CN1326388C - Digital image quality inspecting method and system - Google Patents
Digital image quality inspecting method and system Download PDFInfo
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- CN1326388C CN1326388C CNB2004100425953A CN200410042595A CN1326388C CN 1326388 C CN1326388 C CN 1326388C CN B2004100425953 A CNB2004100425953 A CN B2004100425953A CN 200410042595 A CN200410042595 A CN 200410042595A CN 1326388 C CN1326388 C CN 1326388C
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Abstract
The present invention relates to a method and a system for detecting the quality of a digital image. The system is carried on an electronic information device of a digital video shooting mechanism to carry out an automatic quality detecting program to a digital image shot by the electronic information device and to detect whether the color, the resolution and the luminance distribution condition of the image are in conformity with preset quality standards. The system for detecting the quality of the digital image comprises a quality parameter database, a color detecting module, a resolution detecting module, a luminance detecting module and a detection result display module. Compared with the existing method, the method and the system for detecting the quality of the digital image can make an unprofessional user detect the digital image with poor quality. A small LCD screen is used for checking without a visual mode, and therefore, the present invention has the advantages of excellent improvement and high practicability.
Description
Technical field
The invention relates to a kind of digitized video treatment technology, particularly about a kind of digitized video quality inspection method and system, carry to having digitized video and take on the electronic information aid of mechanism, digital camera (Digital Still Camera for example, DSC), mobile phone, personal digital assistant (Personal Digital Assistant, PDA) etc., take the taken digitized video of mechanism for the digitized video of this electronic information aid and carry out automatic quality inspection.
Background technology
(Digital Still Camera is a kind of digitized video shooting platform DSC) to digital camera, can be used for taking the optical image of various objects and view, and the optical image that it photographs is converted to the image of numeric type.With traditional egative film formula camera relatively because digitized video is than more convenient use of egative film and permanent storage, so digital camera replaces traditional egative film formula camera gradually.
Yet in the practical application; digital camera regular meeting photographs the bad digitized video of quality, for example image of the image of colorfulness deficiency, lack of resolution, the unfavorable image of Luminance Distribution etc. because of many various external environment factors or user's improper operation.
On the traditional method, the user can be for example by small liquid crystal display screen built-in on the digital camera, and colorfulness deficiency, lack of resolution or Luminance Distribution are undesirable to check its taken digitized video with visual type or reference brightness distribution map (histogram).Yet this way must be the Camera crews of comparison specialty usually, just has the ability to judge the quality of digitized video quality with visual type, and is not suitable for general user.Therefore need a kind of method and system that can on digital camera, test automatically to colorfulness, resolution and the Luminance Distribution of digitized video.
Summary of the invention
For overcoming the shortcoming of above-mentioned prior art, main purpose of the present invention is to provide a kind of digitized video quality inspection method and system, but the quality of the digitized video that the logarithmic code camera photographs is carried out automatic gauging, photographs the quality of digitized video to guarantee this digital photographic device.
Digitized video quality inspection method and system of the present invention are designed for lift-launch and take on the electronic information aid of mechanism to having digitized video, digital camera (Digital Still Camera for example, DSC), portable telephone device, personal digital assistant device (Personal Digital Assistant, PDA) etc., the digitized video that this electronic information aid is photographed carries out automatic quality inspection.
Digitized video quality inspection method of the present invention comprises: build in this electronic information aid and put the Q factor database, the standard color value correspondence table that is used to prestore, standard resolution correspondence table and normal brightness value correspondence table; Respond specific user and control incident, carry out the colorfulness check problem, be used for the photography environmental pattern that adopted when being taken according to this digitized video, color-values with the pixel in this digitized video, compare with the data in the standard color value correspondence table that prestores in this Q factor database,, then send the color quality flame if there is the color-values of pixel to be positioned at outside the standard pixel color-values scope, otherwise, then send sum of all pixels check active information; Respond this sum of all pixels check active information, carry out the resolution check problem, be used for the resolution setting value that adopted when being taken according to this digitized video, sum of all pixels with this digitized video, compare with the data in the standard resolution correspondence table that prestores in this Q factor database,, then send resolution quality flame if do not meet, otherwise, then send Luminance Distribution check active information; Respond this Luminance Distribution check active information, carry out the Luminance Distribution check problem, be used for the photography environmental pattern that adopted when being taken according to this digitized video, brightness value with the pixel in this digitized video, compare with the data in the normal brightness value correspondence table that prestores in this Q factor database,, then send Luminance Distribution quality flame if there is the brightness value of pixel to be positioned at outside the standard pixel range of luminance values, otherwise, then send quality inspection and pass through information.
Digitized video quality inspection of the present invention system comprises: the Q factor database wherein prestores standard color value correspondence table, standard resolution correspondence table and normal brightness value correspondence table; The colorfulness inspection module, can respond specific user and control incident, the photography environmental pattern that is adopted when being taken according to this digitized video, data in the standard color value correspondence table that prestores in the color-values of the pixel in this digitized video and this Q factor database are compared, if there is the color-values of pixel to be positioned at outside the standard pixel color-values scope, then send the color quality flame, otherwise, sum of all pixels check active information then sent; The resolution inspection module, can respond this sum of all pixels check active information, the resolution setting value that is adopted when being taken according to this digitized video, data in the standard resolution correspondence table that prestores in the sum of all pixels of this digitized video and this Q factor database are compared, if do not meet, then send resolution quality flame, otherwise, Luminance Distribution check active information then sent; The Luminance Distribution inspection module, can respond this Luminance Distribution check active information, the photography environmental pattern that is adopted when being taken according to this digitized video, data in the normal brightness value correspondence table that prestores in the brightness value of the pixel in this digitized video and this Q factor database are compared, if there is the brightness value of pixel to be positioned at outside the standard pixel range of luminance values, then send Luminance Distribution quality flame, otherwise, then send quality inspection and pass through information; And assay display module, can respond this color quality flame, this resolution quality flame, this Luminance Distribution quality flame and this quality inspection respectively by information, on this electronic information aid, demonstrate corresponding assay information.Breath.
Wherein, above-mentioned standard color value correspondence table is used for the scope of the digitized video of display standard in following the pixel color values that should have of different photography environmental patterns; Above-mentioned standard resolution correspondence table is used for the digitized video of display standard at following sum of all pixels that should have of different resolution setting values; Above-mentioned normal brightness value correspondence table then is used for the scope of the digitized video of display standard at following the pixel brightness value that should have of different photography environmental patterns;
In sum, the characteristics of digitized video quality inspection method and system of the present invention are, can carry out the quality inspection program with automated manner to the specified digitized video of user, whether the color of check digit image, resolution and Luminance Distribution situation meet predetermined quality standard.Compare with existing way, the present invention can allow non-professional user also check out the bad digitized video of quality, and needn't check by small liquid crystal display screen with visual type, therefore has splendid progressive and practicality.
Description of drawings
Fig. 1 is a structural representation, shows the application structure of digitized video quality inspection of the present invention system and the basic structure of Object Oriented OO component model thereof;
Fig. 2 A is the data structure schematic diagram, shows that of standard color value correspondence table data structure stored in the Q factor database of the present invention implements example;
Fig. 2 B is the data structure schematic diagram, shows an enforcement example of the standard resolution correspondence table data structure that Q factor database of the present invention is stored;
Fig. 2 C is the data structure schematic diagram, shows an enforcement example of the normal brightness value correspondence table data structure that Q factor database of the present invention is stored;
Fig. 3 is a schematic diagram, shows an enforcement example of the cross 5 point type matrix area that digitized video quality inspection method and system of the present invention are adopted on digitized video.
Embodiment
Embodiment
Below be conjunction with figs., describe the embodiment of digitized video quality inspection method and system of the present invention in detail.
Fig. 1 is the application structure of digitized video quality inspection system of the present invention (as the included part of frame of broken lines of label 100 indications) and the basic structure of Object Oriented OO component model (object-orientedcomponent model) thereof.As shown in the figure, carry in 100 practical applications of digitized video quality inspection of the present invention system to having digitized video and take the electronic information aid 10 of mechanism, digital camera (Digital Still Camera for example, DSC), portable telephone device, personal digital assistant device (Personal Digital Assistant, PDA) etc., be used for this electronic information aid 10 taken digitized videos are carried out automatic quality inspection.
On concrete the enforcement, the digitized video on this electronic information aid 10 is taken mechanism must have photography environmental pattern set-up function and resolution setting function at least; Wherein be somebody's turn to do photography environmental pattern set-up function, can allow the user set different photography environmental patterns, for example comprise daylight mode (Daylight Mode), cloudy pattern (Cloudy Mode), pattern at night (Night Mode) etc.; This resolution setting function then can allow the user set different resolution, for example comprises VGA (640 * 480), 2M (1600 * 1200), 3M (2048 * 1536), 4M (2304 * 1704), 5M2592 * 1944) etc.When the user is actual when photographing, the digitized video on the electronic information aid 10 is taken mechanism, promptly can take digitized video according to photography environmental pattern and resolution that the user sets.
When implementing digitized video quality inspection method of the present invention, need in this electronic information aid 10, build to put Q factor database 110, the standard color value correspondence table 111 that is used to prestore, standard resolution correspondence table 112 and normal brightness value correspondence table 113; Respond specific user then and control incident and carry out the colorfulness check problem,, then send the color quality flame to assay display module 150 if the color-values of some pixel is positioned at outside the standard pixel color-values scope; Otherwise, then send sum of all pixels check active information to resolution inspection module 130.
Then respond this sum of all pixels check active information and carry out the resolution check problem; If do not meet, then send resolution quality flame to assay display module 150; Otherwise, then send Luminance Distribution check active information to Luminance Distribution inspection module 140.
Respond this Luminance Distribution check active information at last and carry out the Luminance Distribution check problem; If the brightness value of some pixel is positioned at outside the standard pixel range of luminance values, then send Luminance Distribution quality flame to assay display module 150; Otherwise, then send quality inspection by information to assay display module 150.
If assay is that quality is bad, then the user can for example utilize the file delete function on the electronic information aid 10, deletes the bad digitized video of this quality 20, or utilizes other digitized video process software to improve its quality in addition.
As shown in Figure 1, the basic structure of the Object Oriented OO of digitized video quality inspection of the present invention system 100 unit's assembly model (object-oriented component model) comprises at least: (a) the Q factor database 110; (b) the colorfulness inspection module 120; (c) the resolution inspection module 130;
(d) the Luminance Distribution inspection module 140; And (e) assay display module 150.
Prestore at least 3 kinds of digitized video Q factor correspondence table in the Q factor database 110:
(i) standard color value correspondence table 111; (ii) the standard resolution correspondence table 112; And (iii) normal brightness value correspondence table 113.
Shown in Fig. 2 A, standard color value correspondence table 111 is used for the scope of the digitized video (being colory digitized video) of display standard in following the pixel color values that should have of different photography environmental patterns.For example, under daylight mode (Daylight), according to the standard color value correspondence table 111 shown in Fig. 2 A as can be known: the color-values of the red composition (R) of each pixel should be between 180 to 220, the color-values of green composition (G) should be between 140 to 170, and the color-values of blue composition (B) then should be between 170 to 200 (annotate: the color-values that adopt in this place is to be benchmark with 0-255); Then the rest may be inferred for the scope of the pairing pixel color values of remaining photography environmental pattern.
Then shown in Fig. 2 B, the digitized video of standard resolution correspondence table 112 display standards is at following sum of all pixels that should have of different resolution setting values.For example, under the VGA pattern, according to the standard resolution correspondence table 112 shown in Fig. 2 B as can be known: each sum of all pixels of opening the digitized video that photographs under the VGA pattern should be 640 * 480=307200; Then the rest may be inferred for the pairing sum of all pixels of remaining resolution model.
Again then shown in Fig. 2 C, 113 of normal brightness value correspondence table are used for the pixel of digitized video of display standard in the scope of following the brightness value that should have of different photography environmental patterns (nrightness).For example, under daylight mode (Daylight), according to the normal brightness value correspondence table 113 shown in Fig. 2 C as can be known: the brightness value of each pixel should be between 128 to 255 (annotate: the brightness value that adopt in this place is to be benchmark with 0-255); Then the rest may be inferred for the pairing pixel brightness value scope of remaining photography environmental pattern.
In addition, as shown in Figure 3, the pixel in only specific to a group in the inspected digitized video 20 zone (for example criss-cross 5 point type matrix area) of digitized video quality inspection of the present invention system 100 is carried out colorfulness and Luminance Distribution check problem.Because generally speaking, therefore the cross area in the middle of the subject in most digital photos all is positioned at can only carry out colorfulness and Luminance Distribution check problem to these criss-cross 5 point type matrix area.In the embodiment shown in fig. 3, if the resolution of inspected digitized video 20 is 1600 * 1200, then these criss-cross 5 point type matrix area for example comprise 1 200 * 200 middle section and 4 64 * 64 neighboring area.
Colorfulness inspection module 120 can respond specific user and control incident (for example the user has chosen a specific digitized video 20, and then specific button is pressed in choosing), the photography environmental pattern that is adopted during according to these digitized video 20 original shootings, with the color-values of pixel in the 5 point type matrix area (as shown in Figure 3) of the cross on this digitized video 20, the standard pixel color-values that prestores with standard color value correspondence table 111 in the above-mentioned Q factor database 110 compares; If there is the color-values of pixel to be positioned at outside the standard pixel color-values scope, then send the color quality flame to assay display module 150; Otherwise, then send sum of all pixels check active information to resolution inspection module 130.
Resolution inspection module 130 can respond above-mentioned sum of all pixels check active information, the resolution setting value that was adopted when originally being taken according to it, the standard pixel sum that the true resolution (being sum of all pixels) of this digitized video 20 and standard resolution correspondence table 112 in the above-mentioned Q factor database 110 are prestored compares; If do not meet, then send resolution quality flame to assay display module 150; Otherwise, then send Luminance Distribution check active information to Luminance Distribution inspection module 140.
Luminance Distribution inspection module 140 can respond above-mentioned Luminance Distribution check active information, the photography environmental pattern that is adopted when being taken according to this digitized video, with the brightness value of pixel in the 5 point type matrix area (as shown in Figure 3) of the cross on this digitized video 20, the normal brightness value that prestores with normal brightness value correspondence table 113 in the above-mentioned Q factor database 110 compares; If there is the brightness value of pixel to be positioned at outside the standard pixel range of luminance values, then send Luminance Distribution quality flame to assay display module 150; Otherwise, then send quality inspection by information to assay display module 150.
Assay display module 150 can respond above-mentioned color quality flame, resolution quality flame, Luminance Distribution quality flame and quality inspection and pass through information, on the LCD Panel (not showing in the accompanying drawings) of this digital photographic device 10, demonstrate corresponding assay information respectively, whereby assay is informed the user.
Generally speaking, the invention provides a kind of digitized video quality inspection method and system of novelty, can carry to having digitized video and take on the electronic information aid of mechanism, the digitized video taken to this electronic information aid carries out automatic quality inspection, and the digitized video specified to the user comes color, resolution and the Luminance Distribution situation of check digit image whether to conform with predetermined quality standard with automated manner.Compare with existing way, the present invention can allow non-professional user also can check out the bad digitized video of quality, needn't utilize small liquid crystal display screen to test with visual type.Therefore the present invention has splendid progressive and practicality.
Claims (9)
1. digitized video quality inspection method, be applied in and have the electronic information aid that digitized video is taken mechanism, the digitized video of this electronic information aid is taken the taken digitized video of mechanism carries out quality inspection, it is characterized in that this digitized video quality inspection method comprises:
In this electronic information aid, build and put the Q factor database, the standard color value correspondence table that is used to prestore, standard resolution correspondence table and normal brightness value correspondence table; Wherein, this standard color value correspondence table is used for the digitized video of display standard, in the scope of following the pixel color values that should have of different photography environmental patterns; This standard resolution correspondence table is used for the digitized video of display standard, at following sum of all pixels that should have of different resolution setting values; This normal brightness value correspondence table then is used for the digitized video of display standard, in the scope of following the pixel brightness value that should have of different photography environmental patterns;
Respond specific user and control incident, carry out the colorfulness check problem, be used for the photography environmental pattern that adopted when being taken,, compare with data in the standard color value correspondence table that prestores in this Q factor database with the color-values of pixel in this digitized video according to this digitized video; If there is the color-values of pixel to be positioned at outside the standard pixel color-values scope, then send the color quality flame; Otherwise, then send sum of all pixels check active information;
Respond this sum of all pixels check active information, carry out the resolution check problem, be used for the resolution setting value that adopted when being taken,, compare with data in the standard resolution correspondence table that prestores in this Q factor database with the sum of all pixels of this digitized video according to this digitized video; If do not meet, then send resolution quality flame; Otherwise, then send Luminance Distribution check active information;
Respond this Luminance Distribution check active information, carry out the Luminance Distribution check problem, be used for the photography environmental pattern that adopted when being taken according to this digitized video, with the brightness value of the pixel in this digitized video, compare with data in the normal brightness value correspondence table that prestores in this Q factor database; If there is the brightness value of pixel to be positioned at outside the standard pixel range of luminance values, then send Luminance Distribution quality flame; Otherwise, then send quality inspection and pass through information.
2. digitized video quality inspection method as claimed in claim 1 is characterized in that, this electronic information aid with digitized video shooting mechanism is a digital camera.
3. digitized video quality inspection method as claimed in claim 1 is characterized in that, this electronic information aid with digitized video shooting mechanism is a portable telephone device.
4. digitized video quality inspection method as claimed in claim 1 is characterized in that, this electronic information aid with digitized video shooting mechanism is a personal digital assistant device.
5. digitized video quality inspection method as claimed in claim 1 is characterized in that, this colorfulness check problem only carries out at the pixel in the 5 point type matrix area of the cross in this digitized video.
6. digitized video quality inspection method as claimed in claim 1 is characterized in that, this Luminance Distribution check problem only carries out at the pixel in the 5 point type matrix area of the cross in this digitized video.
7. digitized video quality inspection system, carry to having digitized video and take the electronic information aid of mechanism, the digitized video of this electronic information aid is taken the machine-processed digitized video that photographs carries out quality inspection, it is characterized in that this digitized video quality inspection system comprises:
The Q factor database wherein prestores standard color value correspondence table, standard resolution correspondence table and normal brightness value correspondence table; Wherein this standard color value correspondence table is used for the scope of the digitized video of display standard in following the pixel color values that should have of different photography environmental patterns; This standard resolution correspondence table is used for the digitized video of display standard at following sum of all pixels that should have of different resolution setting values; This normal brightness value correspondence table then is used for the scope of the digitized video of display standard at following the pixel brightness value that should have of different photography environmental patterns;
The colorfulness inspection module, can respond specific user and control incident, the photography environmental pattern that is adopted when being taken according to this digitized video compares the data in the standard color value correspondence table that prestores in the color-values of pixel in this digitized video and this Q factor database; If there is the color-values of pixel to be positioned at outside the standard pixel color-values scope, then send the color quality flame; Otherwise, then send sum of all pixels check active information;
The resolution inspection module, can respond this sum of all pixels check active information, the resolution setting value that is adopted when being taken according to this digitized video compares the data in the standard resolution correspondence table that prestores in the sum of all pixels of this digitized video and this Q factor database; If do not meet, then send resolution quality flame; Otherwise, then send Luminance Distribution check active information;
The Luminance Distribution inspection module, can respond this Luminance Distribution check active information, the photography environmental pattern that is adopted when being taken according to this digitized video with the brightness value of the pixel in this digitized video, compares with data in the normal brightness value correspondence table that prestores in this Q factor database; If there is the brightness value of pixel to be positioned at outside the standard pixel range of luminance values, then send Luminance Distribution quality flame; Otherwise, then send quality inspection and pass through information; And
The assay display module can respond this color quality flame, this resolution quality flame, this Luminance Distribution quality flame and this quality inspection respectively by information, demonstrates corresponding assay information on this electronic information aid.
8. digitized video quality inspection as claimed in claim 7 system is characterized in that, this has digitized video, and to take electronic information aid of mechanism be digital camera.
9. digitized video quality inspection as claimed in claim 7 system is characterized in that, this has digitized video, and to take electronic information aid of mechanism be portable telephone device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100425953A CN1326388C (en) | 2004-05-25 | 2004-05-25 | Digital image quality inspecting method and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100425953A CN1326388C (en) | 2004-05-25 | 2004-05-25 | Digital image quality inspecting method and system |
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| Publication Number | Publication Date |
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| CN1705344A CN1705344A (en) | 2005-12-07 |
| CN1326388C true CN1326388C (en) | 2007-07-11 |
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| CNB2004100425953A Expired - Fee Related CN1326388C (en) | 2004-05-25 | 2004-05-25 | Digital image quality inspecting method and system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102035988A (en) * | 2009-09-29 | 2011-04-27 | 深圳富泰宏精密工业有限公司 | System and method for testing photographic effect of mobile phone camera |
| CN110767133A (en) * | 2019-11-08 | 2020-02-07 | 北京转转精神科技有限责任公司 | Automatic inspection method for original screen |
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| JPH07120233A (en) * | 1993-10-26 | 1995-05-12 | Denshi Giken:Kk | Method for inspecting soldering |
| CN1147889A (en) * | 1994-05-13 | 1997-04-16 | 明尼苏达州采矿制造公司 | Automated image quality control |
| CN1240971A (en) * | 1998-07-06 | 2000-01-12 | 鸿友科技股份有限公司 | Method for detecting longitudinal amplification ratio error of image scanner |
| CN1364034A (en) * | 2001-01-08 | 2002-08-14 | Lg电子株式会社 | Method and apparatus for compensdation image quality of projective display |
-
2004
- 2004-05-25 CN CNB2004100425953A patent/CN1326388C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07120233A (en) * | 1993-10-26 | 1995-05-12 | Denshi Giken:Kk | Method for inspecting soldering |
| CN1147889A (en) * | 1994-05-13 | 1997-04-16 | 明尼苏达州采矿制造公司 | Automated image quality control |
| CN1240971A (en) * | 1998-07-06 | 2000-01-12 | 鸿友科技股份有限公司 | Method for detecting longitudinal amplification ratio error of image scanner |
| CN1364034A (en) * | 2001-01-08 | 2002-08-14 | Lg电子株式会社 | Method and apparatus for compensdation image quality of projective display |
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