WO2015149525A1

WO2015149525A1 - Photographing method and photographic device

Info

Publication number: WO2015149525A1
Application number: PCT/CN2014/091227
Authority: WO
Inventors: 苗雷; 崔小辉; 赵蕴泽
Original assignee: 努比亚技术有限公司
Priority date: 2014-04-02
Filing date: 2014-11-16
Publication date: 2015-10-08
Also published as: CN103905732A; CN103905732B

Abstract

Disclosed are a photographing method and photographic device, the photographing method comprising the steps of: defining a plurality of photometric areas and a plurality of focusing areas on a photographing screen; acquiring a photo group and displaying any photo in the group, the photo group comprising a plurality of contiguously shot photos and the plurality of photos corresponding to different combinations of the photometric areas and focusing areas; determining a specified photometric area and a specified focusing area on the displayed photo; selecting from the photo group a photo corresponding to a combination of the specified photometric area and the specified focusing area, thus realizing photometry and focusing after photographing, and can accurately restore the independent photometric and focusing effect after selecting photometric and focusing areas after photographing, having advantages of photometry and focusing both beforehand and afterward, and not only satisfying the photographing requirements of a user in different scenarios, but also achieving independent photometry and focusing after photographing, thus greatly improving user experience.

Description

Shooting method and shooting device

Technical field

The invention relates to the field of camera technology, and in particular to a shooting method and a photographing device for taking photometry and focusing after taking a picture.

Background technique

When taking photos, in order to get better shooting results, users can choose different metering methods according to different shooting scenes. For example, the existing photographing device provides a photometry method such as spot metering, average metering, and center weighted metering, and the photographing device adjusts the exposure value of the photographing screen according to the photometric parameter, thereby obtaining a photograph with better exposure effect. In addition, the user can also select the focus point to get a photo of different focus effects.

However, the above metering and focusing methods must be performed before the shutter is pressed, that is, the metering and focusing are taken. For some special shooting scenes that require fast capture of the picture or the user does not have enough time for metering and focus selection, such as shooting fast moving objects, it is more difficult to get better exposure and focus through pre-measurement and focusing, shooting not effectively. Moreover, the existing shooting device can only record a single exposure value and a focal length image at one time, which cannot meet the diverse needs of users.

Summary of the invention

The main object of the present invention is to provide a photographing method and a photographing device, which aim to realize photometry and focusing after photographing first, which can satisfy the shooting requirements of the user in a special use scene, and can obtain photos with different exposure and focusing effects.

In order to achieve the above object, the present invention provides a photographing method comprising the steps of:

Defining a plurality of photometry areas and a plurality of focus areas on the preview screen;

Obtaining a photo group and displaying any one of the photo groups, the photo group including a plurality of photos taken continuously, and at least one photo synthesized by two or more photographs taken; a plurality of photos corresponding to different combinations of the metering area and the focus area;

Determining a designated metering area and a designated focus area on the displayed photo;

A photo corresponding to the combination of the specified photometric area and the designated focus area is called from the photo group.

The invention also proposes a photographing method comprising the steps of:

Defining a plurality of photometry areas and a plurality of focus areas on the photographing screen;

Obtaining a photo group and displaying any one of the photo groups, the photo group including a plurality of photographs taken consecutively, the plurality of photographs corresponding to different combinations of the photometry area and the focus area;

Preferably, the method further includes:

Defining n sub-regions on the photographing screen, n≥2, each sub-region corresponding to one of the photometry regions and one of the focus regions;

N×n photos are taken according to the measurement parameters obtained from each sub-area and the focus parameters are obtained according to each sub-area, and the n×n photos are combined into a photo group.

Preferably, the photographing n×n photos according to obtaining the light metering parameters according to each sub-area and obtaining the focus parameter according to each sub-area includes:

Each of the sub-areas is used as a photometric point to perform photometry, and n photometry parameters are obtained; each sub-area is used as a focus point to focus, and n focus parameters are obtained;

Each of the photometric parameters and each of the focus parameters are combined into a single shooting parameter to capture the captured image, and n×n photos are obtained.

Preferably, the photographing the n×n photos according to obtaining the light metering parameters according to each sub-area and obtaining the focus parameter according to each sub-area includes:

Each of the sub-areas is used as a photometric point to perform photometry, and n first photometric parameters are obtained; each sub-region is used as a focus point to focus, and n first focus parameters are obtained;

Taking the entire shooting picture as a light metering point to perform light metering, obtaining a second metering parameter; focusing the entire shooting picture as a focus point to obtain a second focusing parameter;

Calculating a weighting value of the first metering parameter and the second metering parameter, obtaining n metering weight values; calculating a weighting value of the first focusing parameter and the second focusing parameter, and obtaining n focusing weight values;

Each of the photometric weighting values and each of the focus weighting values are combined into one shooting parameter to capture a photographing screen, and n×n photographs are obtained.

Preferably, the method further includes:

Defining n sub-regions on the photographing screen, n≥2, each sub-region corresponding to one of the photometric regions; defining m sub-regions in the photographing screen, m≥2, each sub-region corresponding to one of the focusing regions;

Obtaining a photometric parameter according to each of the n sub-regions and acquiring n×m photos according to each of the m sub-regions, wherein the n×m photos are combined into a photo group. Preferably, the photo group further includes at least one photo synthesized by two or more photographs taken.

Preferably, the determining the designated photometric area and the designated focus area on the displayed photo comprises:

Determining a photometry position and a focus position specified by the user on the displayed photo according to an operation instruction of the user;

The sub-region corresponding to the photometry position and the focus position is determined, and the sub-region corresponding to the photometry position is used as the designated photometry region, and the sub-region corresponding to the focus position is used as the designated focus region.

Preferably, the determining, according to an operation instruction of the user, the photometry position and the focus position specified by the user on the displayed photo include:

The position where the user touches or clicks on the displayed photo is determined as the photometry position and the in-focus position specified by the user on the displayed photo according to the user's touch or click operation instruction.

Displaying the metering pattern and the focus pattern on the screen;

Setting the photometry pattern and the focus pattern corresponding to the position of the displayed photo as the specified photometry position and focus position;

Preferably, the photographing method further comprises:

If the photometric position or/and the focus position correspond to at least two sub-regions, at least two photos are called from the photo group, and the at least two photos are combined into one new photo.

The invention also provides a photographing device, comprising an acquisition unit, a display unit and a processing unit, wherein:

The acquisition unit is configured to define a plurality of light metering areas and a plurality of focus areas on the shooting screen and obtain Taking a photo group, the photo group includes a plurality of photos taken continuously, the plurality of photos corresponding to different combinations of the photometry area and the focus area;

a display unit configured to display any one of the photos in the photo group;

The processing unit is configured to determine a designated photometric area and a designated focus area on the displayed photo, and call a photo corresponding to the combination of the specified photometric area and the designated focus area from the photo group.

Preferably, the obtaining unit is configured to:

Defining n sub-regions on the photographing screen, n≥2, each sub-region corresponding to one of the photometry regions and one of the focus regions; and invoking a camera to obtain photometric parameters according to each sub-region and according to each sub-region The focus parameters were obtained and n×n photos were taken, and the n×n photos were combined into a photo group.

Preferably, the acquiring unit is configured to: call the camera to separately measure each sub-area as a photometric point, obtain n photometric parameters; respectively focus each sub-region as a focus point to obtain n focus parameters. ; Combine each metering parameter and each focus parameter into a shooting parameter to capture the shooting picture, and obtain n×n photos.

Preferably, the obtaining unit is configured to:

The camera is called to perform photometry with each sub-area as a photometric point, and obtain n first photometric parameters; each sub-region is used as a focus point to focus, and n first focus parameters are obtained;

Preferably, the acquiring unit is configured to: define n sub-regions on the photographing screen, n≥2, each sub-region corresponds to one of the photometric regions; define m sub-regions in the photographing screen, m≥2, each sub- The area corresponds to one of the focus areas; and the camera is called to obtain the light metering parameters according to each of the n sub-areas and obtain the focus parameter according to each of the m sub-areas to take n×m photos. , the n×m photos are combined into a photo group.

Preferably, the processing unit is configured to:

Preferably, the processing unit is configured to determine, according to a touch or click operation instruction of the user, a position touched or clicked by the user on the displayed photo as a photometry position and an in-focus position specified by the user on the displayed photo.

Preferably, the processing unit is configured to:

Generating a photometric pattern and a focus pattern, and controlling the display unit to display;

Moving the photometry pattern and the focus pattern according to an operation instruction of the user, and determining the position of the photometry pattern and the focus pattern corresponding to the displayed photo as the specified photometry position and focus position;

Preferably, the processing unit is configured to: if at least two sub-regions corresponding to the photometry position or/and the focus position, call at least two photos from the photo group, and The two photos are combined into a new photo.

Preferably, the photo group further includes at least one photo synthesized by two or more photographs taken.

The invention provides a method for photographing and focusing after photographing, first obtaining a photo group, which is separately metered and focused by using a plurality of regions of the photographing image as a photometric point and a focus point respectively. The camera is composed of a variety of photos with various exposure and focusing effects. The user can select the metering area and the focus area on the photo group, and select the corresponding photo from the photo group according to the user's selection, so that the user can take a picture. You can get multiple photos that meet your requirements and have better exposure and focus.

Although the invention selects the photometry and the focus after taking the photo first, the photo of the different photometric parameters and the focus parameter has been obtained in the photographing, so that the photometry and the focus area can be selected after the event to accurately restore the previous shooting environment. Independent metering and focusing effects, both before and after the metering and The advantage of coke. Therefore, it not only satisfies the shooting requirements of the user in different use scenes, but also achieves the effects of independent metering and focusing after the event, and can obtain multiple photos with independent metering and focusing effects once captured, greatly improving. user experience.

DRAWINGS

1 is a flow chart of an embodiment of a photographing method of the present invention;

2 is a flow chart showing an example of a photographing process in step S101 of FIG. 1;

Figure 3 is a flow chart showing another example of the photographing process in step S101 of Figure 1;

Fig. 4 is a block diagram showing the configuration of an embodiment of an image pickup apparatus of the present invention.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

detailed description

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The photographing method (image processing method) of the present invention does not require the user to select the metering area and the focus area for metering and focusing before pressing the shutter before taking a photo, but after the photograph is taken, the user selects the photo on the photo. The light area and the focus area will eventually achieve a photo effect that meets the user's needs.

Referring to FIG. 1, an embodiment of a photographing method of the present invention is proposed. The photographing method includes the following steps:

Step S101: Acquire a photo group and display any photo in the photo group

The photo group may be obtained by the photographing device from the outside, or may be acquired by local photographing, and the photo group is composed of a plurality of photographs with different exposure and focusing effects continuously taken, and the photometry parameters and the focusing parameters of each photo are different; It may also further include one or more photos synthesized from different photographs taken.

When shooting, the camera first defines multiple metering areas and multiple focus areas on the shooting screen, and then separately meters each metering area as a metering point and focuses each focus area as a focus point. Different photometric parameters and focus parameters, and multiple photos are taken with a combination of different photometric parameters and focus parameters, that is, multiple photos correspond to different combinations of photometry areas and focus areas, and the multiple photos are combined. Into a photo group.

In specific implementation, n sub-regions can be defined on the shooting screen, n≥2, and each sub-region corresponds to one metering region and one focusing region, which is equivalent to defining n metering regions and n focusing on the shooting screen. region. Then, n×n photos are taken according to the measurement parameters obtained from each sub-area and the focus parameters are obtained according to each sub-area, and the n×n photos are combined into a photo group.

In some embodiments, the light metering area and the focus area defined on the shooting screen may also be different. Specifically, n sub-regions are defined on the photographing screen, and each sub-region corresponds to one photometric region; m sub-regions are defined on the photographing screen, and each sub-region corresponds to one photometric region; assuming m=2n, that is equivalent to N metering areas and 2n focus areas are defined on the shooting screen. At this time, m*n=2n×n photos can be obtained.

Each of the sub-regions may have an interval or may be continuously distributed, and the case of continuous distribution is equivalent to dividing the captured image into a plurality of sub-regions.

The specific photographing process can be as shown in FIG. 2, and includes the following steps:

Step S110: dividing the shooting picture into n sub-regions S1 to Sn, n≥2

When framing, the shooting screen of the ingested framing window is divided into at least two sub-areas, and the shape and size of each sub-area are not limited. Preferably, the captured image is equally divided into n rectangular sub-regions, n≥2, and each sub-region corresponds to one photometric region and one focal region.

Step S111: metering the sub-areas S1, S2, ..., Sn as the light-measuring points, respectively, obtaining n photometric parameters; respectively, focusing the sub-regions S1, S2, ..., Sn as focus points, and obtaining n focus parameters

Performing photometry with the sub-area S1 as the photometric point, calculating an average brightness value within the sub-area S1, and obtaining an exposure value according to the average brightness value, which is the photometric parameter of the obtained sub-area S1, and the The metering parameters are applied to the entire shooting screen as the metering parameters for the entire shooting screen. Similarly, the sub-areas S2, S3, ..., Sn are used as the photometry area for photometry, and finally, n photometry parameters are obtained.

Similarly, the sub-region S1 is focused on the focus point, and the corresponding focal length is calculated. The focal length is the focus parameter of the obtained sub-region S1, and the focus parameter is applied to the entire shooting image as the focusing parameter of the entire shooting image. . Similarly, the sub-regions S2, S3, ..., Sn are focused on the focus point, and finally n focus parameters are obtained.

Step S112: Combine each of the photometric parameters and each of the focus parameters into a shooting parameter to capture the shooting image, obtain n×n photos and combine them into a photo group.

Let n metering parameters be A1, A2...An, n focus parameters are B1, B2...Bn, respectively, and metering parameter A1 is combined with focus parameters B1~Bn to form n shooting parameters, and n photos are taken. and so on, the photometric parameters and the n th in-focus parameter n co n ² obtained pictures, the pictures n ² are combined into a group of photographs. n ² photos correspond to a combination of different metering areas and focus areas.

For example, taking the sub-area S1 as the photometric point and the sub-area Sn as the focus point, the photometry parameter A1 and the focus parameter Bn are combined into one set of imaging parameters, and a photo is taken. Different exposure values and focal lengths correspond to different exposure and focusing effects, so that n exposure values and n focal lengths correspond to n ² photos with different combinations of exposure and focusing effects. The present invention takes a plurality of photos of different exposures and focusing effects at the same time, and each photo is taken by independent metering and focusing technology.

The photographing process can also be as shown in FIG. 3, including the following steps:

Step S120: dividing the shooting picture into n sub-regions S1 to Sn, n≥2

Step S121: metering the sub-areas S1, S2, ..., Sn as the light-measuring points, respectively, and obtaining n first photometric parameters; respectively, focusing the sub-regions S1, S2, ..., Sn as focus points, and obtaining n first focusings parameter

The sub-area S1 is used for photometry, and the average brightness value in the range of the sub-area S1 is calculated, and the exposure value is obtained according to the average brightness value, which is the first photometric parameter. Similarly, the sub-areas S2, S3, ..., Sn are used as the photometric areas for metering, and finally, a total of n first photometric parameters are obtained.

Similarly, the sub-region S1 is focused on the focus point, and the corresponding focal length is calculated, and the focal length is the first focus parameter. And so on, the sub-regions S2, S3, ... Sn are respectively focused on the focus, and finally a total of n first focus parameters are obtained.

Step S122: Performing photometry with the entire photographing screen as a photometric point to obtain a second photometric parameter; focusing the entire photographed image as a focus point to obtain a second focus parameter

The entire photographing screen is used as a photometric point for photometry, the average luminance value of the entire photographing screen is calculated, and an exposure value is obtained according to the average luminance value, which is the second photometric parameter.

Similarly, the entire shooting picture is focused as a focus point, and the corresponding focal length is calculated, which is the second metering parameter.

This step S122 and step S121 can be performed simultaneously or step by step.

Step S123: Calculate the weighting values of the first metering parameter and the second metering parameter, obtain n metering weight values, calculate weight values of the first focus parameter and the second focus parameter, and obtain n focus weight values.

Assuming that the first metering parameter of the sub-area S1 is A1, the second metering parameter of the entire shooting picture is A0, the weighting value C1=XA1+YA0, where X and Y are weighting coefficients; and the weighting value C1 is applied to the entire shooting picture as the final metering parameter of the entire shooting picture. And so on, the weighting values of the first photometric parameters of the sub-regions S2 to Sn and the second photometric parameters of the entire photographing screen are respectively calculated, and finally, n photometric weighting values of C1 to Cn are obtained.

Similarly, assuming that the first focus parameter of the sub-area S1 is B1 and the second focus parameter of the entire photographing picture is B0, the weighting value D1=XB1+YB0, where X and Y are weighting coefficients; and the weighting value D1 is applied. Throughout the shooting screen, as the final focus parameter of the entire shooting screen. Similarly, the weighting values of the first focus parameter of the sub-regions S2 to Sn and the second focus parameter of the entire photographing screen are respectively calculated, and finally, n focus weighting values of D1 to Dn are obtained.

Step S124: Combine each of the photometric weighting values and each of the focus weighting values into a shooting parameter to capture the shooting image, obtain n×n photos and combine them into a photo group.

The photometric weighting value C1 is combined with the focus weighting values D1 to Dn to form n shooting parameters, and n photographs are obtained by shooting, and so on, n photometric weighting values and n focus weighting values will obtain n ² photos. The n ² photos are combined into a photo group. n ² photos correspond to a combination of different metering areas and focus areas.

For example, the sub-area S1 is used as the photometric point, and the sub-area Sn is used as the focus point, and the photometric weighting value C1 and the focus weighting value Dn are combined into one set of imaging parameters, and a photograph is obtained by photographing.

After the photograph is taken, the process proceeds to step S102.

Step S102: determining a specified photometric area and a designated focus area on the displayed photo

After the photographing device obtains the photo group, the photometric pattern and the focus pattern may be displayed on the screen, and the size and shape of the photometric pattern and the focus pattern are not limited, and may be rectangular, circular, triangular, etc., preferably with the size of the aforementioned sub-region. The shape is the same. The position, shape and size of the metering pattern and the focus pattern are adjustable. The user can drag the metering pattern and the focus pattern on the screen to move the position, or directly click on the screen, and the metering pattern and the focus pattern are automatically moved to the user. The location of the click. When the user moves the photometry pattern and the focus pattern to a certain position of the screen, the photographing device determines that the photometry pattern and the focus pattern correspond to the position of the photo, and the photometry pattern corresponds to the position of the photo as the specified photometry. Position, the focus pattern corresponds to the position of the photo as the specified focus position.

In some embodiments, the metering and focusing patterns may not be displayed on the screen, and the user may directly issue an operation instruction by touching or clicking the photo, and the position of the user touching or clicking the photo is taken as the user after receiving the operation instruction. The metering position and focus position specified on the photo, shoot The camera can prompt the user to specify the focus position and metering position by text or voice. The click includes a volley click.

After the photometric position and the in-focus position are determined, the photographing device continues to determine the sub-region corresponding to the photometric position and the in-focus position, and uses the sub-region corresponding to the photometric position as the designated photometric region, and the sub-corresponding region The area serves as the designated focus area. In this embodiment, the blur correspondence is performed, and the metering position and the focus position do not need to accurately correspond to the sub-areas. As long as the metering position or the focus position corresponds to a certain sub-area, the sub-area is used as the designated metering area or designation. Focus area.

Step S104: Calling a photo corresponding to a combination of the specified photometric area and the designated focus area from the photo group and displaying

The photo corresponding to the combination of the specified photometric area and the designated focus area, that is, the photometry parameter is obtained according to the specified photometry area, and the obtained photo is captured according to the specified focus area.

For example, the sub-region corresponding to the photometry position is S3, and the sub-region corresponding to the focus position is S10, and the photographing device calls the sub-region S3 as the photometric point to obtain the photometric parameter from the photo group and obtains the sub-region S10. The obtained photo is taken for the focus point to obtain the focus parameter, and the photo is displayed on the screen in real time for the user to preview. If the user is satisfied after previewing, you can choose to save the photo. You can then continue to select the metering position and focus position on the screen to get photos of other different exposures and focusing effects.

In some embodiments, the photometric position and the focus position can be accurately matched to the sub-area, in which case one metering position or/and the focus position may correspond to two or more sub-areas, and the photographing device is from the photo group. Bring up two or more photos and combine them into a new photo and display it. If the user is satisfied with the preview, you can choose to save the photo. For example, if the photometry position corresponds to two sub-regions S1 and S2, and the focus position corresponds to the sub-region S5, two photos are called from the photo group, and the sub-region S1 is used as the photometric point and the sub-region S5 is used as the focus. The photograph and the photograph in which the sub-region S2 is the photometric point and the sub-region S5 is the focus. When synthesizing the above photographs, weighting synthesis may be performed in a corresponding ratio according to the photometric position or/and the in-focus position corresponding to the area of the different sub-regions.

It can be understood that the photo group may further include one or more photos synthesized by different photos taken; the photo displayed by the device includes any of the plurality of photos taken with different photometric parameters and different focus parameters. One, also including any one of the one or more photos combined by the different photos taken; from the group of photos, the metering parameters are obtained according to the specified metering area and Take the photos taken or the photos they have combined based on the focus parameters specified in the specified focus area. If the user is satisfied after previewing, you can choose to save the photo.

In the photographing method of the present invention, when photographing, multiple regions of the photographing screen are separately used as the photometric point and the focus point for independent metering and focusing, and automatically take out a plurality of photographs having various exposure and focusing effects, and after the photographing is completed, The user then specifies the metering and focusing area, and the corresponding photos are retrieved from the above-mentioned photos according to the metering and focusing area specified by the user for the user to preview, so that the user can obtain multiple pieces satisfying his own requirements by one shooting. A photo of the preferred exposure and focus effect.

The invention provides a solution for first photometry and focusing after photographing, and is particularly suitable for special shooting scenes where the user does not have enough time for metering and focusing selection or needs to quickly capture a picture, such as shooting a fast moving object. Although the invention selects the photometry and the focus after taking the photo first, in fact, multiple photos corresponding to the combination of different photometry areas and different focus areas have been obtained at the time of photographing, so that the photometry area and the focus area can be selected afterwards. After accurate restoration of the independent metering and focusing effects in the previous shooting environment, it has the advantages of metering and focusing before and after. Therefore, it not only satisfies the shooting requirements of the user in different use scenes, but also achieves the effects of independent metering and focusing after the event, and can obtain multiple photos with independent metering and focusing effects once captured, greatly improving. user experience.

Referring to FIG. 4, an embodiment of a photographing apparatus (image processing apparatus) of the present invention is proposed. The photographing apparatus may be a camera and a terminal device such as a mobile phone or a tablet computer having a photographing function. The photographing apparatus is an photographing apparatus that realizes the above photographing method, and includes an acquisition unit, a display unit, and a processing unit.

The acquiring unit 110 is configured to obtain a photo group, which can be obtained from the outside or can be obtained by local shooting, and the photo group is composed of a plurality of photos with different exposure and focusing effects continuously taken, the photometric parameters of each photo and The focus parameters are different; it may further include one or more photos synthesized from different photographs taken.

When the acquisition unit 110 acquires a photo group by shooting, a plurality of photometry areas and a plurality of focus areas are defined on the photographing screen, and then each of the photometry areas is used as a photometry point for photometry and each focus area is used as a focus point. Focusing to obtain different metering parameters and focusing parameters, and taking multiple photos with different combinations of metering parameters and focusing parameters, that is, multiple photos corresponding to different combinations of metering areas and focusing areas, The photos are combined into a photo group.

In a specific implementation, n sub-regions can be defined on the shooting screen, n≥2, and each sub-region corresponds to one photometric region and one focusing region, which is equivalent to defining n photometric regions on the shooting screen. And n focus areas. Then, n×n photos are taken according to the measurement parameters obtained from each sub-area and the focus parameters are obtained according to each sub-area, and the n×n photos are combined into a photo group.

In addition, the light metering area and the focus area defined by the acquisition unit on the shooting screen may also be different. Specifically, n sub-regions are defined on the photographing screen, and each sub-region corresponds to one photometric region; m sub-regions are defined on the photographing screen, and each sub-region corresponds to one photometric region; assuming m=2n, that is equivalent to N metering areas and 2n focus areas are defined on the shooting screen. At this time, m*n=2n×n photos can be obtained.

The shape and size of each sub-area are not limited, and each sub-area may have an interval or a continuous distribution. The continuous distribution is equivalent to dividing the photographed picture into a plurality of sub-areas. Preferably, the photographing screen is equally divided into n rectangular sub-regions S1 to Sn, n≥2.

In some embodiments, the acquisition unit 110 applies the photometric parameters and the focus parameters of each sub-area to the entire photographing screen, respectively obtaining n photometric parameters and n focus parameters, and then each of the photometric parameters and each A combination of focus parameters is a shooting parameter to capture the shooting picture, and n×n photos are obtained and combined into a photo group.

Specifically, the acquiring unit 110 performs photometry with the sub-region S1 as a photometric point, calculates an average luminance value within a range of the sub-region S1, and obtains an exposure value according to the average luminance value, where the exposure value is obtained by measuring the sub-region S1. The light parameter is applied to the entire shooting picture as the metering parameter of the entire shooting picture. Similarly, the sub-areas S2, S3, ..., Sn are used as the photometry area for photometry, and finally, n photometry parameters are obtained. Similarly, the sub-region S1 is focused on the focus point, and the corresponding focal length is calculated. The focal length is the focus parameter of the obtained sub-region S1, and the focus parameter is applied to the entire shooting image as the focusing parameter of the entire shooting image. . Similarly, the sub-regions S2, S3, ..., Sn are focused on the focus point, and finally n focus parameters are obtained.

Let n metering parameters be A1, A2...An, n focus parameters are B1, B2...Bn, respectively, and metering parameter A1 is combined with focus parameters B1~Bn to form n shooting parameters, and n photos are taken. and so on, the photometric parameters and the n th in-focus parameter n co n ² obtained pictures, the pictures n ² are combined into a group of photographs. For example, taking the sub-area S1 as the photometric point and the sub-area Sn as the focus point, the photometry parameter A1 and the focus parameter Bn are combined into one set of imaging parameters, and a photo is taken. Different exposure values and focal lengths correspond to different exposure and focusing effects, so that n exposure values and n focal lengths correspond to n ² photos with different combinations of exposure and focusing effects.

In other embodiments, the acquisition unit 110 also uses the entire captured image as a light metering point and The focus is separately metered and focused to obtain the metering and focusing parameters, and combined with the metering and focusing parameters of each sub-area for comprehensive calculation.

Specifically, the acquiring unit 110 performs metering using the sub-regions S1, S2, . . . , Sn as the light-measuring points, and obtains n first photometric parameters; respectively, focusing the sub-regions S1, S2, and . The first focus parameter. At the same time, the entire shooting picture is used as the light metering point to perform the metering, and the second metering parameter is obtained; the entire shooting picture is used as the focus point to focus, and the second focus parameter is obtained.

Then, the obtaining unit 110 calculates weighting values of each of the first photometric parameters and the second photometric parameters, and obtains n photometric weighting values; and calculates weighting values of each of the first focusing parameters and the second focusing parameters to obtain n focus weighting values. Assuming that the first photometric parameter of the sub-area S1 is A1, and the second photometry parameter of the entire photographing picture is A0, the weighting value C1=XA1+YA0, where X and Y are weighting coefficients; and the weighting value C1 is applied to The entire shooting screen serves as the final metering parameter for the entire shooting screen. And so on, the weighting values of the first photometric parameters of the sub-regions S2 to Sn and the second photometric parameters of the entire photographing screen are respectively calculated, and finally, n photometric weighting values of C1 to Cn are obtained. Similarly, assuming that the first focus parameter of the sub-area S1 is B1 and the second focus parameter of the entire photographing picture is B0, the weighting value D1=XB1+YB0, where X and Y are weighting coefficients; and the weighting value D1 is applied. Throughout the shooting screen, as the final focus parameter of the entire shooting screen. Similarly, the weighting values of the first focus parameter of the sub-regions S2 to Sn and the second focus parameter of the entire photographing screen are respectively calculated, and finally, n focus weighting values of D1 to Dn are obtained.

Finally, the acquisition unit 110 combines each of the photometric weighting values and each of the focus weighting values into a single shooting parameter to capture the captured image, and obtains n×n photos and combines them into a photo group. The photometric weighting value C1 is combined with the focus weighting values D1 to Dn to form n shooting parameters, and n photographs are obtained by shooting, and so on, n photometric weighting values and n focus weighting values will obtain n ² photos. The n ² photos are combined into a photo group. For example, the sub-area S1 is used as the photometric point, and the sub-area Sn is used as the focus point, and the photometric weighting value C1 and the focus weighting value Dn are combined into one set of imaging parameters, and a photograph is obtained by photographing.

The display unit 120 is configured to display visual content on the screen, including a shooting picture and a photo, the photo including any one of the photo groups.

The processing unit 130 is configured to determine a designated photometry area and a designated focus area on the displayed photo, and call a photo corresponding to the combination of the designated photometry area and the designated focus area from the photo group.

In some embodiments, the processing unit 130 generates a photometric pattern and a focus pattern on the screen, and The display unit 120 is controlled to display; then, the light metering pattern and the focus pattern are moved according to an operation instruction of the user, and the position of the photometry pattern and the focus pattern corresponding to the photograph is used as the designated photometric position and the in-focus position. The size and shape of the photometric pattern and the focus pattern are not limited and may be rectangular, circular, triangular, etc., preferably the same as the size and shape of the aforementioned sub-region. The position, shape and size of the metering pattern and the focus pattern are adjustable. The user can drag the metering pattern and the focus pattern on the screen to move the position, or directly click on the screen, and the metering pattern and the focus pattern are automatically moved to the user. The location of the click. When the user moves the photometry pattern and the focus pattern to a certain position of the screen, the processing unit 130 determines that the photometry pattern and the focus pattern correspond to the position of the photo, and the photometry pattern corresponds to the position of the photo as the specified photometric position. , the focus pattern corresponds to the position of the photo as the specified focus position.

In other embodiments, the processing unit 130 does not generate a metering and focusing pattern on the screen, and the user can directly issue an operation instruction by touching or clicking the photo, and the processing unit 130 touches or clicks the position of the photo after receiving the operation instruction. As the photometry position and the focus position specified by the user on the photo, the processing unit 130 may prompt the user to select the focus position and the photometry position step by step by text or voice. The click includes a volley click.

After determining the photometric position and the in-focus position, the processing unit 130 continues to determine the sub-region corresponding to the photometric position and the in-focus position, and uses the sub-region corresponding to the photometric position as the designated photometric region, and corresponds to the in-focus position. The sub-area serves as the designated focus area. Finally, the processing unit 130 calls a photo taken by the photo group to obtain the photometry parameter by specifying the photometry area as the photometry point and obtaining the focus parameter with the designated focus area as the focus point.

In some embodiments, the processing unit 130 blurs the photometry position and the focus position to the sub-area, that is, the photometry position and the focus position do not need to accurately correspond to the sub-area, as long as the photo-measurement position or the focus position and a certain sub-area If most of the areas correspond, the sub-area is used as the designated metering area or the designated focus area. In this case, each metering position and focus position respectively correspond to only one sub-area. For example, the sub-region corresponding to the photometry position is S3, and the sub-region corresponding to the focus position is S10, and the processing unit 130 calls the sub-region S3 as the photometric point and the sub-region S10 as the focus point from the photo group. The obtained photo is taken, and the display unit 120 is controlled to display the photo in real time on the screen for the user to preview. If the user is satisfied after previewing, you can choose to save the photo. You can then continue to select the metering position and focus position on the screen to get photos of other different exposures and focusing effects.

In other embodiments, the processing unit 130 accurately corresponds the photometry position and the focus position to the sub-region, and at this time, one photometry position or/and the focus position may correspond to two or more sub-regions. The processing unit 130 then recalls two or more photos from the photo group, and combines them into a new photo, and controls the display unit 120 to display. If the user is satisfied after previewing, the photo may be saved. For example, the photometric position corresponds to two sub-regions S1 and S2, and the in-focus position corresponds to the sub-region S5. The processing unit 130 calls two photos from the photo group, respectively, using the sub-region S1 as the photometric point and the sub-region S5 as the pair. A photograph of the focus and a photograph in which the sub-region S2 is the photometric point and the sub-region S5 is the focus. When synthesizing the above photographs, weighting synthesis may be performed in a corresponding ratio according to the photometric position or/and the in-focus position corresponding to the area of the different sub-regions.

It can be understood that the photo group acquired by the obtaining unit 110 may further include one or more photos synthesized by the different photographs taken; the photo displayed by the display unit 120 includes the photographed different light metering parameters and different focus parameters. Any one of the plurality of photos also includes any one of the one or more photos synthesized by the different photos taken; the processing module 130 calls the photometric parameter from the photo group to obtain the photometric parameter according to the specified photometric area. The captured photos or the photos they are combined are taken according to the focus parameters specified in the specified focus area. If the user is satisfied after previewing, you can choose to save the photo.

The photographing device of the present invention automatically separates and photographs a plurality of areas of the photographing screen as a photometric point and a focus point, and automatically takes out a plurality of photographs having various exposure and focusing effects, and after the photographing is completed, The user then specifies the metering and focusing area, and the corresponding photos are retrieved from the above-mentioned photos according to the metering and focusing area specified by the user for the user to preview, so that the user can obtain multiple pieces satisfying his own requirements by one shooting. A photo of the preferred exposure and focus effect.

The photographing device for photographing and then metering provided by the invention is particularly suitable for a special shooting scene in which the user does not have enough time for metering and focusing selection or needs to quickly capture a picture, such as a situation in which a fast moving object is photographed. Although the invention selects the photometry and the focus after taking the photo first, in fact, multiple photos corresponding to the combination of different photometry areas and different focus areas have been obtained at the time of photographing, so that the photometry area and the focus area can be selected afterwards. After accurate restoration of the independent metering and focusing effects in the previous shooting environment, it has the advantages of metering and focusing before and after. Therefore, it not only satisfies the shooting requirements of the user in different use scenes, but also achieves the effects of independent metering and focusing after the event, and can obtain multiple photos with independent metering and focusing effects once captured, greatly improving. user experience.

It will be understood by those skilled in the art that all or part of the steps of the foregoing embodiments may be implemented by a program to control related hardware, and the program may be stored in a computer readable storage medium, and the storage medium may be It is ROM/RAM, disk, CD, etc.

The preferred embodiments of the present invention have been described above with reference to the drawings, and are not intended to limit the scope of the invention. A person skilled in the art can implement the invention in various variants without departing from the scope and spirit of the invention. For example, the features of one embodiment can be used in another embodiment to obtain a further embodiment. Any modifications, equivalent substitutions and improvements made within the technical concept of the invention are intended to be included within the scope of the invention.

Industrial applicability

The photographing method and apparatus for photographing and photographing after the present invention are particularly suitable for a special shooting scene in which the user does not have enough time for metering and focusing selection or needs to quickly capture a picture, such as a situation in which a fast moving object is photographed. Although the invention selects the photometry and the focus after taking the photo first, in fact, multiple photos corresponding to the combination of different photometry areas and different focus areas have been obtained at the time of photographing, so that the photometry area and the focus area can be selected afterwards. After accurate restoration of the independent metering and focusing effects in the previous shooting environment, it has the advantages of metering and focusing before and after. Therefore, it not only satisfies the shooting requirements of the user in different use scenes, but also achieves the effects of independent metering and focusing after the event, and can obtain multiple photos with independent metering and focusing effects once captured, greatly improving. user experience.

Claims

A shooting method comprising the steps of:

Defining a plurality of photometry areas and a plurality of focus areas on the preview screen;

Obtaining a photo group and displaying any one of the photo groups, the photo group including a plurality of photos taken continuously, and at least one photo synthesized by two or more photographs taken; a plurality of photos corresponding to different combinations of the metering area and the focus area;

Determining a designated metering area and a designated focus area on the displayed photo;

A photo corresponding to the combination of the specified photometric area and the designated focus area is called from the photo group.
A shooting method comprising the steps of:

Defining a plurality of photometry areas and a plurality of focus areas on the photographing screen;

Obtaining a photo group and displaying any one of the photo groups, the photo group including a plurality of photographs taken consecutively, the plurality of photographs corresponding to different combinations of the photometry area and the focus area;

Determining a designated metering area and a designated focus area on the displayed photo;

A photo corresponding to the combination of the specified photometric area and the designated focus area is called from the photo group.
The photographing method according to claim 2, wherein the method further comprises:

Defining n sub-regions on the photographing screen, n≥2, each sub-region corresponding to one of the photometry regions and one of the focus regions;

N×n photos are taken according to the measurement parameters obtained from each sub-area and the focus parameters are obtained according to each sub-area, and the n×n photos are combined into a photo group.
The photographing method according to claim 3, wherein the photographing the n x n photographs according to each of the sub-regions and obtaining the focus parameters according to each sub-region respectively comprises:

Each of the sub-areas is used as a photometric point to perform photometry, and n photometry parameters are obtained; each sub-area is used as a focus point to focus, and n focus parameters are obtained;

Each of the photometric parameters and each of the focus parameters are combined into a single shooting parameter to capture the captured image, and n×n photos are obtained.
The photographing method according to claim 3, wherein the photographing the n x n photographs according to each of the sub-regions and obtaining the focus parameters according to each sub-region respectively comprises:

Each of the sub-areas is used as a photometric point to perform photometry, and n first photometric parameters are obtained; each sub-region is used as a focus point to focus, and n first focus parameters are obtained;

Taking the entire shooting picture as a light metering point to perform light metering, obtaining a second metering parameter; focusing the entire shooting picture as a focus point to obtain a second focusing parameter;

Calculating a weighting value of the first metering parameter and the second metering parameter, obtaining n metering weight values; calculating a weighting value of the first focusing parameter and the second focusing parameter, and obtaining n focusing weight values;

Each of the photometric weighting values and each of the focus weighting values are combined into one shooting parameter to capture a photographing screen, and n×n photographs are obtained.
The photographing method according to claim 2, wherein the method further comprises:

Defining n sub-regions on the photographing screen, n≥2, each sub-region corresponding to one of the photometric regions; defining m sub-regions in the photographing screen, m≥2, each sub-region corresponding to one of the focusing regions;

Obtaining a photometric parameter according to each of the n sub-regions and acquiring n×m photos according to each of the m sub-regions, wherein the n×m photos are combined into a photo group.
The photographing method according to claim 2, wherein the photo group further includes at least one photograph synthesized from two or more photographs taken.
The photographing method according to claim 3, wherein the determining the designated photometric area and the designated focus area on the displayed photograph comprises:

Determining a photometry position and a focus position specified by the user on the displayed photo according to an operation instruction of the user;

The sub-region corresponding to the photometry position and the focus position is determined, and the sub-region corresponding to the photometry position is used as the designated photometry region, and the sub-region corresponding to the focus position is used as the designated focus region.
The photographing method according to claim 8, wherein the determining, according to an operation instruction of the user, the photometry position and the focus position specified by the user on the displayed photo include:

The position where the user touches or clicks on the displayed photo is determined as the photometry position and the in-focus position specified by the user on the displayed photo according to the user's touch or click operation instruction.
The photographing method according to claim 3, wherein the determining the designated photometric area and the designated focus area on the displayed photograph comprises:

Displaying the metering pattern and the focus pattern on the screen;

Setting the photometry pattern and the focus pattern corresponding to the position of the displayed photo as the specified photometry position and focus position;

The sub-region corresponding to the photometry position and the focus position is determined, and the sub-region corresponding to the photometry position is used as the designated photometry region, and the sub-region corresponding to the focus position is used as the designated focus region.
The photographing method according to claim 8, wherein the method further comprises:

If the photometric position or/and the focus position correspond to at least two sub-regions, at least two photos are called from the photo group, and the at least two photos are combined into one new photo.
A photographing device includes an acquisition unit, a display unit, and a processing unit, wherein:

An acquisition unit configured to define a plurality of photometry areas and a plurality of focus areas on a photographing screen, the photo group including a plurality of photographs taken continuously, the plurality of photographs corresponding to different photometry areas Combination with the focus area;

a display unit configured to display any one of the photos in the photo group;

The processing unit is configured to determine a designated photometric area and a designated focus area on the displayed photo, and call a photo corresponding to the combination of the specified photometric area and the designated focus area from the photo group.
The photographing apparatus according to claim 12, wherein the acquisition unit is configured to:

Defining n sub-regions on the photographing screen, n≥2, each sub-region corresponding to one of the photometry regions and one of the focus regions; and invoking a camera to obtain photometric parameters according to each sub-region and according to each sub-region The focus parameters were obtained and n×n photos were taken, and the n×n photos were combined into a photo group.
The photographing apparatus according to claim 13, wherein the acquiring unit is configured to: call the camera to perform photometry with each sub-region as a photometric point, and obtain n photometric parameters; each sub-region is used as a pair The focus is focused to obtain n focus parameters; each metering parameter and each focus parameter are combined into one shooting parameter to capture the shooting picture, and n×n photos are obtained.
The photographing apparatus according to claim 13, wherein the acquisition unit is configured to:

The camera is called to perform photometry with each sub-area as a photometric point, and obtain n first photometric parameters; each sub-region is used as a focus point to focus, and n first focus parameters are obtained;

Taking the entire shooting picture as a light metering point to perform light metering, obtaining a second metering parameter; focusing the entire shooting picture as a focus point to obtain a second focusing parameter;

Calculating a weighting value of the first metering parameter and the second metering parameter, obtaining n metering weight values; calculating a weighting value of the first focusing parameter and the second focusing parameter, and obtaining n focusing weight values;

Each of the photometric weighting values and each of the focus weighting values are combined into one shooting parameter to capture a photographing screen, and n×n photographs are obtained.
The photographing apparatus according to claim 12, wherein the acquisition unit is configured to: define n sub-regions on the photographing screen, n≥2, each sub-region corresponding to one of the photometry regions; and define m sub-graphs on the photographing screen a region, m≥2, each sub-region corresponding to one of the focus regions; and invoking a camera to obtain a photometric parameter according to each of the n sub-regions and obtaining a focus according to each of the m sub-regions n×m photos were taken with parameters, and the n×m photos were combined into a photo group.
The photographing apparatus according to claim 13, wherein the processing unit is configured to:

Determining a photometry position and a focus position specified by the user on the displayed photo according to an operation instruction of the user;

The sub-region corresponding to the photometry position and the focus position is determined, and the sub-region corresponding to the photometry position is used as the designated photometry region, and the sub-region corresponding to the focus position is used as the designated focus region.
The photographing apparatus according to claim 17, wherein the processing unit is configured to determine, at a touch or click operation instruction of the user, a position where the user touches or clicks on the displayed photo as the user specifies on the displayed photo Metering position and focus position.
The photographing apparatus according to claim 13, wherein the processing unit is configured to:

Generating a photometric pattern and a focus pattern, and controlling the display unit to display;

Moving the photometry pattern and the focus pattern according to an operation instruction of the user, and determining the position of the photometry pattern and the focus pattern corresponding to the displayed photo as the specified photometry position and focus position;

The sub-region corresponding to the photometry position and the focus position is determined, and the sub-region corresponding to the photometry position is used as the designated photometry region, and the sub-region corresponding to the focus position is used as the designated focus region.
The photographing apparatus according to claim 17, wherein the processing unit is configured to: if at least two sub-regions corresponding to the photometry position or/and the focus position, call at least two from the photo group Two photos and combine the at least two photos into a new photo.
The photographing apparatus according to claim 12, wherein said photo group further comprises at least one A photo composed of two or more taken photos.