CN107644412A - A kind of printing effect determination methods and device - Google Patents
A kind of printing effect determination methods and device Download PDFInfo
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- CN107644412A CN107644412A CN201710668952.4A CN201710668952A CN107644412A CN 107644412 A CN107644412 A CN 107644412A CN 201710668952 A CN201710668952 A CN 201710668952A CN 107644412 A CN107644412 A CN 107644412A
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Abstract
The invention discloses a kind of printing effect determination methods, comprise the following steps：S1, the maximum rectangular active area for obtaining original picture, maximum rectangular active area refer to the non-blank-white rectangular area of maximum；S2, obtain original picture maximum rectangular active area in each pixel gray value；S3, printing original picture obtain printing picture and shoot printing picture to obtain picture of taking pictures；S4, the maximum rectangular active area for obtaining picture of taking pictures；The take pictures maximum rectangular active area of picture of S5, scaling is allowed to identical with the maximum rectangular active area size of original picture；The gray value of each pixel in the maximum rectangular active area of picture of taking pictures after S6, acquisition scaling；S7, printing effect judged according to the gray value of the maximum rectangular active area same position pixel of the picture of taking pictures after the maximum rectangular active area of original picture and scaling；A kind of printing effect judgment means are also disclosed.For the present invention to the accuracy of judgement degree of printing effect and with a high credibility, error rate is low.
Description
Technical field
The present invention relates to printing field, especially a kind of printing effect determination methods and device.
Background technology
Good printing effect is the important guarantee of printer industry product quality assurance.At present, the printing effect of printer
Fruit is complete by visually observing, subjective judgement printing effect it is deep or light and whether clear；Identical picture or different photo prints come out
Effect, different people judged result can have very big difference, and error rate is big.
The content of the invention
In order to solve the above-mentioned technical problem, it is an object of the invention to provide a kind of printing effect error in judgement rate is low and credible
Spend high printing effect determination methods and device.
The technical solution adopted in the present invention is：A kind of printing effect determination methods, comprise the following steps：
S1, the maximum rectangular active area for obtaining original picture, the maximum rectangular active area refer to the non-blank-white of maximum
Rectangular area；
S2, the gray value for obtaining each pixel in the maximum rectangular active area of the original picture；
S3, the printing original picture obtain printing picture and shoot printing picture to obtain picture of taking pictures；
S4, obtain described in take pictures the maximum rectangular active area of picture；
The maximum rectangular active area of picture of being taken pictures described in S5, scaling is allowed to big with the maximum rectangular active area of original picture
It is small identical；
The gray value of each pixel in the maximum rectangular active area of picture of taking pictures after S6, the acquisition scaling；
S7, the maximum rectangle effective district according to the picture of taking pictures after the maximum rectangular active area of the original picture and scaling
The gray value of domain same position pixel judges printing effect.
Further, the step S7 comprises the following steps：
It is S71, effective according to the maximum rectangle of the picture of taking pictures after the maximum rectangular active area of the original picture and scaling
The gray scale of region same position pixel is worth to the gray value differences of same position pixel；
S72, average value and dispersion degree value according to all gray value differences acquisition gray value differences, the gray value differences
Average value characterize gradation of the printing picture with respect to original picture, the average value of the gray value differences is more big denseer；It is otherwise lighter；
The dispersion degree value of the gray value differences characterizes definition of the printing picture with respect to original picture；The dispersion degree of the gray value differences
Value is more big fuzzyyer；It is otherwise more clear.
Further, the scope of the average value of the gray value differences is -255 to 255.
Further, the dispersion degree value is extreme difference, mean difference or standard deviation.
Further, the dispersion degree value is more than or equal to 0.
Further, the acquisition methods of the maximum rectangular active area are:
Picture is subjected to gray processing；
Obtain the gray value of each pixel of picture after gray processing；
The maximum rectangular area that gray value in the picture after the gray processing is more than zero is obtained, the maximum rectangular area is
The maximum rectangular active area of picture.
Further, the method that picture is carried out to gray processing is that component method, maximum value process, mean value method or weighting are flat
Equal method.
Another technical scheme of the present invention is：A kind of printing effect judgment means, including
First maximum rectangular active area acquiring unit, for obtaining the maximum rectangular active area of original picture, it is described most
Big rectangular active area refers to the non-blank-white rectangular area of maximum；
First gray value acquiring unit, the ash of each pixel in the maximum rectangular active area for obtaining the original picture
Angle value；
Take pictures picture acquiring unit, obtain printing picture and shooting printing picture clapping to obtain for printing the original picture
Photograph and picture；
Second maximum rectangular active area acquiring unit, for obtaining the maximum rectangular active area of the picture of taking pictures；
Unit for scaling, the maximum rectangular active area for scaling the picture of taking pictures are allowed to the maximum rectangle with original picture
Effective coverage size is identical；
Second gray value acquiring unit, it is each in the maximum rectangular active area for obtaining the picture of taking pictures after the scaling
The gray value of pixel；
Judging unit, the maximum for the picture of taking pictures after the maximum rectangular active area according to the original picture and scaling
The gray value of rectangular active area same position pixel judges printing effect.
Further, the judging unit includes：
Gray value differences acquisition module, for the figure of taking pictures after the maximum rectangular active area according to the original picture and scaling
The gray scale of the maximum rectangular active area same position pixel of piece is worth to the gray value differences of same position pixel；
Judge module is calculated, for obtaining the average value and dispersion degree of gray value differences according to all gray value differences
Value, the average value of the gray value differences characterize gradation of the printing picture with respect to original picture, and the average value of the gray value differences is got over
It is big denseer；It is otherwise lighter；The dispersion degree value of the gray value differences characterizes definition of the printing picture with respect to original picture；The ash
The dispersion degree value of angle value difference is more big fuzzyyer；It is otherwise more clear.
Another technical scheme of the present invention is：A kind of printing effect judgment means, including
Memory, for depositing program；
Processor, described program is performed, for performing following steps：
S1, the maximum rectangular active area for obtaining original picture, the maximum rectangular active area refer to the non-blank-white of maximum
Rectangular area；
S2, the gray value for obtaining each pixel in the maximum rectangular active area of the original picture；
S3, the printing original picture obtain printing picture and shoot printing picture to obtain picture of taking pictures；
S4, obtain described in take pictures the maximum rectangular active area of picture；
The maximum rectangular active area of picture of being taken pictures described in S5, scaling is allowed to big with the maximum rectangular active area of original picture
It is small identical；
The gray value of each pixel in the maximum rectangular active area of picture of taking pictures after S6, the acquisition scaling；
S7, the maximum rectangle effective district according to the picture of taking pictures after the maximum rectangular active area of the original picture and scaling
The gray value of domain same position pixel judges printing effect.
The beneficial effects of the invention are as follows：
The present invention to original picture by being taken pictures to obtain picture of taking pictures, and according to the maximum rectangular active area of original picture
Judge printing effect, printing effect with the gray value of the maximum rectangular active area same position pixel of the picture of taking pictures after scaling
Fruit accuracy of judgement degree and with a high credibility, error rate is low.
In addition, the maximum square of the picture of taking pictures after maximum rectangular active area and scaling of the present invention by obtaining original picture
The average value of the gray value differences of shape effective coverage same position pixel and dispersion degree value carry out printing effect judgement, numeral
Quantify printing effect, realize that printing effect easily and rapidly judges.
Brief description of the drawings
The embodiment of the present invention is described further below in conjunction with the accompanying drawings：
Fig. 1 is an a kind of specific embodiment method flow diagram of printing effect determination methods in the present invention.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.
A kind of printing effect judgment means, including
First maximum rectangular active area acquiring unit, for obtaining the maximum rectangular active area of original picture, maximum square
Shape effective coverage refers to the non-blank-white rectangular area of maximum；
First gray value acquiring unit, the gray scale of each pixel in the maximum rectangular active area for obtaining original picture
Value；
Take pictures picture acquiring unit, obtain printing picture and shoot printing picture to obtain figure of taking pictures for printing original picture
Piece；
Second maximum rectangular active area acquiring unit, for obtaining the maximum rectangular active area for picture of taking pictures；
Unit for scaling, the maximum rectangular active area for scaling picture of taking pictures are allowed to effective with the maximum rectangle of original picture
Area size is identical；
Second gray value acquiring unit, for each pixel in the maximum rectangular active area of the picture of taking pictures after acquisition scaling
The gray value of point；
Judging unit, the maximum rectangle for the picture of taking pictures after the maximum rectangular active area according to original picture and scaling
The gray value of effective coverage same position pixel judges printing effect.
Further, judging unit includes：
Gray value differences acquisition module, for the picture of taking pictures after the maximum rectangular active area according to original picture and scaling
The gray scale of maximum rectangular active area same position pixel is worth to the gray value differences of same position pixel；
Judge module is calculated, for obtaining the average value and dispersion degree value of gray value differences, ash according to all gray value differences
The average value of angle value difference characterizes gradation of the printing picture with respect to original picture, and the average value of gray value differences is more big denseer；Otherwise more
It is light；The dispersion degree value of gray value differences characterizes definition of the printing picture with respect to original picture；The dispersion degree value of gray value differences is got over
It is big fuzzyyer；It is otherwise more clear.
A kind of printing effect judgment means, including
Memory, for depositing program；
Processor, configuration processor, for performing following steps：
S1, the maximum rectangular active area for obtaining original picture, maximum rectangular active area refer to the non-blank-white rectangle of maximum
Region；
S2, obtain original picture maximum rectangular active area in each pixel gray value；
S3, printing original picture obtain printing picture and shoot printing picture to obtain picture of taking pictures；
S4, the maximum rectangular active area for obtaining picture of taking pictures；
The take pictures maximum rectangular active area of picture of S5, scaling is allowed to maximum rectangular active area size phase with original picture
Together；
The gray value of each pixel in the maximum rectangular active area of picture of taking pictures after S6, acquisition scaling；
S7, the maximum rectangular active area phase according to the picture of taking pictures after the maximum rectangular active area of original picture and scaling
Gray value with position pixel judges printing effect.
Based on above-mentioned printing effect judgment means, the present invention also proposes a kind of printing effect determination methods, including following step
Suddenly：
S1, the maximum rectangular active area for obtaining original picture, maximum rectangular active area refer to the non-blank-white rectangle of maximum
Region；
S2, obtain original picture maximum rectangular active area in each pixel gray value；
S3, printing original picture obtain printing picture and shoot printing picture to obtain picture of taking pictures；
S4, the maximum rectangular active area for obtaining picture of taking pictures；
The take pictures maximum rectangular active area of picture of S5, scaling is allowed to maximum rectangular active area size phase with original picture
Together；
The gray value of each pixel in the maximum rectangular active area of picture of taking pictures after S6, acquisition scaling；
S7, the maximum rectangular active area phase according to the picture of taking pictures after the maximum rectangular active area of original picture and scaling
Gray value with position pixel judges printing effect.
The present invention to original picture by being taken pictures to obtain picture of taking pictures, and according to the maximum rectangular active area of original picture
Judge printing effect, printing effect with the gray value of the maximum rectangular active area same position pixel of the picture of taking pictures after scaling
Fruit accuracy of judgement degree and with a high credibility, error rate is low.
As the further improvement of technical scheme, the acquisition methods of maximum rectangular active area are:
Picture is subjected to gray processing；Further, the method that picture is carried out to gray processing is component method, maximum value process, put down
Averaging method or weighted mean method；
Obtain the gray value of each pixel of picture after gray processing；
Obtain gray processing after picture in gray value be more than zero maximum rectangular area, maximum rectangular area be picture most
Big rectangular active area, namely maximum non-blank-white rectangular area.
With reference to figure 1, Fig. 1 is an a kind of specific embodiment method flow diagram of printing effect determination methods in the present invention；It is real
When border judges, original picture is switched to 8bit gray scale picture, calculates the gray value of each pixel in original picture；Further according to pixel
Gray value judge whether to be more than zero, obtain the maximum rectangular area of original picture；Then the maximum rectangular area of original picture is obtained
The gray value of each pixel；Original picture is printed again obtains printing picture, shooting printing picture, to the progress of printed drawings piece and original picture
The same operation obtains the maximum rectangular area for picture of taking pictures；Then scaling take pictures picture maximum rectangular area to and original picture
Maximum rectangular area size it is identical；Obtain the ash of each pixel in the maximum rectangular active area of the picture of taking pictures after scaling
Angle value.Finally, according to the maximum rectangular active area phase of the picture of taking pictures after the maximum rectangular active area of original picture and scaling
Gray value with position pixel judges printing effect.
As the further improvement of technical scheme, with reference to figure 1, step S7 comprises the following steps：
S71, the maximum rectangular active area according to the picture of taking pictures after the maximum rectangular active area of original picture and scaling
The gray scale of same position pixel is worth to the gray value differences of same position pixel；
S72, average value and dispersion degree value according to the gray value differences of all positions acquisition gray value differences, gray value differences
Average value characterizes gradation of the printing picture with respect to original picture, and the scope of the average value of gray value differences is -255 to 255；Gray value
The average value of difference is more big denseer, and printing effect is better；It is otherwise lighter.Printing effect is more bad；The dispersion degree value of gray value differences
Characterize definition of the printing picture with respect to original picture；Further, dispersion degree value is extreme difference, mean difference or standard deviation；It is discrete
Degree value is more than or equal to 0；The dispersion degree value of gray value differences is more big fuzzyyer, and printing effect is more bad；Otherwise more clear, printing
Effect is better.
The present invention passes through digital quantization printing effect so that printing effect has been determined with a unified standard, that is, beats
The effect come is printed off with respect to the gradation of artwork, that is, the average value of gray value differences, in the range of -255~255, smaller phase
Lighter to artwork, bigger relative artwork is denseer；The effect printed is with respect to the definition of artwork, that is, dispersion degree value,
Dispersion degree value is more than or equal to 0, and smaller relative artwork is more clear, and bigger relative artwork is fuzzyyer.The printing that digital quantization comes out
Measure of effectiveness value, there is the high degree of accuracy and confidence level.
Above is the preferable implementation to the present invention is illustrated, but the invention is not limited to the implementation
Example, those skilled in the art can also make a variety of equivalent variations on the premise of without prejudice to spirit of the invention or replace
Change, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (10)
1. a kind of printing effect determination methods, it is characterised in that comprise the following steps：
S1, the maximum rectangular active area for obtaining original picture, the maximum rectangular active area refer to the non-blank-white rectangle of maximum
Region；
S2, the gray value for obtaining each pixel in the maximum rectangular active area of the original picture；
S3, the printing original picture obtain printing picture and shoot printing picture to obtain picture of taking pictures；
S4, obtain described in take pictures the maximum rectangular active area of picture；
The maximum rectangular active area of picture of being taken pictures described in S5, scaling is allowed to maximum rectangular active area size phase with original picture
Together；
The gray value of each pixel in the maximum rectangular active area of picture of taking pictures after S6, the acquisition scaling；
S7, the maximum rectangular active area phase according to the picture of taking pictures after the maximum rectangular active area of the original picture and scaling
Gray value with position pixel judges printing effect.
2. a kind of printing effect determination methods according to claim 1, it is characterised in that the step S7 includes following step
Suddenly：
S71, the maximum rectangular active area according to the picture of taking pictures after the maximum rectangular active area of the original picture and scaling
The gray scale of same position pixel is worth to the gray value differences of same position pixel；
S72, average value and dispersion degree value according to all gray value differences acquisition gray value differences, the gray value differences are put down
Average characterizes gradation of the printing picture with respect to original picture, and the average value of the gray value differences is more big denseer；It is otherwise lighter；It is described
The dispersion degree value of gray value differences characterizes definition of the printing picture with respect to original picture；The dispersion degree value of the gray value differences is got over
It is big fuzzyyer；It is otherwise more clear.
A kind of 3. printing effect determination methods according to claim 2, it is characterised in that the average value of the gray value differences
Scope be -255 to 255.
4. a kind of printing effect determination methods according to claim 2, it is characterised in that the dispersion degree value is pole
Difference, mean difference or standard deviation.
A kind of 5. printing effect determination methods according to claim 4, it is characterised in that the dispersion degree value be more than etc.
In 0.
A kind of 6. printing effect determination methods according to any one of claim 1 to 5, it is characterised in that the maximum square
The acquisition methods of shape effective coverage are:
Picture is subjected to gray processing；
Obtain the gray value of each pixel of picture after gray processing；
The maximum rectangular area that gray value in the picture after the gray processing is more than zero is obtained, the maximum rectangular area is picture
Maximum rectangular active area.
7. a kind of printing effect determination methods according to claim 6, it is characterised in that described that picture is subjected to gray processing
Method be component method, maximum value process, mean value method or weighted mean method.
A kind of 8. printing effect judgment means, it is characterised in that including
First maximum rectangular active area acquiring unit, for obtaining the maximum rectangular active area of original picture, the maximum square
Shape effective coverage refers to the non-blank-white rectangular area of maximum；
First gray value acquiring unit, the gray scale of each pixel in the maximum rectangular active area for obtaining the original picture
Value；
Take pictures picture acquiring unit, obtain printing picture and shoot printing picture to obtain figure of taking pictures for printing the original picture
Piece；
Second maximum rectangular active area acquiring unit, for obtaining the maximum rectangular active area of the picture of taking pictures；
Unit for scaling, the maximum rectangular active area for scaling the picture of taking pictures are allowed to effective with the maximum rectangle of original picture
Area size is identical；
Second gray value acquiring unit, each pixel in the maximum rectangular active area for obtaining the picture of taking pictures after the scaling
The gray value of point；
Judging unit, the maximum rectangle for the picture of taking pictures after the maximum rectangular active area according to the original picture and scaling
The gray value of effective coverage same position pixel judges printing effect.
9. a kind of printing effect judgment means according to claim 8, it is characterised in that the judging unit includes：
Gray value differences acquisition module, for the picture of taking pictures after the maximum rectangular active area according to the original picture and scaling
The gray scale of maximum rectangular active area same position pixel is worth to the gray value differences of same position pixel；
Judge module is calculated, for obtaining the average value and dispersion degree value of gray value differences, institute according to all gray value differences
State gray value differences average value characterize printing picture with respect to original picture gradation, the average value of the gray value differences it is more big more
It is dense；It is otherwise lighter；The dispersion degree value of the gray value differences characterizes definition of the printing picture with respect to original picture；The gray value
The dispersion degree value of difference is more big fuzzyyer；It is otherwise more clear.
A kind of 10. printing effect judgment means, it is characterised in that including
Memory, for depositing program；
Processor, described program is performed, for performing following steps：
S1, the maximum rectangular active area for obtaining original picture, the maximum rectangular active area refer to the non-blank-white rectangle of maximum
Region；
S2, the gray value for obtaining each pixel in the maximum rectangular active area of the original picture；
S3, the printing original picture obtain printing picture and shoot printing picture to obtain picture of taking pictures；
S4, obtain described in take pictures the maximum rectangular active area of picture；
The maximum rectangular active area of picture of being taken pictures described in S5, scaling is allowed to maximum rectangular active area size phase with original picture
Together；
The gray value of each pixel in the maximum rectangular active area of picture of taking pictures after S6, the acquisition scaling；
S7, the maximum rectangular active area phase according to the picture of taking pictures after the maximum rectangular active area of the original picture and scaling
Gray value with position pixel judges printing effect.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710668952.4A CN107644412B (en) | 2017-08-08 | 2017-08-08 | Printing effect judgment method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710668952.4A CN107644412B (en) | 2017-08-08 | 2017-08-08 | Printing effect judgment method and device |
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| CN107644412A true CN107644412A (en) | 2018-01-30 |
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| CN201710668952.4A Active CN107644412B (en) | 2017-08-08 | 2017-08-08 | Printing effect judgment method and device |
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| CN108628557A (en) * | 2018-04-19 | 2018-10-09 | 深圳鼎智通讯股份有限公司 | A kind of efficient printer technology based on picture compression |
| CN110861418A (en) * | 2019-11-14 | 2020-03-06 | 艾体威尔电子技术(北京)有限公司 | Method for printing color photo under single gray scale condition |
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