US20170169547A1 - Color image processing system and color image processing method - Google Patents
Color image processing system and color image processing method Download PDFInfo
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- US20170169547A1 US20170169547A1 US14/976,088 US201514976088A US2017169547A1 US 20170169547 A1 US20170169547 A1 US 20170169547A1 US 201514976088 A US201514976088 A US 201514976088A US 2017169547 A1 US2017169547 A1 US 2017169547A1
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- 238000003672 processing method Methods 0.000 title claims abstract description 7
- 230000001174 ascending effect Effects 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Classifications
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/46—Colour picture communication systems
- H04N1/64—Systems for the transmission or the storage of the colour picture signal; Details therefor, e.g. coding or decoding means therefor
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/0007—Image acquisition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/46—Colour picture communication systems
- H04N1/64—Systems for the transmission or the storage of the colour picture signal; Details therefor, e.g. coding or decoding means therefor
- H04N1/644—Systems for the transmission or the storage of the colour picture signal; Details therefor, e.g. coding or decoding means therefor using a reduced set of representative colours, e.g. each representing a particular range in a colour space
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10024—Color image
Definitions
- the subject matter herein relates to a color image processing system and a color image processing method.
- Color images are digitized before displayed on a displayer. Because different sensitivity of color channel, light factor and so on, the color image may be distorted.
- FIG. 1 is a block diagram of a color image processing system, according to an exemplary embodiment.
- FIG. 2 is a flowchart of a color image processing method, according to an exemplary embodiment.
- FIG. 1 illustrates a color image processing system 100 according to an exemplary embodiment.
- the color image processing system 100 includes an image capture module 20 , an image digitizing module 30 , an optimizing ratio calculation module 40 and an image processing module 50 .
- the image capture module 20 is configured to capture an original color image.
- the image digitizing module 30 is configured to digitize the original color image to obtain N pixels in ascending order according to value of RGB of the pixel.
- S 1 , S 2 and S 3 are ratios of areas of red color, green color and blue color from ⁇ 3 ⁇ in their own gaussian distribution.
- H 1 , H 2 and H 3 are ratios of areas of red color, green color and blue color to a total area of the red color, green color and blue color.
- the image processing module 50 is configure to multiply original value of RGB of the pixel before the ((N ⁇ N*H)/2)th pixel by 1/H to obtain new value of RGB of the pixel before the ((N ⁇ N*H)/2)th pixel and multiply original value of RGB of the pixel after the ((N+N*H)/2 ⁇ 1)th pixel by H to obtain new value of RGB of the pixel after the ((N+N*H)/2 ⁇ 1)th pixel.
- (N ⁇ N*H)/2 and (N+N*H)/2 ⁇ 1 are rounded to nearest integer.
- C is original value of the pixel from the ((N ⁇ N*H)/2)th pixel to the ((N+N*H)/2 ⁇ 1)th.
- V min is the minimum value of the original value of RGB of N pixels.
- V max is the minimum value of the original value of RGB of N pixels.
- V (N ⁇ N*H)/2 is the value of the original value of RGB of ((N ⁇ N*H)/2)th pixel.
- V (N+N*H)/2 ⁇ 1 is the value of the original value of RGB of ((N+N*H)/2 ⁇ 1)th pixel.
- FIG. 2 illustrates a flowchart of a color image processing method according to an exemplary embodiment.
- the illustrated order of blocks in FIG. 2 is illustrative only and the order of the blocks can change. Additional blocks can be added or fewer blocks may be utilized without departing from this disclosure.
- the example method can begin at block 202 .
- the image capture module 20 captures an original color image.
- the image digitizing module 30 digitizes the original color image to obtain N pixels in ascending order according to value of RGB of the pixel.
- the image processing module 50 multiplies original value of RGB of the pixel before the ((N ⁇ N*H)/2)th pixel by 1/H to obtain new value of RGB of the pixel before the ((N ⁇ N*H)/2)th pixel and multiplies original value of RGB of the pixel after the ((N+N*H)/2 ⁇ 1)th pixel by H to obtain new value of RGB of the pixel after the ((N+N*H)/2 ⁇ 1)th pixel, wherein (N ⁇ N*H)/2 and (N+N*H)/2 ⁇ 1 are rounded to nearest integer.
- V max is the minimum value of the original value of RGB of N pixels
- V (N ⁇ N*H)/2 is the value of the original value of RGB of ((N ⁇ N*H)/2)th pixel
- V (N+N*H)/2 ⁇ 1 is the value of the original value of RGB of ((N+N*H)/2 ⁇ 1)th pixel.
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- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Image Processing (AREA)
- Color Image Communication Systems (AREA)
- Facsimile Image Signal Circuits (AREA)
Abstract
Description
- This application claims priority to Chinese Patent Application No. 201510920555.2, filed on Dec. 14, 2015, the contents of which are incorporated by reference herein.
- The subject matter herein relates to a color image processing system and a color image processing method.
- Color images are digitized before displayed on a displayer. Because different sensitivity of color channel, light factor and so on, the color image may be distorted.
- Implementations of the present technology will now be described, by way of example only, with reference to the attached figures.
-
FIG. 1 is a block diagram of a color image processing system, according to an exemplary embodiment. -
FIG. 2 is a flowchart of a color image processing method, according to an exemplary embodiment. - It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures, and components have not been described in detail so as not to obscure the related relevant feature being described. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features. The description is not to be considered as limiting the scope of the embodiments described herein.
- The term “comprising” means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in a so-described combination, group, series, and the like.
-
FIG. 1 illustrates a colorimage processing system 100 according to an exemplary embodiment. The colorimage processing system 100 includes animage capture module 20, animage digitizing module 30, an optimizingratio calculation module 40 and animage processing module 50. - The
image capture module 20 is configured to capture an original color image. Theimage digitizing module 30 is configured to digitize the original color image to obtain N pixels in ascending order according to value of RGB of the pixel. The optimizingratio calculation module 40 is configured to calculate an optimizing ratio H=S1*H1+S2*H2+S3*H3. S1, S2 and S3 are ratios of areas of red color, green color and blue color from μ−3σ in their own gaussian distribution. H1, H2 and H3 are ratios of areas of red color, green color and blue color to a total area of the red color, green color and blue color. - The
image processing module 50 is configure to multiply original value of RGB of the pixel before the ((N−N*H)/2)th pixel by 1/H to obtain new value of RGB of the pixel before the ((N−N*H)/2)th pixel and multiply original value of RGB of the pixel after the ((N+N*H)/2−1)th pixel by H to obtain new value of RGB of the pixel after the ((N+N*H)/2−1)th pixel. (N−N*H)/2 and (N+N*H)/2−1 are rounded to nearest integer. - The
image processing module 50 is further configure to obtain new value of RGB F(C)=M*C+Y of the pixel from the ((N−N*H)/2)th pixel to the ((N+N*H)/2−1)th. C is original value of the pixel from the ((N−N*H)/2)th pixel to the ((N+N*H)/2−1)th. M and Y satisfy M*Vmin+Y=VN−N*H)/2 and M*Vmax+Y=V(N+N*H)/2−1.Vmin is the minimum value of the original value of RGB of N pixels. Vmax is the minimum value of the original value of RGB of N pixels. V(N−N*H)/2 is the value of the original value of RGB of ((N−N*H)/2)th pixel. V(N+N*H)/2−1 is the value of the original value of RGB of ((N+N*H)/2−1)th pixel. -
FIG. 2 illustrates a flowchart of a color image processing method according to an exemplary embodiment. The illustrated order of blocks inFIG. 2 is illustrative only and the order of the blocks can change. Additional blocks can be added or fewer blocks may be utilized without departing from this disclosure. The example method can begin atblock 202. - At
block 202, theimage capture module 20 captures an original color image. - At
block 204, theimage digitizing module 30 digitizes the original color image to obtain N pixels in ascending order according to value of RGB of the pixel. - At
block 206, the optimizingratio calculation module 40 calculates an optimizing ratio H=S1*H1+S2*H2+S3*H3, wherein S1, S2 and S3 are ratios of areas of red color, green color and blue color from μ−3σ to μ+3σ in their own gaussian distribution, H1, H2 and H3 are ratios of areas of red color, green color and blue color to a total area of the red color, green color and blue color. - At
block 208, theimage processing module 50 multiplies original value of RGB of the pixel before the ((N−N*H)/2)th pixel by 1/H to obtain new value of RGB of the pixel before the ((N−N*H)/2)th pixel and multiplies original value of RGB of the pixel after the ((N+N*H)/2−1)th pixel by H to obtain new value of RGB of the pixel after the ((N+N*H)/2−1)th pixel, wherein (N−N*H)/2 and (N+N*H)/2−1 are rounded to nearest integer. - At
block 210, theimage processing module 50 obtains new value of RGB F(C)=M*C+Y of the pixel from the ((N−N*H)/2)th pixel to the ((N+N*H)/2−1)th, wherein C is original value of the pixel from the ((N−N*H)/2)th pixel to the ((N+N*H)/2−1)th, M and Y satisfy M*Vmax+Y=V(N−N*H)/2 and M*Vmax+Y=V(N+N*H)/2−1, Vmin is the minimum value of the original value of RGB of N pixels. Vmax is the minimum value of the original value of RGB of N pixels, V(N−N*H)/2 is the value of the original value of RGB of ((N−N*H)/2)th pixel, V(N+N*H)/2−1 is the value of the original value of RGB of ((N+N*H)/2−1)th pixel. - The embodiments shown and described above are only examples. Even though numerous characteristics and advantages of the present technology have been set forth in the foregoing description, together with details of the structure and function of the present disclosure, the disclosure is illustrative only, and changes may be made in the details, including in matters of shape, size, and arrangement of the parts within the principles of the present disclosure, up to and including the full extent established by the broad general meaning of the terms used in the claims.
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CN201510920555.2A CN106897965B (en) | 2015-12-14 | 2015-12-14 | Color image processing system and color image processing method |
CN201510920555.2 | 2015-12-14 | ||
CN201510920555 | 2015-12-14 |
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US9665928B1 (en) | 2017-05-30 |
CN106897965B (en) | 2020-04-28 |
CN106897965A (en) | 2017-06-27 |
TW201721584A (en) | 2017-06-16 |
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