CN109788206B - Photometry method, photometry device, photographing apparatus, and storage medium - Google Patents
Photometry method, photometry device, photographing apparatus, and storage medium Download PDFInfo
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Abstract
The embodiment of the invention discloses a photometry method, a photometry device, shooting equipment and a storage medium. The method comprises the following steps: acquiring a photometric brightness matrix corresponding to a to-be-measured light picture; determining the area proportion of an extreme brightness area with a brightness value in an extreme brightness interval in the light picture to be detected according to the photometric brightness matrix and the extreme brightness threshold, wherein the extreme brightness interval is generated by the extreme brightness threshold and the brightness value maximum corresponding to the extreme brightness threshold; if the area occupation ratio is smaller than a preset occupation ratio threshold value, adjusting each extreme brightness value in the photometric brightness matrix to a normal brightness interval to obtain an adjusted brightness matrix; and photometry is carried out on the picture to be measured according to the adjusted brightness matrix and the photometry weight table corresponding to the target photometry mode. Through the technical scheme, the accuracy of photometry is improved, so that the photometry brightness meeting the actual imaging requirement is obtained, subsequent reasonable exposure is realized, and the shooting effect is ensured.
Description
Technical Field
Embodiments of the present invention relate to optical measurement technologies, and in particular, to a light metering method and apparatus, a shooting device, and a storage medium.
Background
A photometric system of a photographing apparatus such as a digital camera or a mobile phone generally measures the light intensity reflected by a subject. The measured light brightness is transmitted to a processor of the shooting equipment, an exposure combination, namely a combination of a shooting aperture and a shooting shutter speed, is determined after the calculation process of automatic exposure, and then shooting is carried out according to the aperture and the shutter value given by the shooting equipment, so that a picture with accurate exposure can be shot.
The metering modes commonly used by the current photographing equipment include evaluation metering, spot metering, central portion metering, central average metering and the like, and each metering mode corresponds to a preset metering weight table so as to perform weighting operation on the brightness value of each statistical area in a metering picture initially obtained by a metering system and obtain the metering brightness obtained in the corresponding metering mode.
However, since the metering weight table is a fixed parameter corresponding to the metering mode, when there is an abnormal area with local extreme brightness or local extreme darkness in the metering screen, the brightness value of the abnormal area will have a non-negligible effect on the brightness of the light obtained in the metering mode, for example, the brightness is too high or too low, and the deviation between the exposure combination value calculated in the automatic exposure process and the actually required value is large, thereby affecting the shooting effect.
Disclosure of Invention
Embodiments of the present invention provide a photometry method, a photometry device, a photographing apparatus, and a storage medium, so as to improve accuracy of photometry, obtain photometry brightness more suitable for actual imaging requirements, implement subsequent reasonable exposure, and ensure a photographing effect.
In a first aspect, an embodiment of the present invention provides a light metering method, including:
acquiring a photometric brightness matrix corresponding to a to-be-measured light picture;
determining the area proportion of an extreme brightness area of which the brightness value is located in an extreme brightness interval in the light picture to be tested according to the photometric brightness matrix and the extreme brightness threshold, wherein the extreme brightness interval is generated by the extreme brightness threshold and the brightness value maximum corresponding to the extreme brightness threshold;
if the area occupation ratio is smaller than a preset occupation ratio threshold value, adjusting each extreme brightness value in the photometric brightness matrix to a normal brightness interval to obtain an adjusted brightness matrix, wherein the normal brightness interval is generated by the extreme brightness threshold value or the extreme brightness threshold value and the brightness value maximum value;
and photometry is carried out on the picture to be measured according to the adjustment brightness matrix and a photometry weight table corresponding to the target photometry mode.
In a second aspect, an embodiment of the present invention further provides a light measuring apparatus, where the apparatus includes:
the photometric brightness matrix acquisition module is used for acquiring a photometric brightness matrix corresponding to the light picture to be detected;
the area occupation ratio determining module is used for determining the area occupation ratio of an extreme brightness area of which the brightness value is located in an extreme brightness interval in the light picture to be detected according to the photometric brightness matrix and the extreme brightness threshold, wherein the extreme brightness interval is generated by the extreme brightness threshold and a brightness value maximum corresponding to the extreme brightness threshold;
an adjustment brightness matrix determining module, configured to adjust each extreme brightness value in the photometric brightness matrix to a normal brightness interval to obtain an adjustment brightness matrix if the area occupancy is smaller than a preset occupancy threshold, where the normal brightness interval is generated by the extreme brightness threshold or the extreme brightness threshold and the brightness value maximum;
and the light metering module is used for metering the light of the light picture to be measured according to the light metering weight table corresponding to the adjustment brightness matrix and the target light metering mode.
In a third aspect, an embodiment of the present invention further provides a shooting device, where the shooting device includes:
one or more processors;
storage means for storing one or more programs;
the camera is used for collecting a light picture to be measured;
when the one or more programs are executed by the one or more processors, the one or more processors implement the photometry method provided by any embodiment of the present invention.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the light metering method provided in any embodiment of the present invention.
The embodiment of the invention determines the area occupation ratio of the extreme brightness area in the picture to be measured through the luminance matrix to be measured corresponding to the picture to be measured and the extreme brightness threshold, and adjusts the extreme brightness value in the luminance matrix to be measured to the normal brightness interval when the area occupation ratio is smaller than the preset occupation ratio threshold, so as to obtain the adjusted luminance matrix, and then measures the light on the picture to be measured according to the adjusted luminance matrix and the light measurement weight table corresponding to the target light measurement mode. The abnormal influence of the extreme brightness value in the photometric brightness matrix on the photometric result is shielded under the scene with a small occupation ratio of the extreme brightness area, and the invariability of the photometric brightness matrix under the scene with a large occupation ratio of the extreme brightness area is ensured, so that the photometric accuracy is improved, the photometric brightness more suitable for the actual development requirement is obtained, the subsequent reasonable exposure is realized, and the shooting effect is ensured.
Drawings
Fig. 1 is a flowchart of a light measuring method according to a first embodiment of the present invention;
FIG. 2 is a flowchart of a light measuring method according to a second embodiment of the present invention;
FIG. 3 is a diagram illustrating distribution of photometric brightness intervals according to an embodiment of the present invention;
fig. 4 is a flowchart of a light measuring method according to a third embodiment of the present invention;
FIG. 5 is a schematic diagram of a luminance matrix for photometry according to a third embodiment of the present invention;
fig. 6 is a schematic structural diagram of a light measuring device in a fourth embodiment of the present invention;
fig. 7 is a schematic structural diagram of an apparatus in the fifth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
The photometry method provided by the embodiment can be applied to photometry of the photographing apparatus in the case where the extreme luminance area occupies a small area in the entire photometry screen. The method may be performed by a light measuring apparatus, which may be implemented in software and/or hardware, which may be integrated in a photographing device using a CMOS/CCD sensor, such as a mobile phone, a tablet computer, an in-vehicle camera, a point-and-shoot camera, or a single lens reflex camera. Referring to fig. 1, the method of the present embodiment specifically includes the following steps:
and S110, acquiring a photometric brightness matrix corresponding to the light picture to be measured.
The light picture to be measured refers to a picture collected by a camera when the shooting equipment measures light. The photometric brightness matrix is a brightness matrix for photometric calculation, and each matrix element value is a statistical brightness value of a statistical area corresponding to the matrix element.
Specifically, a picture to be measured is captured by a camera of a shooting device, a CMOS/CCD sensor of the shooting device obtains the brightness (luminance value) of reflected light in the picture to be measured, and an initial luminance matrix with the number of matrix elements consistent with the number of sensors is generated. Then, the initial luminance matrix is divided into a plurality of statistical regions. For each statistical region, all the luminance values in the statistical region are (weighted) averaged to obtain a statistical luminance value of the statistical region, and thus a photometric luminance matrix is obtained.
And S120, determining the area proportion of an extreme brightness area with the brightness value positioned in the extreme brightness interval in the light frame to be detected according to the photometric brightness matrix and the extreme brightness threshold.
The extreme brightness threshold is a preset brightness value used for distinguishing whether a brightness value is too large (too bright), normal or too small (too dark). The extreme brightness threshold value can be a fixed value set by equipment from a factory; or the numerical value input by the user or a debugging engineer through an input interface provided by the shooting equipment so as to meet different application requirements. The extreme brightness threshold may be, for example, an extremely dark brightness threshold characterizing an excessively small brightness value or an extremely bright brightness threshold characterizing an excessively large brightness value; the extreme brightness threshold may also be two, i.e. the extreme brightness threshold comprises an extremely dark brightness threshold and an extremely bright brightness threshold.
The extreme brightness interval is an extreme brightness value range, which is generated by an extreme brightness threshold and a brightness value maximum corresponding to the extreme brightness threshold. For example, if the extreme luminance threshold is an extremely dark luminance threshold, the extreme luminance interval is generated by the extremely dark luminance threshold and the minimum value of the luminance values. The brightness maximum value is a boundary value of a value range of brightness values in the brightness matrix, and may include a brightness minimum value and a brightness maximum value. The maximum value of the luminance value is determined by an Image Signal Processor (ISP) in the imaging device, and may be, for example, 0 and 255.
Specifically, each luminance value in the luminance matrix of the photometry is compared with an extreme luminance threshold value, and a matrix element distribution range of the luminance value in the extreme luminance matrix within the extreme luminance interval is determined, from which an extreme luminance region in the picture to be measured can be determined. And then calculating the proportion of the extreme brightness area in the whole light picture to be measured, namely the area proportion. The area occupancy can be based on area calculation, such as calculating the ratio of the area of the extreme brightness area to the area of the light picture to be measured; or may be calculated based on the number of elements. The specific calculation method can be determined according to the image processing function of the shooting device.
Exemplarily, S120 includes: determining the number of elements of the luminance value in the photometric luminance matrix, which is positioned in the extreme luminance interval, according to the extreme luminance threshold; and determining the area proportion of an extreme brightness area with the brightness value positioned in the extreme brightness interval in the light frame to be detected according to the element number and the total element number of the photometric brightness matrix.
Specifically, the number of elements of matrix elements whose luminance values fall within the extreme luminance interval is directly counted according to the extreme luminance threshold and each luminance value of the photometric luminance matrix. Then, the ratio of the counted number of elements to the number of all elements (total number of elements) included in the photometric brightness matrix is calculated as the area proportion of the extreme brightness area in which the brightness value is located in the extreme brightness interval in the to-be-measured light picture. The advantage of this arrangement is to further increase the photometric speed.
And S130, if the area occupation ratio is smaller than the preset occupation ratio threshold, adjusting each extreme brightness value in the photometric brightness matrix to a normal brightness interval to obtain an adjusted brightness matrix.
The preset ratio threshold is a preset maximum ratio of the extreme brightness area in the whole light picture to be measured, and may be a fixed value configured by the shooting device in the factory or a value dynamically adjusted by a user/debugging engineer according to actual needs, and the setting interface is provided by the shooting device. The preset proportion threshold is set for not adjusting the brightness of the photometric brightness matrix of the to-be-measured light picture in a shooting scene with large-scale extreme brightness, such as a large-area snow or a pure dark environment, so that the accuracy of the photometric result obtained in the shooting scene is ensured, and the accuracy of image/video shooting in the shooting scene is further ensured.
The normal brightness interval is set corresponding to the extreme brightness interval and is generated by the extreme brightness threshold or the extreme brightness threshold and the brightness value. For example, if the extreme luminance threshold is only an extremely dark luminance threshold, the normal luminance interval is generated by the extremely dark luminance threshold and the maximum luminance value. For another example, the extreme luminance threshold includes an extremely dark luminance threshold and an extremely bright luminance threshold, and the normal luminance interval is generated by the extremely dark luminance threshold and the extremely bright luminance threshold.
Specifically, the area occupancy obtained in S120 is compared with a preset occupancy threshold. When the area occupancy is greater than or equal to the preset occupancy threshold, it is determined that the shooting scene corresponding to the light-to-be-measured picture is a shooting scene with a large proportion of extreme brightness, and the extreme brightness value in the light-to-be-measured brightness matrix is a normal brightness value required for light measurement, so that brightness value adjustment is not required, and light measurement can be performed on the light-to-be-measured picture by using a light-measurement weight table corresponding to a light-to-be-measured mode (target light-to-be-measured mode) set for the light-to-be-measured picture directly based on.
When the area ratio is smaller than the preset ratio threshold, it is indicated that the extreme luminance value in the photometric luminance matrix is a noise luminance value having an abnormal influence on subsequent photometry, and luminance adjustment needs to be performed on the extreme luminance value. In specific implementation, each luminance value (extreme luminance value) of the luminance values in the photometric luminance matrix belonging to the extreme luminance interval is adjusted to the normal luminance interval according to the preset luminance value adjustment rule, so that an adjusted luminance matrix in which the luminance values of each matrix element are all located in the normal luminance interval can be obtained. The preset brightness value adjustment rule may be a direct brightness value setting, or a proportional adjustment.
And S140, photometry is performed on the picture to be measured according to the adjusted brightness matrix and the photometry weight table corresponding to the target photometry mode.
The photometric weight table is data composed of weight values used for photometric brightness calculation, and may be in a matrix form or a list form, as long as a weight value distribution condition corresponding to a target photometric mode can be represented. For example, in the metering weight table, a weight value applied to the central area of the metering luminance matrix is required to be greater than a weight value applied to the peripheral area of the metering luminance matrix in response to the center-averaging metering mode.
Specifically, the adjustment luminance matrix is subjected to element-by-element weighting calculation by using a metering weight table corresponding to the target metering mode, and the weighted result average value is calculated, so that the metering luminance corresponding to the to-be-measured picture can be obtained, and metering of the to-be-measured picture is completed. Here, the target metering mode may be a metering mode designated in a default configuration of the photographing apparatus when the photographing apparatus is shipped from a factory, or a metering mode selected by a user/commissioning engineer from among a plurality of metering modes provided by the photographing apparatus through an interactive interface of the photographing apparatus.
According to the technical scheme of the embodiment, the area occupation ratio of the extreme brightness area in the light picture to be measured is determined through the light measurement brightness matrix corresponding to the light picture to be measured and the extreme brightness threshold, when the area occupation ratio is smaller than the preset occupation ratio threshold, the extreme brightness value in the light measurement brightness matrix is adjusted to be in a normal brightness interval, an adjusted brightness matrix is obtained, and then light measurement is performed on the light picture to be measured according to the adjusted brightness matrix and the light measurement weight table corresponding to the target light measurement mode. The abnormal influence of the extreme brightness value in the photometric brightness matrix on the photometric result is shielded under the scene with a small occupation ratio of the extreme brightness area, and the invariability of the photometric brightness matrix under the scene with a large occupation ratio of the extreme brightness area is ensured, so that the photometric accuracy is improved, the photometric brightness more suitable for the actual development requirement is obtained, the subsequent reasonable exposure is realized, and the shooting effect is ensured.
Example two
In this embodiment, on the basis of the first embodiment, further optimization is performed on "adjusting each extreme luminance value in the photometric luminance matrix to the normal luminance interval to obtain the adjusted luminance matrix". Wherein explanations of the same or corresponding terms as those of the above embodiments are omitted. Referring to fig. 2, the light measuring method provided in the present embodiment includes:
s210, a photometric brightness matrix corresponding to the to-be-measured light picture is obtained.
S220, determining the area proportion of an extreme brightness area with the brightness value in the extreme brightness interval in the light frame to be detected according to the photometric brightness matrix and the extreme brightness threshold.
Illustratively, the extreme luminance threshold includes an extremely dark luminance threshold and an extremely bright luminance threshold, and the extreme luminance section includes an extremely dark luminance section and an extremely bright luminance section; the left boundary and the right boundary of the extremely dark brightness interval are respectively a brightness value minimum value and an extremely dark brightness threshold value, the left boundary and the right boundary of the normal brightness interval are respectively an extremely dark brightness threshold value and an extremely bright brightness threshold value, and the left boundary and the right boundary of the extremely bright brightness interval are respectively an extremely bright brightness threshold value and a brightness value maximum value.
Specifically, in order to increase the application range of the light measuring method in the embodiment of the present invention, so that the light measuring method can be applied to a shooting scene in which there is an extremely dark area and/or an extremely bright area in a light picture to be measured, the extreme brightness threshold value is set to include the extremely dark brightness threshold value and the extremely bright brightness threshold value in the embodiment. At this time, the extreme brightness interval includes an extremely dark brightness interval and an extremely bright brightness interval, and the value range of the whole photometric brightness value is divided into the extremely dark brightness interval, the normal brightness interval, and the extremely bright brightness interval.
Referring to fig. 3, in the order of the brightness values from small to large, the division boundary parameters of each brightness interval respectively correspond to a brightness value minimum 301, an extremely dark brightness threshold 302, an extremely bright brightness threshold 303, and a brightness value maximum 304. Then, the left boundary and the right boundary of the extremely dark luminance interval 310 are the minimum luminance value 301 and the threshold extremely dark luminance value 302, respectively, the left boundary and the right boundary of the normal luminance interval 320 are the threshold extremely dark luminance value 302 and the threshold extremely bright luminance value 303, respectively, and the left boundary and the right boundary of the extremely bright luminance interval 330 are the threshold extremely bright luminance value 303 and the maximum luminance value 304, respectively.
And S230, if the area ratio is smaller than the preset ratio threshold, determining an adjustment brightness value corresponding to each extreme brightness value according to the target brightness value, the extreme brightness threshold and each extreme brightness value corresponding to the photometric picture.
The target brightness value is a brightness value to which the brightness of the light frame to be measured is expected to be adjusted, and is a brightness value expected to be reached after the photometry and automatic exposure operations.
Illustratively, the target brightness value is determined by ambient light during light measurement, and the target brightness value is within a normal brightness interval. In specific implementation, a mapping relation between the ambient light and the expected light brightness value can be determined according to the value relation between the ambient light and the expected light brightness value measured in the test, and a target brightness value can be determined according to the ambient light and the mapping relation measured in the actual application; or setting a lookup table between the ambient light and the expected light brightness value, setting the corresponding expected light brightness value according to the average value of the ambient light in different shooting scenes, determining the corresponding ambient light according to the actual shooting scene, and further determining the target brightness value according to the lookup table. Referring to fig. 3, the target luminance value 305 is generally in the normal luminance interval 320.
Specifically, since the target luminance value is the final desired luminance value at the time of shooting, the adjustment target of the extreme luminance values is to make each of the extreme luminance values as close to the target luminance value as possible. Meanwhile, the boundary value of the normal brightness interval is the extreme brightness threshold, so that the extreme brightness value is adjusted to the normal brightness interval, namely the extreme brightness value is adjusted to be between the extreme brightness threshold and the target brightness value.
In summary, each extreme luminance value may be adjusted according to the target luminance value and the extreme luminance threshold value. For example, a brightness value may be determined between the extreme brightness threshold and the target brightness value according to a value distribution ratio of the extreme brightness value in a value interval (extreme brightness interval) where the extreme brightness value is located, as an adjusted brightness value after the extreme brightness value is adjusted; for another example, a numerical comparison table may be set according to the data distribution of the extreme luminance interval and the data distribution between the extreme luminance threshold and the target luminance value, and the adjustment luminance value corresponding to each extreme luminance value may be directly searched according to the numerical comparison table.
S240, replacing each extreme brightness value in the photometric brightness matrix with an adjusted brightness value corresponding to the extreme brightness to obtain an adjusted brightness matrix.
Specifically, each corresponding extreme luminance value in the photometric luminance matrix is replaced with each adjusted luminance value after the luminance adjustment, and an adjusted luminance matrix can be obtained.
And S250, metering light on the picture to be measured according to the adjustment brightness matrix and the light metering weight table corresponding to the target light metering mode.
According to the technical scheme of the embodiment, an adjustment brightness value corresponding to each extreme brightness value is determined according to a target brightness value, an extreme brightness threshold value and each extreme brightness value corresponding to a photometric picture; and replacing each extreme brightness value in the photometric brightness matrix with an adjustment brightness value corresponding to the extreme brightness to obtain an adjustment brightness matrix. The adjustment of each extreme brightness value in the photometric brightness matrix is more accurate, a fixed adjustment brightness value is not simply set, all brightness values in the photometric brightness matrix are guaranteed to participate in photometric calculation, and each extreme brightness value participates in photometric calculation with the adjustment brightness value closer to the target brightness value, so that the photometric accuracy is further improved.
EXAMPLE III
In this embodiment, based on the second embodiment, further optimization is performed on "determining an adjustment brightness value corresponding to each extreme brightness value according to a target brightness value, an extreme brightness threshold value, and each extreme brightness value corresponding to a photometric picture". Wherein explanations of the same or corresponding terms as those of the above embodiments are omitted. Referring to fig. 4, the light measuring method provided in the present embodiment includes:
s310, a photometric brightness matrix corresponding to the light picture to be measured is obtained.
S320, determining the area proportion of the extreme brightness area of which the brightness value is positioned in the extreme brightness interval in the light frame to be detected according to the photometric brightness matrix and the extreme brightness threshold.
Illustratively, when the minimum value of the brightness value is 0 and the maximum value of the brightness value is 255, the very dark brightness threshold value is 30 and the very bright brightness threshold value is 220. Thus, it is determined that the extremely dark luminance section is [0,30 ], the normal luminance section is [30,220], and the extremely bright luminance section is (220,255).
And S330, if the area occupation ratio is smaller than a preset occupation ratio threshold value, and if the extreme brightness value is in an extremely dark brightness interval, determining an adjustment brightness value corresponding to each extreme brightness value according to the target brightness value, the extremely dark brightness threshold value, the minimum brightness value and each extreme brightness value.
Specifically, referring to fig. 3, if the extreme luminance value 306 falls within the extremely dark luminance interval 310, for any one of the extreme luminance values, first, a first luminance adjustment ratio is determined according to the extreme luminance value, the minimum luminance value, and the extremely dark luminance threshold; and secondly, determining an adjustment brightness value corresponding to the extreme brightness value according to the target brightness value, the extremely dark brightness threshold value and the first brightness adjustment ratio. In specific implementation, an adjustment brightness value corresponding to an extreme brightness value of brightness to be adjusted is determined according to the following formula:
wherein, result _ lum represents the adjustment brightness value, and target _ lum represents the target brightness value; low _ thr represents an extremely dark brightness threshold, cur _ lum represents an extreme brightness value of the brightness to be adjusted, and min _ lum represents a minimum value of the brightness value. The reason why the subtracted number is not directly used as the adjusted luminance value is that the value obtained by the subtracted number may still deviate from the target luminance value greatly, so that the large deviation of the extreme luminance value in the photometric calculation cannot be weakened well, and therefore the calculation result of the target luminance value and the luminance value after the proportional adjustment is used as the adjusted luminance value in the embodiment of the present invention.
And S340, if the area occupation ratio is smaller than a preset occupation ratio threshold value, and if the extreme brightness value is located in the extremely bright brightness interval, determining an adjustment brightness value corresponding to each extreme brightness value according to the target brightness value, the extremely bright brightness threshold value, the maximum brightness value and each extreme brightness value.
Specifically, referring to fig. 3, if the extreme brightness value 306' falls within the extremely bright brightness interval 330, for any one of the extreme brightness values, a second brightness adjustment ratio is first determined according to the maximum brightness value, the extreme brightness value, and the extremely bright brightness threshold; and secondly, determining an adjustment brightness value corresponding to the extreme brightness value according to the target brightness value, the extreme brightness threshold value and the second brightness adjustment proportion. In specific implementation, an adjustment brightness value corresponding to an extreme brightness value of brightness to be adjusted is determined according to the following formula:
here, light _ thr represents an extremely bright luminance threshold, and max _ lum represents a luminance maximum value.
And S350, replacing each extreme brightness value in the photometric brightness matrix with an adjustment brightness value corresponding to the extreme brightness to obtain an adjustment brightness matrix.
And S360, photometry is performed on the picture to be measured according to the adjustment brightness matrix and the photometry weight table corresponding to the target photometry mode.
For example, it is assumed that each weight value in the metering weight table is 1, the minimum brightness value is 0, the maximum brightness value is 255, the extremely dark brightness threshold is 30, the extremely bright brightness threshold is 220, the preset duty threshold is 30%, and the target brightness value is 60.
Referring to fig. 5, there are 12 × 12 luminance values in the photometric luminance matrix, where the luminance value 255 is greater than the extreme luminance threshold 220, so there is an extreme luminance region in the photometric luminance matrix, and the area ratio of the extreme luminance value 255 in the entire photometric luminance matrix is: (12 × 3)/(12 × 12) × 100% < 25% < 30%, and all the extreme luminance values fall within the extremely bright luminance region.
Then for the initial photometric light brightness without brightness value adjustment: (255 × 12 × 3+50 × 12 × 9)/(12 × 12) ═ 101.25.
If the light measuring method provided by the embodiment of the invention is used, the extreme brightness value adjustment is required to be performed first. Then, according to the formula (2), the adjusted luminance value result _ lum after each extreme luminance value 255 is adjusted is 60+ (220-60) ((255-. Thereafter, the adjustment luminance value 60 is substituted for the extremely bright luminance value 255 in the photometric luminance matrix, obtaining an adjustment luminance matrix. Finally, calculating the target photometric brightness: (60 × 12 × 3+50 × 12 × 9)/(12 × 12) ═ 52.5.
The automatic exposure module (AE) adjusts the exposure value to make the frame brightness reach our target brightness value mainly according to the difference between the measured brightness and the target brightness value (target _ lum). Taking the above example as an example: the scene-shooting subject luminance is 50, and the edge extreme luminance value is 255. The initial luminance of the light without brightness adjustment is 101.25, so the system will decrease the brightness of the image by decreasing the exposure of the sensor, so that the final overall image brightness will decrease to 60, and thus the brightness value 50 of the main portion of the image will decrease to a lower brightness value, which is not in accordance with the expectation. The brightness of the target light is adjusted to 52.5, which is closer to the brightness of the main body, and the system increases the sensor exposure to increase the image brightness, so that the final overall image brightness is increased to 60, and the desired image can be obtained.
According to the technical scheme of the embodiment, if the extreme brightness value is in the extremely dark brightness interval, the adjustment brightness value corresponding to each extreme brightness value is determined according to the target brightness value, the extremely dark brightness threshold value, the minimum brightness value and each extreme brightness value; and if the extreme brightness value is in the extremely bright brightness interval, determining an adjustment brightness value corresponding to each extreme brightness value according to the target brightness value, the extremely bright brightness threshold value, the brightness value maximum value and each extreme brightness value. The luminance value can be adjusted more accurately, and the accuracy of photometry is further improved.
The following is an embodiment of a light measuring apparatus provided in an embodiment of the present invention, which belongs to the same inventive concept as the light measuring methods of the above embodiments, and reference may be made to the above embodiments of the light measuring apparatus for details that are not described in detail.
Example four
The present embodiment provides a light measuring device, referring to fig. 6, the device specifically includes:
a photometric brightness matrix obtaining module 610, configured to obtain a photometric brightness matrix corresponding to the to-be-measured light frame;
the area occupancy determining module 620 is configured to determine an area occupancy of an extreme brightness area in which a brightness value in the light frame to be measured is located in an extreme brightness interval according to the metering brightness matrix and the extreme brightness threshold, where the extreme brightness interval is generated by the extreme brightness threshold and a brightness value maximum corresponding to the extreme brightness threshold;
an adjusted brightness matrix determining module 630, configured to adjust each extreme brightness value in the photometric brightness matrix to a normal brightness interval if the area occupancy is smaller than the preset occupancy threshold, to obtain an adjusted brightness matrix, where the normal brightness interval is generated by the extreme brightness threshold or the extreme brightness threshold and a brightness value maximum;
the photometry module 640 is configured to perform photometry on the to-be-measured picture according to the adjusted brightness matrix and the photometry weight table corresponding to the target photometry mode.
Optionally, the area ratio determining module 620 is specifically configured to:
determining the number of elements of the luminance value in the photometric luminance matrix, which is positioned in the extreme luminance interval, according to the extreme luminance threshold;
and determining the area proportion of an extreme brightness area with the brightness value positioned in the extreme brightness interval in the light frame to be detected according to the element number and the total element number of the photometric brightness matrix.
Optionally, the adjusting brightness matrix determining module 630 includes:
and the adjustment brightness value determining submodule is used for determining an adjustment brightness value corresponding to each extreme brightness value according to the target brightness value, the extreme brightness threshold value and each extreme brightness value corresponding to the photometric picture.
And the adjustment brightness matrix determining submodule is used for replacing each extreme brightness value in the photometric brightness matrix with an adjustment brightness value corresponding to the extreme brightness to obtain an adjustment brightness matrix.
The target brightness value is determined by the ambient light during light measurement, and the target brightness value is within the normal brightness interval.
The extreme brightness threshold comprises an extremely dark brightness threshold and an extremely bright brightness threshold, and the extreme brightness interval comprises an extremely dark brightness interval and an extremely bright brightness interval;
the left boundary and the right boundary of the extremely dark brightness interval are respectively a brightness value minimum value and an extremely dark brightness threshold value, the left boundary and the right boundary of the normal brightness interval are respectively an extremely dark brightness threshold value and an extremely bright brightness threshold value, and the left boundary and the right boundary of the extremely bright brightness interval are respectively an extremely bright brightness threshold value and a brightness value maximum value.
Further, the adjustment luminance value determination submodule is specifically configured to:
if the extreme brightness value is in the extremely dark brightness interval, determining an adjustment brightness value corresponding to each extreme brightness value according to the target brightness value, the extremely dark brightness threshold value, the minimum brightness value and each extreme brightness value;
and if the extreme brightness value is in the extremely bright brightness interval, determining an adjustment brightness value corresponding to each extreme brightness value according to the target brightness value, the extremely bright brightness threshold value, the brightness value maximum value and each extreme brightness value.
Optionally, when the minimum brightness value is 0 and the maximum brightness value is 255, the very dark brightness threshold is 30 and the very bright brightness threshold is 220.
By the light measuring device provided by the fourth embodiment of the invention, the accuracy of light measurement is improved, so that the light measuring brightness more suitable for the actual development requirement is obtained, the subsequent reasonable exposure is realized, and the shooting effect is ensured.
The light measuring device provided by the embodiment of the invention can execute the light measuring method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
The photometry device provided by the embodiment of the invention can be integrated in the image signal processor ISP, and the purpose of hardware realization is achieved by changing the corresponding circuit design in the image signal processor ISP.
It should be noted that, in the embodiment of the light measuring apparatus, the included units and modules are only divided according to functional logic, but are not limited to the above division as long as the corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
EXAMPLE five
Referring to fig. 7, the present embodiment provides a photographing apparatus including: one or more processors 720; a storage 710 for storing one or more programs; a camera 760 for collecting a light image to be measured; when the one or more programs are executed by the one or more processors 720, the one or more processors 720 implement the light metering method provided by the embodiment of the present invention, including:
acquiring a photometric brightness matrix corresponding to a to-be-measured light picture;
determining the area proportion of an extreme brightness area with a brightness value in an extreme brightness interval in the light picture to be detected according to the photometric brightness matrix and the extreme brightness threshold, wherein the extreme brightness interval is generated by the extreme brightness threshold and the brightness value maximum corresponding to the extreme brightness threshold;
if the area occupation ratio is smaller than a preset occupation ratio threshold value, adjusting each extreme brightness value in the photometric brightness matrix to a normal brightness interval to obtain an adjusted brightness matrix, wherein the normal brightness interval is generated by the extreme brightness threshold value or the extreme brightness threshold value and a brightness value maximum value;
and photometry is carried out on the picture to be measured according to the adjusted brightness matrix and the photometry weight table corresponding to the target photometry mode.
Of course, those skilled in the art can understand that the processor 720 can also implement the technical solution of the light measuring method provided by any embodiment of the present invention.
The photographing apparatus shown in fig. 7 is only an example, and should not bring any limitation to the functions and the use range of the embodiment of the present invention. As shown in fig. 7, the photographing apparatus includes a processor 720, a storage device 710, a camera 760, an input device 730, and an output device 740; the number of the processors 720 in the photographing apparatus may be one or more, and one processor 720 is taken as an example in fig. 7; the processor 720, the storage device 710, the camera 760, the input device 730 and the output device 740 in the photographing apparatus may be connected by a bus or other means, and are exemplified by being connected by a bus 750 in fig. 7.
The storage device 710, which is a computer-readable storage medium, may be used to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the photometry method in the embodiment of the present invention (for example, a photometric luminance matrix acquisition module, an area ratio determination module, an adjustment luminance matrix determination module, and a photometry module in the photometry device).
The storage device 710 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the storage 710 may include high speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the storage 710 may further include memory located remotely from the processor 720, which may be connected to the capture device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 730 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the photographing apparatus. The output device 740 may include a display device such as a display screen.
EXAMPLE six
The present embodiments provide a storage medium containing computer-executable instructions that when executed by a computer processor perform a method of photometry, the method comprising:
acquiring a photometric brightness matrix corresponding to a to-be-measured light picture;
determining the area proportion of an extreme brightness area with a brightness value in an extreme brightness interval in the light picture to be detected according to the photometric brightness matrix and the extreme brightness threshold, wherein the extreme brightness interval is generated by the extreme brightness threshold and the brightness value maximum corresponding to the extreme brightness threshold;
if the area occupation ratio is smaller than a preset occupation ratio threshold value, adjusting each extreme brightness value in the photometric brightness matrix to a normal brightness interval to obtain an adjusted brightness matrix, wherein the normal brightness interval is generated by the extreme brightness threshold value or the extreme brightness threshold value and a brightness value maximum value;
and photometry is carried out on the picture to be measured according to the adjusted brightness matrix and the photometry weight table corresponding to the target photometry mode.
Of course, the storage medium provided by the embodiment of the present invention contains computer-executable instructions, and the computer-executable instructions are not limited to the above method operations, and may also perform related operations in the light metering method provided by any embodiment of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk, or an optical disk of a computer, and includes instructions for enabling a shooting device to execute the light measuring method provided in the embodiments of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (9)
1. A method of measuring light, comprising:
acquiring a photometric brightness matrix corresponding to a to-be-measured light picture;
determining the area proportion of an extreme brightness area of which the brightness value is located in an extreme brightness interval in the light picture to be tested according to the photometric brightness matrix and the extreme brightness threshold, wherein the extreme brightness interval is generated by the extreme brightness threshold and the brightness value maximum corresponding to the extreme brightness threshold, the extreme brightness threshold comprises an extremely dark brightness threshold and an extremely bright brightness threshold, the extreme brightness interval comprises an extremely dark brightness interval and an extremely bright brightness interval, the left boundary and the right boundary of the extremely dark brightness interval are respectively a brightness value minimum value and the extremely dark brightness threshold, and the left boundary and the right boundary of the extremely bright brightness interval are respectively the extremely bright brightness threshold and the brightness value maximum;
if the area occupancy is smaller than a preset occupancy threshold, adjusting each extreme brightness value in the photometric brightness matrix to a normal brightness interval to obtain an adjusted brightness matrix, wherein the normal brightness interval is generated by the extreme brightness threshold or the extreme brightness threshold and the brightness value maximum, and a left boundary and a right boundary of the normal brightness interval are respectively the extreme dark brightness threshold and the extreme bright brightness threshold;
and photometry is carried out on the picture to be measured according to the adjustment brightness matrix and a photometry weight table corresponding to the target photometry mode.
2. The method of claim 1, wherein determining the area fraction of the extreme luminance area in the frame of light to be measured whose luminance values are in the extreme luminance range of the extreme luminance range according to the photometric luminance matrix and the extreme luminance threshold comprises:
determining the number of elements of the luminance value in the photometric luminance matrix, which is positioned in the extreme luminance interval, according to the extreme luminance threshold;
and determining the area proportion of an extreme brightness area with the brightness value positioned in an extreme brightness interval in the light picture to be tested according to the element number and the total element number of the photometric brightness matrix.
3. The method of claim 1, wherein adjusting each extreme luminance value in the photometric luminance matrix to a normal luminance interval, obtaining an adjusted luminance matrix comprises:
determining an adjustment brightness value corresponding to each extreme brightness value according to a target brightness value corresponding to the photometric picture, the extreme brightness threshold and each extreme brightness value;
and replacing each extreme brightness value in the photometric brightness matrix with an adjustment brightness value corresponding to the extreme brightness to obtain an adjustment brightness matrix.
4. The method of claim 3, wherein the target brightness value is determined by ambient light during light measurement, and the target brightness value is within the normal brightness interval.
5. The method of claim 1, wherein determining an adjusted brightness value corresponding to each extreme brightness value according to the target brightness value, the extreme brightness threshold value, and each extreme brightness value corresponding to the photometric screen comprises:
if the extreme brightness value is located in the extremely dark brightness interval, determining an adjustment brightness value corresponding to each extreme brightness value according to the target brightness value, the extremely dark brightness threshold value, the brightness value minimum value and each extreme brightness value;
and if the extreme brightness value is in the extreme brightness interval, determining an adjustment brightness value corresponding to each extreme brightness value according to the target brightness value, the extreme brightness threshold value, the brightness value maximum value and each extreme brightness value.
6. The method of claim 1, wherein the very-dark luminance threshold is 30 and the very-bright luminance threshold is 220 when the minimum luminance value is 0 and the maximum luminance value is 255.
7. A light measuring device, comprising:
the photometric brightness matrix acquisition module is used for acquiring a photometric brightness matrix corresponding to the light picture to be detected;
an area occupation ratio determining module, configured to determine, according to the photometric brightness matrix and the extreme brightness threshold, an area occupation ratio of an extreme brightness area in which a brightness value in the to-be-measured light picture is located in an extreme brightness interval, where the extreme brightness interval is generated from the extreme brightness threshold and a brightness value maximum corresponding to the extreme brightness threshold, the extreme brightness threshold includes an extremely dark brightness threshold and an extremely bright brightness threshold, the extreme brightness interval includes an extremely dark brightness interval and an extremely bright brightness interval, a left boundary and a right boundary of the extremely dark brightness interval are a brightness value minimum value and the extremely dark brightness threshold, and a left boundary and a right boundary of the extremely bright brightness interval are the extremely bright brightness value threshold and the brightness maximum value, respectively;
an adjusted brightness matrix determining module, configured to adjust each extreme brightness value in the photometric brightness matrix to a normal brightness interval to obtain an adjusted brightness matrix if the area occupancy is smaller than a preset occupancy threshold, where the normal brightness interval is generated by the extreme brightness threshold or the extreme brightness threshold and the brightness maximum value, and a left boundary and a right boundary of the normal brightness interval are the ultra-dark brightness threshold and the ultra-bright brightness threshold, respectively;
and the light metering module is used for metering the light of the light picture to be measured according to the light metering weight table corresponding to the adjustment brightness matrix and the target light metering mode.
8. A photographing apparatus, characterized in that the apparatus comprises:
one or more processors;
storage means for storing one or more programs;
the camera is used for collecting a light picture to be measured;
when executed by the one or more processors, cause the one or more processors to implement a light metering method as recited in any of claims 1-6.
9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements a light metering method according to any one of claims 1 to 6.
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| CN111145138B (en) * | 2019-07-30 | 2023-06-23 | Tcl王牌电器(惠州)有限公司 | Detection method, device and equipment for LED lamp panel and storage medium |
| CN111083388B (en) * | 2019-12-26 | 2021-04-16 | 浙江大华技术股份有限公司 | Light supplement lamp control method and device, electronic equipment and storage medium |
| CN112415834B (en) * | 2020-11-06 | 2022-03-04 | 浙江大华技术股份有限公司 | Laser lamp control method and device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4693581A (en) * | 1985-09-02 | 1987-09-15 | Minolta Camera Kabushiki Kaisha | Camera with an automatic focus adjusting apparatus |
| CN101335840A (en) * | 2007-06-25 | 2008-12-31 | 三洋电机株式会社 | Camera |
| CN105323496A (en) * | 2015-02-13 | 2016-02-10 | 维沃移动通信有限公司 | Automatic exposure method, photographing device and mobile terminal |
| CN105578062A (en) * | 2014-10-14 | 2016-05-11 | 宏碁股份有限公司 | Light metering mode selection method and image acquisition device utilizing same |
| CN105827995A (en) * | 2016-03-30 | 2016-08-03 | 金三立视频科技（深圳）有限公司 | Automatic exposure method and system based on histogram |
| CN106559621A (en) * | 2015-09-24 | 2017-04-05 | 瑞昱半导体股份有限公司 | The computational methods of picture brightness |
| CN106713778A (en) * | 2016-12-28 | 2017-05-24 | 上海兴芯微电子科技有限公司 | Exposure control method and device |
| CN107241556A (en) * | 2016-03-29 | 2017-10-10 | 中兴通讯股份有限公司 | The light measuring method and device of image capture device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7176976B2 (en) * | 2001-08-30 | 2007-02-13 | Lightsurf Technologies, Inc. | Autoexposure methodology in a digital camera |
| JP5371717B2 (en) * | 2009-12-01 | 2013-12-18 | キヤノン株式会社 | Image processing apparatus and image processing method |
-
2019
- 2019-01-28 CN CN201910081391.7A patent/CN109788206B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4693581A (en) * | 1985-09-02 | 1987-09-15 | Minolta Camera Kabushiki Kaisha | Camera with an automatic focus adjusting apparatus |
| CN101335840A (en) * | 2007-06-25 | 2008-12-31 | 三洋电机株式会社 | Camera |
| CN105578062A (en) * | 2014-10-14 | 2016-05-11 | 宏碁股份有限公司 | Light metering mode selection method and image acquisition device utilizing same |
| CN105323496A (en) * | 2015-02-13 | 2016-02-10 | 维沃移动通信有限公司 | Automatic exposure method, photographing device and mobile terminal |
| CN106559621A (en) * | 2015-09-24 | 2017-04-05 | 瑞昱半导体股份有限公司 | The computational methods of picture brightness |
| CN107241556A (en) * | 2016-03-29 | 2017-10-10 | 中兴通讯股份有限公司 | The light measuring method and device of image capture device |
| CN105827995A (en) * | 2016-03-30 | 2016-08-03 | 金三立视频科技（深圳）有限公司 | Automatic exposure method and system based on histogram |
| CN106713778A (en) * | 2016-12-28 | 2017-05-24 | 上海兴芯微电子科技有限公司 | Exposure control method and device |
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