CN105139342A - Method and device for zooming pictures - Google Patents
Method and device for zooming pictures Download PDFInfo
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- CN105139342A CN105139342A CN201510629880.3A CN201510629880A CN105139342A CN 105139342 A CN105139342 A CN 105139342A CN 201510629880 A CN201510629880 A CN 201510629880A CN 105139342 A CN105139342 A CN 105139342A
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Abstract
The invention discloses a method and a device for zooming pictures, wherein the method and the device are used for improving the quality of pictures after being zoomed. The method comprises the steps of extracting the main body of a to-be-zoomed picture on the condition that the to-be-zoomed picture is a simple picture and the main body and the background of the to-be-zoomed picture are divisible, dividing the to-be-zoomed picture into a first background picture and at least one first main body picture, zooming each first main body picture in an equal proportion to form a corresponding second main body picture, zooming the first background picture to form a second background picture, and forming a zoomed picture by utilizing the zoomed second background picture and each second main body picture. In this way, the main body picture can be individually zoomed in an equal proportion, so that the main body in the picture is prevented from getting deformed. The quality of the picture after being zoomed is improved.
Description
Technical field
The present invention relates to technical field of image processing, particularly a kind of method and apparatus of image zooming.
Background technology
When user utilizes intelligent terminal to browse, may need to carry out convergent-divergent to the content browsed, so that can clear or browsing content all sidedly.
At present, generally overall convergent-divergent can be carried out needing the browsing content of convergent-divergent as a picture.Specifically comprise: double-click any point needing on the picture of convergent-divergent, then with the center of this picture for starting point carries out the overall convergent-divergent of picture, or towing needs the border of the picture of convergent-divergent, with central point or frontier point for starting point carries out the overall convergent-divergent of picture.
Visible, no matter specifically which kind of mode is all a picture is that entirety carries out convergent-divergent.When picture there being word, after this convergent-divergent process, the ratio regular meeting of word becomes very inharmonious, even there will be the unclear situation of word after convergent-divergent, greatly have impact on the effect of image zooming.
Summary of the invention
The invention provides a kind of method and apparatus of image zooming, in order to improve the picture quality after image zooming.
The invention provides a kind of method of image zooming, the method comprises:
When until scaling pictures being the alienable simple picture of main body and background, treating the main body of scaling pictures described in extraction, treating that scaling pictures is divided into the first background picture and at least one the first main body picture by described;
Carrying out often opening the first main body picture the second main body picture that equal proportion convergent-divergent forms correspondence, described first background picture being carried out convergent-divergent and forms the second background picture;
By described second background picture after convergent-divergent and described often open second main body picture composition convergent-divergent after picture.
In one embodiment of the invention, before treating the main body of scaling pictures described in described extraction, also comprise:
According to the described color range treating scaling pictures, described in judgement, treat whether scaling pictures is simple picture.
In one embodiment of the invention, described in described extraction, treat that the main body of scaling pictures comprises:
In the edge of described main body, search at least four pixels, wherein, the color value of described each pixel and the color value of described background closest;
With described at least four pixels for frontier point, extract described main body scaling pictures from described treating.
In one embodiment of the invention, describedly treat that scaling pictures is divided into the first background picture and at least one the first main body picture to comprise by described:
When described main body is word, by row described word is cut into slices, the word of often composing a piece of writing after section is defined as the first corresponding main body picture, or, according to color range, described word is cut into slices, by section after be defined as the first corresponding main body picture with the word of same color range;
Described first background picture is defined as until the scaling pictures picture extracted after described main body by described.
In one embodiment of the invention, described by described second background picture after convergent-divergent and described often open second main body picture composition convergent-divergent after picture comprise:
Described second main body picture of often opening is placed on correspondence position on described second background picture, forms picture after described convergent-divergent;
When picture after described convergent-divergent has blank space, the second background picture described in convergent-divergent, until after described convergent-divergent picture without blank space.
The invention provides a kind of device of image zooming, this device comprises:
Extract cutting unit, for when until scaling pictures being the alienable simple picture of main body and background, treating the main body of scaling pictures described in extraction, treating that scaling pictures is divided into the first background picture and at least one the first main body picture by described;
Unit for scaling, for carrying out often opening the first main body picture the second main body picture that equal proportion convergent-divergent forms correspondence, carrying out convergent-divergent by described first background picture and forming the second background picture;
Merge cells, for by described second background picture after convergent-divergent and described often open second main body picture composition convergent-divergent after picture.
In one embodiment of the invention, described device also comprises:
Determining unit, for treating the color range of scaling pictures described in basis, treats described in judgement whether scaling pictures is simple picture.
In one embodiment of the invention, described extraction cutting unit, specifically for searching at least four pixels in the edge of described main body, with described at least four pixels for frontier point, described main body is extracted scaling pictures from described treating, wherein, the color value of described each pixel and the color value of described background closest.
In one embodiment of the invention, described extraction cutting unit, specifically for when described main body is word, by row described word is cut into slices, the word of often composing a piece of writing after section is defined as the first corresponding main body picture, or, according to color range, described word is cut into slices, the first corresponding main body picture will be defined as with the word of same color range after section, and be defined as described first background picture by described until the scaling pictures picture extracted after described main body.
In one embodiment of the invention, described merge cells, specifically for described second main body picture of often opening is placed on correspondence position on described second background picture, form picture after described convergent-divergent, and when picture after described convergent-divergent has blank space, second background picture described in convergent-divergent, until after described convergent-divergent picture without blank space.
Some beneficial effects of the embodiment of the present invention can comprise:
The main body of picture is extracted, after forming corresponding background picture and main body picture, carry out convergent-divergent respectively, equal proportion convergent-divergent can be carried out separately like this to main body picture, bulk deformation in picture can not be made, more can or can not cause the unclear of main body in picture, thus the picture quality after image zooming can not be affected, improve the picture quality after image zooming and display effect.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from instructions, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write instructions, claims and accompanying drawing and obtain.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for instructions, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the process flow diagram of image zooming in the embodiment of the present invention one;
Fig. 2 is the process flow diagram of image zooming in the embodiment of the present invention two;
Fig. 3 is the process flow diagram of image zooming in the embodiment of the present invention three;
Fig. 4 is the structural drawing of the device of image zooming in the embodiment of the present invention four.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Embodiment one, the present embodiment for be simple picture, in this simple picture, main body and background can be split.Such as: the picture that color background and word are formed, the picture that color background and polychrome regular shape are formed, or, picture that the patterned background of rule and word are formed etc.In the present embodiment, the process of image zooming as shown in Figure 1, comprising:
Step 101: when until scaling pictures being the alienable simple picture of main body and background, extracts the main body treating scaling pictures, will treat that scaling pictures is divided into the first background picture and at least one the first main body picture.
Treat that scaling pictures is the alienable simple picture of main body and background, so from treating to extract main body scaling pictures.Such as: in the simple picture that color background and word are formed, word is main body, and other are background.
Can according to the selection of user, from treating to extract main body scaling pictures.Such as: the main body treated in scaling pictures is chosen by user, like this, user provides the indication information of main body, then according to the indication information received, can extract the main body treating scaling pictures.
Or, the color value treating each pixel in scaling pictures can be detected, in simple picture, the color value of body rim pixel and the color value of background comparatively close, using wherein color value immediate four, five or the multiple some frontier point as main body, thus can from treating to extract main body scaling pictures.Specifically can comprise: in the edge of main body, search at least four pixels, wherein, the color value of each pixel and the color value of background closest, with at least four pixels for frontier point, from treating to extract main body scaling pictures.
After extracting main body, main body can be carried out segmentation formation one, two or multiple main body pictures, be the first main body picture here.Such as: when main body is word, by row word is cut into slices, the word of often composing a piece of writing after section is defined as the first corresponding main body picture, or, according to color range, word is cut into slices, by section after be defined as the first corresponding main body picture with the word of same color range.
Certainly, also according to the selection indication information of user, main body can be split, form one, two or multiple first main body pictures.
And the picture after extracting main body in scaling pictures is generally defined as the first background picture.
Step 102: carrying out often opening the first main body picture the second main body picture that equal proportion convergent-divergent forms correspondence, the first background picture being carried out convergent-divergent and forms the second background picture.
In the embodiment of the present invention, the picture that main body is formed can be carried out equal proportion convergent-divergent, thus the distortion of main body picture or unclear can not be caused.Therefore, here, carry out often opening the first main body picture the second main body picture that equal proportion convergent-divergent forms correspondence.And the first background picture is carried out convergent-divergent formed the second background picture process can prior art the same, such as: towing needs the border of the first background picture of convergent-divergent, with central point or frontier point for starting point carries out the overall convergent-divergent of picture.Certainly, the first background picture can be carried out equal proportion convergent-divergent.
Step 103: by the second background picture after convergent-divergent and often open second main body picture composition convergent-divergent after picture.
Often can open the second main body picture and be placed on correspondence position on the second background picture, picture after composition convergent-divergent; But due to different to the convergent-divergent process of the first main body picture and the first background picture, therefore, after convergent-divergent may there is blank space in picture, now, if the first background picture is color background picture, directly can fill color corresponding to background picture, until after convergent-divergent picture without blank space.If when the first background picture is pattern, scalable second background picture, until after convergent-divergent picture without blank space.And during convergent-divergent the second Background, convergent-divergent can be carried out according to ratio during the first main body image zooming.
In the embodiment of the present invention, the main body of picture is extracted, after forming corresponding background picture and main body picture, carry out convergent-divergent respectively, equal proportion convergent-divergent can be carried out to main body picture separately like this, bulk deformation in picture can not be made, more can or can not cause the unclear of main body in picture, thus the picture quality that can not affect after image zooming, improve the picture quality after image zooming and display effect.
Certainly, in one embodiment of the invention, need before treating the main body of scaling pictures, judge to treat scaling pictures whether body and the alienable simple picture of background, can, according to user instruction, directly determine to treat whether scaling pictures is simple picture, certainly, the color range treating scaling pictures can also be detected, according to the color range treating scaling pictures, judge to treat whether scaling pictures is simple picture.Generally, color range changes fairly simple rule, or to continuous grade of color range change at center, the edge of picture all can determine that picture is simple picture.Such as: the picture that simple background and word are formed, or, Five-Starred Red Flag (the national flag of the People's Republic of China) picture, or French flag picture etc. is all simple picture.
Embodiment two, in the present embodiment, treats that scaling pictures is the simple picture that color background and word are formed.See Fig. 2, in the present embodiment, the process of image zooming comprises:
Step 201: judge to treat that scaling pictures is simple picture? if so, perform step 202, otherwise flow process terminates.
Technical scheme in the present embodiment is only directed to simple picture, and therefore, if treat, scaling pictures is that simple picture performs step 202, otherwise flow process terminates.
Step 202: extract the main body treating scaling pictures, will treat that scaling pictures is divided into the first background picture and at least one the first main body picture.
Owing to treating that scaling pictures is the simple picture that color background and word are formed, therefore, the main body treating scaling pictures can be extracted.Four or multiple pixel can be searched in the edge of main body, wherein, the color value of each pixel and the color value of background closest, with the pixel found for frontier point, from treating to extract main body scaling pictures.
After extracting main body, main body can be carried out segmentation formation one, two or multiple first main body pictures.Because main body is word, therefore, can cut into slices to word by row, the word of often composing a piece of writing after section is defined as the first corresponding main body picture.
Step 203: carrying out often opening the first main body picture the second main body picture that equal proportion convergent-divergent forms correspondence, the first background picture being carried out convergent-divergent and forms the second background picture.
First main body picture is formed after word section by row, and therefore, carrying out equal proportion convergent-divergent, being often opening the first main body picture and carrying out equal proportion convergent-divergent to word by row, the word scaling often in row is the same, like this, word can not be caused to be out of shape.
Pull the edge of the first background picture, convergent-divergent is carried out to the first background picture, form the second background picture.
Step 204: by the second background picture after convergent-divergent and often open second main body picture composition convergent-divergent after picture.
Can first combine often opening the second main body picture, wherein, during its equal proportion convergent-divergent, less being as the criterion is combined, and then, the picture after combination is put into the correspondence position on the second background picture, picture after composition convergent-divergent.Now, if blank space has appearred in picture after convergent-divergent, directly the color corresponding with the second background picture has been filled.
In visible enforcement, after Word Input, directly equal proportion convergent-divergent is carried out to word, then the picture after convergent-divergent is formed with the color background after corresponding convergent-divergent, like this, can not the distortion of word be caused due to image zooming process or show unclear, improve the picture quality after graphics process and display effect.
Embodiment three, in the present embodiment, treats that scaling pictures is the simple picture that patterned background and regular patterns are formed.See Fig. 3, in the present embodiment, the process of image zooming comprises:
Step 301: judge to treat that scaling pictures is simple picture? if so, perform step 302, otherwise flow process terminates.
Equally, the technical scheme in the present embodiment is only directed to simple picture, and therefore, if treat, scaling pictures is that simple picture performs step 302, otherwise flow process terminates.
Step 302: extract the main body treating scaling pictures, will treat that scaling pictures is divided into the first background picture and at least one the first main body picture.
Owing to treating that scaling pictures is the simple picture that patterned background and regular patterns are formed, be to extract the main body in this picture.Here, the indication information can chosen according to user, extracts the main body treating scaling pictures.Such as: user chooses regular patterns and is designated as main information, then after receiving this information, determine that selected regular patterns is main body, the size according to check boxes extracts main body.
After extracting main body, main body can be split, form one, two or multiple first main body pictures.Here, according to color range, the main body extracted can be cut into slices, by section after be defined as the first corresponding main body picture with the region of same color range.
Step 303: carrying out often opening the first main body picture the second main body picture that equal proportion convergent-divergent forms correspondence, the first background picture being carried out convergent-divergent and forms the second background picture.
First main body picture is formed after cutting into slices to main body by color range, therefore, carrying out equal proportion convergent-divergent by often opening the first main body picture, being, by color range, equal proportion convergent-divergent being carried out to main body, with color range image zooming ratio always, should not cause distortion or the distortion of main body.
Overall convergent-divergent is carried out to the first background picture, forms the second background picture.
Step 304: by the second background picture after convergent-divergent and often open second main body picture composition convergent-divergent after picture.
Can first combine often opening the second main body picture equally, wherein, during its equal proportion convergent-divergent, less being as the criterion is combined, and then, the picture after combination is put into the correspondence position on the second background picture, picture after composition convergent-divergent.Or, directly put into correspondence position on the second background picture by often opening the second main body picture, picture after composition convergent-divergent.Now, if blank space has appearred in picture after convergent-divergent, needed convergent-divergent second background picture, until after convergent-divergent picture without blank space.And the ratio of convergent-divergent can be consistent with the ratio of convergent-divergent main body.
In visible enforcement, after main body is extracted, directly equal proportion convergent-divergent is carried out to main body, then the picture after convergent-divergent is formed with the patterned background after corresponding convergent-divergent, like this, can not the distortion of main body be caused due to image zooming process or show unclear, improve the picture quality after image zooming and display effect.
Embodiment four, according to the process of above-mentioned image zooming, can build a kind of device of image zooming, and as shown in Figure 4, this device comprises: comprising: extract cutting unit 410, unit for scaling 420 and merge cells 430, wherein,
Extract cutting unit 410, be connected with unit for scaling 420, for when until scaling pictures being the alienable simple picture of main body and background, the main body of scaling pictures is treated in extraction, will treat that scaling pictures is divided into the first background picture and at least one the first main body picture.
Unit for scaling 420, is connected with extraction cutting unit 410 and merge cells 430 respectively, for carrying out often opening the first main body picture the second main body picture that equal proportion convergent-divergent forms correspondence, the first background picture being carried out convergent-divergent and forms the second background picture.
Merge cells 430, for by the second background picture after convergent-divergent and often open second main body picture composition convergent-divergent after picture.
In one embodiment of the invention, this device also comprises:
Determining unit, for according to the color range treating scaling pictures, judges to treat whether scaling pictures is simple picture.
In one embodiment of the invention, extract cutting unit 410, specifically for searching at least four pixels in the edge of main body, with at least four pixels for frontier point, from treating to extract main body scaling pictures, wherein, the color value of each pixel and the color value of background closest.
In one embodiment of the invention, extract cutting unit 410, specifically for when main body is word, by row word is cut into slices, the word of often composing a piece of writing after section is defined as the first corresponding main body picture, or, according to color range, word is cut into slices, the first corresponding main body picture will be defined as with the word of same color range after section, and be defined as the first background picture by extracting the picture after main body until scaling pictures.
In one embodiment of the invention, merge cells 430, specifically for being placed on correspondence position on the second background picture by often opening the second main body picture, picture after composition convergent-divergent, and when picture after convergent-divergent has blank space, convergent-divergent second background picture, until after convergent-divergent picture without blank space.
Visible, in the embodiment of the present invention, the main body of picture is extracted by the device of image zooming, after forming corresponding background picture and main body picture, carry out convergent-divergent respectively, equal proportion convergent-divergent can be carried out to main body picture separately like this, bulk deformation in picture can not be made, more can or can not cause the unclear of main body in picture, thus the picture quality that can not affect after image zooming, improve the picture quality after image zooming and display effect.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disk memory and optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the process flow diagram of the method for the embodiment of the present invention, equipment (system) and computer program and/or block scheme.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or square frame.These computer program instructions can being provided to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computing machine or other programmable data processing device produce device for realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be loaded in computing machine or other programmable data processing device, make on computing machine or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computing machine or other programmable devices is provided for the step realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a method for image zooming, is characterized in that, comprising:
When until scaling pictures being the alienable simple picture of main body and background, treating the main body of scaling pictures described in extraction, treating that scaling pictures is divided into the first background picture and at least one the first main body picture by described;
Carrying out often opening the first main body picture the second main body picture that equal proportion convergent-divergent forms correspondence, described first background picture being carried out convergent-divergent and forms the second background picture;
By described second background picture after convergent-divergent and described often open second main body picture composition convergent-divergent after picture.
2. the method for claim 1, is characterized in that, before treating the main body of scaling pictures, also comprises described in described extraction:
According to the described color range treating scaling pictures, described in judgement, treat whether scaling pictures is simple picture.
3. method as claimed in claim 1 or 2, is characterized in that, treat that the main body of scaling pictures comprises described in described extraction:
In the edge of described main body, search at least four pixels, wherein, the color value of described each pixel and the color value of described background closest;
With described at least four pixels for frontier point, extract described main body scaling pictures from described treating.
4. the method for claim 1, is characterized in that, describedly treats that scaling pictures is divided into the first background picture and at least one the first main body picture to comprise by described:
When described main body is word, by row described word is cut into slices, the word of often composing a piece of writing after section is defined as the first corresponding main body picture, or, according to color range, described word is cut into slices, by section after be defined as the first corresponding main body picture with the word of same color range;
Described first background picture is defined as until the scaling pictures picture extracted after described main body by described.
5. the method for claim 1, is characterized in that, described by described second background picture after convergent-divergent and described often open second main body picture composition convergent-divergent after picture comprise:
Described second main body picture of often opening is placed on correspondence position on described second background picture, forms picture after described convergent-divergent;
When picture after described convergent-divergent has blank space, the second background picture described in convergent-divergent, until after described convergent-divergent picture without blank space.
6. a device for image zooming, is characterized in that, comprising:
Extract cutting unit, for when until scaling pictures being the alienable simple picture of main body and background, treating the main body of scaling pictures described in extraction, treating that scaling pictures is divided into the first background picture and at least one the first main body picture by described;
Unit for scaling, for carrying out often opening the first main body picture the second main body picture that equal proportion convergent-divergent forms correspondence, carrying out convergent-divergent by described first background picture and forming the second background picture;
Merge cells, for by described second background picture after convergent-divergent and described often open second main body picture composition convergent-divergent after picture.
7. device as claimed in claim 6, is characterized in that, also comprise:
Determining unit, for treating the color range of scaling pictures described in basis, treats described in judgement whether scaling pictures is simple picture.
8. device as claimed in claims 6 or 7, is characterized in that,
Described extraction cutting unit, specifically for searching at least four pixels in the edge of described main body, with described at least four pixels for frontier point, extract described main body scaling pictures from described treating, wherein, the color value of described each pixel and the color value of described background closest.
9. device as claimed in claim 6, is characterized in that,
Described extraction cutting unit, specifically for when described main body is word, by row described word is cut into slices, word of often composing a piece of writing after section is defined as the first corresponding main body picture, or, according to color range, described word is cut into slices, the first corresponding main body picture will be defined as with the word of same color range after section, and be defined as described first background picture by described until the scaling pictures picture extracted after described main body.
10. device as claimed in claim 6, is characterized in that,
Described merge cells, specifically for described second main body picture of often opening is placed on correspondence position on described second background picture, form picture after described convergent-divergent, and when picture after described convergent-divergent has blank space, second background picture described in convergent-divergent, until after described convergent-divergent picture without blank space.
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| CN106406702B (en) * | 2016-09-19 | 2019-09-13 | 天脉聚源(北京)传媒科技有限公司 | A kind of image display method and device |
| CN108573515A (en) * | 2017-03-10 | 2018-09-25 | 阿里巴巴集团控股有限公司 | A kind of conjunction drawing generating method and device close figure template generation method and device |
| CN108573515B (en) * | 2017-03-10 | 2022-03-01 | 阿里巴巴集团控股有限公司 | Method and device for generating combined graph and method and device for generating combined graph template |
| CN109886210A (en) * | 2019-02-25 | 2019-06-14 | 百度在线网络技术（北京）有限公司 | A kind of traffic image recognition methods, device, computer equipment and medium |
| CN112839161A (en) * | 2019-11-22 | 2021-05-25 | 北京小米移动软件有限公司 | Shooting method and device |
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