CN102752480A - Method for achieving sharpening special effects for image - Google Patents
Method for achieving sharpening special effects for image Download PDFInfo
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- CN102752480A CN102752480A CN2011103936895A CN201110393689A CN102752480A CN 102752480 A CN102752480 A CN 102752480A CN 2011103936895 A CN2011103936895 A CN 2011103936895A CN 201110393689 A CN201110393689 A CN 201110393689A CN 102752480 A CN102752480 A CN 102752480A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000000694 effects Effects 0.000 title claims abstract description 18
- 239000011159 matrix material Substances 0.000 claims abstract description 90
- 238000003707 image sharpening Methods 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 description 2
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Abstract
An embodiment of the invention discloses a method for achieving sharpening special effects for an image. The method includes obtaining an original image; presetting a sharpening matrix of the original image, wherein the sharpening matrix comprises a horizontal sharpening matrix and a longitudinal sharpening matrix; receiving a sharpening grade of the sharpened original image; and sharpening the original image based on the sharpening matrix and the sharpening grade and obtaining a target image. According to the method, clear effects of an image are achieved through a special sharpening process on the image.
Description
Technical field
The present invention relates to video and technical field of image processing, relate in particular to a kind of method that realizes the image sharpening special effects.
Background technology
A kind of colour coding method that the YUV color space is adopted by the eurovision system.Wherein Y representes lightness (Luminance or Luma), just GTG value; That U and V represent then is colourity (Chrominance or Chroma).Color TV adopts yuv space just in order to solve the compatibling problem of color television set and black and white television set with brightness signal Y, makes black and white television set also can receive colour TV signal.The characteristics of YUV color space are that brightness and chrominance separation are opened, thereby are suitable for image processing field.
Image is in transmission and transfer process; Quality all can reduce generally speaking, and except the factor that adds noise, what also can become is fuzzyyer; Cause the details and the profile of image unintelligible; Image sharpening is exactly details and the profile of strengthening in the image, strengthens the part of edge of image and Gray Level Jump, makes image become clear.
In realizing process of the present invention; The inventor finds that there is following technical problem in prior art: image carried out in the process of sharpening, sometimes can be not enough to the image sharpening degree, and cause DeGrain; The effect that can not get wanting; Sometimes can cause image section information dropout to the excessive sharpening of image, the sharpening effect that can not get wanting.
Summary of the invention
The embodiment of the invention provides a kind of method that realizes the image sharpening special effects, through the processing to the image sharpening stunt, to realize the effect of image sharpening.
In order to achieve the above object, the embodiment of the invention provides a kind of method that realizes the image sharpening special effects, may further comprise the steps:
Obtain original image;
The sharpening matrix of preset said original image, said sharpening matrix comprise horizontal sharpening matrix and vertical sharpening matrix;
The sharpening rank of sharpening is carried out in reception to said original image;
According to said sharpening matrix and said sharpening rank said original image is carried out sharpening, obtain target image.
Said reception also comprises before said original image is carried out the sharpening rank of sharpening:
Receive the sharpening zone that the user is provided with, said sharpening zone comprises coboundary, lower boundary, left margin and right margin.
Said obtaining after the original image also comprises:
If the color space of said original image is a rgb color space, then the color space with said original image converts the YUV color space into.
Saidly said original image is carried out sharpening, obtains target image, comprising according to said sharpening matrix and said sharpening rank:
Calculate the width and the height in said sharpening zone according to said sharpening zone;
According to said horizontal sharpening matrix processing is gone in said sharpening zone, generate the row of said target image;
According to said vertical sharpening matrix said sharpening zone is listed as processing, generates the row of said target image.
Saidly processing is gone in said sharpening zone, generates the row of said target image, specifically comprise according to said horizontal sharpening matrix:
Matrix according between said horizontal sharpening matrix computations current pixel point and former and later two pixels is poor, obtains the sharpening result of said current pixel point;
The matrix that obtains next pixel according to the matrix differential conversion formula of the matrix difference of said current matrix and neighbor pixel is poor;
Matrix according to said next pixel is poor, obtains the sharpening result of said next pixel.
Said horizontal sharpening matrix is specially:
R＝[-1，-2，...，-n，+(2*n+1+m)，-n，...-2，-1]；
Said vertical sharpening matrix is specially:
Wherein, n is the sharpening width, and m is the sharpening rank.
The embodiment of the invention is through obtaining original image; The sharpening matrix of preset said original image, said sharpening matrix comprise horizontal sharpening matrix and vertical sharpening matrix; The sharpening rank of sharpening is carried out in reception to said original image; According to said sharpening matrix and said sharpening rank said original image is carried out sharpening, obtain target image, realized image is carried out the processing of sharpening stunt, realize the sharpening effect of image.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of method flow diagram of realizing the image sharpening special effects in the embodiment of the invention;
Fig. 2 is a kind of method particular flow sheet of realizing the image sharpening special effects in the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The embodiment of the invention one discloses a kind of method that realizes the image sharpening special effects, and is as shown in Figure 1, may further comprise the steps:
Step S101 obtains original image.
Step S102, the sharpening matrix of preset said original image, said sharpening matrix comprise horizontal sharpening matrix and vertical sharpening matrix.
Step S103 receives the sharpening rank that said original image is carried out sharpening from the user.
Wherein, receive from the user said original image is carried out the sharpening rank of sharpening before, comprising:
Receive the sharpening zone that the user is provided with, said sharpening zone comprises coboundary, lower boundary, left margin and right margin.
Step S104 carries out sharpening according to said sharpening matrix and said sharpening rank to said original image, obtains target image.Specifically comprise:
Calculate the width and the height in said sharpening zone according to said sharpening zone;
According to said horizontal sharpening matrix processing is gone in said sharpening zone, generates the row of said target image, specifically comprise:
Matrix according between said horizontal sharpening matrix computations current pixel point and former and later two pixels is poor, obtains the sharpening result of said current pixel point;
The matrix that obtains next pixel according to the matrix differential conversion formula of the matrix difference of said current matrix and neighbor pixel is poor;
Matrix according to said next pixel is poor, obtains the sharpening result of said next pixel.
According to said vertical sharpening matrix said sharpening zone is listed as processing, generates the row of said target image, specifically comprise:
Vertically sharpening is with unit of a behavior, and the capable result of n calculates the sharpening result of current line before and after utilizing.
Said horizontal sharpening matrix is specially:
R＝[-1，-2，...，-n，+(2*n+1+m)，-n，...-2，-1]
Said vertical sharpening matrix is specially:
Wherein, n is the sharpening width, and m is the sharpening rank.
The beneficial effect that the technical scheme of the embodiment of the invention is brought is following: through obtaining original image; The sharpening matrix of preset said original image, said sharpening matrix comprise horizontal sharpening matrix and vertical sharpening matrix; The sharpening rank of sharpening is carried out in reception to said original image; According to said sharpening matrix and said sharpening rank said original image is carried out sharpening, obtain target image, realized image is carried out the processing of sharpening stunt, realize the sharpening effect of image.
The embodiment of the invention two discloses a kind of method that realizes the image sharpening special effects, and is as shown in Figure 2, may further comprise the steps:
Step S201 obtains original image.
Step S202, the color space of said original image are rgb color space, convert the color space of said original image into the YUV color space,
Rgb color space changes the YUV color space shown in formula 1,2 and 3:
Y＝0.299*R+0.587*G+0.114*B (1)
U＝-0.168*R-0.33*G+0.498*B+128 (2)
V＝0.501*R-0.42*G-0.081*B+128 (3)
Step S203, the sharpening matrix of preset said original image, said sharpening matrix comprise horizontal sharpening matrix and vertical sharpening matrix.
Step S204 receives the sharpening rank that said original image is carried out sharpening from the user;
Generally, the sharpening rank is carried out limit value, scope is [0,2].
Wherein, receive from the user said original image is carried out the sharpening rank of sharpening before, comprising:
Receive the sharpening zone that the user is provided with, said sharpening zone comprises coboundary, lower boundary, left margin and right margin.
Step S205 carries out sharpening according to said sharpening matrix and said sharpening rank to said original image, obtains target image.Specifically comprise:
Calculate the width and the height in said sharpening zone according to said sharpening zone.
According to said horizontal sharpening matrix processing is gone in said sharpening zone, generates the row of said target image, specifically comprise:
Matrix according between said horizontal sharpening matrix computations current pixel point and former and later two pixels is poor, obtains the sharpening result of said current pixel point;
The matrix that obtains next pixel according to the matrix differential conversion formula of the matrix difference of said current matrix and neighbor pixel is poor;
Matrix according to said next pixel is poor, obtains the sharpening result of said next pixel.
According to said vertical sharpening matrix said sharpening zone is listed as processing, generates the row of said target image.
Said horizontal sharpening matrix, shown in formula 4:
R＝[-1，-2，...，-n，+(2*n+1+m)，-n，...-2，-1] (4)
The matrix of former and later two pixels is poor, shown in formula 5:
[1，1，...，1，-(2*n+1+n+m)，+(2*n+1+n+m)，-1，...-1，-1] (5)
Calculating finishes after the horizontal sharpening result of a pixel, and the matrix that calculates itself and next pixel is poor
Said vertical sharpening matrix, shown in formula 6:
Wherein, n is the sharpening width, and m is the sharpening rank.
It should be noted that sharpening width n when laterally sharpening is calculated, calculate by the width of the image of want sharpening; When vertically sharpening is calculated, obtain by the high computational of the image of want sharpening.
The beneficial effect that the technical scheme of the embodiment of the invention is brought is following: through obtaining original image; The sharpening matrix of preset said original image, said sharpening matrix comprise horizontal sharpening matrix and vertical sharpening matrix; The sharpening rank of sharpening is carried out in reception to said original image; According to said sharpening matrix and said sharpening rank said original image is carried out sharpening, obtain target image, realized image is carried out the processing of sharpening stunt, realize the sharpening effect of image.
Through the description of above execution mode, those skilled in the art can be well understood to the present invention and can realize through hardware, also can realize by the mode that software adds necessary general hardware platform; Based on such understanding; Technical scheme of the present invention can be come out with the embodied of software product, this software product can be stored in a non-volatile memory medium (can be CD-ROM, USB flash disk; Portable hard drive etc.) in; Comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
In a word, the above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a method that realizes the image sharpening special effects is characterized in that, may further comprise the steps:
Obtain original image;
The sharpening matrix of preset said original image, said sharpening matrix comprise horizontal sharpening matrix and vertical sharpening matrix;
The sharpening rank of sharpening is carried out in reception to said original image;
According to said sharpening matrix and said sharpening rank said original image is carried out sharpening, obtain target image.
2. method according to claim 1 is characterized in that said reception also comprises before said original image is carried out the sharpening rank of sharpening:
Receive the sharpening zone that the user is provided with, said sharpening zone comprises coboundary, lower boundary, left margin and right margin.
3. method according to claim 1 is characterized in that said obtaining after the original image also comprises:
If the color space of said original image is a rgb color space, then the color space with said original image converts the YUV color space into.
4. method according to claim 1 or claim 2 is characterized in that, saidly according to said sharpening matrix and said sharpening rank said original image is carried out sharpening, obtains target image, comprising:
Calculate the width and the height in said sharpening zone according to said sharpening zone;
According to said horizontal sharpening matrix processing is gone in said sharpening zone, generate the row of said target image;
According to said vertical sharpening matrix said sharpening zone is listed as processing, generates the row of said target image.
5. method according to claim 1 is characterized in that, saidly according to said horizontal sharpening matrix processing is gone in said sharpening zone, generates the row of said target image, specifically comprises:
Matrix according between said horizontal sharpening matrix computations current pixel point and former and later two pixels is poor, obtains the sharpening result of said current pixel point;
The matrix that obtains next pixel according to the matrix differential conversion formula of the matrix difference of said current matrix and neighbor pixel is poor;
Matrix according to said next pixel is poor, obtains the sharpening result of said next pixel.
6. method according to claim 1 is characterized in that said horizontal sharpening matrix is specially:
R＝[-1，-2，…，-n，+(2*n+1+m)，-n，…-2，-1]；
Said vertical sharpening matrix is specially:
Wherein, n is the sharpening width, and m is the sharpening rank.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111010525A (en) * | 2018-10-08 | 2020-04-14 | 宏碁股份有限公司 | Method for dynamically adjusting image definition and image processing device thereof |
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| CN101502097A (en) * | 2006-08-07 | 2009-08-05 | 高通股份有限公司 | Adaptive spatial image filter for filtering image information |
| WO2009110328A1 (en) * | 2008-03-03 | 2009-09-11 | 三菱電機株式会社 | Image processing device and method, and image display device and method |
| CN102137221A (en) * | 2010-01-22 | 2011-07-27 | 富士通微电子(上海)有限公司 | Method and system for sharpening digital video image |
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| CN101502097A (en) * | 2006-08-07 | 2009-08-05 | 高通股份有限公司 | Adaptive spatial image filter for filtering image information |
| CN101394459A (en) * | 2007-09-17 | 2009-03-25 | 硕颉科技股份有限公司 | Adaptive image processing device and method thereof |
| WO2009110328A1 (en) * | 2008-03-03 | 2009-09-11 | 三菱電機株式会社 | Image processing device and method, and image display device and method |
| CN102137221A (en) * | 2010-01-22 | 2011-07-27 | 富士通微电子(上海)有限公司 | Method and system for sharpening digital video image |
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| CN111010525A (en) * | 2018-10-08 | 2020-04-14 | 宏碁股份有限公司 | Method for dynamically adjusting image definition and image processing device thereof |
| CN111010525B (en) * | 2018-10-08 | 2021-04-06 | 宏碁股份有限公司 | Method for dynamically adjusting image sharpness and image processing device thereof |
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Application publication date: 20121024 |