CN106323473B - A kind of tinctorial pattern method for evaluating consistency under big aberration - Google Patents
A kind of tinctorial pattern method for evaluating consistency under big aberration Download PDFInfo
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- CN106323473B CN106323473B CN201610640541.XA CN201610640541A CN106323473B CN 106323473 B CN106323473 B CN 106323473B CN 201610640541 A CN201610640541 A CN 201610640541A CN 106323473 B CN106323473 B CN 106323473B
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- 238000013461 design Methods 0.000 claims abstract description 5
- 239000000523 sample Substances 0.000 claims description 22
- 239000013074 reference sample Substances 0.000 claims description 9
- 238000002474 experimental method Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 5
- 238000011156 evaluation Methods 0.000 abstract description 15
- 238000005457 optimization Methods 0.000 abstract 1
- 239000003086 colorant Substances 0.000 description 2
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- 238000013441 quality evaluation Methods 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 238000011077 uniformity evaluation Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
- G01J3/465—Measurement of colour; Colour measuring devices, e.g. colorimeters taking into account the colour perception of the eye; using tristimulus detection
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Abstract
The invention provides the tinctorial pattern collection method for evaluating consistency under a kind of big aberration, this method propose and obtains uniformity tinctorial pattern collection flow and corresponding tinctorial pattern collection Conformance Assessment step.The evaluation method of the present invention improves the minimum chromatism method of tradition and measures the problem of value of chromatism is with subjective vision difference value matching difference during tinctorial pattern collection Conformance Assessment under big aberration, algorithm design framework also is provided to obtain objective evaluation formula or model optimization simultaneously, is advantageous to meet that the big objective colour appraisal tool across media representation of output colour gamut difference is developed.
Description
Technical field
The present invention relates to a kind of Color Evaluation Method, the tinctorial pattern method for evaluating consistency under particularly a kind of big aberration.
Background technology
Tinctorial pattern collection Conformance Assessment is branch important in color evaluation field, and it provides weight to color reproduction quality evaluation
The reference wanted.Objective tinctorial pattern collection method for evaluating consistency is based particularly on, it is mainly used in difference in traditional printing field
Under printed medium there is very high uniformity printed matter to obtain, but existing tinctorial pattern method for evaluating consistency is to use base
The minimum chromatism method evaluated and developed in small aberration, but this evaluation method can not match people well in the evaluation of big aberration
Eye subjective vision.
Tinctorial pattern collection Conformance Assessment mainly solves the total evaluation of the intermediate color quality reproduction of different colour gamut features, mesh
The preceding method for obtaining uniformity tinctorial pattern is mainly subjective regulation method.But this subjective method for the color client in industry and
Speech, it is simultaneously not easy to exchange and measured, it is therefore desirable to obtains objective models or formula to strengthen its application and versatility.
The uniformity color lump collection obtained based on subjective evaluation method, it can simultaneously obtain and be measured between the tinctorial pattern and reference tinctorial pattern
Value of chromatism and subjective vision difference value.Therefore in the case where the colour gamut feature where different tinctorial pattern collection has and seldom occured simultaneously, i.e. tinctorial pattern collection
Between color distinction it is bigger in the case of, very high uniformity tinctorial pattern collection is obtained by the continuous minor adjustments of color attribute
It can be used for exploring objective conversion formula or model, and this objective acquisition modes will have good versatility and expansion
Property, so uniformity tinctorial pattern obtains and quantization method is that tinctorial pattern collection Conformance Assessment needs to solve the problems, such as first.
The content of the invention
For overcome the deficiencies in the prior art, the present invention provides the tinctorial pattern collection method for evaluating consistency under a kind of big aberration,
The evaluation method proposes subjective acquisition uniformity tinctorial pattern collection framework and the quantization step for tinctorial pattern collection Conformance Assessment.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of tinctorial pattern method for evaluating consistency under big aberration, it is characterised in that：Comprise the following steps：
1), 12 kinds of color centers are selected to refer to sample in 7 class color sets of ISO/PAS15339 standards, and in AdobeRGB
Corresponding 12 kinds of color centers of selection refer to sample as original reference sample in colour gamut；
2), 12 kinds of color centers in 7 class color sets of ISO/PAS15339 standards are referred to the attributes of color LCh tri- of sample
Value carries out 18 kinds of changes, and goes out 1596 kinds of color experiment samples according to change design；
3), a number of observer is selected to test sample and the original reference sample in AdobeRGB colour gamuts to each color
Otherness subjective measure is carried out using category judgement method under the conditions of standard sight, and obtains tinctorial pattern diversity factor value；
4), for all tinctorial pattern diversity factor values in every a kind of color set, characterized using Mean Opinion Score number and Z score
Afterwards, the tinctorial pattern that Mean Opinion Score number is maximum and Z score is minimum is selected to be considered as the consistent tinctorial pattern under such color set；
5) the color experiment sample of 3 kinds of non-uniform tinctorial patterns, is randomly choosed in every class color set, calculates itself and a coloring respectively
The value of chromatism of corresponding original reference sample in sample and AdobeRGB colour gamuts；
6) value of chromatism for testing tinctorial pattern and consistent tinctorial pattern and its subjective difference measure value, are carried out into linear fit to obtain unanimously
Property metric function.
The 7 class color set refer to respectively CRPC1 color sets, CRPC2 color sets, CRPC3 color sets, CRPC4 color sets,
CRPC5 color sets, CRPC6 color sets and CRPC7 color sets.
12 kinds of color centers are with reference to the square solid block of color that sample is all that the length of side is 80~150 pixels.
The changing value of 18 kinds of changes of the property values of LCh tri- is all identical to every a kind of color set.
The beneficial effects of the invention are as follows：Method proposes obtain uniformity tinctorial pattern collection flow and corresponding tinctorial pattern collection uniformity
Evaluation procedure.The evaluation method of the present invention improves the minimum chromatism method of tradition and measured under big aberration during tinctorial pattern collection Conformance Assessment
The problem of value of chromatism is with subjective vision difference value matching difference, while also provided to obtain objective evaluation formula or model development
Algorithm design framework, be advantageous to the exploitation of industrialization color evaluation instrument.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is showing the method flow diagram of the tinctorial pattern collection Conformance Assessment in the embodiment of the present invention.
Embodiment
Reference picture 1, the method that Fig. 1 gives the tinctorial pattern collection Conformance Assessment under a kind of big aberration in the embodiment of the present invention
Flow chart, comprise the following steps that：
12 kinds of color centers are selected to refer to sample in 7 class color sets of ISO/PAS15339 standards, and in AdobeRGB colors
Corresponding 12 kinds of color centers of selection refer to sample as original reference sample in domain；
12 kinds of color centers in 7 class color sets of ISO/PAS15339 standards are referred to the property values of color LCh tri- of sample
18 kinds of changes are carried out, and 1596 kinds of color experiment samples are gone out according to change design；
Select a number of observer to test each color in sample with the original reference sample in AdobeRGB colour gamuts to exist
Otherness subjective measure is carried out using category judgement method under the conditions of standard sight, and obtains tinctorial pattern diversity factor value；
For all tinctorial pattern diversity factor values in every a kind of color set, after being characterized using Mean Opinion Score number and Z score, choosing
Select the consistent tinctorial pattern that the tinctorial pattern that Mean Opinion Score number is maximum and Z score is minimum is considered as under such color set；Mean Opinion Score number is just
It is to be divided equally all observers for the evaluation of estimate of some object, its formula：
It is a kind of statistical method that Z score, which characterizes, and mainly it can describe the subjective factor of each observer's evaluation of estimate
Weight, this method are conventional in size aberration evaluation experimental, thus specific function will herein be described in detail.
The color experiment sample of 3 kinds of non-uniform tinctorial patterns is randomly choosed in every class color set, calculates itself and consistent tinctorial pattern respectively
The value of chromatism of corresponding original reference sample with AdobeRGB colour gamuts；
The value of chromatism for testing tinctorial pattern and consistent tinctorial pattern and its subjective difference measure value are subjected to linear fit and obtain uniformity
Metric function, consistency metric function is also conventional function in this area, thus will herein be described in detail its formula.
Specifically, the 7 class color set refers to CRPC1 color sets, CRPC2 color sets, CRPC3 color sets, CRPC4 face respectively
Color collection, CRPC5 color sets, CRPC6 color sets and CRPC7 color sets；
18 kinds of LCh attribute change values are the random changes simultaneously of the attribute of L, C and h tri-, and all colours after processing are tested
Sample is all in the gamut boundary that its corresponding color collection is formed；
The changing value of 18 kinds of changes of the property values of LCh tri- is all identical to every a kind of color set.
Case study on implementation one
If display used is EIZO ColorEdge series, 12 kinds of color centers are preferably with reference to the length of side of sample
The square solid block of color of 100 pixels；The quantity of the particular observer is preferably 15 people；
Under the conditions of the standard sight, the target light source is D65, gamma value 2.2；The display brightness is preferably
120cd/m2；The observation sighting distance is preferably 75cm.
Case study on implementation two
If display used is EIZO ColorEdge series, 12 kinds of color centers are preferably 90 with reference to the length of side of sample
The square solid block of color of pixel；The quantity of the particular observer is preferably 18 people；
Under the conditions of the standard sight, the target light source is D65, gamma value 2.2；The display brightness is preferably
80cd/m2；The observation sighting distance is preferably 60cm.
Case study on implementation three
If display used is NEC PW series, 12 kinds of color centers are preferably 100 pixels with reference to the length of side of sample
Square solid block of color；The quantity of the particular observer is preferably 20 people；
Under the conditions of the standard sight, the target light source is D65, gamma value 2.2；The display brightness is preferably
120cd/m2；The observation sighting distance is preferably 60cm.
Tinctorial pattern method for evaluating consistency under a kind of big aberration provided above the embodiment of the present invention, carry out in detail
Introduce, specific case used herein is set forth to the principle and embodiment of the present invention, the explanation of above example
It is only intended to help the method and its core concept for understanding the present invention；Meanwhile for those of ordinary skill in the art, according to this
The thought of invention, there will be changes in specific embodiments and applications, in summary, this specification content should
It is interpreted as limitation of the present invention.
Claims (4)
- A kind of 1. tinctorial pattern method for evaluating consistency under big aberration, it is characterised in that：Comprise the following steps：1), 12 kinds of color centers are selected to refer to sample in 7 class color sets of ISO/PAS15339 standards, and in AdobeRGB colour gamuts Interior corresponding 12 kinds of color centers of selection are with reference to sample as original reference sample；2), color LCh tri- property value of the 12 kinds of color centers in 7 class color sets of ISO/PAS15339 standards with reference to sample is entered 18 kinds of changes of row, and 1596 kinds of color experiment samples are gone out according to change design；3) a number of observer, is selected to mark each color experiment sample with the original reference sample in AdobeRGB colour gamuts Otherness subjective measure is carried out using category judgement method under quasi- observation condition, and obtains tinctorial pattern difference measure value；4), for all tinctorial pattern difference measure values in every a kind of color set, after being characterized using Mean Opinion Score number and Z score, choosing Select the consistent tinctorial pattern that the tinctorial pattern that Mean Opinion Score number is maximum and Z score is minimum is considered as under such color set；5) the color experiment sample of 3 kinds of non-uniform tinctorial patterns, is randomly choosed in every class color set, calculate respectively its with consistent tinctorial pattern and The value of chromatism of corresponding original reference sample in AdobeRGB colour gamuts；6) value of chromatism for testing tinctorial pattern and consistent tinctorial pattern and its subjective difference measure value, are subjected to linear fit and obtain uniformity degree Flow function.
- 2. the tinctorial pattern method for evaluating consistency under a kind of big aberration according to claim 1, it is characterised in that：7 class Color set refers to CRPC1 color sets, CRPC2 color sets, CRPC3 color sets, CRPC4 color sets, CRPC5 color sets, CRPC6 respectively Color set and CRPC7 color sets.
- 3. the tinctorial pattern method for evaluating consistency under a kind of big aberration according to claim 1, it is characterised in that：Described 12 kinds Color center is with reference to the square solid block of color that sample is all that the length of side is 80~150 pixels.
- 4. the tinctorial pattern method for evaluating consistency under a kind of big aberration according to claim 1, it is characterised in that：The LCh The changing value of 18 kinds of changes of three property values is all identical to every a kind of color set.
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|---|---|---|---|---|
| US5223916A (en) * | 1990-12-28 | 1993-06-29 | Tetsuya Muraoka | Device for discriminating variations in the magnitudes of color differences |
| CN103347141A (en) * | 2013-05-08 | 2013-10-09 | 西安理工大学 | CMYK four-color printing chromatic aberration positioning method |
| CN103685856A (en) * | 2013-12-12 | 2014-03-26 | 中国印刷科学技术研究所 | Large breadth scanning color aberration correcting method based on complex frequency spectrum chrominance principle |
| CN104034424A (en) * | 2014-05-30 | 2014-09-10 | 杭州电子科技大学 | Method for detecting and analyzing printing quality of decorative paper |
| CN105300522A (en) * | 2015-09-20 | 2016-02-03 | 杭州电子科技大学 | Chromaticity quantitative calculation method capable of reducing influence of color measurement uncertainty |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000314663A (en) * | 1999-04-28 | 2000-11-14 | Rohm Co Ltd | Color judgment apparatus and creation method for color space table as well as recording medium |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5223916A (en) * | 1990-12-28 | 1993-06-29 | Tetsuya Muraoka | Device for discriminating variations in the magnitudes of color differences |
| CN103347141A (en) * | 2013-05-08 | 2013-10-09 | 西安理工大学 | CMYK four-color printing chromatic aberration positioning method |
| CN103685856A (en) * | 2013-12-12 | 2014-03-26 | 中国印刷科学技术研究所 | Large breadth scanning color aberration correcting method based on complex frequency spectrum chrominance principle |
| CN104034424A (en) * | 2014-05-30 | 2014-09-10 | 杭州电子科技大学 | Method for detecting and analyzing printing quality of decorative paper |
| CN105300522A (en) * | 2015-09-20 | 2016-02-03 | 杭州电子科技大学 | Chromaticity quantitative calculation method capable of reducing influence of color measurement uncertainty |
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Effective date of registration: 20230925 Address after: 215300, Huyuan Road, Dianshan, Suzhou City, Jiangsu Province Patentee after: ZRP Printing (Kunshan) Co.,Ltd. Address before: No. 60 Zhongshan Port Avenue, Torch Development Zone, Zhongshan City, Guangdong Province, 528437 Patentee before: Zhongshan Torch Polytechnic |