performing slice processing on the grayscale image to obtain at least two slice images, and after performing corresponding processing on the at least two slice images, superimposing the at least two slice images to obtain a final composite image. Therefore, at least two preset gray values need to be set, where the first gray value is different from the second gray value, the first gray value or the second gray value may be the same as the preset gray value, for example, the first gray value is 255, and the second gray value is the preset gray value, so that the image line in the slice image can be simplified to the maximum. At least two different slice images can thus be obtained.
Fig. 9 shows three slice images obtained by slicing the grayscale image, in which the preset grayscale value is increased from left to right in the figure.
The purpose of slicing the gray level image is to simplify the gray level image, reduce the complexity of the graph lines in the gray level image and prepare for obtaining a composite image with a concise style, and in addition, as the gray level values of pixel points in more than two obtained slice images can adopt any gray level value from 0 to 255, diversified slice images can be obtained, and the diversity of the slice images is increased by more than two slice images, so that the diversity of the composite image is improved.
In addition, to further simplify the graph of the slice, an area threshold for filtering the graph area in the slice may be set, for example, a small block of the graph in the slice may be deleted when the area of the small block is smaller than the area threshold.
A filling processing module 30, configured to perform filling processing on the slice;
and filling each slice image, wherein the filling treatment can be gray filling or color block filling treatment of pixel points of two gray values distinguished from the slice image, the filled gray value can be any gray value in a gray value range in the same slice image, and the color block filling can also be any color block as long as the original pixel points of the two gray values can be distinguished. The filled gray values or color patches need to be different in different slices.
The filling principle may be to select gray scales with similar colors according to the original color of the image in the slice image for filling, for example, if the original color of the image in the slice image is darker, the gray scale with darker color is selected for filling. The same selection principle can also be referred to for selecting the color brightness during the color block filling process. Fig. 13 is an effect diagram after the filling process is performed on the three slices shown in fig. 9, and the three effect diagrams shown in fig. 13 correspond to the slices shown in fig. 9 from left to right, and it can be seen that the gray levels close to the filling with the darker colors in the original graphics in the slices are close to the gray levels close to the filling with the lighter colors in the original graphics in the slices.
And the superposition module 40 is used for superposing the at least two slice images to obtain a composite image.
And finally, overlapping at least two slice images to obtain a composite image. And processing the more than two slice images respectively, and then superposing the slice images to obtain a composite image. It can be understood that the principle of superimposing at least two slices is to reduce the occlusion between the slices as much as possible, so that the images in the slices are displayed as much as possible, and a composite image with a concise style is brought to the user. Fig. 14 is a composite view obtained by superimposing the three slices of fig. 13 after the filling process is completed. Fig. 15 is a composite image obtained by superimposing three slices after performing the filling process using color patches during the filling process.
It can be seen that the image processing method provided by the embodiment of the present invention performs filling processing on at least two slice images, and then superimposes the two slice images to obtain a composite image. The slice images can form various patterns, more than two slice images can adopt different gray levels or color block filling and the like to carry out various adjustments on the gray level images during filling processing, and the complexity of the image lines in the slice images is reduced as much as possible, so that the composite images with simple styles can be obtained, but the image patterns are diversified. The composite image obtained by the image processing method provided by the embodiment of the invention has a unique illustration effect, can be applied to occasions such as head portraits, posters, advertisements and the like of users, can be made into a mobile phone APP and downloaded by users in application stores of mobile phone manufacturers, and improves the activity of the users, or can be made into a PC (personal computer) version processing tool for the users.
As can be seen from the above analysis, in the image processing method provided in the embodiment of the present invention, when an image is processed, the image is grayed to obtain a grayscale image, and then the grayscale image is sliced to obtain at least two slice images, where the obtained grayscale values of the image areas in the at least two slice images are different, which is further processing and different processing on the grayscale image, so that the image lines in the slice images are simplified, and a plurality of slice images are obtained, and the purpose is to subsequently superimpose the at least two slice images, so that a composite image with different patterns is formed. Then, the slice images are respectively filled, and the filling process here may also be in various manners, such as gray filling or color block filling with different gray values, so that the slice images may have various conversion manners, and the graphic lines in the slice images are further simplified. And finally, overlapping at least two slice images to obtain a composite image, wherein the process of forming the slice images and the filling process can have various processing modes, so that the images can be processed into a concise style, and the variety diversification of the composite image is realized. The image processing method provided by the embodiment of the invention can be suitable for camera modules and gallery modules of mobile phone terminals or other terminals, and a user can select the processing options of slicing processing and filling processing which meet the requirements of the user in the image processing method to process the photo into an image which achieves the satisfactory effect of the user when the user takes the photo, so that a special illustration effect is formed, and a default processing option can be adopted, so that the operation is convenient. The processed picture can be applied to occasions such as head portraits, posters, advertisements and the like of users. In addition, the image processing is an important function of the mobile phone terminal, and the image processing method provided by the embodiment of the invention can obtain pictures with concise styles, so that the mobile phone terminal has the performance of special image processing effect, and the satisfaction degree of a user on the mobile phone terminal is improved.
EXAMPLE III
Referring to fig. 17, in order to provide a terminal according to an embodiment of the present invention, the terminal 1700 includes a memory 1720, a processor 1710, a program stored in the memory 1720 and operable on the processor 1710, and a data bus 1740 for implementing connection communication between the processor 1710 and the memory 1720, where the program, when executed by the processor 1710, implements the steps of the image processing method shown in fig. 1 to 7, and specifically executes the following steps:
step 10: graying the picture to obtain a grayscale image;
the picture may be a picture obtained by shooting with a terminal such as a mobile phone or a picture stored in a gallery and needing to be processed, the embodiment of the present invention takes a human face as an example to describe the image processing method, for example, 8 is a grayscale image obtained by graying the picture, and the following describes the image processing method provided by the embodiment of the present invention with reference to the grayscale image obtained in fig. 8.
When the gray level of the picture is processed, the picture is read firstly, and then the color in the picture is removed, so that the gray level image is obtained.
The image processing method provided by the embodiment of the invention can realize that the terminals such as the mobile phone and the like have special image processing effects, obtain images with concise styles, diversify the image styles and obviously improve the satisfaction degree of users on the terminals such as the mobile phone and the like.
Step 20: carrying out slicing processing on the gray level image to obtain at least two slice images;
the method comprises the steps of slicing the gray image to obtain at least two slice images, wherein the slicing processing is to process the gray image according to a selected preset gray value, and can be simply understood as a cutting mode, and pixel points larger than the preset gray value uniformly adopt the same first gray value, and pixel points smaller than the preset gray value uniformly adopt another second gray value. Of course, the image processing method provided by the embodiment of the present invention includes performing slice processing on the grayscale image to obtain at least two slice images, and after performing corresponding processing on the at least two slice images, superimposing the at least two slice images to obtain a final composite image. Therefore, at least two preset gray values need to be set, where the first gray value is different from the second gray value, the first gray value or the second gray value may be the same as the preset gray value, for example, the first gray value is 255, and the second gray value is the preset gray value, so that the image line in the slice image can be simplified to the maximum. At least two different slice images can thus be obtained.
Fig. 9 shows three slice images obtained by slicing the grayscale image, in which the preset grayscale value is increased from left to right in the figure.
The purpose of slicing the gray level image is to simplify the gray level image, reduce the complexity of the graph lines in the gray level image and prepare for obtaining a composite image with a concise style, and in addition, as the gray level values of pixel points in more than two obtained slice images can adopt any gray level value from 0 to 255, diversified slice images can be obtained, and the diversity of the slice images is increased by more than two slice images, so that the diversity of the composite image is improved.
In addition, to further simplify the graph of the slice, an area threshold for filtering the graph area in the slice may be set, for example, a small block of the graph in the slice may be deleted when the area of the small block is smaller than the area threshold.
Step 30: filling the slice image;
and filling each slice image, wherein the filling treatment can be gray filling or color block filling treatment of pixel points of two gray values distinguished from the slice image, the filled gray value can be any gray value in a gray value range in the same slice image, and the color block filling can also be any color block as long as the original pixel points of the two gray values can be distinguished. The filled gray values or color patches need to be different in different slices.
The filling principle may be to select gray scales with similar colors according to the original color of the image in the slice image for filling, for example, if the original color of the image in the slice image is darker, the gray scale with darker color is selected for filling. The same selection principle can also be referred to for selecting the color brightness during the color block filling process. Fig. 13 is an effect diagram after the filling process is performed on the three slices shown in fig. 9, and the three effect diagrams shown in fig. 13 correspond to the slices shown in fig. 9 from left to right, and it can be seen that the gray levels close to the filling with the darker colors in the original graphics in the slices are close to the gray levels close to the filling with the lighter colors in the original graphics in the slices.
Step 40: and overlapping at least two slice images to obtain a composite image.
And finally, overlapping at least two slice images to obtain a composite image. And processing the more than two slice images respectively, and then superposing the slice images to obtain a composite image. It can be understood that the principle of superimposing at least two slices is to reduce the occlusion between the slices as much as possible, so that the images in the slices are displayed as much as possible, and a composite image with a concise style is brought to the user. Fig. 14 is a composite view obtained by superimposing the three slices of fig. 13 after the filling process is completed. Fig. 15 is a composite image obtained by superimposing three slices after performing the filling process using color patches during the filling process.
It can be seen that the image processing method provided by the embodiment of the present invention performs filling processing on at least two slice images, and then superimposes the two slice images to obtain a composite image. The slice images can form various patterns, more than two slice images can adopt different gray levels or color block filling and the like to carry out various adjustments on the gray level images during filling processing, and the complexity of the image lines in the slice images is reduced as much as possible, so that the composite images with simple styles can be obtained, but the image patterns are diversified. The composite image obtained by the image processing method provided by the embodiment of the invention has a unique illustration effect, can be applied to occasions such as head portraits, posters, advertisements and the like of users, can be made into a mobile phone APP and downloaded by users in application stores of mobile phone manufacturers, and improves the activity of the users, or can be made into a PC (personal computer) version processing tool for the users.
As can be seen from the above analysis, in the image processing method provided in the embodiment of the present invention, when an image is processed, the image is grayed to obtain a grayscale image, and then the grayscale image is sliced to obtain at least two slice images, where the obtained grayscale values of the image areas in the at least two slice images are different, which is further processing and different processing on the grayscale image, so that the image lines in the slice images are simplified, and a plurality of slice images are obtained, and the purpose is to subsequently superimpose the at least two slice images, so that a composite image with different patterns is formed. Then, the slice images are respectively filled, and the filling process here may also be in various manners, such as gray filling or color block filling with different gray values, so that the slice images may have various conversion manners, and the graphic lines in the slice images are further simplified. And finally, overlapping at least two slice images to obtain a composite image, wherein the process of forming the slice images and the filling process can have various processing modes, so that the images can be processed into a concise style, and the variety diversification of the composite image is realized. The image processing method provided by the embodiment of the invention can be suitable for camera modules and gallery modules of mobile phone terminals or other terminals, and a user can select the processing options of slicing processing and filling processing which meet the requirements of the user in the image processing method to process the photo into an image which achieves the satisfactory effect of the user when the user takes the photo, so that a special illustration effect is formed, and a default processing option can be adopted, so that the operation is convenient. The processed picture can be applied to occasions such as head portraits, posters, advertisements and the like of users. In addition, the image processing is an important function of the mobile phone terminal, and the image processing method provided by the embodiment of the invention can obtain pictures with concise styles, so that the mobile phone terminal has the performance of special image processing effect, and the satisfaction degree of a user on the mobile phone terminal is improved.
Example four
A storage medium provided in an embodiment of the present invention is a computer-readable storage medium, where one or more programs are stored, and the one or more programs may be executed by one or more processors to implement the steps of the image processing method shown in fig. 1 to 7, and specifically may perform the following steps:
step 10: graying the picture to obtain a grayscale image;
the picture may be a picture obtained by shooting with a terminal such as a mobile phone or a picture stored in a gallery and needing to be processed, the embodiment of the present invention takes a human face as an example to describe the image processing method, for example, 8 is a grayscale image obtained by graying the picture, and the following describes the image processing method provided by the embodiment of the present invention with reference to the grayscale image obtained in fig. 8.
When the gray level of the picture is processed, the picture is read firstly, and then the color in the picture is removed, so that the gray level image is obtained.
The image processing method provided by the embodiment of the invention can realize that the terminals such as the mobile phone and the like have special image processing effects, obtain images with concise styles, diversify the image styles and obviously improve the satisfaction degree of users on the terminals such as the mobile phone and the like.
Step 20: carrying out slicing processing on the gray level image to obtain at least two slice images;
the method comprises the steps of slicing the gray image to obtain at least two slice images, wherein the slicing processing is to process the gray image according to a selected preset gray value, and can be simply understood as a cutting mode, and pixel points larger than the preset gray value uniformly adopt the same first gray value, and pixel points smaller than the preset gray value uniformly adopt another second gray value. Of course, the image processing method provided by the embodiment of the present invention includes performing slice processing on the grayscale image to obtain at least two slice images, and after performing corresponding processing on the at least two slice images, superimposing the at least two slice images to obtain a final composite image. Therefore, at least two preset gray values need to be set, where the first gray value is different from the second gray value, the first gray value or the second gray value may be the same as the preset gray value, for example, the first gray value is 255, and the second gray value is the preset gray value, so that the image line in the slice image can be simplified to the maximum. At least two different slice images can thus be obtained.
Fig. 9 shows three slice images obtained by slicing the grayscale image, in which the preset grayscale value is increased from left to right in the figure.
The purpose of slicing the gray level image is to simplify the gray level image, reduce the complexity of the graph lines in the gray level image and prepare for obtaining a composite image with a concise style, and in addition, as the gray level values of pixel points in more than two obtained slice images can adopt any gray level value from 0 to 255, diversified slice images can be obtained, and the diversity of the slice images is increased by more than two slice images, so that the diversity of the composite image is improved.
In addition, to further simplify the graph of the slice, an area threshold may be set for filtering a small block of the graph area in the slice, for example, the small block may be deleted when the area of the small block of the graph in the slice is smaller than the area threshold.
Step 30: filling the slice image;
and filling each slice image, wherein the filling treatment can be gray filling or color block filling treatment of pixel points of two gray values distinguished from the slice image, the filled gray value can be any gray value in a gray value range in the same slice image, and the color block filling can also be any color block as long as the original pixel points of the two gray values can be distinguished. The filled gray values or color patches need to be different in different slices.
The filling principle may be to select gray scales with similar colors according to the original color of the image in the slice image for filling, for example, if the original color of the image in the slice image is darker, the gray scale with darker color is selected for filling. The same selection principle can also be referred to for selecting the color brightness during the color block filling process. Fig. 13 is an effect diagram after the filling process is performed on the three slices shown in fig. 9, and the three effect diagrams shown in fig. 13 correspond to the slices shown in fig. 9 from left to right, and it can be seen that the gray levels close to the filling with the darker colors in the original graphics in the slices are close to the gray levels close to the filling with the lighter colors in the original graphics in the slices.
Step 40: and overlapping at least two slice images to obtain a composite image.
And finally, overlapping at least two slice images to obtain a composite image. And processing the more than two slice images respectively, and then superposing the slice images to obtain a composite image. It can be understood that the principle of superimposing at least two slices is to reduce the occlusion between the slices as much as possible, so that the images in the slices are displayed as much as possible, and a composite image with a concise style is brought to the user. Fig. 14 is a composite view obtained by superimposing the three slices of fig. 13 after the filling process is completed. Fig. 15 is a composite image obtained by superimposing three slices after performing the filling process using color patches during the filling process.
It can be seen that the image processing method provided by the embodiment of the present invention performs filling processing on at least two slice images, and then superimposes the two slice images to obtain a composite image. The slice images can form various patterns, more than two slice images can adopt different gray levels or color block filling and the like to carry out various adjustments on the gray level images during filling processing, and the complexity of the image lines in the slice images is reduced as much as possible, so that the composite images with simple styles can be obtained, but the image patterns are diversified. The composite image obtained by the image processing method provided by the embodiment of the invention has a unique illustration effect, can be applied to occasions such as head portraits, posters, advertisements and the like of users, can be made into a mobile phone APP and downloaded by users in application stores of mobile phone manufacturers, and improves the activity of the users, or can be made into a PC (personal computer) version processing tool for the users.
As can be seen from the above analysis, in the image processing method provided in the embodiment of the present invention, when an image is processed, the image is grayed to obtain a grayscale image, and then the grayscale image is sliced to obtain at least two slice images, where the obtained grayscale values of the image areas in the at least two slice images are different, which is further processing and different processing on the grayscale image, so that the image lines in the slice images are simplified, and a plurality of slice images are obtained, and the purpose is to subsequently superimpose the at least two slice images, so that a composite image with different patterns is formed. Then, the slice images are respectively filled, and the filling process here may also be in various manners, such as gray filling or color block filling with different gray values, so that the slice images may have various conversion manners, and the graphic lines in the slice images are further simplified. And finally, overlapping at least two slice images to obtain a composite image, wherein the process of forming the slice images and the filling process can have various processing modes, so that the images can be processed into a concise style, and the variety diversification of the composite image is realized. The image processing method provided by the embodiment of the invention can be suitable for camera modules and gallery modules of mobile phone terminals or other terminals, and a user can select the processing options of slicing processing and filling processing which meet the requirements of the user in the image processing method to process the photo into an image which achieves the satisfactory effect of the user when the user takes the photo, so that a special illustration effect is formed, and a default processing option can be adopted, so that the operation is convenient. The processed picture can be applied to occasions such as head portraits, posters, advertisements and the like of users. In addition, the image processing is an important function of the mobile phone terminal, and the image processing method provided by the embodiment of the invention can obtain pictures with concise styles, so that the mobile phone terminal has the performance of special image processing effect, and the satisfaction degree of a user on the mobile phone terminal is improved.
In short, the above description is only a preferred embodiment of the present disclosure, and is not intended to limit the scope of the present disclosure. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present specification shall be included in the protection scope of the present specification.
The system, apparatus, module or unit illustrated in one or more of the above embodiments may be implemented by a computer chip or an entity, or by an article of manufacture with a certain functionality. One typical implementation device is a computer. In particular, the computer may be, for example, a personal computer, a laptop computer, a cellular telephone, a camera phone, a smartphone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.
Computer-readable storage media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
Claims (10)
1. An image processing method comprising:
graying the picture to obtain a grayscale image;
carrying out slicing processing on the gray level image to obtain at least two slice images;
filling the slice image;
and overlapping at least two slice images to obtain a composite image.
2. The image processing method of claim 1, prior to performing the filling process on the slice, the method further comprising:
and performing creasing treatment on the outline of the image area in the slice image.
3. The image processing method according to claim 1, wherein the filling processing of the slice specifically comprises:
and carrying out gray filling or color block filling on the graphic area in the slice image, and carrying out transparentizing treatment on the non-graphic area in the slice image.
4. The image processing method according to any of claims 1 to 3, wherein superimposing at least two of the slice images to obtain a composite image comprises:
and sequentially overlapping the areas of the graphic areas in at least two of the section pictures from large to small, wherein the overlapping sequence is from back to front.
5. The image processing method of claim 4, after superimposing at least two of the slice images to obtain a composite image, the method further comprising:
filling the non-figure area in the composite image with white or other colors.
6. The image processing method according to claim 4, wherein the slicing processing is performed on the grayscale image to obtain at least two slices, and specifically comprises:
setting at least two preset gray values;
comparing the RGB value of the pixel point in the gray image with the preset gray value;
if the RGB value of the pixel point is larger than the preset gray value, the RGB value of the pixel point is modified to be 255, otherwise, the RGB value of the pixel point is modified to be an adjustable gray value;
and generating the gray image after the RGB values of the pixel points are modified into a slice image corresponding to the preset gray value to obtain at least two slice images.
7. The image processing method according to claim 6, wherein modifying the RGB values of the pixel points to adjustable gray scale values specifically comprises:
and modifying the RGB value of the pixel point into the preset gray value, other gray values or black, wherein the at least two preset gray values are different from each other.
8. An image processing apparatus comprising:
the graying module is used for graying the picture to obtain a grayscale image;
the slicing processing module is used for carrying out slicing processing on the gray level image to obtain at least two slice images;
the filling processing module is used for filling the slice image;
and the superposition module is used for superposing at least two slice images to obtain a composite image.
9. A terminal comprising a memory, a processor, a program stored on said memory and executable on said processor, said program when executed by the processor implementing the steps of the image processing method according to any one of claims 1 to 7, and a data bus for enabling connection communication between said processor and said memory.
10. A storage medium for computer readable storage, the storage medium storing one or more programs which, when executed by one or more processors, implement the steps of the image processing method of any one of claims 1 to 7.
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