CN1897712A - Image adjusting method and its applied digital image pickup device - Google Patents
Image adjusting method and its applied digital image pickup device Download PDFInfo
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- CN1897712A CN1897712A CN 200510035809 CN200510035809A CN1897712A CN 1897712 A CN1897712 A CN 1897712A CN 200510035809 CN200510035809 CN 200510035809 CN 200510035809 A CN200510035809 A CN 200510035809A CN 1897712 A CN1897712 A CN 1897712A
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Abstract
The digital video camera can provide a preview image for user to find a view. The method thereof comprises: in the first, the user enters into the GAMA correction mode of the digital video camera to set a GAMA correction value in order to make GAMA correction for the captured image; user can preview the captured image to decide if the GAMA correction with the preset GAMA value needs to be made for the captured image; if deciding to not use a newly setting value to make GAMA correction and to repeat the GAMA correction with a previously set value, then reentering into the GAMA correction mode.
Description
Technical field
The invention relates to the method for adjustment of a kind of digital image pick-up and its image, and particularly relevant for a kind of method of adjustment that digital image pick-up and its image of previewing picture can be provided.
Background technology
Present mobile phone on the market mostly has the function of Digital photographic.When the user utilizes the mobile phone with digital photography function to take pictures, on the display floater of mobile phone, will demonstrate the previewing picture.So-called previewing picture is like the view window of traditional S.L.R, and it can provide the user as the usefulness of finding a view.
For the mobile phone (hereinafter to be referred as camera cell phone) with digital photography function can more be accepted by masses, so its additional function is also more and more powerful.For example, at present partly have a camera cell phone, can allow the user on institute's picked image, directly to carry out image processing, handle and needn't be sent in addition on the processing unit of desktop PC for example.Yet the image processing technique on camera cell phone all can only allow the user that whole image integral body is adjusted at present.Therefore, allow user's intention be restricted,
In addition and since in the camera module on camera cell phone the voltage that photosensitive pixel produced, with the printing opacity performance of the display floater of camera cell phone, the two (linear) relation that is not linear, so need carry out gamma correction (Gamma Correction).Yet on known camera cell phone, the parameter value of gamma correction all is just built-in when camera cell phone is manufactured.Therefore, known camera cell phone is merely able to use the default value when dispatching from the factory, and makes its applicability restricted greatly.
In addition, build in the camera cell phone owing to gamma correction parameters needed value.Therefore, after the developer carries out debug (Debug) to camera cell phone, if find to need adjust the parameter value of gamma correction, must be again that up-to-date parameter value is once built-in again, and very numerous and diverse of built-in flow process.So the efficient of the debug of known camera cell phone is very low.
Summary of the invention
Purpose of the present invention is exactly the digital image pick-up in the method for adjustment that a kind of image is provided and its application, can allow the user according to actual needs, adjusts the parameter of gamma correction voluntarily.
The invention provides a kind of digital image pick-up, comprised camera module and gamma correction circuit.Wherein, camera module is used for capturing external image and produces first signal of video signal to the gamma correction circuit.The gamma correction circuit produces second signal of video signal to a display module after then first signal of video signal being carried out gamma correction, and this display module will convert second signal of video signal to image output.In addition, the present invention also comprises control unit and user's input module.Wherein, the parameter value that the user can be by the correction of user's input module input gamma, and control unit will be controlled the gamma correction circuit according to the parameter value that user's input module is imported first signal of video signal is carried out gamma correction.
In the present invention, camera module has comprised camera lens, colorized optical filtering array (Color Filter Array is called for short CFA), white balance circuit and color correction circuit.Wherein, the colorized optical filtering array has a plurality of optics sensing born of the same parents that arrange in the array mode, is used for the external image that the sensing camera lens captured, and converts electronic signal then to and delivers to white balance circuit.White balance circuit carries out white-balance correction with the output of colorized optical filtering array, and exports the color correction circuit to.The color correction circuit then is that color correction is carried out in the output of white balance circuit, and produces first signal of video signal.In addition, display module has comprised form and aspect change-over circuit, edge strengthening circuit, flat image adjustment circuit and display floater.Wherein, the form and aspect change-over circuit receives the output of gamma correction circuit, second signal of video signal is converted to the signal of brightness (luminance) and chroma (chrominance).Second signal of video signal can see through the edge strengthening circuit and deliver to flat image and adjust circuit then, to adjust the resolution of the image of exporting.Display floater then receives the output that flat image is adjusted circuit, and image output.
In sum, the present invention carries out gamma correction because provide user's input module to import suitable gamma correction value for the user to institute's picked image.Therefore the user can be according to individual's hobby, or the environment of photography is adjusted the gamma correction value voluntarily.In addition, because the present invention is divided into several viewing areas with the previewing picture, and allow the user to adjust the gamma correction value of each viewing area arbitrarily, so the user can handle according to the intention of itself arbitrarily on institute's picked image.
Description of drawings
Fig. 1 is the flow chart of steps of method of adjustment of a kind of image of a preferred embodiment of the present invention.
Fig. 2 is the Organization Chart of a kind of digital image pick-up of a preferred embodiment of the present invention.
Fig. 3 is the schematic diagram of a kind of previewing picture of a preferred embodiment of the present invention.
Fig. 4 is the structure chart of a kind of camera module of a preferred embodiment of the present invention.
Fig. 5 is the structure chart of a kind of display module of a preferred embodiment of the present invention.
Embodiment
Fig. 1 is the flow chart of steps of method of adjustment of a kind of image of a preferred embodiment of the present invention.Please refer to Fig. 1, wherein the method for adjustment of the image of being narrated goes for some digital image pick-ups.For example, digital camera, or intelligent mobile phone etc. has the mobile phone of digital photography function.
Fig. 2 is the Organization Chart of a kind of digital image pick-up of a preferred embodiment of the present invention.Please refer to Fig. 2, the output of camera module 201 is delivered to display module 205 through gamma correction circuit 203.In addition, 207 of user's input modules are to be coupled to control unit 209, to control gamma correction circuit 203 by control unit 209.
Please merge and see figures.1.and.2, when the user utilized the digital image pick-up of Fig. 2 to photograph, display module 205 can provide the previewing picture of the external image that camera module 201 captured to the user, finds a view to make things convenient for the user.At this moment, the user can be as described in the step 101, and the mode that sees through the person's of manipulating input module 207 makes digital image pick-up enter the operation of gamma correction pattern.Then, the user sets a gamma adjusted value as described in the step 103 by user's input module 207.And the gamma adjusted value that control unit 209 will be sent according to user's input module 207 is controlled first signal of video signal that gamma correction circuit 203 produced camera module 201 and is carried out gamma correction, and produces second signal of video signal to display module 205.After the user sets the gamma correction value and finishes, just can withdraw from the operation of gamma correction pattern as described in the step 105.At this moment, display module 205 can convert second signal of video signal to the previewing picture and watches to the user.Therefore, the user can from the previewing picture that display module 205 is provided, determine whether according to the gamma adjusted value of up-to-date input the external image that is captured being carried out gamma correction as described in the step 107.
When the user confirms to determine to come that according to the gamma correction value of up-to-date setting the external image that is captured carried out gamma correction by the previewing picture (" being " that just step 107 indicated), when if the user pressed shutter and captured external image this moment, then gamma correction circuit 203 will be as described in the step 109, according to the gamma adjusted value of up-to-date setting institute's picked image is carried out gamma correction.
If the previewing picture that the user is provided by display module 205, find it is not the result who originally wanted, or (what just step 107 indicated " deny "), then execution in step 111, confirm whether will re-execute step 101 when going back on one's word the situations of not wanting before to have set such as effect.If want to change the effect (" being " that just step 111 indicated) that sets, then the step of repeating step below 101.Otherwise (what just step 111 indicated " denys "), then finishes the flow process of Fig. 1.
Though above-mentioned method of adjustment with Fig. 1 cooperates the digital image pick-up of Fig. 2 to illustrate, only be to have the knack of this skill person and can understand spirit of the present invention really in order to make.Therefore, the method for adjustment of Fig. 1 is not the digital image pick-up that must cooperate Fig. 2 to illustrate.
Fig. 3 is the schematic diagram of a kind of previewing picture of a preferred embodiment of the present invention.Please merge with reference to Fig. 3, the previewing picture 300 that display module 205 is provided can be divided into many for example 302 viewing areas.In the present embodiment, on the vertical axis and trunnion axis of previewing picture 300, have 256 viewing areas respectively and can allow the user to adjust.Therefore, select among the embodiment at another, the user more comprises and selects one of them viewing area to carry out gamma correction from previewing picture 300 after execution of step 101.
Fig. 4 is the structure chart of a kind of camera module of a preferred embodiment of the present invention.Please refer to Fig. 4, in camera module, camera lens 401 is made up of several optical modules, to be used for capturing external image.And 401 picked image of camera lens, can be by 403 sensings of colorized optical filtering array, and convert electronic signal to and deliver to white balance circuit 405.In colorized optical filtering array 403, it has several with the optics sensing born of the same parents that the array mode is arranged, and is used for the image of its position of sensing, and to the electronic signal of converting.Therefore, optics sensing born of the same parents' number the more, then the resolution of digital image pick-up is just high.
In addition, because filmed image ambient light illumination at that time may be too bright or too dark, the color that perhaps may cause photographic image because of the difference (as sunlight, tungsten light, fluorescent lamp etc.) of light source is deviation to some extent, and must make white-balance correction at light source.Therefore, the output of colorized optical filtering array 403 can be delivered to white balance circuit 405 and carry out white-balance correction.And revise signal of video signal later via white balance circuit 405, can deliver to color correction circuit 407 again carries out the action of color correction, and produces first signal of video signal.
Fig. 5 is the structure chart of a kind of display module of a preferred embodiment of the present invention.Please refer to Fig. 5, form and aspect change-over circuit 501 receives second signal of video signal, and the data with the three primary colors (red, green and blue) of representative in second signal of video signal converts brightness and chroma to.Then, edge strengthening circuit 503 is handled the output of form and aspect change-over circuit 501 again, so that the image that display module is exported is distinct more sharp keen.Flat image is adjusted the resolution that circuit 505 can be adjusted the output of edge strengthening circuit 503 then, so that it can be presented on the display floater 507 fully.In the present embodiment, display floater 507 can be a Thin Film Transistor-LCD, also or the low temperature polycrystalline silicon LCD.
In sum, the present invention has following advantage at least:
1. the present invention sets the parameter value of gamma correction because of allowing the user by the person's of manipulating input module, so the present invention can set the parameter value of gamma correction according to actual needs, to take the better digital photos of quality.
2. the present invention allows the viewing area of user more than any one of previewing picture to carry out gamma correction, so the intention that the user more can performance itself, comes picked image is made amendment.
Since the present invention also inreal take digital photos before, just can carry out gamma correction in advance, and can be by the effect of seeing modification on the previewing picture.Therefore,, find to need to adjust the parameter value of gamma correction, only need utilize user's input module to carry out manual correction and get final product, thereby yield of the present invention can improve effectively if after the developer carries out debug to camera cell phone.
Claims (16)
1. digital image pick-up is characterized in that comprising:
One camera module produces one first signal of video signal in order to the acquisition external image;
One gamma correction circuit receives this first signal of video signal, after this first signal of video signal is carried out a gamma correction, and produces one second signal of video signal;
One control unit can be controlled this gamma correction circuit carries out this gamma correction to this first signal of video signal parameter value;
One user's input module couples this control unit, and this control unit is controlled this gamma correction circuit according to the data of being imported by this user's input module; And
One display module is in order to convert this second signal of video signal to image output.
2. digital image pick-up as claimed in claim 1 is characterized in that camera module comprises:
One camera lens is in order to the acquisition external image;
One colorized optical filtering array, the external image that is captured in order to this camera lens of sensing, and convert electronic signal to;
One white balance circuit receives the output of this colorized optical filtering array, in order to carry out a white-balance correction; And
One color correction circuit receives the output of this white balance circuit, in order to carrying out a color correction, and produces this first signal of video signal.
3. digital image pick-up as claimed in claim 2 is characterized in that: this colorized optical filtering array has most optics sensing born of the same parents, arranges in the array mode.
4. digital image pick-up as claimed in claim 1 is characterized in that display module comprises:
Phase transformation circuit of the same colour receives the output of this gamma correction circuit, in order to this second signal of video signal is converted to the signal of brightness (luminance) and chroma (chrominance);
Circuit is strengthened at one edge, couples the output of this form and aspect change-over circuit;
One flat image is adjusted circuit, receives the output of this edge strengthening circuit, to adjust the resolution of the image of exporting; And
One display floater receives the output that this flat image is adjusted circuit, in order to image output.
5. digital image pick-up as claimed in claim 4 is characterized in that: this display floater is divided into multiple display area, and a user can adjust the gamma correction parameter of each those viewing area by operating this user's input interface.
6. digital image pick-up as claimed in claim 4 is characterized in that: this display floater is a Thin Film Transistor-LCD.
7. digital image pick-up as claimed in claim 4 is characterized in that: this display floater is the low temperature polycrystalline silicon LCD.
8. digital image pick-up as claimed in claim 1 is characterized in that: this digital image pick-up comprises digital camera.
9. digital image pick-up as claimed in claim 1 is characterized in that: this digital image pick-up comprises the mobile phone with digital photography function.
10. digital image pick-up as claimed in claim 9 is characterized in that: this digital image pick-up comprises intelligent mobile phone.
11. the method for adjustment of an image is applicable to a digital image pick-up, it is characterized in that: this digital image pick-up provides a previewing picture to find a view for a user, and this method of adjustment comprises the following steps:
Enter the operation of one of this digital image pick-up gamma correction pattern;
Set a gamma adjusted value, so that institute's picked image is carried out gamma correction;
Determine whether coming institute's picked image is carried out gamma correction from this previewing picture according to this gamma adjusted value that sets; And
When decision does not come institute's picked image is carried out gamma correction with this gamma adjusted value of up-to-date setting, and when determining to repeat this gamma correction pattern, then repeat to enter the step of this gamma correction pattern operation.
12. the method for adjustment of image as claimed in claim 11 is characterized in that: this previewing picture has multiple display area.
13. the method for adjustment of image as claimed in claim 12 is characterized in that: after entering gamma correction pattern operation, more comprise select earlier those viewing areas at least one of them to carry out gamma correction.
14. the method for adjustment of image as claimed in claim 11 is characterized in that: this previewing picture is divided into a vertical axis and a trunnion axis, and this vertical axis respectively has 256 values that this user's selection operation is provided with this trunnion axis.
15. the method for adjustment of image as claimed in claim 11 is characterized in that: this digital image pick-up comprises digital camera.
16. the method for adjustment of image as claimed in claim 11 is characterized in that: this digital image pick-up comprises the tool camera-equipped mobile phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510035809 CN1897712A (en) | 2005-07-11 | 2005-07-11 | Image adjusting method and its applied digital image pickup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510035809 CN1897712A (en) | 2005-07-11 | 2005-07-11 | Image adjusting method and its applied digital image pickup device |
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| CN1897712A true CN1897712A (en) | 2007-01-17 |
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| CN 200510035809 Pending CN1897712A (en) | 2005-07-11 | 2005-07-11 | Image adjusting method and its applied digital image pickup device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI394439B (en) * | 2008-10-01 | 2013-04-21 | Altek Corp | A digital still camera with previewing function by picture in picture and method thereof |
| CN107249070A (en) * | 2017-04-21 | 2017-10-13 | 努比亚技术有限公司 | A kind of terminal and gamma adjusting method |
-
2005
- 2005-07-11 CN CN 200510035809 patent/CN1897712A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI394439B (en) * | 2008-10-01 | 2013-04-21 | Altek Corp | A digital still camera with previewing function by picture in picture and method thereof |
| CN107249070A (en) * | 2017-04-21 | 2017-10-13 | 努比亚技术有限公司 | A kind of terminal and gamma adjusting method |
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