CN106340012B

CN106340012B - Printed matter method for detecting color and device

Info

Publication number: CN106340012B
Application number: CN201610709751.XA
Authority: CN
Inventors: 杨艺; 王文龙; 姚毅; 刘士清; 陈昌陶
Original assignee: Luster LightTech Co Ltd
Current assignee: Luster LightTech Co Ltd
Priority date: 2016-08-23
Filing date: 2016-08-23
Publication date: 2019-09-06
Anticipated expiration: 2036-08-23
Also published as: CN106340012A

Abstract

The embodiment of the present application discloses a kind of printed matter method for detecting color and device.In coloured control, color control item can be used and carry out color detection, do not contacted with printed matter, directly obtain color lump LAB value by establishing the LAB image of printed matter online, and calculate color lump color difference, precision and efficiency of detecting greatly improves.The method that color detection is directly carried out according to printed matter content is additionally provided simultaneously, the method is after obtaining the LAB image of printed matter, obtain the LAB value of the detection zone of colour cell in the color detection area LAB image, then the color difference of the colour cell according to the LAB value and preset standard formwork calculation, with wider array of applicability and higher efficiency, and according to the color difference of the colour cell, available more monitoring projects realize the real time monitoring more perfect to color printing situation.

Description

Printed matter method for detecting color and device

Technical field

The present invention relates to printing technology more particularly to a kind of printed matter method for detecting color and device.

Background technique

Traditional printed matter color detection is non-online mode, by trained tester's eye-observation, or is made It is detected with the color detection instrument contacted with printed matter, can only detect the misalignment of certain point every time, it can not be right in real time The entire breadth of printed matter is detected, and detection efficiency is not also high.

Online color detection can be carried out to printed matter using machine visual detection device at present, this mode is often edge Comparison template is established in printing movement direction, is lacked to detect printed matter obtained by the different printing time relative to the color of comparison template Fall into, but this mode cannot detect the color homogeneity of printed matter in the direction of motion vertical with printing movement direction, also without Method analyzes colour deficient Producing reason.

Summary of the invention

To overcome the problems, such as that printed matter color detection low efficiency in the related technology, the application provide a kind of printed matter color inspection Survey method and device.

According to the embodiment of the present application in a first aspect, providing a kind of printed matter method for detecting color, comprising:

Obtain the full width face multispectral image for being detected printed matter；

Color detection area LAB image is obtained according to full width face multispectral image, the color detection area is preset；

Obtain the LAB value of color lump in the color detection area LAB image；

According to the LAB value of the LAB value and reference color control color lump corresponding with the color lump, the LAB image is calculated The color difference of middle color lump.

Optionally, the printed matter method for detecting color, further includes:

Ink key corresponding for the color lump, judges whether the color difference is greater than or equal to the corresponding colour threshold of the black key Value；

If the color difference is greater than or equal to the color difference threshold, overload alarm is carried out.

Optionally, the printed matter method for detecting color, further includes:

Ink key corresponding for the color lump shows the corresponding color difference of the black key along the variation tendency of time shaft.

It is optionally, described that color detection area LAB image is obtained according to full width face multispectral image, comprising:

Identify the positioning core region on the multispectral image of the full width face；

According to the positioning core zone location color detection area；

The LAB value for calculating the color detection area obtains color detection area LAB image.

Optionally, the printed matter method for detecting color, further includes:

Show the LAB value, the color difference and the corresponding black key mark of the color lump.

According to the second aspect of the embodiment of the present application, another printed matter method for detecting color is provided, comprising:

The LAB value of the detection zone of colour cell in the color detection area LAB image is obtained, the size of the detection zone is set in advance Fixed, the color for belonging to the detection zone of the same colour cell is identical；

According to the color difference of colour cell described in the LAB value and preset standard formwork calculation.

Optionally, the color difference of the colour cell according to the LAB value and preset standard formwork calculation, comprising:

Obtain the standard LAB value of color lump corresponding with the detection zone in the preset standard template；

According to the LAB value and the standard LAB value, the color difference of the detection zone is calculated；

The average value for calculating the color difference of all detection zones in the colour cell obtains the color difference of the colour cell.

Optionally, the printed matter method for detecting color, further includes display color difference scatter diagram, and the display color difference is spread Figure, comprising:

It shows the distribution map of the colour cell, and shows the corresponding color difference of each colour cell on the distribution map；Alternatively,

The corresponding color difference of each colour cell is shown on colour cell area coordinate figure.

Optionally, the printed matter method for detecting color further includes display related colour color difference scatter diagram, the display phase Close color color difference scatter diagram, comprising:

It obtains user and operation is checked to the related colour of the colour cell, the related colour is the original for forming the color of the colour cell Beginning blendes together color；

Check that operation shows the corresponding related colour of the colour cell according to the related colour；

Obtain the related colour selection operation of user；

Corresponding related colour color difference scatter diagram is shown according to the related colour selection operation.

Optionally, the printed matter method for detecting color further includes display color difference tendency chart, the display color difference trend Figure, comprising:

Show trend chart of the same colour cell through the resulting color difference of repeated detection along time shaft, the repeated detection is Detection to multiple detected printed matters.

Optionally, the printed matter method for detecting color further includes calculating colour cell uniformity color difference, the calculating colour cell Uniformity color difference, comprising:

The first average value of the color difference of same colour cell in all left Xiao Zhangs for being detected printed matter is calculated, and is calculated tested Survey the second average value of the color difference of same colour cell in all right Xiao Zhangs of printed matter；

The difference between first average value and second average value is calculated, the colour cell uniformity color difference is obtained.

Optionally, the printed matter method for detecting color further includes display colour cell uniformity color difference scatter diagram, described aobvious Show colour cell uniformity color difference scatter diagram, comprising:

It shows the distribution map of the colour cell, and shows the corresponding colour cell uniformity color of each colour cell on the distribution map Difference；Alternatively,

The corresponding colour cell uniformity color difference of each colour cell is shown on colour cell area coordinate figure.

Optionally, the printed matter method for detecting color further includes display colour cell uniformity color difference tendency chart, described aobvious Show colour cell uniformity color difference tendency chart, comprising:

Show trend chart of the same colour cell through the resulting colour cell uniformity color difference of repeated detection along time shaft, it is described Repeated detection is the detection to multiple detected printed matters.

Optionally, the printed matter method for detecting color, further includes:

Judge whether the color difference of the colour cell is greater than or equal to corresponding color difference threshold；

According to the positioning core zone location color detection area；

According to the third aspect of the embodiment of the present application, another printed matter method for detecting color is provided, comprising:

Judge whether there is color control item；

When there are color control, following steps are executed:

The LAB value of process color control color lump in the color detection area LAB image is obtained, and

According to the LAB value of the LAB value and reference color control color lump corresponding with the color lump, the LAB image is calculated The color difference of middle color lump；

When color control is not present, following steps are executed:

The LAB value of the detection zone of colour cell in the color detection area LAB image is obtained, the color detection area is set in advance Fixed, the color for belonging to the detection zone of the same colour cell is identical, and

Optionally, the printed matter method for detecting color, which is characterized in that according to the LAB value and preset standard mould Plate calculates the color difference of the colour cell, comprising:

Obtain the related colour selection operation of user；

According to the positioning core zone location color detection area；

Corresponding to the embodiment of the present application in a first aspect, according to the fourth aspect of the embodiment of the present application, a kind of printing is provided Product color detection means, comprising:

Full width face multispectral image acquiring unit, for obtaining the full width face multispectral image of detected printed matter；

LAB image acquisition unit, for obtaining color detection area LAB image, institute according to full width face multispectral image Color detection area is stated to preset；

LAB value acquiring unit, for obtaining the LAB value of color lump in the color detection area LAB image；

Colorimetry unit, for the LAB according to the LAB value and reference color control color lump corresponding with the color lump Value, calculates the color difference of color lump in the LAB image.

Optionally, the LAB image acquisition unit, comprising:

Positioning core region identification module, for identification the positioning core region on the multispectral image of the full width face；

Color detection area locating module, for according to the positioning core zone location color detection area；

LAB value computing module obtains color detection area LAB image for calculating the LAB value in the color detection area.

A kind of printing is provided according to the 5th of the embodiment of the present application the aspect corresponding to the second aspect of the embodiment of the present application Product color detection means, comprising:

Detection zone LAB value acquiring unit, for obtaining the LAB of the detection zone of colour cell in the color detection area LAB image Value, the preset amount of the detection zone, the color for belonging to the detection zone of the same colour cell are identical；

Colour cell Colorimetry unit, the color difference for the colour cell according to the LAB value and preset standard formwork calculation.

Optionally, the colour cell Colorimetry unit, comprising:

Standard LAB value obtains module, for obtaining color lump corresponding with the detection zone in the preset standard template Standard LAB value；

Detection zone Colorimetry module, for calculating the detection zone according to the LAB value and the standard LAB value Color difference；

Color difference mean value calculation module obtains institute for calculating the average value of the color difference of all detection zones in the colour cell State the color difference of colour cell.

Optionally, the printed matter color detection means further include color difference scatter diagram display unit, and the color difference is spread Figure display unit for showing the distribution map of the colour cell, and shows the corresponding color difference of each colour cell on the distribution map；Or Person, for showing the corresponding color difference of each colour cell on colour cell area coordinate figure.

Optionally, the printed matter color detection means further include related colour color difference scatter diagram display unit, the phase Close color color difference scatter diagram display unit, comprising:

Related colour checks module, checks operation to the related colour of the colour cell for obtaining user, the related colour is group Color is blended together at the original of color of the colour cell；

Related colour option display module, for checking that operation shows the corresponding related colour of the colour cell according to the related colour Option；

Related colour selecting module, for obtaining the related colour selection operation of user according to the related colour option；

Related colour color difference scatter diagram display module, for showing corresponding related colour color according to the related colour selection operation Poor scatter diagram.

Optionally, the printed matter color detection means further include color difference tendency chart display unit, the color difference trend Figure unit, for showing trend chart of the same colour cell through the resulting color difference of repeated detection along time shaft, the multiple inspection It surveys as the detection to multiple detected printed matters.

Optionally, the printed matter color detection means further include colour cell uniformity Colorimetry unit, the colour cell Uniformity Colorimetry unit, comprising:

First mean value calculation module, the color difference of same colour cell in all left Xiao Zhangs for calculating detected printed matter First average value,

Second mean value calculation module, the color difference of same colour cell in all right Xiao Zhangs for calculating detected printed matter Second average value；

Difference calculating module obtains institute for calculating the difference between first average value and second average value State colour cell uniformity color difference.

Optionally, the printed matter color detection means further include colour cell uniformity color difference scatter diagram display unit, institute Colour cell uniformity color difference scatter diagram display unit is stated, is shown for showing the distribution map of the colour cell, and on the distribution map The corresponding colour cell uniformity color difference of each colour cell；Alternatively, for showing the corresponding color of each colour cell on colour cell area coordinate figure Group uniformity color difference.

Optionally, the printed matter color detection means further include colour cell uniformity color difference tendency chart display unit, institute Colour cell uniformity color difference tendency chart display unit is stated, for showing the same colour cell through the resulting colour cell uniformity color of repeated detection For difference along the trend chart of time shaft, the repeated detection is the detection to multiple detected printed matters.

Optionally, the printed matter color detection means, further includes:

Judging unit, for judging whether the color difference of the colour cell is greater than or equal to corresponding color difference threshold；

Alarm unit carries out overload alarm if being greater than or equal to the color difference threshold for the color difference.

Optionally, the LAB image acquisition unit, comprising:

A kind of printing is provided according to the 6th of the embodiment of the present application the aspect corresponding to the third aspect of the embodiment of the present application Product color detection means, comprising:

Color control judging unit, for judging whether there is color control item；

LAB value acquiring unit, for when there are color control, obtaining the LAB of color lump in the color detection area LAB image Value；

Colorimetry unit, for when there are color control, according to the LAB value and reference color corresponding with the color lump The LAB value for controlling a color lump, calculates the color difference of color lump in the LAB image.

Detection zone LAB value acquiring unit, for obtaining in the color detection area LAB image when color control is not present The LAB value of the detection zone of colour cell, the preset amount of the detection zone belong to the color phase of the detection zone of the same colour cell Together；

Colour cell Colorimetry unit is used for when color control is not present, according to the LAB value and preset standard formwork calculation The color difference of the colour cell.

Technical solution provided by the embodiments of the present application can be used color control item and carry out color detection, no in coloured control Be same as it is conventional will test instrument and contact the detection method got ready in turn with printed matter, color control face provided by the embodiment of the present application Color detection method is not contacted with printed matter, directly obtains color lump LAB value by establishing the LAB image of printed matter online, and count Color lump color difference is calculated, precision and efficiency of detecting greatly improves, and convenient for observing black keyness energy and black key performance change in real time.This Shen Please embodiment additionally provide directly according to printed matter content carry out color detection method, the method use preset standard template Color control item is substituted, the preset standard template is established according to printed matter content, after obtaining the LAB image of printed matter, obtains institute The LAB value of the detection zone of colour cell in color detection area LAB image is stated, wherein the preset amount of detection zone, belonged to same The color of the detection zone of colour cell is identical, then the color difference of the colour cell according to the LAB value and preset standard formwork calculation, the party Method does not use color control item, has wider array of applicability and higher efficiency, and according to the color difference of the colour cell, available color Color difference scatter diagram, color difference tendency chart, related colour color difference scatter diagram, uniformity color difference scatter diagram and the uniformity color difference tendency chart of group Deng to carry out more perfect real time monitoring to color printing situation.

It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not The application can be limited.

Detailed description of the invention

In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, for those of ordinary skill in the art Speech, without any creative labor, is also possible to obtain other drawings based on these drawings.

Fig. 1 is a kind of flow diagram of printed matter method for detecting color shown in one exemplary embodiment of the application.

Fig. 2 is the flow diagram of another printed matter method for detecting color shown in one exemplary embodiment of the application.

Fig. 3 is a kind of flow diagram of printed matter method for detecting color shown in one exemplary embodiment of the application.

Fig. 4 is the flow diagram of another printed matter method for detecting color shown in one exemplary embodiment of the application.

Fig. 5 is a color difference scatter diagram example.

Fig. 6 is the flow diagram of another printed matter method for detecting color shown in one exemplary embodiment of the application.

Fig. 7 is a color difference tendency chart example.

Fig. 8 is the flow diagram of another printed matter method for detecting color shown in one exemplary embodiment of the application.

Fig. 9 is the flow diagram of another printed matter method for detecting color shown in one exemplary embodiment of the application.

Figure 10 is a kind of block diagram of printed matter color detection means shown in one exemplary embodiment of the application.

Figure 11 is a kind of block diagram of printed matter color detection means shown in one exemplary embodiment of the application.

Figure 12 is the block diagram of another printed matter color detection means shown in one exemplary embodiment of the application.

Figure 13 is the block diagram of another printed matter color detection means shown in one exemplary embodiment of the application.

Figure 14 is the block diagram of another printed matter color detection means shown in one exemplary embodiment of the application.

Figure 15 is the block diagram of another printed matter color detection means shown in one exemplary embodiment of the application.

Specific embodiment

Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended The example of the consistent device and method of some aspects be described in detail in claims, the application.

For comprehensive understanding the application, numerous concrete details are referred in the following detailed description, but this field skill Art personnel are it should be understood that the application may not need these details and realize.In other embodiments, it is not described in detail known Method, process, component and circuit, in order to avoid it is fuzzy to undesirably result in embodiment.

Fig. 1 is a kind of flow diagram of printed matter method for detecting color shown in one exemplary embodiment of the application, institute State method using color control item, as shown in Figure 1, which comprises

Step S101 obtains the full width face multispectral image for being detected printed matter；

Step S102 obtains color detection area LAB image, the color detection area according to full width face multispectral image It presets；

Step S103 obtains the LAB value of color lump in the color detection area LAB image；

Step S104 calculates institute according to the LAB value of the LAB value and reference color control color lump corresponding with the color lump State the color difference of color lump in LAB image.

Wherein, full width face multispectral image can be used the detected printed matter of full width face multispectral camera shooting and obtain, example Printed matter such as is shot using the TruePixa full width face multispectral camera of Chromasens company, TruePixa camera there are 12 channels Image data rebuilding spectrum is carried out according to the image data in 12 channels, just capable of obtaining high-precision LAB image, (L is indicated The lightness of areflexia light, A indicate that the red ingredient with green, B indicate the ingredient of yellow and blue in reflected light in reflected light). TruePixa full width face multispectral camera precision is high and speed is fast, for other full width face multispectral cameras that may be present, After shooting obtains image data, rebuilding spectrum, available LAB image are carried out to image data.Use the multispectral phase in full width face Machine can obtain the full width face multispectral image of each tested printed matter in real time, and then obtain each tested print in real time The LAB image of brush product.

If each pixel to full width face image calculates LAB value, full width face image is completely converted into LAB figure Picture can make conversion speed very slow since pixel quantity is numerous, furthermore, it is not that all parts of printed matter require to carry out Color detection, such as text and textured pattern are just not required to carry out color detection.It is preferred, therefore, that delimiting in advance tested The region for needing color detection in printed matter, i.e. color detection area are surveyed, is only converted to the color detection area of detected printed matter LAB image.If full width face image all parts require to carry out color detection, color detection area is whole picture full width face image. Conversion speed can be greatly speeded up by only carrying out the conversion of LAB image to color detection area, improve the real-time of detection process.

Color detection area, which is not necessarily, to be all connected to, it may be possible to dispersion, according to full width face image need to carry out color Depending on the specific distribution situation of detection part, the color in each color detection area is uniform.Specifically, described according to Full width face multispectral image obtains color detection area LAB image, may include:

(a1) the positioning core region on the multispectral image of the full width face is identified；

(a2) according to the positioning core zone location color detection area；

(a3) the LAB value for calculating the color detection area, obtains color detection area LAB image.

Be detected printed matter in color detection area although preset, but due to detection when printing process in, be detected Surveying printed matter is real time kinematics, therefore the position of each section is not necessarily completely in the full width face image of multispectral camera acquisition It is consistent, it is therefore preferred to, after one full width face multispectral image of every acquisition, color detection area therein is relocated, But since the color in color detection area is uniformly, to not necessarily have apparent feature, therefore can be by positioning core region Color detection area is positioned, the positioning core region be the region that feature significantly facilitates identification in detected printed matter, Positioning core region is preset, and after positioning core region setting, the positional relationship between color detection area and positioning core region is also true It is fixed.After getting full width face multispectral image, positioning core region therein is identified, conventional figure can be used in the identification As recognition methods, discrimination is not needed to the identification of positioning core region and is reached absolutely, it is only necessary to identify positioning core area Then position in the full width face multispectral image in domain is closed according to the position between color detection area and positioning core region System, positions color detection area.After position color detection zone, the LAB value in the color detection area is calculated, to obtain Color detection area LAB image.

When there are color control, color control item can be used and carry out color detection.The use of color control item is primarily directed to offset printing Each color roller of printing machine, offset machine is made of different black keys, and Mo Jian controls the face of printed matter by ink control Color, each color lump corresponding one independent black key on color control item.Using which kind of color control item detected by testing staff according to Actual conditions determine.

It should be noted that the purpose of color detection is tested and analyzed by the color to printed matter to understand printing The performance of machine, the detected printed matter for color detection can be pre-designed, so as to apparent, accurate and easily examined It surveys.In the application, the arrangement for being detected color lump and color lump that printed matter is included is set previously according to the actual conditions of color roller Meter, after obtaining LAB image, gradually reads the LAB value of each color lump, that is, gets the LAB value of color lump in the LAB image, When carrying out the detection of color control item, corresponding color control item is printed out on being detected printed matter according to reference color control item, is detected printing The color control item printed out on product is properly termed as process color control item, and color detection area is selected as being detected process color control item on printed matter Region.

Each color when being detected using color control item, on each color lump in color detection area, that is, process color control item Block (being properly termed as process color control color lump) has a corresponding reference color control color lump on reference color control item, reads color When the LAB value of each color lump of detection zone, the LAB value of the corresponding reference color control color lump of the color lump can be read simultaneously, and is counted The difference between the LAB value of the color lump (i.e. process color control color lump) and the LAB value of reference color control color lump is calculated, institute is just obtained State the color difference of color lump.It can also read in LAB image after the LAB value of color detection area whole color lump, calculate each color one by one The color difference of block.

After obtaining the color difference of each color lump, since each color lump and a black key are corresponding, thus color difference size can be passed through The performance of black key is investigated, the black key excessive to color difference is adjusted, and the color difference can also be used as color difference closed-loop control Feedback signal.

Fig. 2 is the flow diagram of another printed matter method for detecting color shown in one exemplary embodiment of the application, The method uses color control item, as shown in Figure 2, which comprises

Step S201 obtains the full width face multispectral image for being detected printed matter；

Step S202 obtains color detection area LAB image, the color detection area according to full width face multispectral image It presets；

Step S203 obtains the LAB value of color lump in the color detection area LAB image；

Step S204 calculates institute according to the LAB value of the LAB value and reference color control color lump corresponding with the color lump State the color difference of color lump in LAB image；

Step S205, ink key corresponding for the color lump judge whether the color difference is greater than or equal to the black key pair The color difference threshold answered；

Step S206 carries out overload alarm if the color difference is greater than or equal to the color difference threshold；

Step S207, ink key corresponding for the color lump show the corresponding color difference of the black key along the variation of time shaft Trend；

Step S208 shows the LAB value, the color difference and the corresponding black key mark of the color lump.

Wherein, step S201 to step S203 is identical to step S103 as step S101.

Wherein, each color lump has its corresponding black key, it can be arranged according to the actual conditions of black key in each ink key Independent color difference threshold.It is calculated in LAB image after the color difference of color lump, judges whether the color difference is greater than or equal to black key Color difference threshold can carry out overload alarm, if it is not, not alarming then if the color difference is greater than or equal to the color difference threshold. Alarm content can for prompt, some black key color difference transfinites or the ink key is needed to adjust or look into and be repaired, so as in real time to black key Performance is monitored.

In addition, every color detection for carrying out a detected printed matter, can record the corresponding color difference of black key, And show variation tendency of the color difference along time shaft.For example, some black key is successively recorded and is carried out to 300 detected printed matters The obtained color difference of color detection, and the corresponding color difference of black key is shown along time shaft, the chromatic aberration tendency chart of Mo Jian is obtained, is led to The performance change of Mo Jian can be more clearly understood by crossing the figure.

In the detection the color difference being calculated can be shown, and show correspondence with the LAB value of the current color lump of real-time display Black key mark, allow the user to observe the color change of each black key printing in real time.

Wherein, what the label of step S205 to step S208 did not limit three steps executes sequence.

In coloured control, using the method for detecting color of color control item provided by the embodiment of the present application, it is different from conventional Will test the detection method got ready in turn that instrument is contacted with printed matter, method provided by the embodiment of the present application not with printed matter Contact, directly obtains the LAB value of Se Kongtiao color detection area color lump, and calculate color lump color difference by establishing LAB image online, Precision and efficiency of detecting all greatly improves, and convenient for observing black keyness energy and black key performance change in real time.

Fig. 3 is a kind of flow diagram of printed matter method for detecting color shown in one exemplary embodiment of the application, such as Shown in Fig. 3, which comprises

Step S301 obtains the full width face multispectral image for being detected printed matter；

Step S302 obtains color detection area LAB image, the color detection area according to full width face multispectral image It presets；

Step S303 obtains the LAB value of the detection zone of colour cell in the color detection area LAB image, the detection zone Preset amount, the color for belonging to the detection zone of the same colour cell are identical；

Step S304, according to the color difference of colour cell described in the LAB value and preset standard formwork calculation.

Wherein, step S301 to step S302 is identical to step S102 as step S101.

The identical region division of color in color detection area is defined as a colour cell, each colour cell is divided into multiple detections Area, the preset amount of the detection zone, the size of the detection zone can color lump size corresponding with black key it is identical, with side Just monitoring can be carried out to black keyness.The size of the detection zone may be the multiple of color lump size.The smaller inspection of detection zone It is higher to survey precision, but for convenient for identification, it is preferable that detection zone is greater than 5*5 pixel.

The LAB value for reading the detection zone of each colour cell, according to colour cell described in the LAB value and preset standard formwork calculation Color difference, comprising:

(a1) the standard LAB value of color lump corresponding with the detection zone in the preset standard template is obtained；

(a2) according to the LAB value and the standard LAB value, the color difference of the detection zone is calculated；

(a3) average value for calculating the color difference of all detection zones in the colour cell, obtains the color difference of the colour cell.

The preset standard template is established according to the content of printed matter, can print multiple printed matters in advance, and obtain this Then the LAB image of a little printed matters obtains LAB value to wherein identical color lump, and seeks the mean value of these LAB values, with described LAB value of the mean value as identical color lump in preset standard template, thus obtains preset standard template, or be customized by the user pre- If standard form.Then based on the LAB value of color lump, according to the size of preset detection zone, available preset standard mould The LAB value of the detection zone of colour cell in plate.When calculating the color difference of colour cell, to the LAB value of the detection zone read, accordingly read One corresponding (when detection zone size is equal to color lump size) of detection zone described in preset standard template or multiple (detection zone sizes When for color lump size multiple) the standard LAB value of color lump.When detection zone size is equal to color lump size, the LAB value and institute are calculated The difference for stating standard LAB value obtains the color difference of the detection zone.When detection zone size is the multiple of color lump size, to reading To the standard LAB value of color lump of preset standard template take mean value, obtain corresponding with the detection zone in preset standard template Detection zone standard LAB value, then calculates the difference of the LAB value and the detection zone LAB value, obtains the color of the detection zone Then difference calculates the average value of the color difference of all detection zones in the colour cell, obtain the color difference of the colour cell.

Color control item, which is suitable for offset machine, narrow scope of application, and the selection of color control item, has specific aim, lacks spirit Activity.Method for detecting color provided by the present embodiment does not need color control item, directly according to the content of detected printed matter come into Row color detection has wider array of applicability and higher efficiency.

Fig. 4 is the flow diagram of another printed matter method for detecting color shown in one exemplary embodiment of the application, As shown in Figure 4, which comprises

Step S401 obtains the full width face multispectral image for being detected printed matter；

Step S402 obtains color detection area LAB image, the color detection area according to full width face multispectral image It presets；

Step S403 obtains the LAB value of the detection zone of colour cell in the color detection area LAB image, the detection zone Preset amount, the color for belonging to the detection zone of the same colour cell are identical；

Step S404, according to the color difference of colour cell described in the LAB value and preset standard formwork calculation；

Step S405, judges whether the color difference of the colour cell is greater than or equal to corresponding color difference threshold；

Step S406 carries out overload alarm if the color difference is greater than or equal to the color difference threshold.

Wherein, since different colour cell colors are different, each colour cell can be set independent color difference threshold, be calculated After the color difference of colour cell, judge whether the color difference is greater than or equal to the color difference threshold, if so, overload alarm is carried out, if it is not, It does not alarm then.Alarm content can be real so as to carry out to colour cell color printing situation to prompt some colour cell color difference to transfinite When monitor.

Step S407 shows color difference scatter diagram.

Wherein, the display color difference scatter diagram may include: to show the distribution map of the colour cell, and in the distribution map It is upper to show the corresponding color difference of each colour cell；Alternatively, showing the corresponding color difference of each colour cell on colour cell area coordinate figure.

Fig. 5 is a color difference scatter diagram example, is colour cell coordinates regional, the cross represented by the transverse and longitudinal coordinate axis of the left side Fig. 5 Ordinate expression is the transverse and longitudinal number in colour cell region, each colour cell corresponding position on colour cell coordinates regional, with a mark The position of colour cell can indicate value of chromatism by each point, or point is set as to operate, after user clicks the point in figure, Color difference value list of the pop-up on the right of Fig. 5, user can check the details of value of chromatism by color difference value list.Value of chromatism column In table, Δ E=sqrt (Δ L²+ΔA²+ΔB²), wherein sqrt indicates extracting operation.It should be noted that the color difference of display dissipates Butut, for the currently detected corresponding color difference scatter diagram of printed matter.

Step S408 shows related colour color difference scatter diagram.

Wherein, the display related colour color difference scatter diagram, comprising:

(b1) it obtains user and operation is checked to the related colour of the colour cell, the related colour is the color for forming the colour cell Original blend together color；

(b2) check that operation shows the corresponding related colour of the colour cell according to the related colour；

(b3) the related colour selection operation of user is obtained；

(b4) corresponding related colour color difference scatter diagram is shown according to the related colour selection operation.

In printed matter, some color may be to be formed by other colors such as CMYK (green, pinkish red, yellow, black) colour mixture, Middle CMYK is known as the related colour (also known as original to blend together color) of some color.The color difference of some color is when something goes wrong, it is possible to It is because the original color that blendes together of the color there is a problem.For the reason of more accurately color difference occurs for position color, Jin Ergeng Printing machine state is accurately adjusted, the embodiment of the present application provides related colour color difference scatter diagram display function.Specifically, in a kind of reality It applies in mode, user can carry out related colour and check operation when checking color difference scatter diagram, such as click table on color difference scatter diagram Show that the point of colour cell, or the related colour clicked beside the point check that button etc., related colour color difference scatter diagram display unit are obtaining It gets after the related colour checks operation, display forms the related colour of the colour cell corresponding color, and the display can be for by phase It closes color and is shown as list or option button, then user selects the related colour to be checked, and related colour selection is carried out on interface Operation, such as some related colour option is clicked, then related colour color difference scatter diagram display unit shows related colour color difference scatter diagram, Namely show the color difference scatter diagram of the related colour selected.

It should be noted that the display of related colour color difference scatter diagram is not limited to the behaviour by user on color difference scatter diagram Work just can be carried out, and related colour color difference scatter diagram display operation UI (User can also be arranged at the interface of other display colors Interface, user interface), related colour color difference scatter diagram is checked convenient for user.

Fig. 6 is the flow diagram of another printed matter method for detecting color shown in one exemplary embodiment of the application, As shown in Figure 6, which comprises

Step S601 obtains the full width face multispectral image for being detected printed matter；

Step S602 obtains color detection area LAB image, the color detection area according to full width face multispectral image It presets；

Step S603 obtains the LAB value of the detection zone of colour cell in the color detection area LAB image, the detection zone Preset amount, the color for belonging to the detection zone of the same colour cell are identical；

Step S604, according to the color difference of colour cell described in the LAB value and preset standard formwork calculation.

Step S605, judges whether the color difference of the colour cell is greater than or equal to corresponding color difference threshold；

Step S606 carries out overload alarm if the color difference is greater than or equal to the color difference threshold.

Step S607 shows color difference tendency chart.

The display color difference tendency chart, comprising: show the same colour cell through the resulting color difference of repeated detection along time shaft Trend chart, the repeated detection are the detection to multiple detected printed matters.

Wherein, record detects the color difference of obtained same colour cell every time, and recorded colour cell color is then shown along time shaft Difference obtains the color difference tendency chart of the colour cell.The corresponding color difference tendency chart of each colour cell.By color difference tendency chart, user can be with Intuitively check the fluctuation of the printing effect of some color of printed matter whithin a period of time.Fig. 7 is a color difference tendency chart example, figure Middle abscissa indicates the time, and ordinate indicates the value of chromatism of a certain colour cell.Multiple colour cells have multiple color difference tendency charts, Ke Yitong When all show, can also show the tendency chart of currently detected colour cell, or provide colour cell tendency chart operation display interface, by User operates, to select to show the tendency chart of which colour cell.

Fig. 8 is the flow diagram of another printed matter method for detecting color shown in one exemplary embodiment of the application, As shown in Figure 8, which comprises

Step S801 obtains the full width face multispectral image for being detected printed matter；

Step S802 obtains color detection area LAB image, the color detection area according to full width face multispectral image It presets；

Step S803 obtains the LAB value of the detection zone of colour cell in the color detection area LAB image, the detection zone Preset amount, the color for belonging to the detection zone of the same colour cell are identical；

Step S804, according to the color difference of colour cell described in the LAB value and preset standard formwork calculation；

Step S805 calculates colour cell uniformity color difference.

The calculating colour cell uniformity color difference, comprising:

(c1) the first average value of the color difference of same colour cell in all left Xiao Zhangs for being detected printed matter is calculated, and is calculated It is detected the second average value of the color difference of same colour cell in all right Xiao Zhangs of printed matter；

(c2) difference between first average value and second average value is calculated, the colour cell uniformity color is obtained Difference.

For the same colour cell, the difference of color roller or so pressure is likely to result in the color of printed matter left Xiao Zhang and right Xiao Zhang Situation has differences, that is, between left Xiao Zhang and right Xiao Zhang unevenly.For some colour cell, the colour cell uniformity color difference, The mean value (the first mean value) for referring to the color difference of the colour cell in all left Xiao Zhangs, the mean value with the color difference of the colour cell in all right Xiao Zhangs The difference of (the second mean value).

Step S806 shows colour cell uniformity color difference scatter diagram.

The display colour cell uniformity color difference scatter diagram, comprising: show the distribution map of the colour cell, and in the distribution map It is upper to show the corresponding colour cell uniformity color difference of each colour cell；Alternatively, showing that each colour cell is corresponding on colour cell area coordinate figure Colour cell uniformity color difference.

It is similar with display colour cell color difference scatter diagram, colour cell coordinates regional can be indicated with transverse and longitudinal coordinate axis, each colour cell exists A corresponding mark on colour cell coordinates regional, can indicate value of chromatism, or setting the mark to can by the mark Operation after user clicks the mark in figure, pops up colour cell uniformity color difference scatter diagram, and the colour cell uniformity color difference of display is spread Figure, for the currently detected corresponding color difference scatter diagram of printed matter.By colour cell uniformity color difference scatter diagram, user can be intuitively square Just color roller or so pressure is checked with the presence or absence of non-uniform situation, to adjust to color roller.

Step S807 shows colour cell uniformity color difference tendency chart.

The display colour cell uniformity color difference tendency chart, comprising: show the same colour cell through the resulting colour cell of repeated detection For uniformity color difference along the trend chart of time shaft, the repeated detection is the detection to multiple detected printed matters.

Similar with display color difference tendency chart, colour cell uniformity color difference tendency chart is also same colour cell when recording each detection Then uniformity color difference shows recorded uniformity color difference along time shaft, obtain the uniformity color difference tendency chart of the colour cell.Often The corresponding uniformity color difference tendency chart of a colour cell.Colour cell uniformity color difference tendency chart can help user to investigate printing machine color roller The case where left and right pressure change.

Fig. 9 is the flow diagram of another printed matter method for detecting color shown in one exemplary embodiment of the application, As shown in Figure 9, which comprises

Step S901 obtains the full width face multispectral image for being detected printed matter；

Step S902 obtains color detection area LAB image, the color detection area according to full width face multispectral image It presets；

Step S903 judges whether there is color control item；

Step S904 obtains process color control color lump in the color detection area LAB image when there are color control LAB value, and,

Step S905 calculates institute according to the LAB value of the LAB value and reference color control color lump corresponding with the color lump State the color difference of color lump in LAB image；

Step S906 obtains the detection zone of colour cell in the color detection area LAB image when color control is not present LAB value, the preset amount of the detection zone, the color for belonging to the detection zone of the same colour cell is identical, and,

Step S907, according to the color difference of colour cell described in the LAB value and preset standard formwork calculation.

When there are color control, color detection is carried out using color control item, step S901 to S902 can refer to step S101 is identical to step S102, and step S904 to step S905 can be identical to step S104 with reference to step S103.

It is direct that color detection, step S906 to step are carried out according to the content for being detected printed matter when color control is not present Rapid S907 is identical to step S304 as step S303.

For it is some requirement preferentially use color control the case where, the present embodiment can be convenient in coloured control item and no color Color detection is neatly carried out when control.

By the description of above embodiment of the method, it is apparent to those skilled in the art that the application can Realize by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases the former It is more preferably embodiment.Based on this understanding, the technical solution of the application substantially makes tribute to the prior art in other words The part offered can be embodied in the form of software products, and be stored in a storage medium, including some instructions to So that a smart machine executes all or part of the steps of each embodiment the method for the application.And storage medium above-mentioned Including: that read-only memory (ROM), random access memory (RAM), magnetic or disk etc. are various can store data and program The medium of code.

Figure 10 is a kind of structural schematic diagram of printed matter color detection means shown in one exemplary embodiment of the application.Such as Shown in Figure 10, described device includes:

Full width face multispectral image acquiring unit U1001, for obtaining the full width face multispectral image of detected printed matter；

LAB image acquisition unit U1002, for obtaining color detection area LAB figure according to full width face multispectral image Picture, the color detection area are preset；

LAB value acquiring unit U1003, for obtaining the LAB value of color lump in the color detection area LAB image；

Colorimetry unit U1004, for according to the LAB value and reference color control color lump corresponding with the color lump LAB value calculates the color difference of color lump in the LAB image.

Wherein, the LAB image acquisition unit may include:

Figure 11 is a kind of structural schematic diagram of printed matter color detection means shown in one exemplary embodiment of the application.Such as Shown in Figure 11, described device includes:

Full width face multispectral image acquiring unit U1101, for obtaining the full width face multispectral image of detected printed matter；

LAB image acquisition unit U1102, for obtaining color detection area LAB figure according to full width face multispectral image Picture, the color detection area are preset；

Detection zone LAB value acquiring unit U1103, for obtaining the detection zone of colour cell in the color detection area LAB image LAB value, the preset amount of the detection zone, the color for belonging to the detection zone of the same colour cell is identical；

Colour cell Colorimetry unit U1104, the color for the colour cell according to the LAB value and preset standard formwork calculation Difference.

Wherein, the LAB image acquisition unit may include:

Wherein, the colour cell Colorimetry unit may include:

Figure 12 is the structural schematic diagram of another printed matter color detection means shown in one exemplary embodiment of the application. As shown in figure 12, described device includes:

Full width face multispectral image acquiring unit U1201, for obtaining the full width face multispectral image of detected printed matter；

LAB image acquisition unit U1202, for obtaining color detection area LAB figure according to full width face multispectral image Picture, the color detection area are preset；

Detection zone LAB value acquiring unit U1203, for obtaining the detection zone of colour cell in the color detection area LAB image LAB value, the preset amount of the detection zone, the color for belonging to the detection zone of the same colour cell is identical；

Colour cell Colorimetry unit U1204, the color for the colour cell according to the LAB value and preset standard formwork calculation Difference.

Judging unit U1205, for judging whether the color difference of the colour cell is greater than or equal to corresponding color difference threshold；

Alarm unit U1206 carries out overload alarm if being greater than or equal to the color difference threshold for the color difference；

Color difference scatter diagram display unit U1207, the color difference scatter diagram display unit, for showing the distribution of the colour cell Figure, and the corresponding color difference of each colour cell is shown on the distribution map；Alternatively, each for being shown on colour cell area coordinate figure The corresponding color difference of colour cell.

Related colour color difference scatter diagram display unit U1208, the related colour color difference scatter diagram display unit, comprising:

Wherein, the LAB image acquisition unit may include:

Figure 13 is the structural schematic diagram of another printed matter color detection means shown in one exemplary embodiment of the application. As shown in figure 13, described device includes:

Full width face multispectral image acquiring unit U1301, for obtaining the full width face multispectral image of detected printed matter；

LAB image acquisition unit U1302, for obtaining color detection area LAB figure according to full width face multispectral image Picture, the color detection area are preset；

Detection zone LAB value acquiring unit U1303, for obtaining the detection zone of colour cell in the color detection area LAB image LAB value, the preset amount of the detection zone, the color for belonging to the detection zone of the same colour cell is identical；

Colour cell Colorimetry unit U1304, the color for the colour cell according to the LAB value and preset standard formwork calculation Difference；

Judging unit U1305, for judging whether the color difference of the colour cell is greater than or equal to corresponding color difference threshold；

Alarm unit U1306 carries out overload alarm if being greater than or equal to the color difference threshold for the color difference.

Color difference tendency chart display unit U1307, the color difference tendency chart unit, for showing that the same colour cell is repeatedly examined Resulting color difference is surveyed along the trend chart of time shaft, the repeated detection is the detection to multiple detected printed matters.

Wherein, the LAB image acquisition unit may include:

Figure 14 is the structural schematic diagram of another printed matter color detection means shown in one exemplary embodiment of the application. As shown in figure 14, described device includes:

Full width face multispectral image acquiring unit U1401, for obtaining the full width face multispectral image of detected printed matter；

LAB image acquisition unit U1402, for obtaining color detection area LAB figure according to full width face multispectral image Picture, the color detection area are preset；

Detection zone LAB value acquiring unit U1403, for obtaining the detection zone of colour cell in the color detection area LAB image LAB value, the preset amount of the detection zone, the color for belonging to the detection zone of the same colour cell is identical；

Colour cell Colorimetry unit U1404, the color for the colour cell according to the LAB value and preset standard formwork calculation Difference.

Colour cell uniformity Colorimetry unit U1405, the colour cell uniformity Colorimetry unit may include:

Colour cell uniformity color difference scatter diagram display unit U1406, the colour cell uniformity color difference scatter diagram display unit are used In the distribution map of the display colour cell, and the corresponding colour cell uniformity color difference of each colour cell is shown on the distribution map；Alternatively, For showing the corresponding colour cell uniformity color difference of each colour cell on colour cell area coordinate figure.

Colour cell uniformity color difference tendency chart display unit U1407, the colour cell uniformity color difference tendency chart display unit are used In the same colour cell of display through the resulting colour cell uniformity color difference of repeated detection along the trend chart of time shaft, the multiple inspection It surveys as the detection to multiple detected printed matters.

Wherein, the LAB image acquisition unit may include:

Figure 15 is the structural schematic diagram of another printed matter color detection means shown in one exemplary embodiment of the application. As shown in figure 15, described device includes:

Full width face multispectral image acquiring unit U1501, for obtaining the full width face multispectral image of detected printed matter；

LAB image acquisition unit U1502, for obtaining color detection area LAB figure according to full width face multispectral image Picture, the color detection area are preset；

Color control judging unit U1503, for judging whether there is color control item；

LAB value acquiring unit U1504, for when there are color control, obtaining color lump in the color detection area LAB image LAB value；

Colorimetry unit U1505, for when there are color control, according to the LAB value and corresponding with the color lump The LAB value of reference color control color lump calculates the color difference of color lump in the LAB image.

Detection zone LAB value acquiring unit U1506, for when color control is not present, obtaining the color detection area LAB figure The LAB value of the detection zone of colour cell, the preset amount of the detection zone belong to the color of the detection zone of the same colour cell as in It is identical；

Colour cell Colorimetry unit U1507 is used for when color control is not present, according to the LAB value and preset standard mould Plate calculates the color difference of the colour cell.

For convenience of description, it is divided into various units when description apparatus above with function to describe respectively.Certainly, implementing this The function of each unit can be realized in the same or multiple software and or hardware when application.

All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for device or For system embodiment, since it is substantially similar to the method embodiment, so describing fairly simple, related place is referring to method The part of embodiment illustrates.Apparatus and system embodiment described above is only schematical, wherein the conduct The unit of separate part description may or may not be physically separated, component shown as a unit can be or Person may not be physical unit, it can and it is in one place, or may be distributed over multiple network units.It can root According to actual need that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.Ordinary skill Personnel can understand and implement without creative efforts.

It should be noted that, in this document, the relational terms of such as " first " and " second " or the like are used merely to one A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it Between there are any this actual relationship or backwards.Moreover, the terms "include", "comprise" or its any other variant are intended to Cover non-exclusive inclusion, so that the process, method, device or the equipment that include a series of elements not only include those Element, but also including other elements that are not explicitly listed, or further include for this process, method, device or setting Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that There is also other identical elements in process, method, device or the equipment for including the element.

The above is only the specific embodiment of the application, is made skilled artisans appreciate that or realizing this Shen Please.Various modifications to these embodiments will be apparent to one skilled in the art, as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one The widest scope of cause.

Claims

1. a kind of printed matter method for detecting color characterized by comprising

Obtain the LAB value of the detection zone of colour cell in the color detection area LAB image, the preset amount of the detection zone, The color for belonging to the detection zone of the same colour cell is identical；

According to the color difference of colour cell described in the LAB value and preset standard formwork calculation；

It further include calculating colour cell uniformity color difference, the calculating colour cell uniformity color difference, comprising:

The first average value of the color difference of same colour cell in all left Xiao Zhangs for being detected printed matter is calculated, and calculates and is detected print Second average value of the color difference of same colour cell in all right Xiao Zhangs of brush product；

2. printed matter method for detecting color as described in claim 1, which is characterized in that according to the LAB value and preset standard The color difference of colour cell described in formwork calculation, comprising:

3. printed matter method for detecting color as described in claim 1, which is characterized in that further include display color difference scatter diagram, institute State display color difference scatter diagram, comprising:

4. printed matter method for detecting color as claimed in claim 3, which is characterized in that further include that display related colour color difference is spread Figure, the display related colour color difference scatter diagram, comprising:

It obtains user and operation is checked to the related colour of the colour cell, the related colour is to form the original of color of the colour cell to mix Quality；

Obtain the related colour selection operation of user；

5. printed matter method for detecting color as described in claim 1, which is characterized in that further include display color difference tendency chart, institute State display color difference tendency chart, comprising:

Show trend chart of the same colour cell through the resulting color difference of repeated detection along time shaft, the repeated detection is to more The detection of a detected printed matter.

6. printed matter method for detecting color as described in claim 1, which is characterized in that further include display colour cell uniformity color difference Scatter diagram, the display colour cell uniformity color difference scatter diagram, comprising:

It shows the distribution map of the colour cell, and shows the corresponding colour cell uniformity color difference of each colour cell on the distribution map；Or Person,

7. printed matter method for detecting color as described in claim 1, which is characterized in that further include display colour cell uniformity color difference Tendency chart, the display colour cell uniformity color difference tendency chart, comprising:

Show trend chart of the same colour cell through the resulting colour cell uniformity color difference of repeated detection along time shaft, it is described multiple It is detected as the detection to multiple detected printed matters.

8. such as the described in any item printed matter method for detecting color of claim 5 to 7, which is characterized in that described according to described complete Breadth multispectral image obtains color detection area LAB image, comprising:

According to the positioning core zone location color detection area；

9. a kind of printed matter method for detecting color characterized by comprising

Judge whether there is color control item；

When there are color control, following steps are executed:

The LAB value of process color control color lump in the color detection area LAB image is obtained, and,

According to the LAB value of the LAB value and reference color control color lump corresponding with the color lump, color in the LAB image is calculated The color difference of block；

When color control is not present, following steps are executed:

The LAB value of the detection zone of colour cell in the color detection area LAB image is obtained, the color detection area is preset, and is belonged to It is identical in the color of the detection zone of the same colour cell, and,

10. a kind of printed matter color detection means characterized by comprising

LAB image acquisition unit, for obtaining color detection area LAB image, the face according to full width face multispectral image Color detection zone is preset；

Detection zone LAB value acquiring unit, for obtaining the LAB value of the detection zone of colour cell in the color detection area LAB image, institute The preset amount for stating detection zone, the color for belonging to the detection zone of the same colour cell are identical；

Colour cell Colorimetry unit, the color difference for the colour cell according to the LAB value and preset standard formwork calculation；

It further include colour cell uniformity Colorimetry unit, the colour cell uniformity Colorimetry unit, comprising:

First mean value calculation module, the first of the color difference of same colour cell in all left Xiao Zhangs for calculating detected printed matter Average value；

Second mean value calculation module, the second of the color difference of same colour cell in all right Xiao Zhangs for calculating detected printed matter Average value；

Difference calculating module obtains the color for calculating the difference between first average value and second average value Group uniformity color difference.

11. printed matter color detection means as claimed in claim 10, which is characterized in that the colour cell Colorimetry unit, Include:

Standard LAB value obtains module, for obtaining the standard of color lump corresponding with the detection zone in the preset standard template LAB value；

Detection zone Colorimetry module, for calculating the color difference of the detection zone according to the LAB value and the standard LAB value；

Color difference mean value calculation module obtains the color for calculating the average value of the color difference of all detection zones in the colour cell The color difference of group.

12. printed matter color detection means as claimed in claim 10, which is characterized in that further include that the display of color difference scatter diagram is single Member, the color difference scatter diagram display unit for showing the distribution map of the colour cell, and show each color on the distribution map The corresponding color difference of group；Alternatively, for showing the corresponding color difference of each colour cell on colour cell area coordinate figure.

13. printed matter color detection means as claimed in claim 10, which is characterized in that further include related colour color difference scatter diagram Display unit, the related colour color difference scatter diagram display unit, comprising:

Related colour checks module, checks operation to the related colour of the colour cell for obtaining user, the related colour is composition institute It states the original of the color of colour cell and blendes together color；

Related colour option display module, for checking that operation shows the corresponding related color sorting of the colour cell according to the related colour ?；

Related colour color difference scatter diagram display module, for showing that corresponding related colour color difference dissipates according to the related colour selection operation Butut.

14. printed matter color detection means as claimed in claim 10, which is characterized in that further include that the display of color difference tendency chart is single Member, the color difference tendency chart unit, for showing that the same colour cell becomes through the resulting color difference of repeated detection along the variation of time shaft Gesture figure, the repeated detection are the detection to multiple detected printed matters.

15. printed matter color detection means as claimed in claim 10, which is characterized in that further include that colour cell uniformity color difference dissipates Butut display unit, the colour cell uniformity color difference scatter diagram display unit, for showing the distribution map of the colour cell, and in institute It states and shows the corresponding colour cell uniformity color difference of each colour cell on distribution map；Alternatively, each for being shown on colour cell area coordinate figure The corresponding colour cell uniformity color difference of a colour cell.

16. printed matter color detection means as claimed in claim 10, which is characterized in that further include that colour cell uniformity color difference becomes Gesture figure display unit, the colour cell uniformity color difference tendency chart display unit, for showing the same colour cell through repeated detection institute For the colour cell uniformity color difference obtained along the trend chart of time shaft, the repeated detection is the inspection to multiple detected printed matters It surveys.

17. such as the described in any item printed matter color detection means of claim 10 to 14, which is characterized in that the LAB image Acquiring unit, comprising:

18. a kind of printed matter color detection means characterized by comprising

Color control judging unit, for judging whether there is color control item；

LAB value acquiring unit, for when there are color control, obtaining the LAB value of color lump in the color detection area LAB image；

Colorimetry unit, for when there are color control, according to the LAB value and reference color control item corresponding with the color lump The LAB value of color lump calculates the color difference of color lump in the LAB image；

Detection zone LAB value acquiring unit, for obtaining colour cell in the color detection area LAB image when color control is not present Detection zone LAB value, the preset amount of the detection zone, the color for belonging to the detection zone of the same colour cell is identical；

Colour cell Colorimetry unit is used for when color control is not present, according to the LAB value and preset standard formwork calculation The color difference of colour cell；