CN110097560A - Scratch drawing method and device - Google Patents
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- CN110097560A CN110097560A CN201910361707.8A CN201910361707A CN110097560A CN 110097560 A CN110097560 A CN 110097560A CN 201910361707 A CN201910361707 A CN 201910361707A CN 110097560 A CN110097560 A CN 110097560A
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000012545 processing Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 15
- 238000004364 calculation method Methods 0.000 claims abstract description 13
- 230000004048 modification Effects 0.000 claims abstract description 11
- 238000012986 modification Methods 0.000 claims abstract description 11
- 238000004040 coloring Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000010295 mobile communication Methods 0.000 claims description 2
- 238000004590 computer program Methods 0.000 claims 1
- 230000006870 function Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000013519 translation Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
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- 239000004571 lime Substances 0.000 description 1
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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
- G06F3/017—Gesture based interaction, e.g. based on a set of recognized hand gestures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/90—Dynamic range modification of images or parts thereof
- G06T5/94—Dynamic range modification of images or parts thereof based on local image properties, e.g. for local contrast enhancement
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/11—Region-based segmentation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/13—Edge detection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/194—Segmentation; Edge detection involving foreground-background segmentation
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Abstract
A kind of stingy drawing method, the method comprising the steps of: the picture processing unit obtains user's finger trace on touch screen, according to the original image region that user's finger is passed through, draws out the overstriking contour line of subject area to be scratched；According to overstriking contour line, three components are generated；Original image and three components are subjected to calculation process using stingy nomography, the picture after obtaining figure stingy roughly.User carries out local fine modification according to the picture after rough stingy figure, and a certain region in picture is arranged to foreground area, be arranged to background area or is arranged to zone of ignorance scratch to scheme to update.
Description
Technical field
The present invention relates to technical field of image processing, in particular to a kind of stingy drawing method and device.
Background technique
Stingy figure is an important technology of image and video processing, in photo processing, film special efficacy and home entertaining,
It has been widely used.In recent years, popularizing with mobile device, for mobile phone and tablet computer (with iOS and Android
Based on) rapid growth of the demand of image processing software, it is also more more and more urgent that image scratches the application of diagram technology on the mobile apparatus.So
And at present mainstream mobile platform image processing software have the shortcomings that it is following:
1. cumbersome.The stingy figure software of mainstream on current mobile platform on the market generally requires the selected whole of user
Prospect or background area could operate, so that operation is very inconvenient.
2. it is inaccurate to scratch figure.The stingy figure software of mainstream, also poor in stingy figure precision on current mobile platform on the market.
After having scratched, together with foreground area is often interweaved with background area, and since the screen of mobile platform is small, essence
The true content for plucking out user and wanting, it is extremely difficult.
Summary of the invention
Stingy drawing method of the invention and device scratch lacking for drawing system for solving on existing mobile terminal or platform
It falls into, is supplied to user a kind of more handy stingy drawing method or device easy-to-use, that improve user experience.
One of the embodiment of the present invention, the stingy drawing method on a kind of mobile terminal, comprising:
Step 1 receives the gesture operation of user's input, the operation of user is provided feedback on interface, by user's finger
Overstriking processing is made in the region of process, draws out the contour line of object to be scratched；It supports two fingers to scale translation simultaneously, allows user can
With the region of zoom figure to be scratched.
Step 2, it is thick to scratch.The overstriking contour line drawn is inputted according to user, generates three components.It will be former using stingy nomography
Figure carries out calculation process, the image after slightly being scratched with three components；
Step 3, essence are scratched.User can carry out local refine according to slightly stingy result, and a certain region is arranged to foreground zone
Domain, be arranged to background area or be arranged to again zone of ignorance carry out scratch figure update.
The present invention is a kind of easy-to-use manual stingy drawing system that can be used on a mobile platform, can solve mobile platform
Or mobile terminal screen is smaller, it is difficult to accurate to realize the problem of scratching figure function.Wherein, it provides a kind of non-on a mobile platform
Accurate stingy drawing method often convenient to use, user only need the profile of the rough object for being drawn with finger and needing to take in picture
Line can obtain more accurate taking result.If user is not satisfied enough to individual local details, can also be corresponding area
Domain amplifies, and the carry out essence for being accurate to pixel is scratched.
Compared with prior art, the present invention has the positive effect that:
(1) easy to use.User only needs with the rough profile for irising out object to be scratched of finger, and program can be automatically performed
Subsequent stingy figure work, has simplified the operating process of user significantly.
(2) figure precision height is scratched, arithmetic speed is fast.It, will be outside profile due to being irised out after the profile of stingy object in user
Region be considered as background area automatically, the region in profile is considered as foreground area automatically, the area on uncertain only contour line
Domain greatly reduces the pixel quantity of uncertain region, not only increases accuracy, decreases operand.
Detailed description of the invention
The following detailed description is read with reference to the accompanying drawings, above-mentioned and other mesh of exemplary embodiment of the invention
, feature and advantage will become prone to understand.In the accompanying drawings, if showing by way of example rather than limitation of the invention
Dry embodiment, in which:
Fig. 1 is stingy drawing method flow diagram one of according to embodiments of the present invention.
Fig. 2 is original image example one of according to embodiments of the present invention.
Fig. 3 is the example that overstriking contour line is drawn on original image one of according to embodiments of the present invention.
Fig. 4 is the line drawing according to Fig. 3.
Fig. 5 is the three component examples according to Fig. 3.
Fig. 6 is the alpha illustrated example according to Fig. 5.
Fig. 7 is that mobile phone essence one of according to embodiments of the present invention scratches interface schematic diagram.
Specific embodiment
According to one or more embodiment, a kind of stingy drawing method, for the picture processing unit with touch screen, the party
Method the following steps are included:
The picture processing unit obtains user's finger trace on touch screen, the original graph passed through according to user's finger
Panel region draws out the overstriking contour line of subject area to be scratched.It is original image as shown in Figure 2, Fig. 3 is drawn on original image
The overstriking contour line of subject area to be scratched is made, Fig. 4 is the line drawing generated according to Fig. 3.
According to overstriking contour line, three components are generated.Three components (Trimap) are the technical terms scratched in figure, and three components are by black
Three kinds of color compositions of lime, black represent background area, and white represents foreground area, and grey represents zone of ignorance to be asked.Such as Fig. 5
Shown in be three components from original image according to overstriking contour generating.
Original image and three components are subjected to calculation process using stingy nomography, the picture after obtaining figure stingy roughly.
The stingy nomography referred here to, one of which are that original image and three components are carried out calculation process, gray area is solved, obtains
Scheme to alpha.The white area of black region in three components in alpha figure or black (value of pixel is 0), in three components
Domain is in alpha figure or white (value of pixel is 255), and the gray area in three components transforms into Jie according to calculating
Value between 0 and 255.The value of these points in final alpha figure is to indicate the point of corresponding position in original image in generation
Transparence value in result figure.For example, the value of some in alpha figure is 128, this point is represented in original image in stingy figure result
In, it should it is that translucent form is presented.As shown in fig. 6, being the alpha figure obtained.
User carries out local fine modification according to the picture after rough stingy figure, and a certain region in picture is arranged to
Foreground area is arranged to background area or is arranged to zone of ignorance, obtains the image after essence is scratched.
Three components turn the zone of ignorance in three components in conjunction with the colouring information of original image image
Change, is divided into approximate prospect and approximate background, and the borderline region expansion processing of pairing approximation prospect and approximate background was
Cross region.
A certain region is provided directly as foreground area, background area or selection area by the mode selected according to user,
If a certain region that user selectes is selection area, which is converted.
During three components are converted to alpha figure, first calculate each pixel in gray area and (represent not
Know region) probability that belongs to foreground area (or background area), when this probability is greater than some preset value, just by the pixel
It is marked as foreground area (or background area).Gradually reduce gray area (zone of ignorance) in this way.Finally to remaining grey area
Nomography (such as Global Sampling Matting algorithm or Shared are scratched using existing certain in domain (zone of ignorance)
Matting algorithm etc.) carry out calculating alpha value.
To the alpha figure of generation, user can carry out refine according to the requirement of oneself again.Wanting to retain in original picture
Region, be arranged in alpha figure white (representing foreground area), the region that erasing is thought in original picture be arranged to black (generation
Table background area), the region of transition in original picture setting grey (represent user and poorly determine, allow algorithm go to determine be
Prospect or background) using existing certain scratch nomography (such as Global Sampling Matting algorithm or Shared
Matting algorithm etc.) it carries out scratching figure, allow stingy nomography the point of gray area (zone of ignorance) in corresponding aplha figure transfer
Chemical conversion black region (representing background) or white area (representing prospect) or the value between 0~255 (represent translucent areas
Domain), obtain the image after essence is scratched.As shown in fig. 7, being the schematic diagram that essence scratches operation image and interface, the button of bottom four is successively
For translation functions, paintbrush is set as regional function undetermined, by paintbrush be set as prospect function (after drawing, the region scratched
Can recover), paintbrush is set as background functions (after drawing, which can be wiped free of and scratch).
According to one or more embodiment, a kind of picture processing unit, the device has touch screen, memory；And
It is coupled to the processor of the memory, which is configured as executing the instruction of storage in the memory, the place
It manages device and executes following operation:
User's finger trace on touch screen is obtained, according to the original image region that user's finger is passed through, is drawn out wait scratch
The overstriking contour line of subject area；
According to overstriking contour line, three components are generated；
Original image and three components are subjected to calculation process using stingy nomography, the picture after obtaining figure stingy roughly.
User carries out local fine modification according to the picture after rough stingy figure, and a certain region in picture is arranged to
Foreground area, be arranged to background area or be arranged to zone of ignorance carry out scratch figure update.
According to one or more embodiment, a kind of picture processing platform, the platform includes the movement with touch screen
Terminal, server, mobile terminal and server couple, and server has memory；And
It is coupled to the processor of the memory, which is configured as executing the finger of storage in the memory
It enables, the processor executes following operation:
By acquisition for mobile terminal user on touch screen finger trace, according to user's finger pass through original graph section
The overstriking contour line of subject area to be scratched is drawn out in domain；
According to overstriking contour line, three components are generated；
Original image and three components are subjected to calculation process using stingy nomography, the picture after obtaining figure stingy roughly.
User carries out local fine modification according to the picture after rough stingy figure, and a certain region in picture is arranged to
Foreground area, be arranged to background area or be arranged to zone of ignorance carry out scratch figure update.
According to one or more embodiment, a kind of mobile terminal, the mobile terminal accessing mobile communication network, and should
Mobile terminal has touch screen, memory；And
It is coupled to the processor of the memory, which is configured as executing the finger of storage in the memory
It enables, the processor executes following operation:
User's finger trace on touch screen is obtained, according to the original image region that user's finger is passed through, is drawn out wait scratch
The overstriking contour line of subject area；
According to overstriking contour line, three components are generated；
Original image and three components are subjected to calculation process using stingy nomography, the picture after obtaining figure stingy roughly.
User carries out local fine modification according to the picture after rough stingy figure, and a certain region in picture is arranged to
Foreground area, be arranged to background area or be arranged to zone of ignorance carry out scratch figure update.
According to one or more embodiment, as shown in Figure 1, a kind of easy-to-use mobile platform scratches drawing system, packet manually
Include following steps:
Step 1: input.The finger manipulation for receiving user's input, by the operation of user in mobile terminal device screen interface
On provide feedback, by user's finger pass through region make overstriking processing, draw out the contour line of object to be scratched；Two fingers are supported simultaneously
Translation is scaled, allows user can be with the region of zoom figure to be scratched.By by the simple gesture operation of user be shown as to
The mode of object overstriking contour line is scratched, very easily provides foreground area, background area and region undetermined to scratch figure function:
It is background area outside overstriking contour line, be foreground area inside overstriking contour line, on overstriking contour line is region undetermined.
Step 2: thick to scratch.The overstriking contour line drawn is inputted according to user, generates three components.It will be former using stingy nomography
Figure carries out calculation process, the image after slightly being scratched with three components.Three components operated according to user gesture, in conjunction with original image
The colouring information of picture converts the zone of ignorance in three components, is divided into approximate prospect, approximate background.And to this
The borderline region of the two is suitably expanded, as transitional region.For the pixel of transitional region, its alpha value is calculated.
Step 3: essence is scratched.User can carry out local refine according to slightly stingy result, and a certain region is arranged to foreground zone
Domain, be arranged to background area or be arranged to again zone of ignorance carry out scratch figure update.The mode selected according to user, by a certain area
Domain is provided directly as foreground area, background area either selection area.If a certain region that user selectes is selection area,
The method for converting region undetermined in step 2 is then continued to use to be converted.And transition is done to borderline region.For transitional region
Pixel, its alpha value is calculated using algorithm.Step 3 can allow user's multi-pass operation, and iteration goes out optimal effectiveness.
It should be understood that in embodiments of the present invention, term "and/or" is only a kind of incidence relation for describing affiliated partner,
Indicate may exist three kinds of relationships.For example, A and/or B, can indicate: individualism A exists simultaneously A and B, individualism B this
Three kinds of situations.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware
With the interchangeability of software, each exemplary composition and step are generally described according to function in the above description.This
A little functions are implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Specially
Industry technical staff can use different methods to achieve the described function each specific application, but this realization is not
It is considered as beyond the scope of this invention.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.In addition, shown or beg for
Opinion mutual coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING of device or unit
Or communication connection, it is also possible to electricity, mechanical or other form connections.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the present invention
Portion or part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey
The medium of sequence code.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection scope subject to.
Claims (9)
1. a kind of stingy drawing method, for the picture processing unit with touch screen, which is characterized in that this method includes following step
It is rapid:
The picture processing unit obtains user's finger trace on touch screen, the original graph section passed through according to user's finger
The overstriking contour line of subject area to be scratched is drawn out in domain,
According to overstriking contour line, three components are generated,
Original image and three components are subjected to calculation process using stingy nomography, the picture after obtaining figure stingy roughly.
2. stingy drawing method according to claim 1, which is characterized in that further include:
User carries out local fine modification according to the picture after rough stingy figure, and a certain region in picture is arranged to prospect
Region, be arranged to background area or be arranged to zone of ignorance carry out scratch figure update.
3. stingy drawing method according to claim 1 or 2, which is characterized in that
Three components convert the zone of ignorance in three components in conjunction with the colouring information of original image image, it will
It is divided into approximate prospect and approximate background, and it is transition region that the borderline region of pairing approximation prospect and approximate background, which expands processing,
Domain.
4. stingy drawing method according to claim 3, it is characterised in that:
A certain region is provided directly as foreground area, background area or selection area by the mode selected according to user,
If a certain region that user selectes is selection area, which is converted.
5. a kind of picture processing unit, which has touch screen, memory；And
It is coupled to the processor of the memory, which is configured as executing the instruction of storage in the memory, institute
It states processor and executes following operation:
User's finger trace on touch screen is obtained, according to the original image region that user's finger is passed through, draws out object to be scratched
The overstriking contour line in region；
According to overstriking contour line, three components are generated；
Original image and three components are subjected to calculation process using stingy nomography, the picture after obtaining figure stingy roughly,
User carries out local fine modification according to the picture after rough stingy figure, and a certain region in picture is arranged to prospect
Region, be arranged to background area or be arranged to zone of ignorance carry out scratch figure.
6. a kind of picture processing platform, which is characterized in that the platform includes the mobile terminal with touch screen, server, is moved
Dynamic terminal and server couple, and server has memory；And
It is coupled to the processor of the memory, which is configured as executing the instruction of storage in the memory, institute
It states processor and executes following operation:
By acquisition for mobile terminal user, finger trace is drawn according to the original image region that user's finger is passed through on touch screen
Produce the overstriking contour line of subject area to be scratched；
According to overstriking contour line, three components are generated；
Original image and three components are subjected to calculation process using stingy nomography, the picture after obtaining figure stingy roughly.
User carries out local fine modification according to the picture after rough stingy figure, and a certain region in picture is arranged to prospect
Region, be arranged to background area or be arranged to zone of ignorance carry out scratch figure update.
7. a kind of mobile terminal, the mobile terminal accessing mobile communication network, and the mobile terminal have touch screen, storage
Device；And
It is coupled to the processor of the memory, which is configured as executing the instruction of storage in the memory, institute
It states processor and executes following operation:
User's finger trace on touch screen is obtained, according to the original image region that user's finger is passed through, draws out object to be scratched
The overstriking contour line in region；
According to overstriking contour line, three components are generated；
Original image and three components are subjected to calculation process using stingy nomography, the picture after obtaining figure stingy roughly.
User carries out local fine modification according to the picture after rough stingy figure, and a certain region in picture is arranged to prospect
Region, be arranged to background area or be arranged to zone of ignorance carry out scratch figure update.
8. a kind of mobile platform scratches drawing system manually, which includes:
The picture region that user's finger is passed through is made overstriking processing, drawn by input module for receiving the finger manipulation of user's input
Produce the contour line of object to be scratched；
Slightly stingy module inputs the overstriking contour line drawn according to user, generates three components, using stingy nomography by original image and three points
Figure carries out calculation process, the image after slightly being scratched；
The stingy module of essence, user carry out local refine according to slightly stingy result, a certain region are arranged to foreground area, is arranged to carry on the back
Scene area or be arranged to again zone of ignorance carry out scratch figure update.
9. a kind of storage medium, is stored thereon with computer program, which is characterized in that when the program is executed by processor, realize
Method as described in any in Claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910361707.8A CN110097560A (en) | 2019-04-30 | 2019-04-30 | Scratch drawing method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910361707.8A CN110097560A (en) | 2019-04-30 | 2019-04-30 | Scratch drawing method and device |
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| CN110097560A true CN110097560A (en) | 2019-08-06 |
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| CN201910361707.8A Pending CN110097560A (en) | 2019-04-30 | 2019-04-30 | Scratch drawing method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112712459A (en) * | 2019-10-24 | 2021-04-27 | 北京字节跳动网络技术有限公司 | Matting method and device |
| CN112831982A (en) * | 2019-11-22 | 2021-05-25 | 重庆海尔洗衣机有限公司 | Processing method, device and equipment for clothes color identification and storage medium |
| CN113327262A (en) * | 2020-02-28 | 2021-08-31 | 武汉金山办公软件有限公司 | Image processing method and device, computer storage medium and terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112712459A (en) * | 2019-10-24 | 2021-04-27 | 北京字节跳动网络技术有限公司 | Matting method and device |
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| CN112831982A (en) * | 2019-11-22 | 2021-05-25 | 重庆海尔洗衣机有限公司 | Processing method, device and equipment for clothes color identification and storage medium |
| CN113327262A (en) * | 2020-02-28 | 2021-08-31 | 武汉金山办公软件有限公司 | Image processing method and device, computer storage medium and terminal |
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