CN106961533A - A kind of high dynamic range images paper media reproducting method printed based on ink jet digital - Google Patents

A kind of high dynamic range images paper media reproducting method printed based on ink jet digital Download PDF

Info

Publication number
CN106961533A
CN106961533A CN201710169340.0A CN201710169340A CN106961533A CN 106961533 A CN106961533 A CN 106961533A CN 201710169340 A CN201710169340 A CN 201710169340A CN 106961533 A CN106961533 A CN 106961533A
Authority
CN
China
Prior art keywords
paper media
dynamic range
high dynamic
range images
ink jet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710169340.0A
Other languages
Chinese (zh)
Inventor
李效周
赵洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qilu University of Technology
Original Assignee
Qilu University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qilu University of Technology filed Critical Qilu University of Technology
Priority to CN201710169340.0A priority Critical patent/CN106961533A/en
Publication of CN106961533A publication Critical patent/CN106961533A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32203—Spatial or amplitude domain methods
    • H04N1/32251—Spatial or amplitude domain methods in multilevel data, e.g. greyscale or continuous tone data
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • 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
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/032—Details of scanning heads ; Means for illuminating the original for picture information reproduction
    • 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
    • H04N1/40—Picture signal circuits
    • H04N1/407—Control or modification of tonal gradation or of extreme levels, e.g. background level
    • H04N1/4076—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on references outside the picture
    • H04N1/4078—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on references outside the picture using gradational references, e.g. grey-scale test pattern analysis
    • 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
    • H04N1/40—Picture signal circuits
    • H04N1/409—Edge or detail enhancement; Noise or error suppression

Abstract

The invention discloses a kind of high dynamic range images paper media reproducting method printed based on ink jet digital, concretely comprise the following steps：Measurement obtains ink jet printing paper media's dynamic range and colour generation characteristic；Calculate and obtain high dynamic range images strength information I0；To high dynamic range images strength information I0Handled, obtain brightness layer L1With levels of detail D1；To brightness layer L1Processing is filtered, brightness layer L is obtained2With levels of detail D2；To brightness layer L2Processing is filtered, brightness layer L is obtained3With levels of detail D3；Brightness layer is compressed using compression letter；According to paper media's colour generation characteristic, enhancing coefficient is respectively adopted to levels of detail and carries out enhancing processing；It is reverse to add and obtain the output for printing image by each tomographic image after processing according to ink jet printing paper media attribute.High-dynamics image is directly reproduced in paper media by the present invention, it is to avoid the problem of image level is excessively lost, and strengthens image detail information, meets the requirement that paper media reproduces high dynamic range images.

Description

A kind of high dynamic range images paper media reproducting method printed based on ink jet digital
Technical field
The invention belongs to digital printing image procossing reproduction technology field, and in particular to it is a kind of based on ink jet digital print High dynamic range images paper media reproducting method.
Background technology
High dynamic range images are a kind of images related to scene, and dynamic range is generally more than 1000:1, it can record The most of scene visually perceived.High dynamic range images high definition film, game special, tele-medicine, remote sensing satellite and The fields such as print reproduction are increasingly widely applied.But at present high dynamic range images can not directly be reproduced in itself it is low In dynamic range medium especially paper media.
Existing paper media reproduces high dynamic range images and is much smaller than the appreciable dynamic range of human eye, is shown again smaller than LCD etc. The scope of media representation high dynamic range images, it is not high to easily cause quality reproduction, the problems such as loss in detail is serious.Institute of paper media energy It is about 50 to reproduce dynamic range:1, when high dynamic range images are directly reproduced in paper media, dynamic range is greatly reduced, and is presented Larger change can occur for the monochrome information of scene so that larger change all occurs for the color of performance real scene, grain details information Change.It also can not directly increase reproduction image detail information by improving paper media's optical properties.
High dynamic range images strength information can be decomposed into brightness layer and levels of detail by image procossing by filtering process, Main spatial domain to be carried out to image using wave filter or frequency domain is handled, Frequent Filters mainly have gaussian filtering, mean filter and double Side filtering etc..But using after single filtering process, always there are the various noises such as halation, upset.
High dynamic range images contrast scope can be mapped within the scope of paper media's contrast by contrast mapping techniques, Ji Jiangtu Image brightness scope is mapped to paper media's brightness range, more details is reproduced in paper media, particularly high-brightness region and low Luminance area can show more details.Although contrast mapping solves part using global map and the method for local mapping Problem, but there are still loss in detail caused by dynamic range excess compression it is excessive, there are the phenomenons such as halation.
Reproduced to meet high dynamic range images in paper media, it is necessary to HDR figure of the exploitation suitable for this demand As details is excessively lost in processing method and reduction contrast mapping process.
The content of the invention
The purpose of the present invention is to be reproduced in for solving existing high dynamic range images by ink jet printing mode in paper media It is not enough there is provided a kind of high dynamic range images paper media reproducting method printed based on ink jet digital, can in paper media level Clearly demarcated display high dynamic range images.
The technical scheme that is used to achieve these goals of the present invention for：
The invention provides a kind of high dynamic range images paper media reproducting method printed based on ink jet digital, it is characterised in that Comprise the following steps,
（1）Measure paper media attributes, including optical properties and physical attribute obtain paper media and be situated between itself display dynamic range；
（2）Paper media's colour generation characteristic is obtained using ink-jet printer output；
（3）Read high dynamic range images Iin, calculated using gray count formula and obtain gray level image I0；
（4）To gray level image I0It is layered, using multiple filtering, obtains brightness layer L using bilateral filtering for the first time1And details Layer D1：
, wherein,,,
Wherein,BFBilateral filtering operation is represented,I in It is the source images of input,It is pixeliAnd pixeljSpace geometry away from From Gaussian function represent,It is pixeliAnd pixeljThe Gaussian function of chroma difference is represented.For pixeliWithjSky Between position relation table levy,For pixeliWithjAberration yardstick characterize.
To L1, according to paper media's Jie's gradating properties, Choose for user function F1Mapped, obtain L1’；To D1, it is situated between according to paper media Development properties are strengthened, and using enhancing factor alpha, obtain D2’；
（5）Second of filtering process, to L1' mean filter processing is carried out, obtain low-pass pictures layer L2With high-pass image layer D2：
Wherein,。
To L2, according to paper medium gradating properties, Choose for user function F2Mapped, obtain L2’；To D2, according to paper media Jie's development properties are strengthened, and using enhancing factor beta, obtain D2’；
（6）Third time filtering process, to L2' gaussian filtering process is carried out, obtain low-pass pictures layer L3With high-pass image layer D3：
Wherein,
To L3, according to paper medium gradating properties, Choose for user function F3 is mapped, and obtains L3’；To D3, it is situated between according to paper media special Property strengthened, selective enhancement coefficient gamma, obtain D3’；
（7）It is reverse to add and obtain final the output for printing image by each tomographic image after processing according to ink jet printing paper media attribute.
Further, the optical properties are whiteness, opacity；The physical attribute is quantitative, smoothness, deflection and Porosity.
Further, paper media's colour generation characteristic includes maximum density values, color gamut characteristics.
Further, the enhancing factor alpha reference value is 1.01；The enhancing factor beta reference value is 0.9；The enhancing Coefficient gamma reference value is 0.9.
Beneficial effects of the present invention are：Compared with prior art, the present invention can on the premise of sheet properties are not changed, The more level of detail of image are reproduced in paper media, noise reduction makes fringe region not by Fuzzy Influence, effectively eliminates halation phenomenon, carries Rise visual perception.
Brief description of the drawings
Fig. 1 is overall flow frame diagram of the invention.
Fig. 2 is paper media Jie characteristic flow chart of embodiment 1.
Fig. 3 is the paper media of embodiment 1 Jie colour developing gamut map.
Fig. 4 prints maximal density figure for the paper media of the case study on implementation of the present invention of embodiment 1.
Fig. 5 is the output image after untreated and processing；
Wherein, a is output image after a filtering process；B is output image after secondary filtering processing；C is three filtering process Output image afterwards；D is the untreated source images directly exported.
Embodiment
Below in conjunction with the accompanying drawings and embodiment, technical solution of the present invention is expanded on further.
Embodiment 1
As shown in figure 1, the overall flow of the present invention comprises the following steps：
Step 1, paper media attributes are measured, 6 kinds of patterns are chosen, numbering is 1#, 2#, 3#, 4#, 5# and 6# respectively, and optical properties are Whiteness, opacity；Physical attribute is quantitative, smoothness, and deflection and the porosity step concrete methods of realizing are using existing side Method, here is omitted.
Step 2, the flow according to Fig. 2, using the chromatic ink of inkjet digital 7, makes paper property file.Pass through Digital proof software and printer complete paper linearisation, generate paper property file, and paper property file record is worked as Matching relationship between preceding printer, ink and paper three, and by the reduction of the various color informations after this triplicity Ability, such as Fig. 3 and Fig. 4.
Step 3, high dynamic range images I is readin, using gray count formula, the present embodiment is usedCalculate the gray scale for obtaining HDR Image I0；
Step 4, to gray level image I0It is layered, uses wave filter for bilateral filtering, wherein, template size takes in the present embodiment N=5, chroma difference takes δ E=3, obtains brightness layer L1With levels of detail D1：
Wherein,,,
Wherein,BFBilateral filtering operation is represented,I in It is the source images of input,It is pixeliAnd pixeljSpace geometry away from From Gaussian function represent,It is pixeliAnd pixeljThe Gaussian function of chroma difference is represented.For pixeliWithjSky Between position relation table levy parameter, the present embodiment is set to 2.24,For pixeliWithjAberration yardstick characterization parameter, the present embodiment In be set to 3.
To L1, according to step 1 and the 2 paper media's Jie's characteristics obtained, Choose for user function F1Mapped, obtain L1', take F1 For sigmoid function；To D1, strengthened according to paper media's Jie's development properties, using enhancing factor alpha, obtain D2', take α=1.01；
Step 5, second of filtering process, to L1' mean filter processing is carried out, obtain low-pass pictures layer L2With high-pass image layer D2：
Wherein,
To L2, according to paper medium gradating properties, Choose for user function F2Mapped, obtain L2', take F2Brightness linear compresses Function；To D2, strengthened according to paper media's Jie's development properties, using enhancing factor beta, obtain D2', take β=0.9；
Step 6, third time filtering process, to L2' gaussian filtering process is carried out, obtain low-pass pictures layer L3With high-pass image layer D3：
,
Wherein,
To L3, according to paper medium gradating properties, Choose for user function F3 is mapped, and obtains L3', it is linear compression letter to take F3 Number；To D3, strengthened according to paper media's Jie's characteristic, selective enhancement coefficient gamma, obtain D3', take γ=0.9；
Step 7, it is reverse to add and obtain final the output for printing figure by each tomographic image after processing according to ink jet printing paper media attribute Picture.
Comparative example 1
Step 1, paper media attributes are measured, 6 kinds of patterns are chosen, numbering is 1#, 2#, 3#, 4#, 5# and 6# respectively, and optical properties are Whiteness, opacity；Physical attribute is quantitative, smoothness, and deflection and the porosity step concrete methods of realizing are using existing side Method, here is omitted.
Step 2, the flow according to Fig. 2, using the chromatic ink of inkjet digital 7, makes paper property file.Pass through Digital proof software and printer complete paper linearisation, generate paper property file, and paper property file record is worked as Matching relationship between preceding printer, ink and paper three, and by the reduction of the various color informations after this triplicity Ability, such as Fig. 3 and Fig. 4.
Step 3, high dynamic range images I is readin, using gray count formula, the present embodiment is usedCalculate the gray scale for obtaining HDR Image I0；
Step 4, to gray level image I0It is layered, uses wave filter for bilateral filtering, wherein, template size takes in the present embodiment N=5, chroma difference takes δ E=3, obtains brightness layer L1With levels of detail D1：
Wherein,,,；
Wherein,BFBilateral filtering operation is represented,I in It is the source images of input,It is pixeliAnd pixeljSpace geometry away from From Gaussian function represent,It is pixeliAnd pixeljThe Gaussian function of chroma difference is represented.For pixeliWithjSky Between position relation table levy parameter, the present embodiment is set to 2.24,For pixeliWithjAberration yardstick characterization parameter, the present embodiment In be set to 3.
To L1, according to step 1 and the 2 paper media's Jie's characteristics obtained, Choose for user function F1Mapped, obtain L1', take F1 For sigmoid function；To D1, strengthened according to paper media's Jie's development properties, using enhancing factor alpha, obtain D2', take α=1.01.

Claims (4)

1. a kind of high dynamic range images paper media reproducting method printed based on ink jet digital, it is characterised in that include following step Suddenly,
（1）Measure paper media attributes, including optical properties and physical attribute obtain paper media and be situated between itself display dynamic range；
（2）Paper media's colour generation characteristic is obtained using ink-jet printer output；
（3）Read high dynamic range images Iin, calculated using gray count formula and obtain gray level image I0；
（4）To gray level image I0It is layered, using multiple filtering, obtains brightness layer L using bilateral filtering for the first time1And details Layer D1：
, wherein,,,
Wherein,BFBilateral filtering operation is represented,I in It is the source images of input,It is pixeliAnd pixeljSpace geometry away from From Gaussian function represent,It is pixeliAnd pixeljThe Gaussian function of chroma difference is represented；For pixeliWithjSky Between position relation table levy,For pixeliWithjAberration yardstick characterize；
To L1, according to paper media's Jie's gradating properties, Choose for user function F1Mapped, obtain L1’；To D1, it is situated between according to paper media and is developed the color Characteristic is strengthened, and using enhancing factor alpha, obtains D2’；
（5）Second of filtering process, to L1' mean filter processing is carried out, obtain low-pass pictures layer L2With high-pass image layer D2：
Wherein,；
To L2, according to paper medium gradating properties, Choose for user function F2Mapped, obtain L2’；To D2, it is situated between according to paper media aobvious Color characteristic is strengthened, and using enhancing factor beta, obtains D2’；
（6）Third time filtering process, to L2' gaussian filtering process is carried out, obtain low-pass pictures layer L3With high-pass image layer D3：
Wherein,
To L3, according to paper medium gradating properties, Choose for user function F3 is mapped, and obtains L3’；To D3, it is situated between according to paper media special Property strengthened, selective enhancement coefficient gamma, obtain D3’；
（7）It is reverse to add and obtain final the output for printing image by each tomographic image after processing according to ink jet printing paper media attribute.
2. the high dynamic range images paper media reproducting method according to claim 1 printed based on ink jet digital, its feature It is that the optical properties are whiteness, opacity；The physical attribute is quantitative, smoothness, deflection and porosity.
3. the high dynamic range images paper media reproducting method according to claim 1 printed based on ink jet digital, its feature It is that paper media's colour generation characteristic includes maximum density values, color gamut characteristics.
4. the high dynamic range images paper media reproducting method according to claim 1 printed based on ink jet digital, its feature It is that the enhancing factor alpha reference value is 1.01；The enhancing factor beta reference value is 0.9；The enhancing coefficient gamma reference value For 0.9.
CN201710169340.0A 2017-03-21 2017-03-21 A kind of high dynamic range images paper media reproducting method printed based on ink jet digital Pending CN106961533A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710169340.0A CN106961533A (en) 2017-03-21 2017-03-21 A kind of high dynamic range images paper media reproducting method printed based on ink jet digital

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710169340.0A CN106961533A (en) 2017-03-21 2017-03-21 A kind of high dynamic range images paper media reproducting method printed based on ink jet digital

Publications (1)

Publication Number Publication Date
CN106961533A true CN106961533A (en) 2017-07-18

Family

ID=59470333

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710169340.0A Pending CN106961533A (en) 2017-03-21 2017-03-21 A kind of high dynamic range images paper media reproducting method printed based on ink jet digital

Country Status (1)

Country Link
CN (1) CN106961533A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103177429A (en) * 2013-04-16 2013-06-26 南京理工大学 FPGA (field programmable gate array)-based infrared image detail enhancing system and method
CN104408752A (en) * 2014-12-11 2015-03-11 西安电子科技大学 High dynamic range image compression method based on mixed tone mapping algorithm
CN105915909A (en) * 2016-05-27 2016-08-31 清华大学深圳研究生院 High-dynamic-range image layered compression method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103177429A (en) * 2013-04-16 2013-06-26 南京理工大学 FPGA (field programmable gate array)-based infrared image detail enhancing system and method
CN104408752A (en) * 2014-12-11 2015-03-11 西安电子科技大学 High dynamic range image compression method based on mixed tone mapping algorithm
CN105915909A (en) * 2016-05-27 2016-08-31 清华大学深圳研究生院 High-dynamic-range image layered compression method

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
XIAOZHOU LI等: "Reproduction of HDR Image Based on Multiple Bilateral Filtering", 《ADVANCED GRAPHIC COMMUNICATIONS AND MEDIA TECHNOLOGIES》 *
李效周，赵洋，贾景强，曹前: "一种基于双边滤波的高动态范围图像再现", 《齐鲁工业大学学报》 *

Similar Documents

Publication Publication Date Title
CN101901475B (en) High dynamic range image tone mapping method based on retina adaptive model
US9232112B2 (en) Method and apparatus for effecting color separation, color variation, color characterization, and gamut mapping in color printing
JP7280670B2 (en) Image processing device, control method, and program
CN106897972A (en) A kind of self-adapting histogram underwater picture Enhancement Method of white balance and dark primary
JP4946795B2 (en) Image processing apparatus and image processing method
JP7117915B2 (en) Image processing device, control method, and program
JP2019511342A5 (en)
WO2006064913A1 (en) Image processing method
KR20120107429A (en) Zone-based tone mapping
WO2020007166A1 (en) Video signal processing method and apparatus
CN101507258A (en) Image gamut mapping
US10764469B2 (en) Image processing apparatus, image processing method, and storage medium that convert an input luminance signal included in image data into an output signal for printing by using a conversion parameter
JP4498432B2 (en) Method for suppressing coloration of pixels near achromatic color, image processing apparatus, program, and recording medium
JP2020074501A (en) Image processing apparatus, image processing method, and program
Su et al. Joint contrast enhancement and noise reduction of low light images via JND transform
US20030053159A1 (en) Image processing method and apparatus
JP5975213B2 (en) Image processing apparatus and image processing program
US8351724B2 (en) Blue sky color detection technique
CN106952237A (en) A kind of high dynamic range images paper media reproducting method based on electrostatic digital printing
CN106961533A (en) A kind of high dynamic range images paper media reproducting method printed based on ink jet digital
CN105599296B (en) 2.5D image printing method
JP4848903B2 (en) Color processing apparatus, color processing method, and program
Pedersen et al. Rank order and image difference metrics
JP2021082069A (en) Image processing system, imaging apparatus, image processing method, and program
Fairchild et al. Image appearance modeling and high-dynamic-range image rendering

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20170718

RJ01 Rejection of invention patent application after publication