CN102291516A - Image resolution regulation method - Google Patents

Image resolution regulation method Download PDF

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Publication number
CN102291516A
CN102291516A CN2010102087162A CN201010208716A CN102291516A CN 102291516 A CN102291516 A CN 102291516A CN 2010102087162 A CN2010102087162 A CN 2010102087162A CN 201010208716 A CN201010208716 A CN 201010208716A CN 102291516 A CN102291516 A CN 102291516A
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Prior art keywords
resolution
image
fog
level
adjustment
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CN2010102087162A
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Chinese (zh)
Inventor
边修弘
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Altek Corp
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Altek Corp
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Priority to CN2010102087162A priority Critical patent/CN102291516A/en
Publication of CN102291516A publication Critical patent/CN102291516A/en
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Abstract

The invention relates to an image resolution regulation method, which is applied to an image capturing device. The image capturing device comprises an image pickup module and a storage unit, and the image resolution regulation method comprises the following steps of: using the image pickup module for shooting an image with the first resolution; analyzing the first fuzzy degree of the shot image; comparing the fuzzy degree to a threshold; reducing the resolution of the image to the second resolution from the first resolution when the fuzzy degree exceeds the threshold and storing the image into the storage unit at the second resolution; and storing the image into the storage unit at the first resolution when the fuzzy degree does not exceed the threshold. The image resolution regulation method has the advantages that the resolution when the shot image is stored is determined through analyzing the image quality of the shot image, so the stored resources are effectively utilized.

Description

The method of adjustment of image resolution
Technical field
The present invention relates to a kind of image treatment method, particularly a kind of method of adjustment of image resolution.
Background technology
Along with the development of digital camera, make that photography no longer is expensive consumption.The user can be random the desired image of shooting, in order to write down memorable a moment or scene.
When taking, general user wishes that taken photo is apparent.So, when photographic subjects thing (can be landscape, personage or article), all to adjust suitably for the focal length and the brightness of object, just can photograph satisfied photo.
Along with the progress of science and technology, digital camera provides the function of automatic setting camera parameter mostly.In general, digital camera calculates suitable camera parameter at object.
On the resolution of the image that photographs, still can only before taking pictures, be provided relevant menu to adjust by digital camera voluntarily by the user.
If the user does not change resolution setting, all can have equal resolution at every kind of occasion, every kind of theme or the taken image of each leading role this moment.
Because the storage area of digital camera is limited, when resolution setting was higher, the image number that can take then can be less relatively.And when putting in order, regular meeting finds that having many photos of getting useless, that hesitate to discard to be left has occupied storage resources, for example: the individual photo album on the memory card on the camera, the hard disk on the computer, burning CD or the network afterwards.
Otherwise, when in order to save the space of storage area, and when selecting to use lower resolution, then can sacrifice the details of good photo.
In order not omit any details, when selecting to use highest resolution, the photo of inferior, the relatively poor or extreme difference of effect then can not have or the extremely unworthy space that occupies the camera Storage Media, has influenced greatly and can clap number.
Summary of the invention
In view of above problem, the invention provides a kind of method of adjustment of image resolution, by solving the one or more problems of existing in prior technology.
The method of adjustment of the disclosed image resolution of the present invention, it is applied to an image capture unit.
This image capture unit comprises a photographing module and a storage element.
At first, the image that utilizes photographing module to photograph to have first resolution, and analyze the fog-level of the image that photographs.
Then, the fog-level that analysis is obtained is compared with a threshold value.When fog-level surpassed threshold value, it was second resolution that the resolution of image is turned down from first resolution, and image is stored in the storage element with second resolution.When fog-level does not surpass threshold value, image is stored in the storage element with first resolution.
The method of adjustment of the image resolution that the present invention discloses in addition, it is applied to an image capture unit.This image capture unit comprises a photographing module and a storage element.
At first, the image that utilizes photographing module to photograph to have first resolution, and analyze the fog-level of the image that photographs.
Then, the fog-level that obtains with analysis is searched a relation information.Wherein, relation information comprises the first fuzzy scope, the different at least one second fuzzy scope and the first fuzzy scope and second each self-corresponding resolution of fuzzy scope are adjusted data each other.
When fog-level meets the first fuzzy scope, adjust data according to the resolution of the first fuzzy scope correspondence, image is stored in the storage element with first resolution.When fog-level meets one second fuzzy scope, adjust data according to the resolution of the second fuzzy scope correspondence that meets, it is second resolution that the resolution of image is turned down from first resolution, and image is stored in the storage element with second resolution.
In this, the fog-level of image can calculate by carrying out a fuzzy trace routine.
Method of adjustment according to image resolution of the present invention can be applicable to image capture unit, and the resolution when making the quality of image of its image that can photograph by analysis decide the image that photographs to store is so as to effectively utilizing storage resources.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is the schematic diagram of an image capture unit;
Fig. 2 is the flow chart according to the method for adjustment of the image resolution of first embodiment of the invention;
Fig. 3 is the flow chart according to the method for adjustment of the image resolution of second embodiment of the invention;
Fig. 4 is the flow chart according to the method for adjustment of the image resolution of third embodiment of the invention.
Wherein, Reference numeral
100 image capture units
110 photographing modules
112 lens group
114 photo-sensitive cells
130 storage elements
150 processing units
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and operation principle are done concrete description:
Method of adjustment according to image resolution of the present invention can be applicable to image capture unit, and the resolution when making the quality of image of its image that can photograph by analysis decide the image that photographs to store is so as to effectively utilizing storage resources.Image capture unit can be digital camera, digital camera or has the electronic installation of photographing module (for example: mobile phone or computer etc.).
Please refer to Fig. 1, image capture unit 100 can comprise: photographing module 110, storage element 130 and processing unit 150.Photographing module 110 comprises lens group 112 and photo-sensitive cell 114.
Lens group 112 is in order to adjust the focal length to object.
Photo-sensitive cell 114 corresponding lens group 112 and being provided with.Photo-sensitive cell 114 can receive light signal corresponding to object and peripheral scenery thereof by lens group 112, and the signal of telecommunication that converts digitized video according to received light signal to is to obtain the image corresponding to object.In other words, photo-sensitive cell 114 can be via the find a view image of picture of lens group 112.
Processing unit 150 is electrically connected at photo-sensitive cell 114 and storage element 130.The running of processing unit 150 may command lens group 112 and photo-sensitive cell 114, and the image that will capture is stored in the storage element 130.
Before storing, processing unit 150 can be analyzed the quality of the image that captures and optionally adjust the image resolution that captures according to the quality of the image that captures.
In other words, can software according to the method for adjustment of image resolution of the present invention or firmware program be implemented on the image capture unit 100.Promptly, can be stored in the image capture unit 100 in order to the program code of enforcement according to the method for adjustment of image resolution of the present invention, read and carry out the program code of storage again by the processing unit 150 of image capture unit 100, so that the method for adjustment that image capture unit 100 is carried out according to image resolution of the present invention.
Wherein, processing unit 150 can be by one or more processors, for example: digital signal processor (digitalsignal processor; DSP) etc., realize.Storage element 130 can be realized by one or more holders.Holder can be non-volatility memory or is the volatility memory body.
Fig. 2 is the flow chart of the method for adjustment of image resolution according to an embodiment of the invention.
With reference to Fig. 1 and Fig. 2, at first, utilize photographing module 110 to take with acquisition corresponding to a image (step 210) at a plurality of subject matters in image capture unit 100 the place aheads.This image has first resolution.This first resolution can be the image resolution of image capture unit 100 current settings or is the upper limit (this upper limit can be determined by the ability of image capture unit 100) of the image resolution of image capture unit 100.
Then, analyze the fog-level (step 220) of the image that obtains.In this, can by carry out one fuzzy detect (blur detection) program calculate take the fog-level of image.Moreover, also can be by calculating the contrast of image, with the contrast that calculates numerical value as the fog-level of image.
The fog-level that utilizes analysis to obtain judges whether the quality of image of image is good, and promptly whether fog-level meets impose a condition (step 230).
When the quality of image of image is good, then directly image is stored in the storage element 130 (step 240) with first resolution.
When the quality of image of image was not good, then the resolution of image being turned down from first resolution was second resolution (step 250), and image is stored in the storage element 130 (step 260) with second resolution.
Can utilize a threshold value or have multiple fuzzy scope and a relation information (for example: fuzzy scope and resolution are adjusted the mapping table of data) that the self-corresponding resolution of Qi Ge is adjusted data is compared with the fog-level that analysis obtains in this, whether good so as to the quality of image of judgement image.
Refer again to Fig. 3, the fog-level that obtains can be compared with threshold value (step 232).
When fog-level surpassed threshold value, the quality of image of expression image was not good, and it is second resolution (step 250) that the resolution that is about to image is turned down from first resolution, and image is stored in the storage element 130 (step 260) with second resolution.
In step 250, can when the quality of image of image is not good, turn down determining with the resolution that particular power is current with image.In other words, first resolution can be the particular power of second resolution, and for example: one times, two times or three times are with first-class.
For instance, suppose that image capture unit 100 current image resolutions (that is, first resolution) are set at 6MP, and particular power is preset as one times.At this moment, image capture unit 100 utilizes the resolution of the image that photographing module 110 photographs to be 6MP.When analyzing and judging that the result that obtains is the quality of image of image when not good, then processing unit 150 is carried out resolution and is adjusted programs, so that the resolution of image is turned down into 3MP (that is second resolution) by 6MP (that is, first resolution).
In step 250, also can according to the setting option of the image resolution of image capture unit 100 with the gap of a specific grade with the resolution of image low from the first resolution adjustment be second resolution.In other words, first resolution and second resolution differ a specific grade, and for example: grade, two grades or Three Estate are with first-class.
For instance, the setting option of supposing the image resolution that image capture unit 100 is provided is 10MP (mega pixel), 8MP, 6MP, 4MP, 3MP, 2MP and 1MP, current resolution (that is, first resolution) is set at 8MP, and specific grade is preset as a grade.At this moment, when the quality of image of the image of determining to photograph was not good, then processing unit 150 was carried out resolution and is adjusted program, so that the resolution of image is turned down into 6MP (that is second resolution) by 8MP (that is first resolution).
Otherwise when fog-level did not surpass threshold value, the quality of image of expression image was good, then image is stored in the storage element 130 (step 240) with first resolution.
At this, image capture unit 100 can additionally be set adjusted resolution (that is second resolution) can not be less than the lower limit of the image resolution of image capture unit 100 (this lower limit can by the ability decision of image capture unit 100).
Moreover, the minimum value (that is second resolution) of adjustable image resolution also can be provided according to the setting option of the image resolution that is provided voluntarily by the user.
When the value of predetermined second resolution of adjusting during, then directly with the minimum value of the adjustable image resolution of the lower limit of the image resolution of image capture unit 100 or setting value as second resolution less than the minimum value of the adjustable image resolution of the lower limit of the image resolution of image capture unit 100 or setting.In other words, when the value of predetermined second resolution of adjusting during less than the minimum value of the adjustable image resolution of the lower limit of the image resolution of image capture unit 100 or setting, the image of adjusting is then turned down minimum value into the adjustable image resolution of the lower limit of the image resolution of image capture unit 100 or setting from first resolution.
With reference to Fig. 4, can also analyze the fog-level that obtains and search a relation information (step 234) in addition.This relation information comprises the first fuzzy scope, the different one or more second fuzzy scope and the first fuzzy scope and second each self-corresponding resolution of fuzzy scope are adjusted data each other.
Wherein, the first fuzzy scope represents that the quality of image of image is good, and the second fuzzy scope represents that the quality of image of image is not good.At this moment, it is to represent not carry out the resolution adjustment of image that the resolution of the corresponding first fuzzy scope is adjusted data, is about to image and is stored in the storage element 130 with first resolution.It is that the resolution adjustment of image is carried out in expression that the resolution of the corresponding second fuzzy scope is adjusted data, so that image is adjusted into second resolution from first resolution.When a plurality of second blured scope, this a little second fuzzy scope can be represented the quality of image in various degree respectively, and each self-corresponding resolution is adjusted data and then indicated different adjustment result (that is, adjusting second resolution of different numerical value).Moreover in, fuzzy scope can be a numerical value or is a status indication.Adjust the result and can be special value, particular power or specific grade (based on the setting option of the image resolution of image capture unit 100).
When the fog-level that obtains when analysis meets the first fuzzy scope, adjust data, do not adjust the resolution of image and image is stored in the storage element 130 (step 240) with first resolution according to the resolution of the first fuzzy scope correspondence.
When the fog-level that obtains when analysis meets one second fuzzy scope, resolution according to the second fuzzy scope correspondence that meets is adjusted data, it is second resolution (step 250) that the resolution of image is turned down from first resolution, and image is stored in the storage element 130 (step 260) with second resolution.In other words, second resolution is to adjust data corresponding to the pairing resolution of the second fuzzy scope that meets.
In this, when the value of predetermined second resolution of adjusting during, then directly with the minimum value of the adjustable image resolution of the lower limit of the image resolution of image capture unit 100 or setting value as second resolution less than the minimum value of the adjustable image resolution of the lower limit of the image resolution of image capture unit 100 or setting.In other words, when the value of predetermined second resolution of adjusting during less than the minimum value of the adjustable image resolution of the lower limit of the image resolution of image capture unit 100 or setting, the image of adjusting is then turned down minimum value into the adjustable image resolution of the lower limit of the image resolution of image capture unit 100 or setting from first resolution.
For clearly demonstrating, be example in this with two second fuzzy scopes, the first and second fuzzy scopes and corresponding resolution thereof are adjusted data can be as the relation of following table one.But the non-restriction of the present invention of this quantity, according to actual demand, the second fuzzy scope can be set at more than one or three.
Table one
Fuzzy scope Resolution is adjusted data
The first fuzzy scope Do not adjust
The second fuzzy scope A First adjusts the result
The second fuzzy scope B Second adjusts the result
In other words, relation information can be the mapping table of fuzzy scope and resolution adjustment data.
For instance, the first fuzzy scope can be set at less than 40%, the second fuzzy scope A can be set at 40% to 70%, and the second fuzzy scope B can be set at greater than 70%.In this, the bigger expression image of numerical value is fuzzy more, so this non-restriction of the present invention.And first adjust the result and can be set at and turn down a grade, and second adjust the result and can be set at and turn down two grades.
The setting option of supposing the image resolution that image capture unit 100 is provided is 10MP (mega pixel), 8MP, 6MP, 4MP, 3MP, 2MP and 1MP, and current resolution (that is first resolution) is set at 8MP.
When the fog-level that analyzes meets (falling into) first fuzzy scope, adjust data according to the resolution of the first fuzzy scope correspondence, do not adjust the resolution of image, and image is stored in the storage element 130 with 8MP.
When the fog-level that analyzes meets (falling into) second fuzzy scope A, processing unit 150 is carried out resolution and is adjusted program, adjust data with resolution according to the second fuzzy scope A correspondence, with the resolution of image (promptly by 8MP, first resolution) turn down into 6MP (promptly, second resolution), and with image be stored in the storage element 130 with 6MP.
When the fog-level that analyzes meets (falling into) second fuzzy scope B, processing unit 150 is carried out resolution and is adjusted program, adjust data with resolution according to the second fuzzy scope B correspondence, with the resolution of image (promptly by 8MP, first resolution) turn down into 4MP (promptly, second resolution), and with image be stored in the storage element 130 with 4MP.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims (10)

1. the method for adjustment of an image resolution is applied to an image capture unit, and this image capture unit comprises a photographing module and a storage element, it is characterized in that, the method for adjustment of this image resolution comprises:
An image that utilizes this photographing module to photograph to have one first resolution;
One fog-level of this image that analysis photographs;
Relatively this fog-level and a threshold value;
When this fog-level surpassed this threshold value, it was one second resolution that the resolution of this image is turned down from this first resolution, and this image is stored in this storage element with this second resolution; And
When this fog-level does not surpass this threshold value, this image is stored in this storage element with this first resolution.
2. the method for adjustment of image resolution according to claim 1 is characterized in that, the step of a fog-level of this image that this analysis photographs comprises: by carrying out this fog-level of this image that a fuzzy trace routine photographs with calculating.
3. the method for adjustment of image resolution according to claim 1 is characterized in that, the step of a fog-level of this image that this analysis photographs comprises: the contrast of calculating this image that photographs.
4. the method for adjustment of image resolution according to claim 1 is characterized in that, this first resolution and this second resolution differ a particular power.
5. the method for adjustment of image resolution according to claim 1 is characterized in that, in the setting option of this resolution of this image capture unit, this first resolution and this second resolution differ a specific grade.
6. the method for adjustment of an image resolution is applied to an image capture unit, and this image capture unit comprises a photographing module and a storage element, it is characterized in that, the method for adjustment of this image resolution comprises:
An image that utilizes this photographing module to photograph to have one first resolution;
One fog-level of this image that analysis photographs;
Search a relation information with this fog-level that analysis obtains, wherein this relation information comprises one first fuzzy scope, the different at least one second fuzzy scope and this first fuzzy scope and should each self-corresponding resolution adjustment data of at least one second fuzzy scope each other;
When this fog-level meets this first fuzzy scope, adjust data according to this resolution of this first fuzzy scope correspondence, this image is stored in this storage element with this first resolution; And
When this fog-level one of meets in this at least one second fuzzy scope, this resolution according to this second fuzzy scope correspondence that meets is adjusted data, it is one second resolution that the resolution of this image is turned down from this first resolution, and this image is stored in this storage element with this second resolution.
7. the method for adjustment of image resolution according to claim 6 is characterized in that, the step of a fog-level of this image that this analysis photographs comprises: by carrying out this fog-level of this image that a fuzzy trace routine photographs with calculating.
8. the method for adjustment of image resolution according to claim 6 is characterized in that, the step of a fog-level of this image that this analysis photographs comprises: the contrast of calculating this image that photographs.
9. the method for adjustment of image resolution according to claim 6 is characterized in that, this first resolution and this second resolution differ a particular power.
10. the method for adjustment of image resolution according to claim 6 is characterized in that, this first resolution and this second resolution are to be the two kinds of resolution that differ a specific grade in the setting option of this resolution of this image capture unit.
CN2010102087162A 2010-06-18 2010-06-18 Image resolution regulation method Pending CN102291516A (en)

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Cited By (6)

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CN104702847A (en) * 2015-03-27 2015-06-10 深圳市欧珀通信软件有限公司 Method and device for adjusting image resolution
CN105100607A (en) * 2015-06-26 2015-11-25 努比亚技术有限公司 Shooting device and method
CN105744167A (en) * 2016-03-28 2016-07-06 努比亚技术有限公司 Image taking method and device, and mobile terminal
CN107093418A (en) * 2017-06-20 2017-08-25 努比亚技术有限公司 A kind of screen display method, computer equipment and storage medium
CN108573477A (en) * 2018-03-14 2018-09-25 深圳怡化电脑股份有限公司 Eliminate method, system and the terminal device of image moire fringes
CN109803103A (en) * 2017-11-16 2019-05-24 英属开曼群岛商麦迪创科技股份有限公司 Drive recorder and driving recording method

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US20100026823A1 (en) * 2005-12-27 2010-02-04 Kyocera Corporation Imaging Device and Image Processing Method of Same
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Cited By (9)

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Publication number Priority date Publication date Assignee Title
CN104702847A (en) * 2015-03-27 2015-06-10 深圳市欧珀通信软件有限公司 Method and device for adjusting image resolution
CN104702847B (en) * 2015-03-27 2018-05-29 广东欧珀移动通信有限公司 Image resolution ratio method of adjustment and device
CN105100607A (en) * 2015-06-26 2015-11-25 努比亚技术有限公司 Shooting device and method
CN105744167A (en) * 2016-03-28 2016-07-06 努比亚技术有限公司 Image taking method and device, and mobile terminal
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CN109803103A (en) * 2017-11-16 2019-05-24 英属开曼群岛商麦迪创科技股份有限公司 Drive recorder and driving recording method
CN108573477A (en) * 2018-03-14 2018-09-25 深圳怡化电脑股份有限公司 Eliminate method, system and the terminal device of image moire fringes

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Application publication date: 20111221