CN113014813A - Focal length adjusting method and device, electronic equipment and storage medium - Google Patents
Focal length adjusting method and device, electronic equipment and storage medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
- H04N23/675—Focus control based on electronic image sensor signals comprising setting of focusing regions
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Abstract
The present disclosure provides a focal length adjustment method and apparatus, an electronic device, and a storage medium, where the method may include: detecting a focus adjustment operation; when the target focal length is adjusted to be out of the recommended zooming range of the currently used first camera by the focal length adjusting operation, determining whether a second camera with a corresponding recommended zooming range meeting the target focal length exists; if the target focal length does not exist, outputting a reminding message for installing an optical accessory, wherein a recommended zoom range formed by the optical accessory and at least one camera on the head-mounted equipment in a matched mode meets the target focal length. This openly can be at the in-process of user's focus of adjustment, in time remind the user to install correct optical accessories, save the time that the user selected optical accessories when promoting the shooting effect, make the user can shoot the image that has the best effect fast.
Description
Technical Field
The present disclosure relates to the field of electronic technologies, and in particular, to a method and an apparatus for adjusting a focal length, an electronic device, and a storage medium.
Background
With the development of intelligent electronic devices, head-mounted devices are becoming an increasingly multi-user choice. The head-mounted equipment at the present stage generally has a shooting function, and in order to improve the shooting effect, the head-mounted equipment can be provided with a plurality of cameras, and the shooting requirements of users under different scenes can be met by installing optical accessories when necessary. However, since the optical accessory and the main body of the head-mounted device are normally separated from each other, it is not easy for the user to think of optimizing the shooting effect by using the optical accessory during shooting, and it is difficult for the user to determine the optimal time for using the optical accessory, which eventually results in that the quality of the shot image is not optimal and the user experience is reduced.
Disclosure of Invention
In view of the above, the present disclosure provides a method and an apparatus for adjusting a focal length, an electronic device, and a storage medium.
Specifically, the present disclosure is realized by the following technical scheme:
according to a first aspect of the present disclosure, a focal length adjustment method is provided, which is applied to a head-mounted device, where at least two cameras are disposed on the head-mounted device, and each camera has a recommended zoom range that does not exceed a maximum zoom range, where the method includes:
detecting a focus adjustment operation;
when the target focal length is adjusted to be out of the recommended zooming range of the currently used first camera by the focal length adjusting operation, determining whether a second camera with a corresponding recommended zooming range meeting the target focal length exists;
if the target focal length does not exist, outputting a reminding message for installing an optical accessory, wherein a recommended zoom range formed by the optical accessory and at least one camera on the head-mounted equipment in a matched mode meets the target focal length.
According to a second aspect of the present disclosure, a focal length adjusting apparatus is provided, which is applied to a head-mounted device, the head-mounted device is provided with at least two cameras, each camera has a recommended zoom range that does not exceed a maximum zoom range, and the apparatus includes:
a detection unit for detecting a focus adjustment operation;
the determining unit is used for determining whether a second camera exists, wherein the corresponding recommended zooming range meets the target focal length, when the focal length adjusting operation adjusts the target focal length to be out of the recommended zooming range of the first camera used currently;
the first reminding unit is used for outputting a reminding message for installing an optical accessory when a corresponding recommended zooming range of a second camera which meets the target focal length does not exist, wherein the recommended zooming range formed by the optical accessory and at least one camera on the head-mounted equipment in a matched mode meets the target focal length.
According to a third aspect of the present disclosure, there is provided an electronic device comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor implements the method as described in the embodiments of the first aspect above by executing the executable instructions.
According to a fourth aspect of embodiments of the present disclosure, there is provided a computer readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the steps of the method as described in the embodiments of the first aspect above.
According to the technical scheme, the method and the device for installing the optical accessory can output the reminding message for installing the optical accessory in time when the second camera with the recommended zooming range meeting the target focal length does not exist through detecting the focal length adjusting operation, so that a user is reminded to install the optical accessory when the head-mounted equipment is used for shooting, and the optimal shooting effect is achieved. Moreover, the recommended zoom range formed by matching the optical accessory with the at least one camera on the head-mounted device meets the target focal length, which means that the optical accessory with different specifications can be reminded to a user according to the target focal length, so that the user does not need to judge the specific specification of the installed optical accessory according to the shot scene, the situation that the user replaces the optical accessory with the optical accessory which is not suitable for the user is avoided, the matching degree of the selected optical accessory and the target focal length is improved, the shooting efficiency of the user is improved, and the user is helped to quickly adjust the image shooting effect to the best effect.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a flow chart illustrating a focus adjustment method according to an exemplary embodiment of the present disclosure;
fig. 2 is a schematic diagram of a head mounted device shown in accordance with an exemplary embodiment of the present disclosure;
FIG. 3 is a flow chart illustrating another method of focus adjustment according to an exemplary embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of an electronic device for adjusting focal length according to an exemplary embodiment of the disclosure;
fig. 5 is a block diagram illustrating a focus adjustment apparatus according to an exemplary embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
The embodiments of the present disclosure are explained in detail below.
Fig. 1 is a flowchart illustrating a focus adjustment method according to an exemplary embodiment of the present disclosure. As shown in fig. 1, the method is applied to a head-mounted device, where at least two cameras are disposed on the head-mounted device, each camera has a recommended zoom range that does not exceed a maximum zoom range, for example, due to different specifications of each camera, the zoom ranges also differ, for example, the maximum zoom range of any camera is 5X to 20X, where X represents a zoom multiple, which indicates that the camera can meet a zoom requirement of zooming 5 times to 20 times, and if the recommended zoom range of the camera is 5X to 14X, which indicates that when the camera is used for shooting, a shooting effect in the zoom range of 5 times to 14 times is better, although the camera can reach a zoom multiple greater than 14, when the zoom range exceeds 14 times, quality of a shot image may be degraded, for example, image resolution may be degraded, and a shot object in the image may be deformed, and the like, therefore, the recommended zoom range of each camera is used to help ensure the quality of the shot picture; in addition, the head-mounted device may be in the form of glasses, a helmet, a hat, etc., and the present disclosure does not limit the specific form of the head-mounted device. With reference to fig. 1, the above method may include the following steps:
step 102: a focus adjustment operation is detected.
In one embodiment, a user can adjust a focal length value adopted in shooting in the shooting process, the larger the focal length value is, the farther a scene can be shot clearly, and conversely, the smaller the focal length value is, the closer a scene can be shot clearly; the method includes that a user can increase or reduce a focal length used in shooting through different operation modes in the shooting process, for example, when a touch area is arranged on the head-mounted device, the user can adjust the focal length through sliding, clicking and other operations on the touch area, specifically, sliding in any direction is an increased focal length, sliding in the opposite direction of any direction is a reduced focal length, the sliding distance is positively correlated with a zoom multiple, or two fingers slide together to be a reduced focal length, the two fingers slide open to be an increased focal length, the closing or opening amplitude is positively correlated with the zoom multiple, or single-finger double-click operation is an increased focal length, continuous single-finger double-click is a continuous increased focal length, double-finger double-click is a reduced focal length, continuous double-finger double-click is a continuous reduced focal length, and the zoom multiple is positively correlated with the number of continuous clicks; in addition, the user may also perform the focal length adjustment by inputting a specific value of the focal length, for example, the user inputs 10, which indicates that the user needs to adjust the zoom multiple used in the shooting to 10 times, and all the operations that can adjust the focal length used in the shooting may be classified as the focal length adjustment operations, and the disclosure does not limit the specific type of the focal length adjustment operations.
Step 104: and when the target focal length is adjusted to be out of the recommended zooming range of the currently used first camera by the focal length adjusting operation, determining whether a second camera with the corresponding recommended zooming range meeting the target focal length exists.
In one embodiment, in order to widen the usable focal length range when shooting is performed by using the head-mounted device, a plurality of cameras with different maximum zoom ranges may be provided on the head-mounted device, in an example of providing two cameras on the head-mounted device, assuming that the maximum zoom range of the previous camera is 2X to 10X, the recommended zoom range of the previous camera is 2X to 5X, the maximum zoom range of the next camera is 5X to 20X, the recommended zoom range of the previous camera is 5X to 14X, when the camera currently used by the user is a camera with a recommended zoom range of 2X to 5X, and the focal length is adjusted by a focal length adjustment operation that instructs the head-mounted device to adjust the focal length to 16X, when 16X is a target focal length, it is necessary to first determine whether the target focal length exceeds the recommended zoom range of the currently used camera, namely whether the target focal length exceeds 2X to 5X, and whether the target focal length falls within the recommended zoom range of another camera is determined under the condition that the target focal length exceeds 2X to 5X, namely whether 16X falls within the range of 5X to 14X is judged.
It should be noted that, when the user adjusts the focal length through the continuous sliding operation, it is equivalent to continuously sending a focal length adjustment instruction to the head-mounted device, the head-mounted device continuously detects the focal length adjustment operation of the user, a time interval between any two detections may be determined by the performance of the head-mounted device, or may be set to a better engineering experience value, and a target focal length exists every time the instruction is sent during the sliding process of the user, so that it is necessary to continuously determine whether the target focal length exceeds the recommended zoom range of the currently used camera, and further determine whether the recommended zoom range of the second camera exists to meet the target focal length when the target focal length has exceeded the recommended zoom range of the currently used camera.
Step 106: if the target focal length does not exist, outputting a reminding message for installing an optical accessory, wherein a recommended zoom range formed by the optical accessory and at least one camera on the head-mounted equipment in a matched mode meets the target focal length.
In an embodiment, assuming that a camera currently used by the head-mounted device is a camera with a recommended zoom range of 2X to 5X, and only another camera with a recommended zoom range of 5X to 14X is installed on the camera, the user adjusts the target focal length to 16X by the focal length adjustment operation, since 16X has exceeded the recommended zoom range of another camera of 5X to 14X, and there is no other camera with a recommended zoom range satisfying 16X on the head-mounted device, a warning message for installing an optical accessory can be output at this time, so that the recommended zoom range formed by the cooperation of the optical accessory and at least one camera on the head-mounted device satisfies 16X; the optical accessory can be a zoom lens capable of increasing the optical zoom multiple of the camera, or any one of a close-up lens, a macro lens and the like capable of reducing the focal length of the camera, which can change the zoom range of the camera, the type of the optical accessory is not limited by the disclosure, and the optical accessory can act on a single camera or a plurality of cameras, and the disclosure also does not limit the number of cameras matched with the optical accessory; when a user needs to shoot a scene far away from the head-mounted equipment, a zoom lens can be selected, and when the user needs to shoot a scene which is close to the head-mounted equipment and very fine, a close-up lens can be selected; the head-mounted equipment calculates by combining the zoom range of the camera mounted on the head-mounted equipment with the target focal length, and can determine the specific specification corresponding to the optical accessory to be mounted, so that the recommended zoom range formed by the cooperation of the optical accessory and at least one camera on the head-mounted equipment meets the target focal length, and the best shooting effect is achieved.
In an embodiment, the reminding message may be a visual reminding message displayed on the interface of the head-mounted device, and the reminding message may include information of specific specifications and the like corresponding to the optical accessories to be installed, so as to instruct the user to select the optical accessories with the proper specifications according to the reminding message, thereby avoiding the problems that the shooting effect is reduced, time is wasted for replacement and the like caused by the installation of the optical accessories with the wrong specifications; in addition, the reminding message can also be a sound reminding, a vibration reminding and the like, and the specific form of the reminding message is not limited by the disclosure.
In an embodiment, when the focal length adjusting operation adjusts the target focal length from outside the recommended zoom range of all the cameras to within the recommended zoom range of any one of the cameras under the condition that the optical accessory is in the mounted state, a reminding message for removing the optical accessory is output. Specifically, when the user has installed the optical accessory according to the reminding message, and finishes shooting by using the optical accessory and the camera in cooperation, the user may need to adjust the focal length when shooting again, or the object shot by the user is a moving object, and may need to adjust the focal length many times in order to track the object in real time, when the user adjusts the target focal length from outside the recommended zoom range of all the cameras back to the recommended zoom range of any camera, the best shooting effect can be achieved without relying on the optical accessory, and because the installation of the optical accessory is equivalent to the change of the original zoom range of the camera, if the optical accessory is not removed at this time, the original zoom range corresponding to the camera installed with the optical accessory cannot be used, therefore, the reminding message needs to be output to remind the user to remove the installed optical accessory, to maintain high quality shots in subsequent shots.
In an embodiment, when the focal length adjustment operation adjusts the target focal length to the limit focal lengths of all cameras on the head mounted device and continues to repeatedly adjust for the target focal length with the optical accessory in the uninstalled state, a reminder message for installing the optical accessory is output. In particular, the present disclosure also provides a way to trigger the function of outputting an alert message, in a scenario where the head mounted device is actually used, the user may not know the specific zoom range of the head mounted device, during the shooting process, the user will try to adjust the focus to the required value by continuously performing the focus adjustment operation, when the user needs to shoot an ultra-far view or an ultra-close view, the user will usually adjust the currently used focal length value to the limit value, since it is not known that the ultimate focal length of the camera equipped on the head-mounted device at this time has not satisfied the requirement of clear shooting, the user may continue to try to adjust the focal length by repeatedly adjusting the focal length, under the condition, the requirement of shooting by the user can not be met by all the cameras arranged on the head-mounted equipment, and at the moment, the reminding message for installing the optical accessories can be output, so that the user is reminded of using the optical accessories to meet the current shooting requirement in time.
In an embodiment, under the condition that the optical accessory is in an uninstalled state, a scene type corresponding to a picture acquired by a current camera is identified, the optical accessory matched with the identified scene type is determined, and a reminding message for installing the determined optical accessory is output. Specifically, the disclosure also provides another way to trigger the function of outputting the reminding message, before or during shooting, a user can observe a shot picture through a preview interface on the head-mounted device, and since most users do not have professional photographic knowledge, the best focal length required to be used by a current scene may not be predicted in time during shooting, so that during shooting, the best focal length is finally determined by repeatedly adjusting the focal length, when shooting an ultra-far scene and an ultra-near scene, it is even impossible to predict that the special scene needs to additionally use an optical accessory, the disclosure can identify a scene type corresponding to a picture acquired by a current camera, when the scene type belongs to the ultra-far scene, the user is reminded to install a zoom-up lens capable of shooting the ultra-far scene, and when the scene belongs to the ultra-near scene, and reminding a user to install a close-up lens capable of shooting a super close-up scene, wherein the corresponding relation between the scene type and the model of the optical fiber fittings can be stored locally in the head-mounted equipment, and along with the increase of the scene type and the model of the optical fittings, the corresponding relation can also be maintained in a network server, so that the network server is requested to acquire the information of the optical fittings matched with the current scene type, and the information is further fed back to the head-mounted equipment.
In an embodiment, with the optical accessory in an installed state, a focal length of a camera fitted to the optical accessory is adjusted to reach the target focal length with the optical accessory fitted. Specifically, when the optical accessory is mounted to the camera, the zoom range of the camera is changed, for example, the maximum zoom range of the original camera is 2X to 10X, the recommended zoom range is 2X to 5X, when a 2-fold zoom lens is mounted, the maximum zoom range of the camera is changed to 4X to 20X, assuming that a user adjusts the target focal length to 8X, and then the zoom lens is mounted on the original camera, then 8X is amplified to 16X by the zoom lens, in the present disclosure, the focal length of the original camera can be adjusted at this time, so that the focal length of the camera mounted with the optical accessory reaches 8X required by the user, that is, the focal length of the original camera is adjusted to 4X. Through the technical scheme of this embodiment, after the user installed optical accessories, the focus that the camera of cooperation here optical accessories will self was adjusted, makes the user directly obtain the target focus, need not to adjust the focus again, has saved user's operating time, has promoted user's use and has experienced.
In an embodiment, if there is a second camera whose recommended zoom range meets the target focal length, the currently used camera is switched from the first camera to the second camera whose recommended zoom range meets the target focal length, and the current focal length is adjusted to the target focal length. Taking the example of the dual cameras equipped on the head-mounted device, assuming that the maximum zoom range of the camera on the head-mounted device is 2X to 10X, the recommended zoom range of the camera is 2X to 5X, the maximum zoom range of the other camera is 5X to 20X, the recommended zoom range of the camera is 5X to 14X, when the first camera currently used by the user is a camera with a recommended zoom range of 2X to 5X and the focal length is adjusted through the focal length adjustment operation, the operation instructs the head-mounted device to adjust the target focal length to 8X, it is necessary to determine whether the recommended zoom range of the other camera includes 8X, as described above, since the recommended zoom range of the other camera is 5X to 14X and includes the target focal length 8X, the currently used camera can be switched to the second camera with the recommended zoom range of 5X to 14X, and the focal length of the second camera is adjusted to 8X.
In an embodiment, if there is no second camera whose recommended zoom range satisfies the target focal length, the focal length of the first camera is adjusted to a target focal length when the target focal length is within a maximum zoom range of the first camera; for example, still assuming that a head-mounted device is equipped with two cameras, and the maximum zoom range of one camera is 2X to 10X, the recommended zoom range of the camera is 2X to 5X, and the maximum zoom range of the other camera is 5X to 20X, and the recommended zoom range of the camera is 5X to 14X, in the case that the first camera currently used by the user is 5X to 20X, the user adjusts the target focal length to 16X, since there is no recommended zoom range of the other cameras including 16X, and 16X is still within the maximum zoom range of the first camera, the focal length of the first camera may be adjusted to 16X at this time, although it may not be possible to achieve the best shooting effect, but may meet the requirement of the user for the target focal length.
In an embodiment, if there is no second camera whose recommended zoom range satisfies the target focal length, switching the currently used camera from the first camera to the second camera whose maximum zoom range satisfies the target focal length and adjusting the current focal length to the target focal length when the target focal length is outside the maximum zoom range of the first camera and there is a second camera whose maximum zoom range satisfies the target focal length; for example, it is still assumed that the head-mounted device is equipped with two cameras, and the maximum zoom range of one camera is 2X to 10X, the recommended zoom range of the camera is 2X to 5X, the maximum zoom range of the other camera is 5X to 20X, the recommended zoom range of the camera is 5X to 14X, in the case where the maximum zoom range of the first camera currently used by the user is 2X to 10X, the user adjusts the target focal length to 16X, although there is no camera whose recommended focal length satisfies 16X, and 16X has exceeded the maximum zoom range of the first camera, the maximum zoom range of the other camera is 5X to 20X, including 16X, in this case, the currently used camera may be switched from the first camera to a camera having a maximum zoom range of 5X to 20X, which is referred to as the second camera.
In an embodiment, there is another case, assuming that the user directly adjusts the target focal length to be within the maximum zoom ranges of all the cameras, for example, the maximum zoom ranges of the two cameras equipped on the head-mounted device are 2X to 10X and 5X to 20X, respectively, and the user directly adjusts the target focal length to 25X, where the maximum zoom ranges of all the cameras do not satisfy the target focal length, if the camera currently used by the user is a camera with a maximum zoom range of 2X to 10X, the limit focal length 20X of another camera with a maximum zoom range of 5X to 20X is closer to 25X than to 10X, at which time, the camera currently used by the user can be switched from a camera with a maximum zoom range of 2X to 10X to a camera with a maximum zoom range of 5X to 20X, and the target focal length can be adjusted to a value closest to 25X, namely 20X; if the camera currently used by the user is a camera with the maximum zooming range of 5X-20X, the limit focal length of the camera is the camera closest to the target focal length compared with other cameras, and the target focal length of the currently used camera is directly adjusted to the value closest to 25X, namely 20X without switching the cameras.
In an embodiment, in the case that the target focal length is in the maximum zoom ranges of the first camera and the second camera at the same time, the first camera is maintained to be used before the second camera is started, and the currently used camera is switched from the first camera to the second camera after the second camera is determined to be started; still assuming that the head-mounted device is provided with two cameras, and the maximum zoom range of one camera is 2X to 10X, the recommended zoom range of the camera is 2X to 5X, and the camera is referred to as a first camera herein; the maximum zoom range of the other camera is 5X-20X, the recommended zoom range of the camera is 5X-14X, and the camera is called a second camera herein; according to the disclosure of the above embodiment, when the target focal length is gradually adjusted from 2X to 6X by the user through a continuous sliding operation, the 6X exceeds the recommended zoom range of the first camera, but is still within the maximum zoom ranges of the first and second cameras, the first camera may be switched to the second camera when the target focal length exceeds the recommended zoom range of the first camera, in the switching process, the second camera may be waited to be started when the target focal length just exceeds the recommended zoom range of the first camera, in the waiting process, the first camera is kept in use, and after the second camera is started, the currently used camera is switched from the first camera to the second camera.
Optionally, when the user gradually adjusts the target focal length from 2X to 12X through a continuous sliding operation, in a case that the target focal length is simultaneously in the maximum zoom range of the first camera and the second camera, that is, the target focal length is gradually increased from 2X to 10X, and the second camera is not started yet, the first camera is maintained in use, and when the target focal length is continuously adjusted to exceed the maximum zoom range of the first camera, that is, the target focal length is continuously increased from 10X to 12X, the currently used camera is switched from the first camera to the second camera.
Optionally, when the user gradually adjusts the target focal length from 2X to 6X through a continuous sliding operation, in a case that the target focal length is simultaneously in the maximum zoom ranges of the first camera and the second camera, that is, the target focal length gradually increases from 2X to 5X, the first camera is maintained in use, and when the target focal length is continuously adjusted to exceed the recommended zoom range of the first camera, that is, the target focal length continuously increases from 5X to 6X, the currently used camera is switched from the first camera to the second camera.
In the embodiment, the camera is prevented from being switched immediately when the target focal length is adjusted to be out of the recommended zoom range of the currently used camera by the user, and the camera which meets the condition is switched after being started, so that the problem of switching blockage caused by incomplete starting of the camera is prevented, and the fluency in the lens switching process is improved.
In an embodiment, when the focal length adjustment operation is used to instruct to adjust the target focal length from the maximum zoom range corresponding to the first camera to the maximum zoom range corresponding to the second camera, and when there is a maximum zoom range corresponding to another camera between the maximum zoom range corresponding to the first camera and the maximum zoom range corresponding to the second camera, if a duration that a value of the target focal length falls within the maximum zoom range of the another camera is not greater than a preset duration, the another camera is skipped in a process of switching the currently used camera from the first camera to the second camera. For example, the head-mounted device is equipped with 3 cameras, the maximum zoom range of each camera is continuous or partially overlapped, and the maximum zoom range of each camera is assumed to be as follows from small to large: 2X to 10X, 5X to 20X, and 14X to 30X, when the user continuously adjusts the target focal length from the current 2X to 25X by the fast sliding operation, and the time length of the target focal length falling into 5X to 20X is less than the preset time length, the currently used camera may be directly switched to the camera with the maximum zoom range of 14X to 30X, instead of switching the currently used camera to the camera with the maximum zoom range of 5X to 20X first and then to the camera with the maximum zoom range of 14X to 30X. Through this embodiment, can directly open the camera that the user finally needed when the user constantly adjusts the magnification of zooming through the quick slip operation, skip the step of opening the camera that does not need to use, saved and opened required power resource, processing resources etc. of camera, also avoided because the adjustment focus operation is too fast and lead to the camera can't in time switch, and then produce the problem of card pause.
It should be noted that the zoom magnification is taken as an example for the focus adjustment operations mentioned in the above embodiments, and in the practical application process of the present disclosure, the zoom magnification can also be reduced through the focus adjustment operations, and the implementation of the present disclosure is not affected.
In the above embodiment, by detecting the focal length adjustment operation, the disclosure can output a prompt message for installing the optical accessory in time when there is no second camera whose recommended zoom range meets the target focal length, so as to prompt a user to install the optical accessory when the user uses the head-mounted device to shoot, thereby achieving the optimal shooting effect. Moreover, the recommended zoom range formed by matching the optical accessory with the at least one camera on the head-mounted device meets the target focal length, which means that the optical accessory with different specifications can be reminded to a user according to the target focal length, so that the user does not need to judge the specific specification of the installed optical accessory according to the shot scene, the situation that the user replaces the optical accessory with the optical accessory which is not suitable for the user is avoided, the matching degree of the selected optical accessory and the target focal length is improved, the shooting efficiency of the user is improved, and the user is helped to quickly adjust the image shooting effect to the best effect. Meanwhile, the disclosure also provides other methods for triggering and outputting the message for reminding the user of installing the optical accessory, so that the user can receive the reminding message under various conditions and then install the optical accessory in time. And, when being equipped with a plurality of cameras on head-mounted device, this disclosed technical scheme can be according to the target focus automatic switch-over of user's needs to the camera that is fit for the specification to the process of switching over the camera has been optimized, has avoided the card pause problem that appears in the switching over process, has promoted the smoothness nature that the camera switched over.
As shown in fig. 2, the head-mounted device of the smart glasses type is equipped with two cameras, namely a camera 21 and a camera 22, which may be disposed in the middle of the head-mounted device as shown in the figure, or disposed on two sides of the head-mounted device, or at any position of the head-mounted device, and different cameras may be centrally disposed at one position or dispersedly disposed at different positions of the head-mounted device, and the present disclosure does not specially limit the mounting positions of the cameras on the head-mounted device; a touch area 23 is provided on the lens frame, and a user can trigger, close, and adjust various functions or parameters set on the head-mounted device through a touch sliding operation in the touch area 23, for example, a focal length used when the camera shoots can be adjusted through the sliding operation in the touch area. The head-mounted device may further include an optical component 24, the optical component 24 may be fixed in front of at least one camera by means of bayonet, magnetic attraction, or screw-fitting, the mounting manner shown in fig. 2 is to mount the optical component 24 in front of the camera 22, in the process of practical application, an optical component capable of simultaneously acting on multiple cameras may also be used, the optical component may be mounted in front of multiple cameras, the number of cameras fitted with the optical component is not specifically limited in the present disclosure, in addition, the optical component 24 may be an optical component capable of adjusting the zoom range of a camera, such as a zoom lens or a close-up lens, and the zoom lens is described as an example in the following embodiments.
Now, assume that the maximum zoom range of the camera 21 in fig. 2 is 2X to 10X, and the recommended zoom range is 2X to 5X; the maximum zoom range of the camera 22 is 5X-20X, the recommended zoom range is 5X-14X, and the optical accessory 24 is a 2-time zoom lens; fig. 3 is a flow chart illustrating a method of adjusting focus according to an exemplary embodiment of the present disclosure, which may include the following steps; the above steps are described in detail with reference to fig. 2 and 3:
Step 308b2, if the target focal length is beyond the recommended zoom range of the currently used camera 21, which indicates that the effect of shooting will be affected by continuing to use the current camera, at this time, the camera needs to be switched, so step 308b2 is entered to determine if there are other cameras whose recommended zoom range meets the target focal length, and if so, for example, the user adjusts the target focal length to 6X, since the recommended zoom range of the camera 22 is 5X to 14X, the target focal length of 6X can be satisfied, at this time, the currently used camera 21 can be switched to the camera 22, before switching, however, step 310a may be entered, to determine whether the camera head 22 has been started up, if the starting is not completed, the currently used camera can be maintained at the camera 21, and the currently used camera is switched to the camera 22 from the camera 21 after the starting of the camera 22 is completed; or, when the user adjusts the target focal length to between 5X and 6X, since the recommended zoom range of the camera 21 is exceeded but still stays within the maximum zoom range of the camera 21, the camera 21 may be maintained in use at this time, and when the user continues to adjust the target focal length to 6X, the camera 22 is already started and completed at this time, and the lens switching may be performed without being stuck.
In step 312b, if the recommended zoom range of other cameras does not meet the target focal length, for example, the user adjusts the target focal length to 15X, and since the recommended zoom ranges of the cameras 21 and 22 do not meet the target focal length of 18X, step 312b may be entered to output a prompt message for installing the optical accessory, where the prompt message may include information such as the model and specification of the optical accessory to be installed, or may be displayed in a preview interface of the user, or may prompt the user to install the optical accessory by using sound, vibration, or the like.
Step 314b, in a case that the user does not mount the optical accessory, it may be determined whether the target focal length is within the maximum zoom range of the current camera, assuming that the camera currently used by the user is the camera 22, the user adjusts the target focal length to 15X, since 15X is still within the maximum zoom range of the camera 22, it indicates that the camera 22 may satisfy the target focal length, but the quality of the image captured is lower than that captured by the optical accessory 24, at this time, step 316b1 may be entered, and the focal length of the camera 22 is adjusted to the target focal length, so that the user may capture the image using the target focal length even when the optical accessory cannot be mounted.
If the target focal length has exceeded the maximum zoom range of the current camera, then go to step 316b2, and determine whether there is a maximum zoom range of other cameras that can satisfy the target focal length:
assuming that the user currently uses the camera 21 and the target focal length is adjusted to 18X by the focal length adjustment operation, although the maximum zoom range of the currently used camera 21 is exceeded, the target focal length is still within the maximum zoom range of the camera 22, as shown in step 318b21, at this time, the camera 21 may be switched to the camera 22, and the focal length of the camera 22 may be adjusted to 18X to meet the user requirement.
In addition, as shown in step 318b22, assuming that the user currently uses the camera 22 and directly adjusts the target focal length to 25X, the maximum zoom range of the camera 22 is already exceeded, and there is no other camera whose maximum zoom range can satisfy the target focal length, in the above case, the currently used camera can be adjusted to the camera whose limit focal length is closest to the target focal length, and because the camera is the camera 22, the target focal length can be directly adjusted to the limit focal length 20X of the camera 22 without switching the cameras; or, the user currently uses the camera 21 and directly adjusts the target focal length to 25X, which exceeds not only the maximum zoom range of the currently used camera 21 but also the maximum zoom range of the camera 22, in the above case, the currently used camera may be adjusted to the camera whose limit focal length is closest to the target focal length, i.e. the camera 22, and the target focal length may be adjusted to the limit focal length 20X of the camera 22.
It should be noted that the disclosure does not limit the sequence of the different steps, for example, before or after detecting the focal length adjustment operation, it may be determined whether the optical accessory is in the installed state, and meanwhile, the relevant steps are adaptively adjusted, the steps in the above embodiment are only an example of the processing logic corresponding to the focal length adjustment method provided by the disclosure, and modifications that do not depart from the spirit and principle of the disclosure are within the scope of the disclosure.
Corresponding to the method embodiments, the present specification also provides an embodiment of an apparatus.
Fig. 4 is a schematic structural diagram of an electronic device for adjusting a focal length according to an exemplary embodiment of the present disclosure. Referring to fig. 4, at the hardware level, the electronic device includes a processor 402, an internal bus 404, a network interface 406, a memory 408, and a non-volatile memory 410, but may also include hardware required for other services. The processor 402 reads a corresponding computer program from the non-volatile memory 410 into the memory 408 and then runs the computer program to form the focus adjustment apparatus on a logical level. Of course, besides the software implementation, the present disclosure does not exclude other implementations, such as logic devices or a combination of software and hardware, and the like, that is, the execution subject of the following processing flow is not limited to each logic unit, and may also be hardware or logic devices.
Fig. 5 is a block diagram illustrating a focus adjustment apparatus according to an exemplary embodiment of the present disclosure. Referring to fig. 5, the apparatus includes a detecting unit 502, a determining unit 504, and a first reminding unit 506, wherein:
a detection unit 502 for detecting a focus adjustment operation;
a determining unit 504, configured to determine whether there is a second camera whose corresponding recommended zoom range satisfies the target focal length when the focal length adjusting operation adjusts the target focal length to be outside the recommended zoom range of the currently used first camera;
a first reminding unit 506, configured to output a reminding message for installing an optical accessory when there is no second camera whose corresponding recommended zoom range meets the target focal length, where the recommended zoom range formed by the optical accessory in cooperation with at least one camera on the head-mounted device meets the target focal length.
Optionally, the apparatus further includes a second reminding unit 508:
and under the condition that the optical accessory is in the installed state, when the target focal length is adjusted from the outside of the recommended zoom range of all the cameras to the recommended zoom range of any one camera by the focal length adjusting operation, outputting a reminding message for taking down the optical accessory.
Optionally, the apparatus further includes a third prompting unit 510:
when the optical accessory is in an uninstalled state, when the focal length adjusting operation adjusts the target focal length to the limit focal lengths of all cameras on the head-mounted equipment and continues to repeatedly adjust the target focal length, outputting a reminding message of installing the optical accessory; alternatively, the first and second electrodes may be,
and identifying the scene type corresponding to the picture acquired by the current camera, determining the optical accessory matched with the identified scene type, and outputting a reminding message for installing the determined optical accessory.
Optionally, the apparatus further includes an adjusting unit 512:
adjusting a focal length of a camera fitted to the optical accessory to achieve the target focal length in cooperation with the optical accessory in an installed state.
Optionally, the apparatus further includes a switching unit 514:
if the second camera with the recommended zooming range meeting the target focal length exists, the currently used camera is switched from the first camera to the second camera with the recommended zooming range meeting the target focal length, and the current focal length is adjusted to the target focal length;
if the recommended zooming range does not meet the second camera of the target focal length, adjusting the focal length of the first camera to a target focal length under the condition that the target focal length is within the maximum zooming range of the first camera;
if the recommended zooming range does not meet the second camera of the target focal length, under the condition that the target focal length is out of the maximum zooming range of the first camera and the second camera with the maximum zooming range meeting the target focal length exists, switching the currently used camera from the first camera to the second camera with the maximum zooming range meeting the target focal length, and adjusting the current focal length to the target focal length;
if the maximum zooming ranges of all the cameras do not meet the target focal length, adjusting the current focal length to a value closest to the target focal length under the condition that the limit focal length of the first camera is closest to the target focal length;
if the maximum zooming ranges of all the cameras do not meet the target focal length, under the condition that a second camera with the limit focal length closer to the target focal length exists compared with the limit focal length of the first camera, the currently used camera is switched from the first camera to the second camera with the limit focal length closer to the target focal length, and the current focal length is adjusted to the value closest to the target focal length.
The switching unit 514 may be configured to, in a case that the target focal length is within the maximum zoom range of both the first camera and the second camera, maintain to use the first camera before the second camera is started, and switch the currently used camera from the first camera to the second camera after it is determined that the second camera is started;
or under the condition that the target focal length is in the maximum zooming range of the first camera and the second camera at the same time, the first camera is kept used before the second camera is started, and when the target focal length is continuously adjusted to exceed the maximum zooming range of the first camera, the currently used camera is switched from the first camera to the second camera.
The switching unit 514 may be configured to skip the other cameras in a process of switching the currently used camera from the first camera to the second camera if a duration that a value of the target focal length falls within the maximum zoom range of the other cameras is not greater than a preset duration under a condition that the focal length adjustment operation is used to instruct to adjust the target focal length from the maximum zoom range corresponding to the first camera to the maximum zoom range corresponding to the second camera and a maximum zoom range corresponding to the other cameras exists between the maximum zoom range corresponding to the first camera and the maximum zoom range corresponding to the second camera.
The implementation process of the functions and actions of each unit in the above device is specifically described in the implementation process of the corresponding step in the above method, and is not described herein again.
For the device embodiments, since they substantially correspond to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the disclosed solution. One of ordinary skill in the art can understand and implement it without inventive effort.
In an exemplary embodiment, there is also provided a non-transitory computer readable storage medium, e.g. a memory, comprising instructions executable by a processor of a focus adjustment apparatus to perform a method as in any of the above embodiments, such as the method may comprise:
detecting a focus adjustment operation; when the target focal length is adjusted to be out of the recommended zooming range of the currently used first camera by the focal length adjusting operation, determining whether a second camera with a corresponding recommended zooming range meeting the target focal length exists; if the target focal length does not exist, outputting a reminding message for installing an optical accessory, wherein a recommended zoom range formed by the optical accessory and at least one camera on the head-mounted equipment in a matched mode meets the target focal length.
The non-transitory computer readable storage medium may be, among others, ROM, Random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like, and the present disclosure is not limited thereto.
The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. A focal length adjusting method is applied to a head-mounted device, wherein at least two cameras are arranged on the head-mounted device, and each camera has a recommended zoom range which does not exceed a maximum zoom range, and the method comprises the following steps:
detecting a focus adjustment operation;
when the target focal length is adjusted to be out of the recommended zooming range of the currently used first camera by the focal length adjusting operation, determining whether a second camera with a corresponding recommended zooming range meeting the target focal length exists;
if the target focal length does not exist, outputting a reminding message for installing an optical accessory, wherein a recommended zoom range formed by the optical accessory and at least one camera on the head-mounted equipment in a matched mode meets the target focal length.
2. The method of claim 1, further comprising:
and under the condition that the optical accessory is in the installed state, when the target focal length is adjusted from the outside of the recommended zoom range of all the cameras to the recommended zoom range of any one camera by the focal length adjusting operation, outputting a reminding message for taking down the optical accessory.
3. The method of claim 1, further comprising:
when the optical accessory is in an uninstalled state, when the focal length adjusting operation adjusts the target focal length to the limit focal lengths of all cameras on the head-mounted equipment and continues to repeatedly adjust the target focal length, outputting a reminding message of installing the optical accessory; alternatively, the first and second electrodes may be,
and identifying the scene type corresponding to the picture acquired by the current camera, determining the optical accessory matched with the identified scene type, and outputting a reminding message for installing the determined optical accessory.
4. The method of claim 1, further comprising:
adjusting a focal length of a camera fitted to the optical accessory to achieve the target focal length in cooperation with the optical accessory in an installed state.
5. The method of claim 1, further comprising:
if the second camera with the recommended zooming range meeting the target focal length exists, the currently used camera is switched from the first camera to the second camera with the recommended zooming range meeting the target focal length, and the current focal length is adjusted to the target focal length;
if the recommended zooming range does not meet the second camera of the target focal length, adjusting the focal length of the first camera to a target focal length under the condition that the target focal length is within the maximum zooming range of the first camera;
if the recommended zooming range does not meet the second camera of the target focal length, under the condition that the target focal length is out of the maximum zooming range of the first camera and the second camera with the maximum zooming range meeting the target focal length exists, switching the currently used camera from the first camera to the second camera with the maximum zooming range meeting the target focal length, and adjusting the current focal length to the target focal length;
if the maximum zooming ranges of all the cameras do not meet the target focal length, adjusting the current focal length to a value closest to the target focal length under the condition that the limit focal length of the first camera is closest to the target focal length;
if the maximum zooming ranges of all the cameras do not meet the target focal length, under the condition that a second camera with the limit focal length closer to the target focal length exists compared with the limit focal length of the first camera, the currently used camera is switched from the first camera to the second camera with the limit focal length closer to the target focal length, and the current focal length is adjusted to the value closest to the target focal length.
6. The method of claim 5, wherein switching the currently used camera from the first camera to the second camera comprises:
under the condition that the target focal length is in the maximum zooming range of the first camera and the second camera at the same time, the first camera is kept used before the second camera is started, and the currently used camera is switched from the first camera to the second camera after the second camera is determined to be started;
or under the condition that the target focal length is in the maximum zooming range of the first camera and the second camera at the same time, the first camera is kept used before the second camera is started, and when the target focal length is continuously adjusted to exceed the maximum zooming range of the first camera, the currently used camera is switched from the first camera to the second camera.
7. The method of claim 5, wherein switching the currently used camera from the first camera to the second camera comprises:
and under the condition that the focal length adjusting operation is used for indicating that the target focal length is adjusted from the maximum zooming range corresponding to the first camera to the maximum zooming range corresponding to the second camera, and the maximum zooming ranges corresponding to other cameras exist between the maximum zooming range corresponding to the first camera and the maximum zooming range corresponding to the second camera, if the duration that the value of the target focal length falls into the maximum zooming ranges of other cameras is not more than the preset duration, skipping other cameras in the process of switching the currently used camera from the first camera to the second camera.
8. The utility model provides a focal length adjusting device which characterized in that is applied to head mounted equipment, be equipped with two at least cameras on the head mounted equipment, every camera exists the recommended zoom range that does not exceed the maximum zoom range, the device includes:
a detection unit for detecting a focus adjustment operation;
the determining unit is used for determining whether a second camera exists, wherein the corresponding recommended zooming range meets the target focal length, when the focal length adjusting operation adjusts the target focal length to be out of the recommended zooming range of the first camera used currently;
the first reminding unit is used for outputting a reminding message for installing an optical accessory when a corresponding recommended zooming range of a second camera which meets the target focal length does not exist, wherein the recommended zooming range formed by the optical accessory and at least one camera on the head-mounted equipment in a matched mode meets the target focal length.
9. An electronic device, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor implements the method of any one of claims 1-7 by executing the executable instructions.
10. A computer-readable storage medium having stored thereon computer instructions, which when executed by a processor, perform the steps of the method according to any one of claims 1-7.
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