CN1232128C - White balance processing apparatus, processing method thereof and digital camera - Google Patents
White balance processing apparatus, processing method thereof and digital camera Download PDFInfo
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Abstract
Provided is a white balance processing apparatus capable of easily adjusting the white balance value having a preferred color with high accuracy, a processing method thereof, and a digital camera employing the same.The white balance processing apparatus is provided with: a white balance processing section 5 for performing white balance processing for a photographing image signal; a histogram detection section 13 for dividing the photographing image signal subjected to the white balance processing by the white balance processing section into the photographing signal in an entire image and a photographing image signal in a histogram target area set over the entire image to apply histogram processing by each of RGB colors to them; and a monitor 15 for displaying a histogram with respect to the entire image and a histogram of the histogram target area by the histogram detection section for comparison purpose, and configured such that a concrete state of white balance is objectively discriminated and the white balance value with high accuracy can easily be adjusted and set.
Description
Technical field
The present invention relates to a kind of can easily objective affirmation photographs white balance (WB) and can adjust the white balance processing unit, its processing method of setting, the digital camera of carrying out the program of its processing method and using them.
Background technology
Camera heads such as digital camera must carry out the white balance adjustment when the chronophotography image.Its white balance method of adjustment has automatic white balance, preset white balance, singly touches methods such as (one touch) white balance and manual white balance adjustment.
Using maximum methods is automatic white balance (AWB), and this method is resolved the photographs of being taken in camera head inside, calculates the color superfine white equilibrium valve, uses the white balance value of being calculated that this photographs is carried out white and handles.But the white balance adjustment is the adjustment to color, and subjective factor is extremely strong, so the theoretical right value that obtains by automatic white balance may not be suitable.
Therefore, be called as the method that the preset white balance is adjusted in addition, this method is stored in appointment in the white balance value (for example with corresponding white balance values such as fluorescent lamp, incandescent lamp and outdoor light sources) the camera head during from product export in advance with the cameraman white balance value carries out white balance and handles.
In addition, be called in addition and singly touch the method that white balance is adjusted, this method is prepared photography to the white subject in the photography environment and to set white balance value, to utilize the white balance value that sets photographs is carried out the white balance processing before photography.
But, these preset white balance adjustment and singly touch the white balance adjustment and may not set and obtain desired color.So, as the prior art of handling about white balance, Te Kaiping 11-355784 communique (patent documentation 1) discloses a kind of digital camera, and this digital camera can select automatic white balance adjustment modes and cameraman to carry out the manual white balance adjustment modes of manual adjustment arbitrarily according to colour temperature information.
In addition, the spy drives the disclosed digital camera of 2002-185972 communique (patent documentation 2), in the image that is presented at digital camera shows with the image on the LCD monitor, can show the achromatization zone with discerning, can confirm simultaneously that this image simultaneously sets suitable white balance.
But the size of LCD monitor that is located at the digital camera back side is little, and also has sun reflection of light when outdoor application.So, shown in above-mentioned patent documentation 2 open, when the image that one side watches the LCD monitor to show is simultaneously set the white balance condition of photographs, the precision deficiency.In addition, also there is individual difference etc. in the colour developing of LCD self, therefore utilizes the display image of the disclosed LCD monitor of above-mentioned communique to confirm white balance and set corrected value that having precision is not good problem.In addition, shown in above-mentioned patent documentation 1 open, the white balance adjustment of carrying out manual adjustment according to colour temperature information has the problem of the concrete state that is difficult to hold white balance.
Summary of the invention
The present invention is used for solving the problems referred to above of existing white balance method of adjustment, its objective is the digital camera that a kind of white balance processing unit that can adjust the white balance value of setting desired color easily objectively accurately and processing method is provided and uses them.
In order to address the above problem, invention 1 is a kind of white balance processing unit, and it has: the white balance processing unit, and it carries out white balance to the photographs signal and handles; The color histogram processing unit, it carries out the histogram of each color component and handles according to carried out the described photographs signal that white balance is handled by this white balance processing unit; And display unit, it shows the histogram of each color component that is obtained by this color histogram processing unit processes.
Description of drawings
Fig. 1 is the block diagram of formation of the digital camera of the expression execution mode of having used the white balance processing unit that the present invention relates to.
Fig. 2 is the key diagram that contrasts the existing white balance processing method of expression for the basic skills that the white balance processing that the present invention relates to is described.
Fig. 3 is the key diagram that is used to illustrate the basic skills of the white balance processing that the present invention relates to.
Fig. 4 is the flow chart of setting action that is used for the white balance value of key diagram 1 illustrated embodiment.
Fig. 5 is the key diagram that is used to illustrate the action of flow chart shown in Figure 4.
Fig. 6 is the flow chart of setting action that is used for the white balance corrected value of key diagram 1 illustrated embodiment.
Fig. 7 is the key diagram that is used to illustrate the action of flow chart shown in Figure 6.
Fig. 8 is the flow chart that is used for the setting action of singly touching white balance value of key diagram 1 illustrated embodiment.
Fig. 9 is the key diagram that is used to illustrate the action of flow chart shown in Figure 8.
To be expression show the key diagram of the state when adjusting that is used to expose to histogram to Figure 10.
Figure 11 is the key diagram that expression makes the transportable state of histogram subject area of histogram demonstration.
Embodiment
Below, execution mode is described.Fig. 1 is the general block diagram of the digital camera of expression the 1st execution mode of having used the white balance processing unit that the present invention relates to and processing method thereof.In Fig. 1,1 expression makes the lens of shot object image imaging, 2 expressions are converted to the incident shot object image imaging apparatuss such as CCD of electric signal, 3 expression controls are from the gain of the image pickup signal of imaging apparatus 2 and the AGCA/D change-over circuit that carries out the A/D conversion, 4 expressions comprise the signal processing circuit of white balance processing unit 5,6 expressions detect the white balance value detecting unit of white balance value according to photographic image data, the preset white equilibrium valve memory cell that 7 expressions are made of nonvolatile memories such as flash memory that stores predefined preset white equilibrium valve when the product export and EEPROM, 8 expressions by store by described later touch singly that white balance value sets that the RAM that singly touches white balance value that processing obtains constitutes singly touch the white balance value memory cell, 9 expressions are used to proofread and correct the automatic white balance value (AWB value) that is detected by white balance value detecting unit 6, or be stored in preset white equilibrium valve in the preset white equilibrium valve memory cell 7, or be stored in the white balance correcting unit that singly touches white balance value that singly touches in the white balance value memory cell 8, the automatic white balance value (AWB value) that 10 expressions detect the preset white equilibrium valve with by the white balance processing unit and singly touch white balance value and switch the white balance input diverter switch that is input to white balance correcting unit 9,11 represent to control and singly touch white balance value and singly touch the white balance input switch to the ON/OFF of the input of singly touching white balance value memory cell 8.
In addition, white balance value after 12 expression memory by using are proofreaied and correct by white balance correcting unit 9 carries out the video memory of the view data after white balance is handled at white balance processing unit 5,13 expressions use the view data of reading from video memory 12 to detect the histogrammic histogram detecting unit of Luminance Distribution of each color of RGB, 14 expressions are being stored in the view data in the video memory 12 and being presented at display circuit on the monitor 15 by each color histogram of RGB that the histogram detecting unit detects, the compression processing circuit of processing is compressed in 16 expressions to the view data of reading from video memory 12, Imagery Data Recording after compression is handled in 17 expressions is in media such as storage card 18, or from medium 18, read the record image data sensing element, the decompression circuit of decompression is carried out in 19 expressions to the view data of reading from medium 18,20 expression controls respectively constitute the CPU of unit, 21 expressions can be carried out automatically at this operation input unit 21 the operation input unit that CPU 20 carries out various inputs, default, singly touch the switching of each white balance pattern, white balance value is set, the selection indication etc. that actions menu is respectively handled in white balance value setting etc. is proofreaied and correct and is singly touched in white balance.
Below, illustrate that action is handled in the white balance of the digital camera of the execution mode of having used this formation.At first, the elemental motion that the white balance that the present invention relates to is handled is handled with white balance in the past and is compared explanation.White balance value is in the past set as previously described, as shown in Figure 2, show that on monitor preview image (draw: when promptly taking by ス Le one, be presented at the electronic viewfinder image on LCDs etc.) time, in this preview image display frame, carry out automatically, fine day, cloudy day, fluorescent lamp, electric light, singly the demonstration of white balance mode initialization menu such as touch, the user simultaneously observes the preview image on the monitor, and one side selects to set the white balance pattern that sees fit from above-mentioned white balance mode initialization menu.
This setting means is in the past simultaneously observed preview image and is simultaneously judged, so there is following shortcoming: the little picture with monitor is difficult for observing and difficult judgment, reflection owing to monitor surface makes that display frame is difficult for observing when outdoor application in addition, monitor self has color in addition, produces deviation with actual color.
Relative therewith, the present invention shows on monitor in the preview image when carrying out the white balance mode initialization, make preview image each color of RGB histogram (Luminance Distribution) and be presented on the monitor picture.The user simultaneously observes histogram and shows, the distribution of color of each color of the objective judgement of one side RGB can set the color superfine white equilibrium valve, thereby the shortcoming that exists is set in the white balance that can eliminate in the past.
Promptly, shown in Fig. 3 (A), on the preview image that is shown on the monitor, the histogram of each color of RGB that demonstration obtains from preview image integral body, and calculate the Luminance Distribution (histogram) of each color of RGB of the histogram object of representing with the two-wire square frame sign of the picture central authorities of preview image, on the histogram of picture integral body, show with black region.The histogram of the picture integral body when Fig. 3 (A) expression white balance mode initialization menu is chosen as fine day and the Luminance Distribution of histogram subject area, the low side of peak deflection of the Luminance Distribution of the R of subject area, the high side of peak deflection of the Luminance Distribution of B, can judge objectively that thus the color of the subject area of preview image turns blue a bit, when the subject of histogram subject area is white, can distinguish that the setting of being carried out is inappropriate white balance value that colour temperature is lower than the actual color temperature.
On the other hand, the histogram of the picture integral body when Fig. 3 (B) expression white balance mode initialization menu is chosen as the cloudy day and the Luminance Distribution of histogram subject area, the high side of peak deflection of the Luminance Distribution of the R of subject area, the low side of peak deflection of the Luminance Distribution of B, the color of subject area that can judge preview image thus objectively is rubescent a bit, when the subject of histogram subject area is white, can distinguish that the setting of being carried out is inappropriate white balance value that colour temperature is higher than the actual color temperature.
Relative therewith, Fig. 3 (C) expression white balance mode initialization menu is chosen as the histogram of the picture integral body when automatic and the Luminance Distribution of histogram subject area, the peak that each colour brightness of subject area distributes concentrates on same position, and what can confirm objectively thus to set is suitable white balance value.Wherein, white balance mode initialization menu is chosen as when automatic, display setting be suitable white balance value, but be chosen as other white balance mode initialization menus, for example during fluorescent lamp, shown in Fig. 3 (C), when the peak that each colour brightness for white subject subject area distributes concentrated on same position, the white balance mode initialization menu that select to set this moment was that fluorescent lamp is suitable white balance pattern.
Below, illustrate that action is handled in the white balance of present embodiment.White balance that the user can carry out is handled action and roughly is divided into white balance value and sets and handle action, white balance value corrective action and singly touch white balance value and set and handle three kinds of actions.At first, set the processing action according to flowchart text white balance value shown in Figure 4.Set and handle action in order to carry out this white balance value, set indication, open this menu by operation input unit 21 input white balance values, on the monitor 15 at first the display white equilibrium valve set picture (step S1).At this moment, as shown in Figure 5, preview image is presented on the monitor 15, picture right side display white balanced mode menu, and the histogram of each color of RGB of the whole and histogram subject area of the picture of the preview image that detects with histogram detecting unit 13 is presented on the left of the picture.Then, accept user's cross key operation (step S2), after the input cross key, the user sets white balance pattern (step S3) according to automatic WB, fine day, cloudy day, fluorescent lamp, electric light, the selective sequential of singly touching.When the determination step S1 in cross key does not operate cross key,, change the selection determination step S4 of automatic white balance described later over to because default setting is the automatic white balance pattern.
When the white balance model selection is automatic white balance (step S4), utilize white balance value detecting unit 6 to detect white balance value and output (step S5) from preview image.During the preset white balanced mode of the fine day beyond selecting to be set at automatic white balance, cloudy day, fluorescent lamp, electric light (step S6), adjust the preset white equilibrium valve (step S7) that is stored in the preset white equilibrium valve memory cell 7 when reading out in product export.When selecting to be set at when singly touching the white balance pattern, read the user and utilize in advance and singly touch white balance value and set and handle action and obtain and be stored in singly to touch and singly touch white balance value (step S8) in the white balance value memory cell 8.
Then, in order to carry out inching (describing in detail later on), automatic white balance value, the preset white equilibrium valve that to select by above-mentioned each white balance mode initialization and singly touch any input white balance correcting unit 9 in the white balance value carried out the correction (step S9) of the white balance value that above-mentioned selection sets.Afterwards, use the white balance value of being proofreaied and correct, utilize 5 pairs of photographic image datas that obtain from CCD imaging apparatus 2 of white balance processing unit to carry out white balance and handle (step S10).
Image data storage after will carrying out white balance and handling is read the view data of being stored, and is presented at (step S11) on the monitor 15 as photographs in video memory 12.Meanwhile, to being stored in the view data in the video memory 12, the histogram that carries out each color of RGB of picture integral body and histogram subject area at histogram detecting unit 13 detects, and the histogram of resulting each color of RGB is presented at (step S12) on the photographs that is shown on the monitor 15 in the lump.Before the user presses OK key on the menu screen, repeat above action step (step S13).After the selection setting that is presented at the histogram affirmation color superfine white equilibrium valve on the monitor, press the OK key, the setting release of white balance value, white balance pattern menu on the monitor 15 and histogram show disappearance, return common preview image and show (step S14).
Like this, when the setting action of carrying out white balance value, can one side set the histogram of each color of RGB on the picture with reference to being presented at white balance value, one side is held concrete white balance state, carries out high-precision white balance value and sets.
Below, move according to the white balance treatment for correcting that the aforesaid white balance correcting unit 9 of the flowchart text of Fig. 6 carries out.The user handles for this white balance value being carried out inching, utilizes operation input unit 12 to specify the action of white balance treatment for correcting, open this menu after, display white balance correction picture (step S21) on monitor 15.At this moment, as shown in Figure 7, show that the white balance value that utilizes aforesaid white balance value shown in Figure 4 to set the selected setting of action carries out the preview image after white balance is handled, the picture right side shows by the gain that can move from indigo plant to the red shift adjusts the white balance correction menu that knob constitutes, the histogram of the picture integral body of the preview image that the demonstration of picture left side is detected with histogram detecting unit 13 and each color of RGB of histogram subject area.
Then, carry out the change adjustment (step S23) of white balance corrected value according to user's cross key operation (step S22).The change adjustment of this white balance corrected value is the histogram by each color of RGB in reference monitor display frame of user, and one side up and down actual gain is adjusted the gain adjustment that knob carries out Lan Jihong and realized.That is, when strengthening blueness, gain adjustment knob slided above blue side direction, setting the corrected value of emphasizing blueness by improving the red gain of indigo plant gain reduction.On the other hand, when emphasizing redness, making gains adjusts knob eosine side direction slid underneath, sets the corrected value of emphasizing redness by reducing the red gain of blue gain raising.Utilize the such white balance corrected value of setting of user, set the white balance value (automatically, presetting, singly touch white balance value) of the selected settings of action at 9 pairs of white balance values shown in Figure 4 in front of white balance correcting unit and proofread and correct (step S24).When above-mentioned cross key determination step S21 does not operate cross key, change above-mentioned white balance aligning step S24 over to.
Later action is moved identical with front white balance value setting shown in Figure 4, at first use the white balance corrected value that obtains in a manner described, carry out white balance at 5 pairs of photographic image datas that obtain from CCD imaging apparatus 2 of white balance processing unit and handle (step S25).Then, the image data storage that will carry out the white balance processing is read the view data of being stored, and is presented at (step S26) on the monitor 15 as photographs in video memory 12.Meanwhile, to being stored in the view data in the video memory 12, the histogram that carries out each color of RGB of picture integral body and histogram subject area at histogram detecting unit 13 detects, and the histogram of resulting each color of RGB is presented at (step S27) on the photographs that is shown on the monitor 15 in the lump.Before the user presses OK key on the menu screen, repeat above action step (step S28).After one side is observed the histogram be presented on the monitor and simultaneously confirmed the setting of color superfine white balance correction value, press the OK key, the white balance value corrective action finishes (step S29).
Like this, when the setting action of carrying out the white balance corrected value, also be that one side is set the histogram of each color of RGB on the picture with reference to being presented at the white balance corrected value, one side adjustment is set white balance correction menu (knob is adjusted in gain), carry out objective judgement so can utilize histogram to show, set high-precision white balance corrected value simultaneously.
Below, the setting processing action of touching white balance value according to the flowchart text list of Fig. 8.Automatic white balance value or preset white equilibrium valve are the automatic value of measuring of camera or the value of the setting of adjusting when camera dispatches from the factory, and this singly to touch white balance value be to utilize the light source in photography place to take white subject, paper etc. for example, the user adjusts and sets white balance value so that the photographs on the monitor display surface becomes white.
That is, at first, the user is in order singly to touch the setting of white balance value, and indication is singly touched white balance value and set the processing action and open the setting menu, shows that on monitor 15 singly touching white balance value sets picture (step S31).At this moment, as shown in Figure 9, taking has the preview image of blank sheet of paper to be presented on the monitor, the histogram of the picture integral body of this preview image of picture left side demonstration and each color of RGB of histogram subject area, and the picture lower right side shows that " setting → OK " singly touches the setting menu.Then, press OK key (step S32), enter the new white balance value that singly touches and set action, detecting the shooting that monitor 15 is shown according to the CCD image pickup signal at white balance detecting unit 6 has the camera picture of blank sheet of paper to become the white balance value (step S33) of white.The white balance value that the detected white balance value that singly touches as this place is stored in and singly touches (step S34) in the white balance value memory cell 8.Afterwards, read to be stored in singly to touch and singly touch white balance value in the white balance value memory cell 8, set white balance corrected value (step S35) at the corrected value (yield value) that white balance correcting unit 9 utilizes the user to set.
When above-mentioned OK key determination step S31 does not press the OK key, use stored singly touch white balance value (step S36), the corrected value of setting white balance correcting unit 9 usefulness users is proofreaied and correct this white balance value of having stored that singly touches equally.Use obtain in a manner described singly touch the white balance corrected value, carry out white balance at 5 pairs of photographic image datas that obtain from CCD imaging apparatus 2 of white balance processing unit and handle (step S37).Image data storage after will carrying out white balance and handling is read the view data of being stored, and is presented at (step S38) on the monitor 15 as photographs in video memory 12.Meanwhile, to being stored in the view data in the video memory 12, the histogram that carries out each color of RGB of picture integral body and histogram subject area at histogram detecting unit 13 detects, and the histogram of resulting each color of RGB is presented at (step S39) on the photographs that is shown on the monitor 15 in the lump.Before, repeat above action step (step S40) pressing end key (for example left side of cross key etc.).In case according to be presented at histogram on the monitor confirm best singly touch the setting of white balance value after, press end key, singly touch the setting release (step S41) of white balance value.
Like this, when singly touching the setting of white balance value, setting white balance value so that be presented at when singly touching white balance value and setting the photographic picture of the blank sheet of paper on the picture and become white, equally can one side with reference to the histogram of shown each color of RGB, one side confirm as desired value objectively.
In the action specification that above-mentioned execution mode relates to, histogram demonstration with each color of RGB is used for white balance value setting, the setting of white balance corrected value or singly touches the white balance value setting, the method of obtaining suitable white balance value or white balance corrected value is illustrated, but above-mentioned histogram shows in the time of also can being used for generally photographing.When general photography, do not need the histogram of each color of RGB, as shown in figure 10, only the histogram of display brightness distribution gets final product, and this Luminance Distribution histogram can be used for adjusting exposure.
In the explanation of above-mentioned execution mode, the histogram of each color component is used for detecting and showing trichromatic each color histogram of RGB, but the histogram as each shown color component is not limited to the RGB three primary colors, for example, the effect of G component in the three primary colors in white balance value is set is little, so also it can be omitted, only detect and show the histogram (Luminance Distribution) of R, B component.In addition, also can detect and show Cy (blue-green), the Mg (magenta) of assisted color series, the histogram of three kinds of color components of Ye (yellow), can make the histogram relevant in addition and show with form and aspect component Cb, Cr.
In the above-described embodiment, the display white equilibrium valve is set the whole image of picture or white balance corrected value setting picture and is set in the histogram of the histogram subject area of picture central authorities, but the histogram subject area that fixedly is set in the picture middle section is moved.For example, as shown in figure 11, when the blue sky part above picture is set the histogram object, the Luminance Distribution Smalt brightness height of histogram subject area, red and green for low-light level, can confirm the lightness of blue sky part thus.In addition, for example also can operate histogram object the Show Button and cross key simultaneously and come mobile histogram object.
In the above-described embodiment, to realizing that by action each function of the present invention is illustrated based on each unit of CPU control.On the other hand, utilize the illustrated white balance of each flow chart shown in Fig. 4,6,8 to handle and show and processing capacity also can realize according to the dedicated program that is stored in the not shown nonvolatile memories such as EEPROM that are built in the digital camera in advance by CPU.CPU carries out part or all of processing of the present invention according to this program, and when handling the function that realizes above-mentioned execution mode by this, this program self and the storage medium of having stored this program constitute the present invention.This program also can be from the outside as recording medium or with camera heads such as communication form supply digital cameras.
In the above-described embodiment, the example that is applied in the digital camera has been described, but certainly the present invention also can be applied to the camera part of mobile phone etc.
More than execution mode is illustrated, will gather expression below as the formation of feature of the present invention and based on the effect example of this formation.
Formation as the 1st feature of the present invention is the formation of invention 1 described white balance processing unit, in the white balance processing unit of this formation, according to having carried out the photographs signal that white balance is handled, carrying out the histogram of each color component handles, the histogram of resulting each color component is presented on the display unit, so can hold the concrete state of white balance easily, can easily adjust and set high-precision white balance value.
Formation as the 2nd feature is the formation of invention 2 described white balance processing unit, in the white balance processing unit of this formation, be divided into the whole and specific region part of picture, carry out the histogram of each color component and handle, so carry out integral part and relatively easily as the histogram of each color component of the specific region part of test section.
Formation as the 3rd feature is the formation of invention 3 described white balance processing unit, in the white balance processing unit of this formation, can relatively show the histogram of relevant picture integral body and the histogram of relevant specific region part by color component, so that about the histogram of picture integral body and histogrammic easier the carrying out of specific region part.
Formation as the 4th feature is the formation of invention 4 described white balance processing unit, in the white balance processing unit of this formation, when the display white balance is set picture, the histogram that shows each color component in the lump, so that the histogrammic contrast of picture and each color component is set in white balance carries out easily.
Formation as the 5th feature is the formation of invention 5 described white balance processing unit, in the white balance processing unit of this formation, show the histogram of each color component and the information relevant in the lump with the white balance regularization condition, so that the contrast of the concrete state of white balance and regularization condition carry out easily.
Formation as the 6th feature is the formation of invention 6 described white balance processing unit, in the white balance processing unit of this formation, the information that shows the histogram and the white balance schema category that expression can be selected of each color component in the lump is so simultaneously observing histogram simultaneously selects optional white balance pattern easily.
Formation as the 7th feature is the formation of invention 7 described white balance processing unit, in the white balance processing unit of this formation, the histogram that shows each color component in the lump with the relevant information of ratio of having carried out the specific color component that histogram handles, so carry out the setting of each color component in the white balance easily.
Formation as the 8th feature is the formation of invention 8 described white balance processing unit, in the white balance processing unit of this formation, show the histogram of each color component in the lump and based on the photographs of photographs signal, so can carry out the histogrammic contrast of photographs and each color component, make white balance whether suitable etc. judgement is easier and carry out.
Formation as the 9th feature is the formation of invention 9 described white balance processing unit, in the white balance processing unit of this formation, display white balance detection zone in the photographs that the histogram with each color component shows in the lump, so that the affirmation of white balance surveyed area carry out easily.
Formation as the 10th feature is the formation of invention 10 described white balance processing unit, in the white balance processing unit of this formation, according to prevailing color component is that three kinds of color components of RGB carry out the histogram processing, and showing, so the concrete state of easier assurance white balance.
Formation as the 11st feature is the formation of invention 11 described digital cameras, in the digital camera of this formation, has the white balance processing unit of above-mentioned formation, so can realize improving the digital camera of white balance performance.
Formation as the 12nd feature is the formation of invention 12 described white balance processing methods, in the white balance processing method of this formation, the histogram and the photographs of each color component are shown simultaneously, so can carry out the histogrammic contrast of photographs and each color component, the judgement such as whether suitable of white balance is carried out easily, can be carried out white balance simultaneously and handle.
Formation as the 13rd feature is the formation of invention 13 described programs, can realize the white balance processing of above-mentioned the 12nd feature with software according to the program of this formation.
Shown in the explanation of doing according to above execution mode, if adopt the present invention, according to having carried out the photographs signal that white balance is handled, carrying out the histogram of each color component handles, the histogram of resulting each color component is presented on the display unit, so concrete state that can easily objective assurance white balance can carry out the setting and the correction of white balance value reliably with high accuracy.
Claims (12)
1. white balance processing unit is characterized in that having:
The white balance processing unit, it carries out white balance to the photographs signal and handles;
The color histogram processing unit, it carries out the histogram of each color component and handles according to carried out the described photographs signal that white balance is handled by this white balance processing unit; With
Display unit, it shows the histogram of each color component that is obtained by this color histogram processing unit processes.
2. white balance processing unit as claimed in claim 1, it is characterized in that, it is the described photographs signal of picture integral body and the described photographs signal that is set in specific region part in the picture that described color histogram processing unit will carry out the described photographs division of signal that white balance handles by this white balance processing unit, carries out the histogram of each color component and handles.
3. white balance processing unit as claimed in claim 2, it is characterized in that described display unit shows the histogram of the relevant described picture integral body that is obtained by described color histogram processing unit processes and the histogram of relevant specific region part comparably by color component.
4. as each described white balance processing unit in the claim 1～3, it is characterized in that, has indicative control unit, when this indicative control unit is presented on the described display unit at the setting picture that will be used to set white balance, control the histogram that makes described display unit show described each color component.
5. as each described white balance processing unit in the claim 1～3, it is characterized in that described display unit shows the information relevant with the white balance regularization condition of described white balance processing unit in the lump.
6. white balance processing unit as claimed in claim 5 is characterized in that, the described information relevant with the white balance regularization condition is the kinds of information of the selectable white balance pattern of expression.
7. white balance processing unit as claimed in claim 5 is characterized in that, the described information relevant with the white balance regularization condition is the information of being correlated with the ratio of the specific color component that has carried out described histogram processing.
8. as each described white balance processing unit in the claim 1～3, it is characterized in that described display unit also shows the photographs based on described photographs signal in the lump.
9. white balance processing unit as claimed in claim 8 is characterized in that, described display unit is display white balance detection zone in described photographs also.
10. as each described white balance processing unit in the claim 1～3, it is characterized in that described color histogram processing unit carries out histogram by red/green/blue three-color component to be handled.
11. a digital camera is characterized in that, is equipped with as each described white balance processing unit in the claim 1～3.
12. a white balance processing method is characterized in that,
The photographs signal is carried out white balance handles,
According to having carried out the described photographs signal that described white balance is handled, carry out the histogram of each color component and handle,
The histogram of described each color component and photographs based on described photographs signal are shown simultaneously.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP334852/2002 | 2002-11-19 | ||
| JP2002334852A JP4090851B2 (en) | 2002-11-19 | 2002-11-19 | White balance processing apparatus, white balance processing method, and digital camera |
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| Publication Number | Publication Date |
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| CN1503575A CN1503575A (en) | 2004-06-09 |
| CN1232128C true CN1232128C (en) | 2005-12-14 |
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| CN 03125574 Expired - Fee Related CN1232128C (en) | 2002-11-19 | 2003-09-19 | White balance processing apparatus, processing method thereof and digital camera |
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| JP (1) | JP4090851B2 (en) |
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| CN106101680A (en) * | 2015-05-06 | 2016-11-09 | 小米科技有限责任公司 | Acquisition parameters method to set up and device |
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| JP4488508B2 (en) * | 2004-09-16 | 2010-06-23 | 株式会社リコー | Imaging system |
| JP4541859B2 (en) * | 2004-12-08 | 2010-09-08 | サムスン・デジタル・イメージング・カンパニー・リミテッド | Camera and luminance distribution display method |
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| JP4996161B2 (en) * | 2006-07-25 | 2012-08-08 | キヤノン株式会社 | Imaging apparatus and imaging method |
| JP5256752B2 (en) * | 2008-01-28 | 2013-08-07 | 株式会社ニコン | Digital camera |
| JP5272206B2 (en) * | 2008-04-22 | 2013-08-28 | 株式会社ザクティ | Image processing apparatus, image processing method, and imaging apparatus |
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| JP5366584B2 (en) * | 2009-02-16 | 2013-12-11 | キヤノン株式会社 | Imaging apparatus, image processing method, and program |
| JP5454158B2 (en) * | 2010-01-15 | 2014-03-26 | カシオ計算機株式会社 | Imaging apparatus, control method thereof, and program |
| JP6249678B2 (en) * | 2013-08-21 | 2017-12-20 | キヤノン株式会社 | Display control apparatus, control method therefor, program, and storage medium |
| GB2531440B (en) | 2013-08-21 | 2016-10-26 | Canon Kk | Image capturing apparatus and control method thereof |
| KR20160056928A (en) | 2013-11-08 | 2016-05-20 | 누비아 테크놀로지 컴퍼니 리미티드 | White balance adjustment method and device |
| JP6302554B2 (en) * | 2014-07-08 | 2018-03-28 | 富士フイルム株式会社 | Image processing apparatus, imaging apparatus, image processing method, and image processing program |
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-
2002
- 2002-11-19 JP JP2002334852A patent/JP4090851B2/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106101680A (en) * | 2015-05-06 | 2016-11-09 | 小米科技有限责任公司 | Acquisition parameters method to set up and device |
| US10079971B2 (en) | 2015-05-06 | 2018-09-18 | Xiaomi Inc. | Method and device for setting shooting parameter |
| CN106101680B (en) * | 2015-05-06 | 2018-12-25 | 小米科技有限责任公司 | Acquisition parameters setting method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004172817A (en) | 2004-06-17 |
| CN1503575A (en) | 2004-06-09 |
| JP4090851B2 (en) | 2008-05-28 |
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