CN104767984A - Color temperature adjusting method for flash lamp and terminal - Google Patents
Color temperature adjusting method for flash lamp and terminal Download PDFInfo
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Abstract
The embodiment of the invention discloses a color temperature adjusting method for a flash lamp and a terminal. The method includes the steps that the color temperature value of a preview image in the current light environment is acquired in the photographing mode when the flash lamp is in a started state; if the acquired color temperature value ranges from a high color temperature threshold value to a low color temperature threshold value, the flash lamp is adjusted to be a middle color temperature flash lamp, wherein the high color temperature threshold value is larger than the low color temperature threshold value, and the color temperature value of the middle color temperature flash lamp ranges from the high color temperature threshold value to the low color temperature threshold value. By means of the color temperature adjusting method for the flash lamp and the terminal, the color temperature of the flash lamp can be adjusted, and the photographing effect is improved.
Description
Technical field
The present invention relates to intelligent terminal technical field, particularly relate to a kind of photoflash lamp color temperature adjusting method and terminal.
Background technology
Along with the configuration of taking pictures of terminal is more and more higher, user more and more likes using terminal to take pictures, wherein, the photoflash lamp of taking pictures in configuration, it is requisite key configuration of taking pictures, when ambient light undercapacity, user can use photoflash lamp to carry out auxiliary photo-taking, to obtain effect of taking pictures preferably.At present, modal photoflash lamp is high color temperature photoflash lamp.Find in practice, high color temperature photoflash lamp can shoot good effect under high color temperature scene, but, when high color temperature photoflash lamp is under low colour temperature scene, the photo of taking pictures out or subregion are partially blue, or subregion is partially red, this is because when high color temperature photoflash lamp is under low colour temperature scene, be equivalent to a hybrid light source, this hybrid light source cannot simulate the luminous environment of current scene of taking pictures, so that effect of taking pictures is bad.
Summary of the invention
Embodiments provide a kind of photoflash lamp color temperature adjusting method and terminal, the colour temperature of photoflash lamp can be regulated, improve effect of taking pictures.
Embodiment of the present invention first aspect discloses a kind of photoflash lamp color temperature adjusting method, comprising:
Under exposal model, when photoflash lamp is in opening, obtain the color temperature value of the current luminous environment of preview image;
If the described color temperature value got is between high color temperature threshold value and low colour temperature threshold value, photoflash lamp is regulated to be middle colour temperature photoflash lamp, wherein, described high color temperature threshold value is greater than described low colour temperature threshold value, and the color temperature value of described middle colour temperature photoflash lamp is between described high color temperature threshold value and described low colour temperature threshold value.
Embodiment of the present invention second aspect discloses a kind of terminal, comprising:
Acquiring unit, under exposal model, when photoflash lamp is in opening, obtains the color temperature value of the current luminous environment of preview image;
Regulon, for when the described color temperature value that gets when described acquiring unit is between high color temperature threshold value and low colour temperature threshold value, photoflash lamp is regulated to be middle colour temperature photoflash lamp, wherein, described high color temperature threshold value is greater than described low colour temperature threshold value, and the color temperature value of described middle colour temperature photoflash lamp is between described high color temperature threshold value and described low colour temperature threshold value.
In the embodiment of the present invention, terminal is under exposal model, when photoflash lamp is in opening, obtain the color temperature value of the current luminous environment of preview image, when the color temperature value got is between high color temperature threshold value and low colour temperature threshold value, terminal regulates photoflash lamp to be middle colour temperature photoflash lamp, wherein, this high color temperature threshold value is greater than this low colour temperature threshold value, and the color temperature value of middle colour temperature photoflash lamp is between this high color temperature threshold value and this low colour temperature threshold value.By the embodiment of the present invention, when the colour temperature of the current luminous environment of preview image is normal color temperature, terminal can regulate photoflash lamp to be middle colour temperature photoflash lamp, to make the colour temperature of the colour temperature of photoflash lamp and current luminous environment be consistent, thus can improve effect of taking pictures.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of a kind of photoflash lamp color temperature adjusting method disclosed in the embodiment of the present invention;
Fig. 2 is the schematic flow sheet of another kind of photoflash lamp color temperature adjusting method disclosed in the embodiment of the present invention;
Fig. 3 is the schematic flow sheet of another kind of photoflash lamp color temperature adjusting method disclosed in the embodiment of the present invention;
Fig. 4 is the structural representation of a kind of terminal disclosed in the embodiment of the present invention;
Fig. 5 is the structural representation of another kind of terminal disclosed in the embodiment of the present invention;
Fig. 6 is the structural representation of another kind of terminal disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of photoflash lamp color temperature adjusting method and terminal, the colour temperature of photoflash lamp can be regulated, improve effect of taking pictures.Below be described in detail respectively.
In the embodiment of the present invention, terminal can comprise any photo terminal with photoflash lamp configuration, as smart mobile phone, panel computer, notebook computer, palmtop PC etc. terminal.Wherein, the operating system of this terminal can include but not limited to Android operation system, IOS, Symbian (Saipan) operating system, Black Berry (blackberry, blueberry) operating system, Windows Phone8 operating system etc., and the embodiment of the present invention does not limit.
Refer to Fig. 1, Fig. 1 is the schematic flow sheet of a kind of photoflash lamp color temperature adjusting method disclosed in the embodiment of the present invention.As shown in Figure 1, the method can comprise the following steps:
S101, under exposal model, when photoflash lamp is in opening, obtain the color temperature value of preview image current luminous environment.
In the embodiment of the present invention, colour temperature is the color that light sends, i.e. the color of light source light spectrum composition.The unit of colour temperature represents with (K), when the color of light is partially blue or green, blue or bluish violet time, usual title it be high color temperature, when the color of light is partially red, orange, yellow, usual title it be low colour temperature, when the color of light is white, usually claim it be normal color temperature (i.e. middle colour temperature), wherein, any one color only just can obtain the normal color of self under the light of white irradiates.
Usually, the color temperature value of high color temperature is generally not less than 5000K, and the color temperature value of low colour temperature is generally not more than 3100K, and the color temperature value of middle colour temperature is between 3100K and 5000K.
As the optional execution mode of one, the specific implementation of step S101 can comprise the following steps:
11) rgb value of the current luminous environment of preview image is obtained;
12) color temperature value that the rgb value of the current luminous environment of described preview image is corresponding is determined.
In this embodiment, terminal can pass through RGB (red, green, blue) value that special algorithm (as white balance algorithm) calculates the current luminous environment of preview image, and further by this rgb value, determine the color temperature value that the rgb value of the current luminous environment of preview image is corresponding.Wherein, this RGB (red, green, blue) value respectively has 256 grades of brightness, with numeral be from 0,1,2......255, the color of any light source can be mixed according to different ratios by these three kinds of coloured light.
As the optional execution mode of another kind, above-mentioned steps 12) specific implementation can be:
According to the mapping relations of the RGB obtained in advance and colour temperature, from described mapping relations, select the color temperature value that the rgb value of the current luminous environment of described preview image is corresponding.
In this embodiment, above-mentioned mapping relations can be calculated in advance by experiment, and the operational order that also can be inputted by user is generated, and the embodiment of the present invention is not construed as limiting.
As the optional execution mode of another kind, above-mentioned steps 12) specific implementation can be:
By white balance algorithm, calculate the color temperature value that the rgb value of the current luminous environment of described preview image is corresponding.
In this embodiment, white balance describes the index that the mixing of red, green, blue three primary colors generates rear white accuracy, and white balance algorithm can with the series of problems solving color rendition and tone process.The algorithm that white balance is commonly used can include but not limited to grey world, perfect inverse method and the algorithm etc. based on automatic threshold process white balance.
As the optional execution mode of one, before step S101, described method can also comprise the following steps:
21) exposal model open command is received;
22) respond exposal model open command, open exposal model.
In this embodiment, this exposal model open command can be the exposal model open command receiving user's input, such as: the exposal model that user clicks terminal is released the button, or, above-mentioned exposal model open command can be the exposal model open command that terminal generates automatically, such as: the exposal model open command automatically entering exposal model at special time.
As the optional execution mode of another kind, above-mentioned steps 21) and step 22) embodiment can comprise the following steps:
21) exposal model open command is received;
22) export information, this information is for pointing out input information to be verified;
23) information to be verified of this information of response input is received;
24) verify that whether this information to be verified is consistent with the default authorization information pre-set;
25) if verify, this information to be verified is consistent with default authorization information, then respond this exposal model open command, opens exposal model.
In this embodiment, after terminal receives exposal model open command, output is used for pointing out the information inputting information to be verified by terminal; And terminal can export the information input port to be verified for inputting information to be verified.
In this embodiment, this information to be verified can include but not limited to any one or a few the combination in password to be verified, finger print information to be verified, shape of face information to be verified, iris information to be verified, retinal information to be verified and voiceprint to be verified.
In this embodiment, this default authorization information pre-set can include but not limited to default authentication password, presets checking finger print information, preset checking shape of face information, presets checking iris information, presets checking retinal information and preset any one or a few the combination in checking voiceprint.
Optionally, in this embodiment, above-mentioned default authorization information can comprise fingerprint string information and input time corresponding to each fingerprint; So correspondingly, verify that whether information to be verified is consistent with default authorization information can comprise the following steps:
Whether checking fingerprint string is identical with the fingerprint string that default authorization information comprises, and whether the difference of the input time of identical fingerprints is all less than preset value, if checking fingerprint string is identical with the fingerprint string that default authorization information comprises, and the difference of the input time of identical fingerprints is all less than preset value, so can verify that information to be verified is consistent with default authorization information; Otherwise, verify information to be verified and default authorization information inconsistent.Wherein, by implementing this execution mode, can prevent disabled user from terminal, opening exposal model, thus can effectively prevent terminal from wantonly being operated by disabled user.
Optionally, in this embodiment, above-mentioned default authorization information can comprise encrypted message and biological information (combination of any one or several in finger print information, shape of face information, iris information, retinal information and voiceprint), so correspondingly, verify that whether information to be verified is consistent with default authorization information can comprise the following steps:
Whether the encrypted message of checking input is identical with the encrypted message preset, when verifying that the encrypted message of input is identical with the encrypted message preset, whether the biological information of checking input is identical with the biological information preset, if the biological information of checking input is identical with the biological information preset, so can verify that information to be verified is consistent with default authorization information; Otherwise, if the biological information of checking input is not identical with default biological information, so can verify information to be verified and default authorization information inconsistent.Wherein, by implementing this execution mode, can prevent invalid user stealing encrypted message from opening exposal model, thus can effectively prevent terminal from wantonly being operated by disabled user.
If the color temperature value that S102 gets is between high color temperature threshold value and low colour temperature threshold value, photoflash lamp is regulated to be middle colour temperature photoflash lamp.
In the embodiment of the present invention, because colour temperature is divided into high color temperature, middle colour temperature and low colour temperature three kinds, the colour temperature of luminous environment that therefore terminal gets also has three kinds.When the color temperature value got is between high color temperature threshold value and low colour temperature threshold value, the colour temperature of the light source provided to make photoflash lamp and the colour temperature of luminous environment are consistent, and need colour temperature photoflash lamp in unlatching.Wherein, above-mentioned high color temperature threshold value is greater than above-mentioned low colour temperature threshold value, as: high color temperature threshold value is 5000K, and low colour temperature threshold value is 3100K, and color temperature value of colour temperature photoflash lamp is between this high color temperature threshold value and this low colour temperature threshold value in this, suppose that high color temperature threshold value is A, low colour temperature threshold value is B, and the color temperature value of middle colour temperature photoflash lamp is C, so correspondingly, just have relational expression A>C>B, wherein, A, B, C are the positive integer being greater than 0.
It should be noted that, the photoflash lamp provided in the embodiment of the present invention can contain three kinds of colour temperatures (high color temperature, middle colour temperature and low colour temperature), therefore corresponding photoflash lamp just has high color temperature photoflash lamp, middle colour temperature photoflash lamp and low colour temperature photoflash lamp, terminal can select the photoflash lamp of corresponding colour temperature according to the change of the colour temperature of ambient light conditions, to ensure the effect that photoflash lamp is taken pictures.
S103, according to the colour temperature that obtains the in advance corresponding relation with white balance, determine the white balance value that the color temperature value of the photoflash lamp after adjustment is corresponding.
In the embodiment of the present invention, under various different light status, object color can change because throw light color produces, and the photo shot under the occasion of different light rays has different colour temperatures.In this respect, white object changes the most obvious: under indoor tungsten light, and white object seems can with crocus tone, and the scenery taking out under such illumination condition will be partially yellow; But if under azure sky, then can with blue color, the scenery taking out under such illumination condition can be partially blue.In order to reduce the impact that external light causes color of object as far as possible, can restore the original color of target subject under different colour temperature conditions, just needing to carry out colour correction, to reach correct color balance, this is just called white balance adjusting.
Visible, white balance adjusting is related to the normal reduction of color and the utilization of tone, can think that white balance is exactly the manager of colour temperature, therefore, needs the white balance value that the color temperature value of the photoflash lamp after obtaining adjustment is corresponding.
In the embodiment of the present invention, this corresponding relation can calculate in advance by experiment, or generated by the operational order that user inputs, the embodiment of the present invention is not construed as limiting.
S104, according to white balance value, white balance adjusting is carried out to preview image.
In the embodiment of the present invention, white balance generally has various modes, is used for adapting to different scene capture, as Automatic white balance, tungsten light white balance, fluorescence white balance, indoor white balance, manual adjustments etc.Regardless of the white balance of which kind of pattern, it has a corresponding white balance value.White balance value corresponding to white balance mode that terminal can be selected according to user, carries out white balance adjusting to preview image, to make the color of preview image obtain normal reduction, improves the effect of taking pictures, meets the esthetic requirement of user.
In the method flow described by Fig. 1, terminal is under exposal model, when photoflash lamp is in opening, obtain the color temperature value of the current luminous environment of preview image, when the color temperature value got is between high color temperature threshold value and low colour temperature threshold value, terminal regulates photoflash lamp to be middle colour temperature photoflash lamp, wherein, this high color temperature threshold value is greater than this low colour temperature threshold value, and the color temperature value of middle colour temperature photoflash lamp is between this high color temperature threshold value and this low colour temperature threshold value.By the embodiment of the present invention, when the colour temperature of the current luminous environment of preview image is normal color temperature, terminal can regulate photoflash lamp to be middle colour temperature photoflash lamp, to make the colour temperature of the colour temperature of photoflash lamp and current luminous environment be consistent, thus can improve effect of taking pictures.
Refer to Fig. 2, Fig. 2 is the schematic flow sheet of another kind of photoflash lamp color temperature adjusting method disclosed in the embodiment of the present invention.As shown in Figure 2, the method can comprise the following steps:
S201, terminal, under exposal model, when photoflash lamp is in opening, obtain the color temperature value of the current luminous environment of preview image.
If the color temperature value that S202 gets is more than or equal to high color temperature threshold value, terminal regulates photoflash lamp to be high color temperature photoflash lamp.
In the embodiment of the present invention, because colour temperature is divided into high color temperature, middle colour temperature and low colour temperature three kinds, the colour temperature of luminous environment that therefore terminal gets also has three kinds.When the color temperature value got is more than or equal to high color temperature threshold value, the colour temperature of the light source provided to make photoflash lamp and the colour temperature of luminous environment are consistent, and terminal needs to regulate photoflash lamp to be high color temperature photoflash lamp.Wherein, the color temperature value of this high color temperature photoflash lamp is more than or equal to high color temperature threshold value, suppose that high color temperature threshold value is A, the color temperature value of high color temperature photoflash lamp is B, so correspondingly, just has relational expression B>A, wherein, A, B are the positive integer being greater than 0, and under normal circumstances, A can be 5000K.
It should be noted that, the photoflash lamp provided in the embodiment of the present invention can contain three kinds of colour temperatures (high color temperature, middle colour temperature and low colour temperature), therefore corresponding photoflash lamp just has high color temperature photoflash lamp, middle colour temperature photoflash lamp and low colour temperature photoflash lamp, terminal can select the photoflash lamp of corresponding colour temperature according to the change of the colour temperature of ambient light conditions, to ensure the effect that photoflash lamp is taken pictures.
S203, terminal, according to the corresponding relation of the colour temperature obtained in advance and white balance, determine the white balance value that the color temperature value of the photoflash lamp after regulating is corresponding.
S204, terminal, according to white balance value, carry out white balance adjusting to preview image.
It should be noted that, the step S201 in the embodiment of the present invention, S203 and S204 can respectively with reference to the descriptions of the step S101 in embodiment one, S103 and S104, and at this, it is no longer repeated.
In the method flow described by Fig. 2, terminal is under exposal model, when photoflash lamp is in opening, obtain the color temperature value of the current luminous environment of preview image, when the color temperature value got is more than or equal to high color temperature threshold value, regulate photoflash lamp to be high color temperature photoflash lamp, wherein, the color temperature value of this high color temperature photoflash lamp is more than or equal to this high color temperature threshold value.By the embodiment of the present invention, when the colour temperature of the current luminous environment of preview image is high color temperature, terminal can regulate photoflash lamp to be high color temperature photoflash lamp, to make the colour temperature of the colour temperature of photoflash lamp and current luminous environment be consistent, thus can improve effect of taking pictures.
Refer to Fig. 3, Fig. 3 is the schematic flow sheet of another kind of photoflash lamp color temperature adjusting method disclosed in the embodiment of the present invention.As shown in Figure 3, the method can comprise the following steps:
S301, terminal, under exposal model, when photoflash lamp is in opening, obtain the color temperature value of the current luminous environment of preview image.
If the color temperature value that S302 gets is less than or equal to low colour temperature threshold value, terminal regulates photoflash lamp to be low colour temperature photoflash lamp.
In the embodiment of the present invention, because colour temperature is divided into high color temperature, middle colour temperature and low colour temperature three kinds, the colour temperature of luminous environment that therefore terminal gets also has three kinds.When the color temperature value got is less than or equal to low colour temperature threshold value, the colour temperature of the light source provided to make photoflash lamp and the colour temperature of luminous environment are consistent, and terminal needs to regulate photoflash lamp to be low colour temperature photoflash lamp.Wherein, the color temperature value of this low colour temperature photoflash lamp is less than or equal to low colour temperature threshold value, suppose that low colour temperature threshold value is A, the color temperature value of low colour temperature photoflash lamp is B, so correspondingly, just has relational expression B<A, wherein, A, B are the positive integer being greater than 0, and under normal circumstances, B can be 3100K.
It should be noted that, the photoflash lamp provided in the embodiment of the present invention can contain three kinds of colour temperatures (high color temperature, middle colour temperature and low colour temperature), therefore corresponding photoflash lamp just has high color temperature photoflash lamp, middle colour temperature photoflash lamp and low colour temperature photoflash lamp, terminal can select the photoflash lamp of corresponding colour temperature according to the change of the colour temperature of ambient light conditions, to ensure the effect that photoflash lamp is taken pictures.
S303, terminal, according to the corresponding relation of the colour temperature obtained in advance and white balance, determine the white balance value that the color temperature value of the photoflash lamp after regulating is corresponding.
S304, terminal, according to white balance value, carry out white balance adjusting to preview image.
It should be noted that, the step S301 in the embodiment of the present invention, S303 and S304 can respectively with reference to the descriptions of the step S101 in embodiment one, S103 and S104, and at this, it is no longer repeated.
In the method flow described by Fig. 3, terminal is under exposal model, when photoflash lamp is in opening, obtain the color temperature value of the current luminous environment of preview image, when the color temperature value got is less than or equal to low colour temperature threshold value, regulate photoflash lamp to be low colour temperature photoflash lamp, wherein, the color temperature value of this low colour temperature photoflash lamp is less than or equal to this low colour temperature threshold value.By the embodiment of the present invention, when the colour temperature of the current luminous environment of preview image is low colour temperature, terminal can regulate photoflash lamp to be low colour temperature photoflash lamp, to make the colour temperature of the colour temperature of photoflash lamp and current luminous environment be consistent, thus can improve effect of taking pictures.
Be apparatus of the present invention embodiment below, the method that apparatus of the present invention embodiment realizes for performing the inventive method embodiment one to three, for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention, concrete ins and outs do not disclose, and please refer to the embodiment of the present invention one, embodiment two and embodiment three.
Refer to Fig. 4, Fig. 4 is the structural representation of a kind of terminal disclosed in the embodiment of the present invention, and as shown in Figure 4, this terminal 400 can comprise: acquiring unit 401 and regulon 402, wherein:
Acquiring unit 401, under exposal model, when photoflash lamp is in opening, obtains the color temperature value of the current luminous environment of preview image.
In the embodiment of the present invention, colour temperature is the color that light sends, i.e. the color of light source light spectrum composition.The unit of colour temperature represents with (K), when the color of light is partially blue or green, blue or bluish violet time, usual title it be high color temperature, when the color of light is partially red, orange, yellow, usual title it be low colour temperature, when the color of light is white, usually claim it be normal color temperature (i.e. middle colour temperature), wherein, any one color only just can obtain the normal color of self under the light of white irradiates.
Usually, the color temperature value of high color temperature is generally not less than 5000K, and the color temperature value of low colour temperature is generally not more than 3100K, and the color temperature value of middle colour temperature is between 3100K and 5000K.
Regulon 402, for when the color temperature value that acquiring unit 401 gets is between high color temperature threshold value and low colour temperature threshold value, photoflash lamp is regulated to be middle colour temperature photoflash lamp, wherein, this high color temperature threshold value is greater than this low colour temperature threshold value, and in this color temperature value of colour temperature photoflash lamp between this high color temperature threshold value and this low colour temperature threshold value.
In the embodiment of the present invention, because colour temperature is divided into high color temperature, middle colour temperature and low colour temperature three kinds, the colour temperature of luminous environment that therefore acquiring unit 401 gets also has three kinds.When the color temperature value that acquiring unit 401 gets is between high color temperature threshold value and low colour temperature threshold value, the colour temperature of the light source provided to make photoflash lamp and the colour temperature of luminous environment are consistent, and regulon 402 needs to regulate photoflash lamp to be middle colour temperature photoflash lamp.Wherein, above-mentioned high color temperature threshold value is greater than above-mentioned low colour temperature threshold value, as: high color temperature threshold value is 5000K, and low colour temperature threshold value is 3100K, and color temperature value of colour temperature photoflash lamp is between this high color temperature threshold value and this low colour temperature threshold value in this, suppose that high color temperature threshold value is A, low colour temperature threshold value is B, and the color temperature value of middle colour temperature photoflash lamp is C, so correspondingly, just have relational expression A>C>B, wherein, A, B, C are the positive integer being greater than 0.
It should be noted that, the photoflash lamp provided in the embodiment of the present invention can contain three kinds of colour temperatures (high color temperature, middle colour temperature and low colour temperature), therefore corresponding photoflash lamp just has high color temperature photoflash lamp, middle colour temperature photoflash lamp and low colour temperature photoflash lamp, terminal can select the photoflash lamp of corresponding colour temperature according to the change of the colour temperature of ambient light conditions, to ensure the effect that photoflash lamp is taken pictures.
As the optional execution mode of one, above-mentioned regulon 402, also for when the color temperature value that acquiring unit 401 gets is more than or equal to high color temperature threshold value, regulates photoflash lamp to be high color temperature photoflash lamp, wherein, the color temperature value of this high color temperature photoflash lamp is more than or equal to high color temperature threshold value.
In this embodiment, when the color temperature value that acquiring unit 401 gets is more than or equal to high color temperature threshold value, the colour temperature of the light source provided to make photoflash lamp and the colour temperature of luminous environment are consistent, and regulon 402 needs photoflash lamp to be adjusted to high color temperature photoflash lamp.Wherein, the color temperature value of this high color temperature photoflash lamp is more than or equal to high color temperature threshold value, suppose that high color temperature threshold value is A, the color temperature value of high color temperature photoflash lamp is B, so correspondingly, just has relational expression B>A, wherein, A, B are the positive integer being greater than 0, and under normal circumstances, A can be 5000K.
As the optional execution mode of another kind, above-mentioned regulon 402, also for when the color temperature value that acquiring unit 401 gets is less than or equal to low colour temperature threshold value, regulates photoflash lamp to be low colour temperature photoflash lamp, wherein, the color temperature value of low colour temperature photoflash lamp is less than or equal to low colour temperature threshold value.
In this embodiment, the color temperature value got when acquiring unit 401 is less than or equal to low colour temperature threshold value, and the colour temperature of the light source provided to make photoflash lamp and the colour temperature of luminous environment are consistent, and regulon 402 needs photoflash lamp to be adjusted to low colour temperature photoflash lamp.Wherein, the color temperature value of this low colour temperature photoflash lamp is less than or equal to low colour temperature threshold value, suppose that low colour temperature threshold value is A, the color temperature value of low colour temperature photoflash lamp is B, so correspondingly, just has relational expression B<A, wherein, A, B are the positive integer being greater than 0, and under normal circumstances, B can be 3100K.
Refer to Fig. 5, Fig. 5 is the structural representation of another kind of terminal disclosed in the embodiment of the present invention, wherein, terminal shown in Fig. 5 is that the enterprising one-step optimization in basis of terminal shown in Fig. 4 obtains, compared with the terminal shown in Fig. 4, terminal shown in Fig. 5 is except all unit comprising terminal shown in Fig. 4, and the acquiring unit 401 shown in Fig. 5 can comprise:
Obtain subelement 4011, for obtaining the rgb value of the current luminous environment of preview image;
Determine subelement 4012, for determining the color temperature value that the rgb value of the current luminous environment of preview image is corresponding.
In this embodiment, obtain subelement 4011 and can pass through RGB (red, green, blue) value that special algorithm (as white balance algorithm) calculates the current luminous environment of preview image, and further by determining that subelement 4012 is by this rgb value, determine the color temperature value that the rgb value of the current luminous environment of preview image is corresponding.Wherein, this RGB (red, green, blue) value respectively has 256 grades of brightness, with numeral be from 0,1,2......255, the color of any light source can be mixed according to different ratios by these three kinds of coloured light.
Alternatively, determine that subelement 4012 determines that the specific implementation of the color temperature value that the rgb value of the current luminous environment of preview image is corresponding can be:
According to the mapping relations of the RGB obtained in advance and colour temperature, from mapping relations, select the color temperature value that the rgb value of the current luminous environment of preview image is corresponding.
In this embodiment, above-mentioned mapping relations can be calculated in advance by experiment, and the operational order that also can be inputted by user is generated, and the embodiment of the present invention is not construed as limiting.
Alternatively, determine that subelement 4012 determines that the specific implementation of the color temperature value that the rgb value of the current luminous environment of preview image is corresponding can be:
By white balance algorithm, calculate the color temperature value that the rgb value of the current luminous environment of preview image is corresponding.
In this embodiment, white balance describes the index that the mixing of red, green, blue three primary colors generates rear white accuracy, and white balance algorithm can with the series of problems solving color rendition and tone process.The algorithm that white balance is commonly used can include but not limited to grey world, perfect inverse method and the algorithm etc. based on automatic threshold process white balance.
Refer to Fig. 6, Fig. 6 is the structural representation of another kind of terminal disclosed in the embodiment of the present invention, wherein, terminal shown in Fig. 6 is that the enterprising one-step optimization in basis of terminal shown in Fig. 4 obtains, compared with the terminal shown in Fig. 4, terminal shown in Fig. 6 is except all unit comprising terminal shown in Fig. 4, and the terminal 400 shown in Fig. 6 can also comprise:
Determining unit 403, for the corresponding relation according to the colour temperature obtained in advance and white balance, determines the white balance value that the color temperature value of the photoflash lamp after regulating is corresponding.
In the embodiment of the present invention, under various different light status, object color can change because throw light color produces, and the photo shot under the occasion of different light rays has different colour temperatures.In this respect, white object changes the most obvious: under indoor tungsten light, and white object seems can with crocus tone, and the scenery taking out under such illumination condition will be partially yellow; But if under azure sky, then can with blue color, the scenery taking out under such illumination condition can be partially blue.In order to reduce the impact that external light causes color of object as far as possible, can restore the original color of target subject under different colour temperature conditions, just needing to carry out colour correction, to reach correct color balance, this is just called white balance adjusting.
Visible; white balance adjusting is related to the normal reduction of color and the utilization of tone, can think that white balance is exactly the manager of colour temperature, therefore; determining unit 403 needs the corresponding relation according to the colour temperature obtained in advance and white balance, determines the white balance value that the color temperature value of the photoflash lamp after regulating is corresponding.
In the embodiment of the present invention, this corresponding relation can calculate in advance by experiment, or generated by the operational order that user inputs, the embodiment of the present invention is not construed as limiting.
Above-mentioned regulon 402, also for according to white balance value, carries out white balance adjusting to preview image.
In the embodiment of the present invention, white balance generally has various modes, is used for adapting to different scene capture, as Automatic white balance, tungsten light white balance, fluorescence white balance, indoor white balance, manual adjustments etc.Regardless of the white balance of which kind of pattern, it has a corresponding white balance value.White balance value corresponding to white balance mode that regulon 402 can be selected according to user, carries out white balance adjusting to preview image, to make the color of preview image obtain normal reduction, improves the effect of taking pictures, meets the esthetic requirement of user.
As the optional execution mode of one, the terminal 400 shown in Fig. 6 can also comprise:
Receiving element 404, at acquiring unit 401 under exposal model, when photoflash lamp is in opening, before obtaining the color temperature value of preview image current luminous environment, receive exposal model open command.
Opening unit 405, for responding exposal model open command, opening exposal model.
In this embodiment, this exposal model open command can be the exposal model open command receiving user's input, such as: the exposal model that user clicks terminal is released the button, or, above-mentioned exposal model open command can be the exposal model open command that terminal generates automatically, such as: the exposal model open command automatically entering exposal model at special time.
As the optional execution mode of another kind, the terminal 400 shown in Fig. 6 can also comprise:
Output unit 406, after receiving exposal model open command at receiving element 404, exports information, and this information is for pointing out input information to be verified;
Above-mentioned receiving element 404, also for receiving the information to be verified of this information of response input;
Authentication unit 407, for verifying that whether this information to be verified is consistent with the default authorization information pre-set;
Above-mentioned unlatching unit 405, during specifically for verifying that this information to be verified is consistent with default authorization information when authentication unit 407, responds this exposal model open command, opens exposal model.
In this embodiment, after receiving element 404 receives exposal model open command, output is used for pointing out the information inputting information to be verified by output unit 406; And output unit 406 can export the information input port to be verified for inputting information to be verified.
In this embodiment, this information to be verified can include but not limited to any one or a few the combination in password to be verified, finger print information to be verified, shape of face information to be verified, iris information to be verified, retinal information to be verified and voiceprint to be verified.
In this embodiment, this default authorization information pre-set can include but not limited to default authentication password, presets checking finger print information, preset checking shape of face information, presets checking iris information, presets checking retinal information and preset any one or a few the combination in checking voiceprint.
Optionally, in this embodiment, above-mentioned default authorization information can comprise fingerprint string information and input time corresponding to each fingerprint; So correspondingly, authentication unit 407 is verified that whether information to be verified is consistent with default authorization information and can be comprised the following steps:
Whether checking fingerprint string is identical with the fingerprint string that default authorization information comprises, and whether the difference of the input time of identical fingerprints is all less than preset value, if checking fingerprint string is identical with the fingerprint string that default authorization information comprises, and the difference of the input time of identical fingerprints is all less than preset value, so can verify that information to be verified is consistent with default authorization information; Otherwise, verify information to be verified and default authorization information inconsistent.Wherein, by implementing this execution mode, can prevent disabled user from terminal, opening exposal model, thus can effectively prevent terminal from wantonly being operated by disabled user.
Optionally, in this embodiment, above-mentioned default authorization information can comprise encrypted message and biological information (combination of any one or several in finger print information, shape of face information, iris information, retinal information and voiceprint), so correspondingly, authentication unit 407 is verified that whether information to be verified is consistent with default authorization information and can be comprised the following steps:
Whether the encrypted message of checking input is identical with the encrypted message preset, when verifying that the encrypted message of input is identical with the encrypted message preset, whether the biological information of checking input is identical with the biological information preset, if the biological information of checking input is identical with the biological information preset, so can verify that information to be verified is consistent with default authorization information; Otherwise, verify information to be verified and default authorization information inconsistent.Wherein, by implementing this execution mode, can prevent invalid user stealing encrypted message from opening exposal model, thus can effectively prevent terminal from wantonly being operated by disabled user.
In the terminal shown in Fig. 4, Fig. 5 and Fig. 6, acquiring unit 401 is under exposal model, when photoflash lamp is in opening, obtain the color temperature value of the current luminous environment of preview image, when the color temperature value that acquiring unit 401 gets is between high color temperature threshold value and low colour temperature threshold value, regulon 402 regulates photoflash lamp to be middle colour temperature photoflash lamp, wherein, this high color temperature threshold value is greater than this low colour temperature threshold value, and the color temperature value of middle colour temperature photoflash lamp is between this high color temperature threshold value and this low colour temperature threshold value.By the embodiment of the present invention, when the colour temperature of the current luminous environment of preview image is normal color temperature, terminal can regulate photoflash lamp to be middle colour temperature photoflash lamp, to make the colour temperature of the colour temperature of photoflash lamp and current luminous environment be consistent, thus can improve effect of taking pictures.
It should be noted that, for each embodiment of the method aforesaid, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the application is not by the restriction of described sequence of movement, because according to the application, certain some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and involved action and unit might not be that the application is necessary.
In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above disclosedly be only present pre-ferred embodiments, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (14)
1. a photoflash lamp color temperature adjusting method, is characterized in that, comprising:
Under exposal model, when photoflash lamp is in opening, obtain the color temperature value of the current luminous environment of preview image;
If the described color temperature value got is between high color temperature threshold value and low colour temperature threshold value, photoflash lamp is regulated to be middle colour temperature photoflash lamp, wherein, described high color temperature threshold value is greater than described low colour temperature threshold value, and the color temperature value of described middle colour temperature photoflash lamp is between described high color temperature threshold value and described low colour temperature threshold value.
2. method according to claim 1, is characterized in that, described method also comprises:
If the described color temperature value got is more than or equal to described high color temperature threshold value, regulate photoflash lamp to be high color temperature photoflash lamp, wherein, the color temperature value of described high color temperature photoflash lamp is more than or equal to described high color temperature threshold value.
3. method according to claim 1, is characterized in that, described method also comprises:
If the described color temperature value got is less than or equal to described low colour temperature threshold value, regulate photoflash lamp to be low colour temperature photoflash lamp, wherein, the color temperature value of described low colour temperature photoflash lamp is less than or equal to described low colour temperature threshold value.
4. method according to claim 1, is characterized in that, the color temperature value of the current luminous environment of described acquisition preview image, comprising:
Obtain the rgb value of the current luminous environment of preview image;
Determine the color temperature value that the rgb value of the current luminous environment of described preview image is corresponding.
5. method according to claim 4, is characterized in that, describedly determines the color temperature value that the rgb value of the current luminous environment of described preview image is corresponding, comprising:
According to the mapping relations of the RGB obtained in advance and colour temperature, from described mapping relations, select the color temperature value that the rgb value of the current luminous environment of described preview image is corresponding.
6. method according to claim 4, is characterized in that, describedly determines the color temperature value that the rgb value of the current luminous environment of described preview image is corresponding, comprising:
By white balance algorithm, calculate the color temperature value that the rgb value of the current luminous environment of described preview image is corresponding.
7. the method according to any one of claim 1 ~ 6, is characterized in that, described method also comprises:
According to the corresponding relation of the colour temperature obtained in advance and white balance, determine the white balance value that the color temperature value of the photoflash lamp after regulating is corresponding;
According to described white balance value, white balance adjusting is carried out to described preview image.
8. a terminal, is characterized in that, comprising:
Acquiring unit, under exposal model, when photoflash lamp is in opening, obtains the color temperature value of the current luminous environment of preview image;
Regulon, for when the described color temperature value that gets when described acquiring unit is between high color temperature threshold value and low colour temperature threshold value, photoflash lamp is regulated to be middle colour temperature photoflash lamp, wherein, described high color temperature threshold value is greater than described low colour temperature threshold value, and the color temperature value of described middle colour temperature photoflash lamp is between described high color temperature threshold value and described low colour temperature threshold value.
9. terminal according to claim 8, it is characterized in that, when the described color temperature value of described regulon also for getting when described acquiring unit is more than or equal to described high color temperature threshold value, photoflash lamp is regulated to be high color temperature photoflash lamp, wherein, the color temperature value of described high color temperature photoflash lamp is more than or equal to described high color temperature threshold value.
10. terminal according to claim 8, it is characterized in that, when the described color temperature value of described regulon also for getting when described acquiring unit is less than or equal to described low colour temperature threshold value, photoflash lamp is regulated to be low colour temperature photoflash lamp, wherein, the color temperature value of described low colour temperature photoflash lamp is less than or equal to described low colour temperature threshold value.
11. terminals according to claim 8, is characterized in that, described acquiring unit comprises:
Obtain subelement, for obtaining the rgb value of the current luminous environment of preview image;
Determine subelement, for determining the color temperature value that the rgb value of the current luminous environment of described preview image is corresponding.
12. terminals according to claim 11, is characterized in that, describedly determine that subelement is specifically for the mapping relations according to the RGB that obtains in advance and colour temperature, selects the color temperature value that the rgb value of the current luminous environment of described preview image is corresponding from described mapping relations.
13. terminals according to claim 11, is characterized in that, describedly determine that subelement is specifically for by white balance algorithm, calculates the color temperature value that the rgb value of the current luminous environment of described preview image is corresponding.
Terminal described in 14. according to Claim 8 ~ 13 any one, is characterized in that, described terminal also comprises:
Determining unit, for the corresponding relation according to the colour temperature obtained in advance and white balance, determines the white balance value that the color temperature value of the photoflash lamp after regulating is corresponding;
Described regulon, also for according to described white balance value, carries out white balance adjusting to described preview image.
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