CN107424123A - A kind of moire fringes minimizing technology and device - Google Patents
A kind of moire fringes minimizing technology and device Download PDFInfo
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- CN107424123A CN107424123A CN201710196283.5A CN201710196283A CN107424123A CN 107424123 A CN107424123 A CN 107424123A CN 201710196283 A CN201710196283 A CN 201710196283A CN 107424123 A CN107424123 A CN 107424123A
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Abstract
The embodiment of the present invention, which provides a kind of moire fringes minimizing technology and device, methods described, to be included：Judge whether there are moire fringes in pending image；If there are moire fringes in image, pending image is converted to the spectrogram of frequency domain；Frequency is higher than the information of predetermined threshold value in filtered spectrum figure；Spectrogram after filtering is converted back into time domain.
Description
Technical field
The present invention relates to image processing field, more particularly to a kind of moire fringes minimizing technology and device.
Background technology
In digitized video, if there is the texture of fine groove in the object being taken, usually occur baffled such as water
The same striped of ripple and strange color, here it is moire fringes (moir é).The image either shot with advanced digital camera,
Or the image of scanning, it is possible to the phenomenon occur.When on object careful pattern (the braiding lines such as on fabric, or
On building very close to parallel line) with image-forming assembly on pattern overlap when, then may produce this phenomenon.
Still further aspect, when the electronic equipment such as digital camera, mobile phone televising or computer screen, because screen is to use
Scan line refreshes image, and electronic equipment is equally to catch image with horizontal scanning line, when the two frequency, angle it is close but not
When completely the same, High-frequency Interference can be produced, forms high-frequency stripe patterns noise, i.e. moire fringes.
In digitized video field, moire fringes are always masty problem.
The content of the invention
The embodiment of the present invention provides a kind of moire fringes minimizing technology and device, can remove rubbing in digitized video exactly
That line.
On the one hand, the embodiment of the present invention provides a kind of moire fringes minimizing technology, including：
Judge whether there are moire fringes in pending image；
If there are moire fringes in pending image, pending image is converted to the spectrogram of frequency domain；
Frequency is higher than the information of predetermined threshold value in filtered spectrum figure；
Spectrogram after filtering is converted back into time domain.
Alternatively, it is described to judge whether there are moire fringes to include in pending image：
Obtain the pixel corner result figure of pending image；
Angle point statistical value in the statistics angle point result figure of subregion；
If the ratio that region angle point statistical value exceedes the areal and region sum of predeterminable area angle point statistical threshold surpasses
Cross preset ratio, it is determined that there are moire fringes in pending image；Otherwise, it determines without moire fringes in pending image.
Alternatively, the pixel corner is and the discrepant pixel of left adjacent and upper neighbour.
Alternatively, the spectrogram that pending figure image is converted to frequency domain is included：
Pending image is carried out it is down-sampled, will be down-sampled after image be converted to the spectrogram of frequency domain；
Also include after spectrogram after filtering is converted back into time domain：
Up-sampling processing is carried out to the image for converting back time domain.
On the other hand, the embodiment of the present invention provides a kind of moire fringes removal device, including：
Judge module, for judging whether there is moire fringes in pending image；
First modular converter, during for there are moire fringes in the picture, pending image is converted to the spectrogram of frequency domain；
Filtering module, the information of predetermined threshold value is higher than for frequency in filtered spectrum figure；
Second modular converter, for the spectrogram after filtering to be converted back into time domain.
Alternatively, the determining module includes：
Acquisition submodule, for obtaining the pixel corner result figure of pending image；
Statistic submodule, the angle point statistical value in angle point result figure is counted for subregion；
Determination sub-module, for exceeding areal and the area of predeterminable area angle point statistical threshold in region angle point statistical value
When the ratio of domain sum exceedes preset ratio, determine there are moire fringes in pending image；Otherwise, it determines nothing is rubbed in pending image
That line.
Alternatively, the pixel corner is and the discrepant pixel of left adjacent and upper neighbour.
Alternatively, first modular converter be additionally operable to pending image carry out it is down-sampled, will be down-sampled after image
Be converted to the spectrogram of frequency domain；
Second modular converter, it is additionally operable to converting back the spectrogram after filtering into the image after time domain to converting back time domain
Carry out up-sampling processing.
A kind of moire fringes minimizing technology and device provided in an embodiment of the present invention, first determine whether have in pending image
Moire fringes are present, and when it is determined that having moire fringes in pending image, pending image are converted to the spectrogram of frequency domain, filters it
Medium-high frequency information, and the spectrogram after filtering is switched back into the image after time domain can obtain removal moire fringes.Due to the present invention
Whether the technical scheme that embodiment provides in pending image first to having moire fringes to be judged so that the removal of moire fringes
It is more accurate.
Brief description of the drawings
Fig. 1 is a kind of flow chart for moire fringes minimizing technology that one embodiment of the invention provides；
Determine whether rubbed in pending image in a kind of moire fringes minimizing technology that Fig. 2 positions one embodiment of the invention provides
The method flow diagram of your line；
Fig. 3-1 is pending image in a kind of moire fringes minimizing technology that one embodiment of the invention provides；
Fig. 3-2 is by after pending image binaryzation in a kind of moire fringes minimizing technology that one embodiment of the invention provides
Image；
Fig. 4 is pixel corner result figure in a kind of moire fringes minimizing technology that one embodiment of the invention provides；
Fig. 5 is the pixel corner result of regional area in a kind of moire fringes minimizing technology that one embodiment of the invention provides
Figure；
Fig. 6 is that the binary picture after moire fringes is removed in a kind of moire fringes minimizing technology that one embodiment of the invention provides；
Fig. 7 is a kind of flow chart for moire fringes minimizing technology that one embodiment of the invention provides；
Fig. 8 is a kind of structural representation for moire fringes removal device that one embodiment of the invention provides；
Fig. 9 is the structural representation of the determining module in a kind of moire fringes removal device that one embodiment of the invention provides；
And
Figure 10 is the hardware architecture diagram for the electronic equipment that one embodiment of the invention provides.
Embodiment
A kind of moire fringes minimizing technology and device provided in an embodiment of the present invention, first to whether being rubbed in pending image
You are judged line, and the removal for there is the image of moire fringes to carry out moire fringes so that the removal of moire fringes is more accurate.
Below in conjunction with the accompanying drawings, embodiments of the present invention and implementation process are elaborated.
Referring to Fig. 1, one embodiment of the invention provides a kind of moire fringes minimizing technology, including step 101- steps 104.
Step 101：Judge whether there are moire fringes in pending image, if then entering step 102；Otherwise we are terminated
Method.
Step 102：Pending image is converted to the spectrogram of frequency domain.
Step 103：Frequency is higher than the information of predetermined threshold value in filtered spectrum figure.
One time-domain image can be spectrogram and information lossless by frequency-domain transform.Moire fringes in time-domain image are general
It is corresponding with the spectrogram medium-high frequency information of frequency domain, if there is moire fringes in image, by filter out high-frequency information can by when
Moire fringes in area image remove.
In one embodiment of the invention, the predetermined threshold value can determine according to the highest frequency in spectrogram, such as described
Predetermined threshold value can be frequency domain spectrogram in highest frequency fmax70%, that is, filter out overfrequency more than fmax70%
Information.In practical application, the spectrogram that the predetermined threshold value can combine frequency domain is configured, and the application is not construed as limiting to this,
As long as the information of high-frequency region can be filtered out.
Step 104：Spectrogram after filtering is converted back into time domain.
After spectrogram after filtering is converted back to time domain, the time-domain image of moire fringes is just obtained removing.
As described in the background art, there are the electronic equipments such as texture or the digital camera phone of fine groove in the object being taken
When televising or computer screen, easily there is the image of moire fringes.Sometimes, it is simply thin without moire fringes in image
Section is relatively more, and moire fringes and details in time-domain image correspond to high-frequency information in the spectrogram of frequency domain, if in order to remove
Moire fringes, the high-frequency information of spectrogram is filtered in frequency domain without distinction, the time-domain image of no moire fringes can be caused
Details thicken.
The technical scheme that the embodiment of the present invention is provided, first judge pending image carrying out before processing to pending image
In whether there is moire fringes, when only determining really to have in pending image moire fringes, by filtering out the frequency in spectrogram
The moire fringes in pending image are removed higher than the information of predetermined threshold value, so that the removal of moire fringes is more accurate.
Referring to Fig. 2, in one embodiment of the invention, judge whether there are moire fringes to include step 1011 in pending image
To step 1013.
Step 1011：Obtain the pixel corner result figure of pending image.
Pixel corner result figure is needed by being scanned acquisition to the image after binaryzation.
If pending image is the image of non-binaryzation, then binary conversion treatment first can be carried out to pending image,
The pixel corner of the pending image after binaryzation is then scanned, obtains the pixel corner result figure of image.
Image binaryzation is most common most important processing means in computer assisted image processing, and two-value processing method is also very
It is more.The application is not construed as limiting to specific binarization method.Fig. 3-1 is the pending image signal that one embodiment of the invention provides
Figure, it is non-binary image, and Fig. 3-2 is the image after binaryzation corresponding to Fig. 3-1.
If pending image be binaryzation after image, if such as Fig. 3-2 is pending image, then can directly treat
The pixel corner in image is handled, obtains pixel corner result figure.
In the embodiment of the present invention, the pixel corner is and the discrepant pixel of left adjacent and upper neighbour.Even some picture
Vegetarian refreshments it is variant with its left adjacent and upper woods, then its pixel value is set to 255 (whites), and otherwise its pixel value is set to 0 (black).
Fig. 4 is the schematic diagram for the pixel corner result figure that one embodiment of the invention provides.
Step 1013：Region angle point statistical value in the statistical pixel angle point result figure of subregion.
Fig. 5 is the partially schematic of the region angle point statistical value in the statistical pixel angle point result figure of subregion of the embodiment of the present invention
Figure.In the embodiment of the present invention, pixel corner result figure is divided into multiple regions, and the angle point number in each region is the region
Angle point statistical value.Step 1014：If region angle point statistical value exceedes areal and the region of predeterminable area angle point statistical threshold
The ratio of sum exceedes preset ratio, it is determined that has moire fringes in pending image；Otherwise, it determines nothing mole in pending image
Line.
Angle point in the angle point figure of image without moire fringes can be few more many than there is the angle point of the image of moire fringes, because mole
Line itself can produce many angle points.Based on this, in the embodiment of the present invention, obtained regional angle point statistical value and area will be counted
Domain angle point statistical threshold is compared and recorded, if region angle point statistical value exceedes the region of predeterminable area angle point statistical threshold
Number and the ratio of region sum exceed preset ratio, for example, if more than 60%, just illustrate that the angle point in image is very more, really
There are moire fringes in its fixed corresponding pending image, otherwise just there is no moire fringes in pending image corresponding to it.
The threshold value that the region angle point statistical threshold is counted out for default region interior angle, the region angle point statistical threshold
It can be determined with the preset ratio according to actual conditions, this is not limited by the present invention.
In one embodiment of the invention, pending figure can be judged by angle point result figure to realize by various sorting algorithms
Seem no to have moire fringes.
Such as one in embodiment, gradient lifting decision tree can be used(Gradient Boosting Decision
Tree,GBDT)To be judged.Each dimension using regional statistical value as decision tree, since summit, is judged with this
Whether each dimension is both greater than predetermined threshold value.All it is big if all of node or more than the result of the node of preset percentage
In predetermined threshold value, then can then determine there are moire fringes in pending image corresponding to angle point result figure.
After it is determined that there are moire fringes in pending image, place can be treated according to the step 102-104 of embodiment illustrated in fig. 1
Reason image, which continues with, removes moire fringes therein.
Fig. 6 is that the method provided according to embodiments of the present invention the image in Fig. 3-2 removes the image after moire fringes.With
Fig. 3-2 is compared, and is removed the image after moire fringes and is become apparent from, and is easy to carry out subsequent treatment to the image.
Referring to Fig. 7, one embodiment of the invention provides a kind of moire fringes minimizing technology, including step 701 is to step 706.
Step 701：Judge whether there are moire fringes in pending image, if then performing step 702；Otherwise we are terminated
Method.
Step 702：Pending image is carried out down-sampled.
Step 703：Image after will be down-sampled is converted to the spectrogram of frequency domain.
Down-sampled is the process for the sample rate for reducing signal specific, and the embodiment of the present invention is big by down-sampled reduction data
It is small.The down-sampled factor (conventional to represent that symbol is M) will be generally above 1 integer or rational.This factor expression sampling week
Phase becomes original several times big.Size of data is reduced due to down-sampled, so carrying out time domain to frequency to the image after down-sampled
The conversion in domain can be greatly enhanced conversion efficiency.
Step 704：Frequency is higher than the information of predetermined threshold value in filtered spectrum figure.
Step 705：Spectrogram after filtering is converted back into time domain.
Step 706：Up-sampling processing is carried out to the image for converting back time domain.
Due to having carried out down-sampled processing to pending image before, so the moire fringes in image is removed in frequency domain
Afterwards, in order to go back original image, it is necessary to carry out up-sampling processing to the image for converting back time domain.The down-sampled factor before may be referred to
The corresponding up-sampling factor is set.The example down-sampled sampling period as in the previous becomes original M times, then corresponding up-sampling
Cycle is changed into original 1/M, can so go back original image.
Moire fringes minimizing technology provided in an embodiment of the present invention, after it is determined that having moire fringes in pending image, further
It is down-sampled to the progress of pending image, to the image of sampling is carried out into frequency-domain transform, then filter high-frequency information therein and remove
Moire fringes, reconvert are returned time domain and up-sampled, and obtain the image after removing moire fringes, because carry out frequency-domain transform is to adopt
The image of sample, considerably reduce the data volume for needing frequency-domain transform so that the removal of moire fringes is quicker.
Corresponding with the moire fringes minimizing technology, the application is also provided for moire fringes removal device, referring to Fig. 8,
One embodiment of the invention, which provides a kind of moire fringes removal device, to be included：
Judge module 801, for judging whether there is moire fringes in pending image；
First modular converter 802, during for there are moire fringes in the picture, pending image is converted to the frequency spectrum of frequency domain
Figure；
Filtering module 802, the information of predetermined threshold value is higher than for frequency in filtered spectrum figure；
Second modular converter 804, for the spectrogram after filtering to be converted back into time domain.
In the present embodiment, simple description is only carried out to described device embodiment, related part refers to above-mentioned rub
The embodiment of your line minimizing technology.
The moire fringes removal device that the embodiment of the present invention is provided, first judge to wait to locate carrying out before processing to pending image
It whether there is moire fringes in reason image, when only determining really to have in pending image moire fringes, by filtering out in spectrogram
Frequency remove the moire fringes in pending image higher than the information of predetermined threshold value so that the removal of moire fringes is more accurate
Really.
Alternatively, referring to Fig. 9, in one embodiment of the invention, the judge module 801 includes：
Word modules 8011 are obtained, for obtaining the pixel corner result figure of pending image；
Statistic submodule 8012, the angle point statistical value in angle point result figure is counted for subregion；
Determination sub-module 8013, in the region for image after binarization, angle point statistical value exceedes predeterminable area angle
The ratio of the areal of point statistical threshold and region sum exceedes preset ratio, determines there are moire fringes in pending image；It is no
Then, determine in pending image without moire fringes.
After it is determined that having moire fringes in pending image, the moire fringes removal device can continue with described pending
Image removes moire fringes therein.
Alternatively, in an of the invention example, first modular converter 802 is additionally operable to carry out drop to pending image to adopt
Sample, will be down-sampled after image be converted to the spectrogram of frequency domain；
Second modular converter 804, it is additionally operable to convert back the spectrogram after filtering after time domain to converting back time domain
Image carries out up-sampling processing.
Moire fringes removal device provided in an embodiment of the present invention, after it is determined that having moire fringes in pending image, further
It is down-sampled to the progress of pending image, to the image of sampling is carried out into frequency-domain transform, then filter high-frequency information therein and remove
Moire fringes, reconvert are returned time domain and up-sampled, and obtain the image after removing moire fringes, because carry out frequency-domain transform is to adopt
The image of sample, considerably reduce the data volume for needing frequency-domain transform so that the removal of moire fringes is quicker.
Figure 10 is the hardware architecture diagram of the electronic equipment for the execution moire fringes minimizing technology that the embodiment of the present application provides,
As shown in Figure 10, the electronic equipment includes：
One or more processors 1010 and memory 1020, in Figure 10 by taking a processor 1010 as an example.
Performing the equipment of date storage method can also include：Input unit 1030 and output device 1040.
Processor 1010, memory 1020, input unit 1030 and output device 1040 can by bus or other
Mode connects, in Figure 10 exemplified by being connected by bus 1050.
Memory 1020 is used as a kind of non-volatile computer readable storage medium storing program for executing, available for storage non-volatile software journey
Sequence, non-volatile computer executable program and module, the program as corresponding to the date storage method in the embodiment of the present application
Instruction/module (for example, modules shown in accompanying drawing 8).Processor 1010 is stored in non-in memory 1020 by operation
Volatibility software program, instruction and module, various function application and data processing so as to execute server, that is, realize
State the date storage method of embodiment of the method.
Memory 1020 can include storing program area and storage data field, wherein, storing program area can store operation system
Application program required for system, at least one function；Storage data field can store to be created according to using for data storage device
Data etc..In addition, memory 1020 can include high-speed random access memory, nonvolatile memory can also be included,
A for example, at least disk memory, flush memory device or other non-volatile solid state memory parts.In certain embodiments,
Memory 1020 is optional including that can pass through network relative to the remotely located memory of processor 1010, these remote memories
It is connected to data storage device.The example of above-mentioned network includes but is not limited to internet, intranet, LAN, mobile logical
Letter net and combinations thereof.
Input unit 1030 can receive the numeral or character information of input, and produce and set with the user of data storage device
Put and the input of key signals that function control is relevant.Output device 1040 may include the display devices such as display screen.
One or more of modules are stored in the memory 1020, when by one or more of processors
During 1010 execution, the date storage method in above-mentioned any means embodiment is performed.
The said goods can perform the method that the embodiment of the present application is provided, and possesses the corresponding functional module of execution method and has
Beneficial effect.Not ins and outs of detailed description in the present embodiment, reference can be made to the method that the embodiment of the present application is provided.
The electronic equipment of the embodiment of the present invention exists in a variety of forms, includes but is not limited to：
(1) mobile communication equipment：The characteristics of this kind equipment is that possess mobile communication function, and to provide speech, data
Communicate as main target.This Terminal Type includes:Smart mobile phone, multimedia handset, feature mobile phone, and low-end mobile phone etc..
(2) super mobile personal computer equipment：This kind equipment belongs to the category of personal computer, there is calculating and processing work(
Can, typically also possess mobile Internet access characteristic.This Terminal Type includes：Palm PC (PDA Personal Digital
Assistant), mobile internet device (MID, Mobile Internet Device) and Ultra-Mobile PC
(UMPC, Ultra-mobile Personal Computer) equipment etc..
(3) portable entertainment device:This kind equipment can show and play content of multimedia.The kind equipment includes:Audio,
Video player, handheld device, e-book, and intelligent toy and portable car-mounted navigation equipment.
(4) server：The equipment for providing the service of calculating, the composition of server are total including processor, hard disk, internal memory, system
Line etc., server is similar with general computer architecture, but due to needing to provide highly reliable service, therefore in processing energy
Power, stability, reliability, security, scalability, manageability etc. require higher.
(5) other electronic installations with data interaction function.
In multiple embodiments provided herein, it should be understood that disclosed device and method, it can be passed through
Its mode is realized.For example, the embodiment of moire fringes removal device described above is only schematical, for example, described
The division of module, only a kind of division of logic function, can there are other dividing mode, such as multiple modules when actually realizing
Or component can combine or be desirably integrated into another system, or some features can be ignored, or not perform.It is another, institute
Display or the mutual coupling discussed or direct-coupling or communication linkage can be by some interfaces, the indirect coupling of module
Conjunction or communication linkage, can be electrical, mechanical or other forms.
The module illustrated as separating component can be or may not be physically separate, show as module
The part shown can be or may not be physical module, you can with positioned at a place, or can also be distributed to multiple
On mixed-media network modules mixed-media.Some or all of module therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional module in each embodiment of the present invention can be integrated in a processing module, can also
That modules are individually physically present, can also two or more modules be integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, can also be realized in the form of software function module.
If the integrated module is realized in the form of software function module and is used as independent production marketing or use
When, it can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part to be contributed in other words to prior art or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are causing a computer
Equipment (can be personal computer, server, or network equipment etc.) performs the complete of each embodiment methods described of the present invention
Portion or part steps.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
It should be noted that for foregoing each method embodiment, in order to which simplicity describes, therefore it is all expressed as a series of
Combination of actions, but those skilled in the art should know, the present invention is not limited by described sequence of movement because
According to the present invention, some steps can use other orders or carry out simultaneously.Secondly, those skilled in the art should also know
Know, embodiment described in this description belongs to preferred embodiment, and involved action and module might not all be this hairs
Necessary to bright.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and does not have the portion being described in detail in some embodiment
Point, it may refer to the associated description of other embodiments.
Present invention disclosed above preferred embodiment is only intended to help and illustrates the present invention.Alternative embodiment is not detailed
All details are described, it is only described embodiment also not limit the invention.Obviously, according to the content of this specification,
It can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is to preferably explain the present invention
Principle and practical application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and its four corner and equivalent.
Claims (8)
- A kind of 1. moire fringes minimizing technology, it is characterised in that including：Judge whether there are moire fringes in pending image；If there are moire fringes in pending image, pending image is converted to the spectrogram of frequency domain；Frequency is higher than the information of predetermined threshold value in filtered spectrum figure；Spectrogram after filtering is converted back into time domain.
- 2. moire fringes minimizing technology according to claim 1, it is characterised in that described to judge whether have in pending image Moire fringes include：Obtain the pixel corner result figure of pending image；Angle point statistical value in the statistics angle point result figure of subregion；If the ratio for the areal and region sum that region angle point statistical value exceedes predeterminable area angle point statistical threshold exceedes pre- If ratio, it is determined that have moire fringes in pending image；Otherwise, it determines without moire fringes in pending image.
- 3. moire fringes minimizing technology according to claim 2, it is characterised in that the pixel corner be and left adjacent and upper neighbour Discrepant pixel.
- 4. moire fringes minimizing technology according to claim 1, it is characterised in thatThe spectrogram that pending figure image is converted to frequency domain is included：Pending image is carried out it is down-sampled, will be down-sampled after image be converted to the spectrogram of frequency domain；Also include after spectrogram after filtering is converted back into time domain：Up-sampling processing is carried out to the image for converting back time domain.
- A kind of 5. moire fringes removal device, it is characterised in that including：Judge module, for judging whether there is moire fringes in pending image；First modular converter, during for there are moire fringes in the picture, pending image is converted to the spectrogram of frequency domain；Filtering module, the information of predetermined threshold value is higher than for frequency in filtered spectrum figure；Second modular converter, for the spectrogram after filtering to be converted back into time domain.
- 6. moire fringes removal device according to claim 5, it is characterised in that the judge module includes：Obtain submodule Block, for obtaining the pixel corner result figure of pending image；Statistic submodule, the angle point statistical value in angle point result figure is counted for subregion；Determination sub-module, the areal and region for exceeding predeterminable area angle point statistical threshold in region angle point statistical value are total When several ratio exceedes preset ratio, determine there are moire fringes in pending image；Otherwise, it determines nothing mole in pending image Line.
- 7. moire fringes removal device according to claim 6, it is characterised in that the pixel corner be and left adjacent and upper neighbour Discrepant pixel.
- 8. moire fringes removal device according to claim 5, it is characterised in thatFirst modular converter be additionally operable to pending image carry out it is down-sampled, will be down-sampled after image be converted to frequency domain Spectrogram；Second modular converter, is additionally operable to convert back the spectrogram after filtering and the image that converts back time domain is carried out after time domain Up-sampling processing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710196283.5A CN107424123B (en) | 2017-03-29 | 2017-03-29 | Moire pattern removing method and device |
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| CN201710196283.5A CN107424123B (en) | 2017-03-29 | 2017-03-29 | Moire pattern removing method and device |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104268512A (en) * | 2014-09-17 | 2015-01-07 | 清华大学 | Method and device for recognizing characters in image on basis of optical character recognition |
| CN104486534A (en) * | 2014-12-16 | 2015-04-01 | 西安诺瓦电子科技有限公司 | Moire detecting and suppression method and device |
-
2017
- 2017-03-29 CN CN201710196283.5A patent/CN107424123B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104268512A (en) * | 2014-09-17 | 2015-01-07 | 清华大学 | Method and device for recognizing characters in image on basis of optical character recognition |
| CN104486534A (en) * | 2014-12-16 | 2015-04-01 | 西安诺瓦电子科技有限公司 | Moire detecting and suppression method and device |
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