CN108182677A - To version detection method, device and computer readable storage medium before print - Google Patents
To version detection method, device and computer readable storage medium before print Download PDFInfo
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- CN108182677A CN108182677A CN201711429843.3A CN201711429843A CN108182677A CN 108182677 A CN108182677 A CN 108182677A CN 201711429843 A CN201711429843 A CN 201711429843A CN 108182677 A CN108182677 A CN 108182677A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/30—Determination of transform parameters for the alignment of images, i.e. image registration
- G06T7/33—Determination of transform parameters for the alignment of images, i.e. image registration using feature-based methods
- G06T7/337—Determination of transform parameters for the alignment of images, i.e. image registration using feature-based methods involving reference images or patches
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30168—Image quality inspection
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Abstract
An embodiment of the present invention provides before a kind of print to version detection method, device and computer readable storage medium, applied to printing technology.Including：Determine standard picture and multiple position correspondences of image to be detected, described image to be detected is the image after layout；According to the multiple position correspondence, the position correspondence set of the multiple regions of described image to be detected is determined respectively；According to the multiple regions position correspondence set of described image to be detected, the registration mapping relations of the multiple regions of described image to be detected are determined respectively；According to the registration mapping relations of the multiple regions of described image to be detected, it is registrated the multiple regions of described image to be detected, image to be detected after being registrated respectively；According to the structure of image to be detected after registration and the structure of standard picture, the difference of two images is evaluated.Reduce the situation of layout file picture and text missing, reduce cost.
Description
【Technical field】
The present invention relates to before printing technology more particularly to a kind of print to version detection method, device and computer-readable
Storage medium.
【Background technology】
In each cumbersome technological process of printing, mark of the manufacturer firstly the need of client's offer based on oneself is often printed
Quasi- printed text (electronic edition normative document) carries out corresponding editor and modification, finally confirms through client, and signature is agreed to according to this
File carries out the layout of big electronic document, finally (it is straight to make off line into line raster processing, final publish on the basis of completing the manuscript
Connect plate-making (Computer-to-plate, CTP)).Cause in above-mentioned workflow publish defect may be in layout process
In, because during big version electronic document is combined into the small version file that client confirms, it is likely that the missing of picture and text can be caused,
According to the layout documenting CTP that picture and text lack, the increase of printing house's cost is caused, while also result in the waste of resource.
【Invention content】
In view of this, an embodiment of the present invention provides before a kind of print to version detection method, device and computer-readable storage
Medium, cost increase caused by solve the problems, such as prior art layout file picture and text missing.
On the one hand, an embodiment of the present invention provides before a kind of print to version detection method.Including：
Determine standard picture and multiple position correspondences of image to be detected, described image to be detected is the figure after layout
Picture；
According to the multiple position correspondence, determine that the position of the multiple regions of described image to be detected corresponds to respectively and close
Assembly is closed；
According to the multiple regions position correspondence set of described image to be detected, described image to be detected is determined respectively
The registration mapping relations of multiple regions；
According to the registration mapping relations of the multiple regions of described image to be detected, it is registrated the more of described image to be detected respectively
A region, image to be detected after being registrated；
According to the structure of image to be detected after registration and the structure of standard picture, the difference of two images is evaluated.
The aspect and any possible implementation manners as described above, it is further provided a kind of realization method,
The determining standard picture and multiple position correspondences of image to be detected include：
Determine multiple characteristic points in standard picture；
The multiple characteristic point is screened, obtains multiple positioning cores；
The multiple positioning core is determined respectively in the position of described image to be detected, obtains the multiple position and correspond to close
System.
The aspect and any possible implementation manners as described above, it is further provided a kind of realization method,
The position correspondence includes coordinate pair, and the coordinate pair includes positioning core in the coordinate of standard picture and treating
The coordinate of detection image position location.
The aspect and any possible implementation manners as described above, it is further provided a kind of realization method,
It is described to determine that the multiple positioning core includes in the position of described image to be detected respectively：
Predefined position range；
Respectively in the corresponding position range of the multiple positioning core, determine the multiple positioning core in the mapping to be checked
The position of picture.
The aspect and any possible implementation manners as described above, it is further provided a kind of realization method,
The position correspondence set of the multiple regions according to image to be detected determines described image to be detected respectively
The registration mapping relations of multiple regions include：
To the correspondence in the position correspondence set in the multiple region, it is weighted processing respectively, obtains more
The registration mapping relations in a region.
On the other hand, an embodiment of the present invention provides before a kind of print to version detection device.Including：
Determination unit, for determining multiple position correspondences of standard picture and image to be detected, the mapping to be checked
Picture is the image after layout；
The determination unit is additionally operable to, and according to the multiple position correspondence, determines described image to be detected respectively
The position correspondence set of multiple regions；
The determination unit is additionally operable to, according to the multiple regions position correspondence set of described image to be detected, difference
Determine the registration mapping relations of the multiple regions of described image to be detected；
Registration unit, for the registration mapping relations of the multiple regions according to described image to be detected, respectively described in registration
The multiple regions of image to be detected, image to be detected after being registrated；
Evaluation unit for the structure and the structure of standard picture according to image to be detected after registration, evaluates two images
Difference.
The aspect and any possible implementation manners as described above, it is further provided a kind of realization method,
The determining standard picture and multiple position correspondences of image to be detected include：
Determine multiple characteristic points in standard picture；
The multiple characteristic point is screened, obtains multiple positioning cores；
The multiple positioning core is determined respectively in the position of described image to be detected, obtains the multiple position and correspond to close
System.
The aspect and any possible implementation manners as described above, it is further provided a kind of realization method,
The position correspondence includes coordinate pair, and the coordinate pair includes positioning core in the coordinate of standard picture and treating
The coordinate of detection image position location.
The aspect and any possible implementation manners as described above, it is further provided a kind of realization method,
It is described to determine that the multiple positioning core includes in the position of described image to be detected respectively：
Predefined position range；
Respectively in the corresponding position range of the multiple positioning core, determine the multiple positioning core in the mapping to be checked
The position of picture.
On the other hand, an embodiment of the present invention provides a kind of computer readable storage medium, including computer-readable instruction,
When computer is read and performs the computer-readable instruction so that computer is performed as described in either side or various aspects
Method.
A technical solution in above-mentioned technical proposal has the advantages that：
Normative document and layout file are compared before print through the embodiment of the present invention, so as to can determine whether
The situation of picture and text missing, when there is picture and text missing, can correct, save the cost of printing house in time.
【Description of the drawings】
It in order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for this field
For those of ordinary skill, without creative efforts, other attached drawings are can also be obtained according to these attached drawings.
To version detection method flow diagram before a kind of print for the method that Fig. 1 is provided by the embodiment of the present invention；
To the functional block diagram of version detection device before the print that Fig. 2 is provided by the embodiment of the present invention.
【Specific embodiment】
For a better understanding of the technical solution of the present invention, the embodiment of the present invention is retouched in detail below in conjunction with the accompanying drawings
It states.
It will be appreciated that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its
Its embodiment, shall fall within the protection scope of the present invention.
The term used in embodiments of the present invention is only merely for the purpose of description specific embodiment, and is not intended to be limiting
The present invention.In the embodiment of the present invention and " one kind " of singulative used in the attached claims, " described " and "the"
It is also intended to including most forms, unless context clearly shows that other meanings.
Depending on linguistic context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determining " or " in response to detection ".Similarly, depending on linguistic context, phrase " if it is determined that " or " if detection
(condition or event of statement) " can be construed to " when determining " or " in response to determining " or " when the detection (condition of statement
Or event) when " or " in response to detecting (condition or event of statement) ".
It should be noted that the nouns of locality such as described " on ", " under " of the embodiment of the present invention, "left", "right" are with attached drawing
Shown angle should not be construed as the restriction to the embodiment of the present invention come what is be described.In addition within a context, it is also necessary to manage
Solution when mentioning an element and being formed on "above" or "below" another element, can not only be formed directly into another
A element " on " either " under " can also be indirectly formed by intermediary element another element " on " or " under ".
The problem of being lacked for the file after layout in the presence of the prior art and normative document picture and text, the embodiment of the present invention
Provide following resolving ideas：File (the paper after layout is compared by the normative document (papery or electronic document) that client provides
Matter or electronic document), timely the careless mistake that layout occurs is pointed out, the effective quality for controlling product.
Under the guiding of the thinking, this programme embodiment provides following feasible embodiment.
Embodiment one
To version detection method before a kind of print that the embodiment of the present invention provides.
Specifically, please referring to Fig.1, the flow of version detection method is illustrated before the print provided by the embodiment of the present invention
Figure, as shown in the figure, this method includes the following steps：
S110 determines standard picture and multiple position correspondences of image to be detected, and the image to be detected is after layout
Image.
Standard picture can be provided by client.The standard picture can be the scanned copy or electronics of paper document
File.
Image to be detected can be the file after layout.File after the layout can be the scanned copy of paper document,
It can be electronic document.
Each position correspondence includes a coordinate pair, and a coordinate pair includes seat of the positioning core in standard picture
Mark and the corresponding coordinate in image to be detected position location.
In one example, following step can be included by determining multiple position correspondences of standard picture and image to be detected
Suddenly：
Determine multiple characteristic points in standard picture；
Multiple characteristic points are screened, obtain multiple positioning cores；
Determine that multiple positioning cores in the position of image to be detected, obtain multiple position correspondences respectively.
Specifically, between the same content of different images, position is there are certain difference, in order to reach between image
It with effect, can first determine largely to position core (i.e. characteristic point), in the presence of largely positioning core, can realize figure
Mapping as between.
Have in the algorithm of image characteristic point extraction very much, including Harris angle points, FAST features, SURF features etc..
Preferably, using FAST feature extractions, because the algorithm has quickly extraction advantage.
But in the extraction of feature, a usual image can extract thousands of characteristic point, and characteristic point
Repeatability is also very high, can cause subsequent positioning work very slow in this way and slip up.Our inventive embodiments pass through to extraction
Characteristic point out is filtered, and the characteristic point of a large amount of repeatability is screened with the characteristic point for being gathered in same area,
Representative characteristic point is finally retained as positioning core.
It is enterprising in image to be detected using the positioning core of standard picture after multiple positioning cores on standard picture is determined
Row positioning nuclear location obtains each positioning core corresponding coordinate to be detected, and can be obtained by different positioning verifications in this way should
Coordinate points pair, for the registration of general image.
For example, the Region Matching used in the embodiment of the present invention, in detection image, the approximate region of corresponding positioning core is determined
Position.Specifically it may include steps of：
Predefined position range；The predefined position range is the approximate region for positioning core.
Respectively in the corresponding position range of multiple positioning cores, determine multiple positioning cores in the position of image to be detected.
Each positioning core, there is domain of the existence substantially in corresponding detection image, by positioning core approximate region
Position positioning, can significantly reduction image positioning time, can also avoid it is unnecessary interference accurately navigate to positioning
The position of core.
S120 according to multiple position correspondences, determines the position correspondence of the multiple regions of image to be detected respectively
Set.
The embodiment of the present invention carries out multidomain treat-ment to image to be detected, and different subregions corresponds to different position relationship collection
It closes.
The partitioned mode to image to be detected can predefine.
S130 according to the multiple regions position correspondence set of image to be detected, determines the more of image to be detected respectively
The registration mapping relations in a region.
In embodiments of the present invention, it in the different regions of image to be detected, is corresponded to and closed according to the corresponding position in the region
Assembly is closed, and for position correspondence weighting processing different in the correspondence set of position, obtains the region and standard picture
The registration mapping relations of corresponding region.Above-mentioned calculating is all carried out to multiple regions, the registration mapping for respectively obtaining multiple regions is closed
System.
S140 according to the registration mapping relations of the multiple regions of image to be detected, is registrated the multiple of image to be detected respectively
Region, image to be detected after being registrated.
According to the registration mapping relations of multiple regions, image to be detected is registrated by region, it is to be checked after being registrated
Altimetric image.
S150 according to the structure of image to be detected after registration and the structure of standard picture, evaluates the difference of two images.
Wherein, the structure of image can be represented by image mean value with standard deviation as normalization data.
Image similarity the sum of brightness, contrast and structure three weighting between image are referred to as similarity.
It is registrated between image after work completion, evaluates the difference between two images, lacked to determine whether there is picture and text
It loses.
Specifically, can whether variant between image to judge by calculating structure between two images, it can solve
The erroneous judgement problem brought due to the difference of gray scale.
It is clear since the standard picture that in the technique of printing, client gives is typically be imaged out by scanner
Clear degree and smoothness are very limited.And image to be detected is typically polar plot, has a very high clarity, word and pattern it
Between excessively it is also very good.So the gray scale between standard picture and image to be detected is there is huge difference, however it is same
Image between the content of sample there are identical structure, that is, between pixel there is the same correlations.Pass through calculating
Correlation between image, both it is known that whether the structure between image is consistent, also with regard to that can show that two images whether there is
Difference.
Algorithm it is present during, by the process of convolution of window, carrying out real each window interior has a spline structure
So as to judge in image some position with the presence or absence of abnormal.Since the data of image are big, so calculation amount is also very big, in order to
This problem is solved, this programme employs GPU treatment technologies, can increase substantially the time of calculating.
It should be noted that terminal involved in the embodiment of the present invention can include but is not limited to personal computer
(Personal Computer, PC), personal digital assistant (Personal Digital Assistant, PDA), wireless handheld
Equipment, tablet computer (Tablet Computer), mobile phone, MP3 player, MP4 players etc..
It should be noted that the executive agent of S110~S150 can be that print is preceding to version detection device, which can position
In local terminal application or can also be the plug-in unit or Software Development Kit being located locally in the application of terminal
Functional units such as (Software Development Kit, SDK), the embodiment of the present invention is to this without being particularly limited to.
It is understood that application program (nativeApp) that the application can be mounted in terminal or may be used also
To be a web page program (webApp) of browser in terminal, the embodiment of the present invention is to this without limiting.
The technical solution of the embodiment of the present invention has the advantages that：
Normative document and layout file are compared before print through the embodiment of the present invention, so as to can determine whether
The situation of picture and text missing, when there is picture and text missing, can correct, save the cost of printing house in time.
Specifically, the embodiment of the present invention can make standard picture and image to be detected reach height by the registration of image
Co-factor propagation effectively solves the difference brought because of the deviation between image；Figure is evaluated by contrast images structure
Difference as between effectively solves the erroneous judgement brought because of the difference of gray scale between image.
Embodiment two
Version detection method, the embodiment of the present invention are further provided in realization before the print provided based on above-described embodiment one
State the device embodiment of each step and method in embodiment of the method.
It please refers to Fig.2, to the functional block diagram of version detection device before the print provided by the embodiment of the present invention.Such as Fig. 2
Shown, which includes：
Determination unit 201, it is described to be detected for determining multiple position correspondences of standard picture and image to be detected
Image is the image after layout；
The determination unit 201 is additionally operable to, and according to the multiple position correspondence, determines described image to be detected respectively
Multiple regions position correspondence set；
The determination unit 201 is additionally operable to, and according to the multiple regions position correspondence set of described image to be detected, is divided
Not Que Ding described image to be detected multiple regions registration mapping relations；
Registration unit 202 for the registration mapping relations of the multiple regions according to described image to be detected, is registrated institute respectively
The multiple regions of image to be detected are stated, image to be detected after being registrated；
Evaluation unit 203 for the structure and the structure of standard picture according to image to be detected after registration, evaluates two width figures
The difference of picture.
Optionally, the determination unit 201 is specifically used for：
Determine multiple characteristic points in standard picture；
The multiple characteristic point is screened, obtains multiple positioning cores；
The multiple positioning core is determined respectively in the position of described image to be detected, obtains the multiple position and correspond to close
System.
Optionally, the position correspondence includes coordinate pair, and the coordinate pair includes seat of the positioning core in standard picture
Mark and the coordinate in image to be detected position location.
Optionally, the determination unit 201 is specifically used for：
Predefined position range；
Respectively in the corresponding position range of the multiple positioning core, determine the multiple positioning core in the mapping to be checked
The position of picture.
Optionally, the determination unit 201 is specifically used for：
To the correspondence in the position correspondence set in the multiple region, it is weighted processing respectively, obtains more
The registration mapping relations in a region.
Method shown in FIG. 1 is able to carry out by each unit in this present embodiment, the part that the present embodiment is not described in detail,
It can refer to the related description to Fig. 1.
An embodiment of the present invention provides a kind of computer readable storage mediums.The computer readable storage medium includes calculating
Machine readable instruction, when computer is read and performs the computer-readable instruction so that computer is performed such as one institute of embodiment
The method stated.
The technical solution of the embodiment of the present invention has the advantages that：
Normative document and layout file are compared before print through the embodiment of the present invention, so as to can determine whether
The situation of picture and text missing, when there is picture and text missing, can correct, save the cost of printing house in time.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit can refer to the corresponding process in preceding method embodiment, and details are not described herein.
In several embodiments provided by the present invention, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of division of logic function can have other dividing mode in actual implementation, for example, multiple units or group
Part may be combined or can be integrated into another system or some features can be ignored or does not perform.Another point, it is shown
Or the mutual coupling, direct-coupling or communication connection discussed can be by some interfaces, device or unit it is indirect
Coupling or communication connection can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical unit, you can be located at a place or can also be distributed to multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
That each unit is individually physically present, can also two or more units integrate in a unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit realized in the form of SFU software functional unit, can be stored in one and computer-readable deposit
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, is used including some instructions so that a computer
It is each that device (can be personal computer, server or network equipment etc.) or processor (Processor) perform the present invention
The part steps of embodiment the method.And aforementioned storage medium includes：USB flash disk, mobile hard disk, read-only memory (Read-
Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disc or CD etc. it is various
The medium of program code can be stored.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God and any modification, equivalent substitution, improvement and etc. within principle, done, should be included within the scope of protection of the invention.
Claims (10)
1. to version detection method before a kind of print, which is characterized in that including：
Determine standard picture and multiple position correspondences of image to be detected, described image to be detected is the image after layout；
According to the multiple position correspondence, the position set of correspondences of the multiple regions of described image to be detected is determined respectively
It closes；
According to the multiple regions position correspondence set of described image to be detected, the multiple of described image to be detected are determined respectively
The registration mapping relations in region；
According to the registration mapping relations of the multiple regions of described image to be detected, it is registrated multiple areas of described image to be detected respectively
Domain, image to be detected after being registrated；
According to the structure of image to be detected after registration and the structure of standard picture, the difference of two images is evaluated.
2. according to the method described in claim 1, it is characterized in that, multiple positions of the determining standard picture and image to be detected
Correspondence is put to include：
Determine multiple characteristic points in standard picture；
The multiple characteristic point is screened, obtains multiple positioning cores；
Determine that the multiple positioning core in the position of described image to be detected, obtains the multiple position correspondence respectively.
3. according to the method described in claim 2, it is characterized in that, the position correspondence includes coordinate pair, the coordinate
To including positioning coordinate of the core in standard picture and the coordinate in image to be detected position location.
4. according to the method in claim 2 or 3, which is characterized in that described to determine the multiple positioning core described respectively
The position of image to be detected includes：
Predefined position range；
Respectively in the corresponding position range of the multiple positioning core, determine the multiple positioning core in described image to be detected
Position.
5. according to the method described in claim 1-3 any one, which is characterized in that multiple areas according to image to be detected
The position correspondence set in domain determines that the registration mapping relations of the multiple regions of described image to be detected include respectively：
To the correspondence in the position correspondence set in the multiple region, it is weighted processing respectively, obtains multiple areas
The registration mapping relations in domain.
6. to version detection device before a kind of print, which is characterized in that including：
Determination unit, for determining multiple position correspondences of standard picture and image to be detected, described image to be detected is
Image after layout；
The determination unit is additionally operable to, and according to the multiple position correspondence, determines the multiple of described image to be detected respectively
The position correspondence set in region；
The determination unit is additionally operable to, and according to the multiple regions position correspondence set of described image to be detected, is determined respectively
The registration mapping relations of the multiple regions of described image to be detected；
Registration unit for the registration mapping relations of the multiple regions according to described image to be detected, is registrated described to be checked respectively
The multiple regions of altimetric image, image to be detected after being registrated；
Evaluation unit for the structure and the structure of standard picture according to image to be detected after registration, evaluates the difference of two images
It is different.
7. device according to claim 6, which is characterized in that the determination unit is specifically used for：
Determine multiple characteristic points in standard picture；
The multiple characteristic point is screened, obtains multiple positioning cores；
Determine that the multiple positioning core in the position of described image to be detected, obtains the multiple position correspondence respectively.
8. device according to claim 7, which is characterized in that the position correspondence includes coordinate pair, the coordinate
To including positioning coordinate of the core in standard picture and the coordinate in image to be detected position location.
9. device according to claim 7 or 8, which is characterized in that the determination unit is specifically used for：
Predefined position range；
Respectively in the corresponding position range of the multiple positioning core, determine the multiple positioning core in described image to be detected
Position.
10. a kind of computer readable storage medium, including computer-readable instruction, when computer is read and performs the computer
During readable instruction so that computer performs the method as described in claim 1-5 any one.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112085707A (en) * | 2020-08-18 | 2020-12-15 | 北京华夏视科技术股份有限公司 | Printed matter color detection method, device, equipment and medium |
| CN114863147A (en) * | 2022-05-30 | 2022-08-05 | 中科芯云图像视觉技术(北京)有限公司 | Intelligent comparison method and system for large-version printed image and application of intelligent comparison system |
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