CN110661974B - Image acquisition method and device and electronic equipment - Google Patents
Image acquisition method and device and electronic equipment Download PDFInfo
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- CN110661974B CN110661974B CN201910938481.3A CN201910938481A CN110661974B CN 110661974 B CN110661974 B CN 110661974B CN 201910938481 A CN201910938481 A CN 201910938481A CN 110661974 B CN110661974 B CN 110661974B
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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
- H04N23/62—Control of parameters via user interfaces
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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
- H04N23/61—Control of cameras or camera modules based on recognised objects
- H04N23/611—Control of cameras or camera modules based on recognised objects where the recognised objects include parts of the human body
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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
- H04N23/63—Control of cameras or camera modules by using electronic viewfinders
- H04N23/631—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters
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Abstract
The application discloses an image acquisition method, an image acquisition device and electronic equipment, wherein the method comprises the following steps: obtaining touch operation on a display screen; if the touch operation is in the acquisition area corresponding to the image acquisition device, determining the image acquisition control parameters of the image acquisition device in response to the touch operation, wherein the image acquisition device is positioned below the display screen, and the acquisition area is partially or completely overlapped with the display area of the display screen; and controlling the image acquisition device to acquire images based on the image acquisition control parameters. The scheme of this application can realize the image acquisition of the image acquisition device who is in the display screen below in more convenient control electronic equipment to realize the more accurate image acquisition of image acquisition device.
Description
Technical Field
The present application relates to the field of image processing technologies, and in particular, to an image acquisition method and apparatus, and an electronic device.
Background
With the continuous development of electronic devices, it will become a trend to arrange a camera under the display screen of the electronic device.
The camera disposed below the display screen of the electronic device is also referred to as an off-screen camera. For example, the under-screen camera may be a fingerprint sensor disposed below a display screen of the electronic device, and a fingerprint image in a fingerprint identification area in the display screen may be acquired by the fingerprint sensor; for another example, the off-screen camera may also be a camera that collects normal images like a camera that collects images in an electronic device such as a mobile phone. Under the condition that the electronic equipment is provided with the screen lower camera, how to conveniently control the acquisition of the screen lower camera so as to realize more accurate image acquisition is a technical problem to be solved by technical personnel in the field.
Disclosure of Invention
The application aims to provide an image acquisition method, an image acquisition device and electronic equipment, so that image acquisition of the image acquisition device below a display screen in the electronic equipment can be controlled more conveniently, and more accurate image acquisition of the image acquisition device can be realized.
In order to achieve the purpose, the application provides the following technical scheme:
an image acquisition method comprising:
obtaining touch operation on a display screen;
if the touch operation is in an acquisition area corresponding to an image acquisition device, determining image acquisition control parameters of the image acquisition device in response to the touch operation, wherein the image acquisition device is positioned below the display screen, and the acquisition area is partially or completely overlapped with a display area of the display screen;
and controlling the image acquisition device to acquire images based on the image acquisition control parameters.
Preferably, the image acquisition device is a fingerprint acquisition device, and the acquisition area is a fingerprint acquisition area corresponding to the fingerprint acquisition device;
if the touch operation is in the acquisition area corresponding to the image acquisition device, determining the image acquisition control parameters of the image acquisition device in response to the touch operation, including:
if the touch operation is in a fingerprint acquisition area corresponding to a fingerprint acquisition device, acquiring an image of the fingerprint acquisition area through the fingerprint acquisition device to obtain at least one fingerprint acquisition area image;
determining a positioning parameter of a fingerprint to be acquired in the fingerprint acquisition area according to the at least one fingerprint acquisition area image;
and determining fingerprint acquisition control parameters of the fingerprint acquisition device for acquiring the fingerprint according to the positioning parameters.
Preferably, the fingerprint acquisition apparatus includes: the system comprises an auxiliary fingerprint acquisition device and a main fingerprint acquisition device, wherein the imaging speed of the main fingerprint acquisition device is lower than that of the auxiliary fingerprint acquisition device;
the said fingerprint collection device is right the fingerprint collection area carries on image acquisition, obtains at least one fingerprint collection area image, including:
acquiring images of the fingerprint acquisition area through the auxiliary fingerprint acquisition device to obtain at least one fingerprint acquisition area image;
the determining the fingerprint acquisition control parameter of the fingerprint acquisition device for acquiring the fingerprint according to the positioning parameter comprises:
determining fingerprint acquisition control parameters of the fingerprint acquired by the main fingerprint acquisition device according to the positioning parameters;
the controlling the image acquisition device to acquire images based on the image acquisition control parameters comprises:
and controlling the main fingerprint acquisition device to acquire images based on the image acquisition control parameters.
Preferably, the positioning parameters include: the fingerprint range area and/or the fingerprint center position of the fingerprint to be acquired;
the fingerprint acquisition control parameters comprise a focal point and/or a focal length for acquiring the fingerprint.
Preferably, if the touch operation is in the capture area corresponding to the image capture device, determining the image capture control parameters of the image capture device in response to the touch operation includes:
and if the touch operation is in an image acquisition area corresponding to the image acquisition device, determining image acquisition control parameters of the image acquisition device based on the touch parameters of the touch operation.
Preferably, before the determining, if the touch operation is in an image capturing area corresponding to an image capturing device, an image capturing control parameter of the image capturing device in response to the touch operation, the method further includes:
acquiring images of the acquisition area through the image acquisition device, and displaying the images acquired by the image acquisition device;
the determining of the image acquisition control parameter of the image acquisition device based on the touch parameter of the touch operation comprises:
and determining the image acquisition control parameters required to be adjusted by the image acquisition device based on the touch parameters of the touch operation.
In another aspect, the present application further provides an image capturing apparatus, including:
the touch sensing unit is used for obtaining touch operation on the display screen;
the parameter determining unit is used for responding to the touch operation and determining image acquisition control parameters of the image acquisition device if the touch operation is in an acquisition area corresponding to the image acquisition device, wherein the image acquisition device is positioned below the display screen, and the acquisition area is partially or completely overlapped with a display area of the display screen;
and the acquisition control unit is used for controlling the image acquisition device to acquire images based on the image acquisition control parameters.
Preferably, the parameter determination unit includes:
the area acquisition unit is used for acquiring an image of the fingerprint acquisition area through the fingerprint acquisition device to obtain at least one fingerprint acquisition area image if the touch operation is in the fingerprint acquisition area corresponding to the fingerprint acquisition device;
the positioning analysis unit is used for determining the positioning parameters of the fingerprint to be acquired in the fingerprint acquisition area according to the at least one fingerprint acquisition area image;
and the first parameter determining unit is used for determining the fingerprint acquisition control parameters of the fingerprint acquired by the fingerprint acquisition device according to the positioning parameters.
Preferably, the parameter determination unit includes:
and the second parameter determining unit is used for determining the image acquisition control parameters of the image acquisition device based on the touch parameters of the touch operation if the touch operation is in the image acquisition area corresponding to the image acquisition device.
In another aspect, the present application further provides an electronic device, including:
the touch sensing device comprises a display screen, a touch sensing chip and an image acquisition device arranged below the display screen;
the touch sensing chip is used for obtaining touch operation on the display screen;
the image acquisition device is used for responding to the touch operation and determining image acquisition control parameters of the image acquisition device if the touch operation is in an acquisition area corresponding to the image acquisition device, wherein the acquisition area is partially or completely overlapped with a display area of the display screen; and controlling to acquire the image based on the image acquisition control parameter.
According to the scheme, the image acquisition device is arranged below the display screen, the acquisition area corresponding to the image acquisition device is partially or completely overlapped with the display area of the display screen, if the touch operation obtained on the display screen is located in the acquisition area corresponding to the image acquisition device, the image acquisition control parameters of the image acquisition device can be determined in response to the touch operation, and therefore the acquisition control parameters of the image acquisition device can be controlled conveniently and fast through the touch operation in the acquisition area corresponding to the image acquisition device, and the images required by the user can be acquired more accurately.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flowchart of an image acquisition method according to an embodiment of the present application;
fig. 2 shows a schematic view of an acquisition area corresponding to an image acquisition device provided in a display area of a display screen;
FIG. 3 is a schematic structural diagram of a display screen and an image capture device disposed below the display screen in an electronic device;
fig. 4 is a schematic flowchart of another image capturing method according to an embodiment of the present disclosure;
fig. 5 is a schematic flowchart of another image capturing method according to an embodiment of the present disclosure;
fig. 6 is a schematic flowchart of another image capturing method according to an embodiment of the present disclosure;
fig. 7 is a schematic flowchart of another image capturing method according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of an image capturing device according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be practiced otherwise than as specifically illustrated.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present disclosure.
Referring to fig. 1, fig. 1 is a schematic flow chart of an image acquisition method according to an embodiment of the present disclosure, where the method according to the embodiment may include:
s101, touch operation on the display screen is obtained.
The display screen is a touch screen, so that touch operation on the display screen can be sensed through a touch sensing chip of the electronic equipment.
S102, if the touch operation is in the corresponding acquisition area of the image acquisition device, determining the image acquisition control parameters of the image acquisition device in response to the touch operation.
The image acquisition device is positioned below the display screen, and the acquisition area of the image acquisition device is partially or completely overlapped with the display area of the display screen. Correspondingly, the image acquisition device can acquire images through the acquisition area on the display screen.
For ease of understanding, reference may be made to fig. 2 and 3.
Fig. 2 is a schematic structural diagram illustrating a display area of a display screen of an electronic device and an acquisition area corresponding to the image acquisition device. As can be seen from fig. 2, the display area 200 of the display screen includes the acquisition area 201, and in fig. 2, the acquisition area 201 overlaps with a part of the display area 200 of the display screen as an example.
As can be seen from fig. 2, since the capture area is actually a part of the touch screen, if there is a touch operation in the capture area, the touch operation can be sensed on the touch screen, so that based on the touch position of the touch operation and the area range of the capture area in the display area of the touch screen, it can be analyzed whether the touch operation is within the capture area.
Wherein the image capture device may be located below the capture area in the display screen. Fig. 3 is a schematic structural diagram illustrating a display screen and an image capturing device in an electronic device according to the present application.
As can be seen from fig. 3, an image capture device 302 is disposed below a capture area 301 of the display screen 300. The image acquisition device is located between the display screen and the rear shell cover of the electronic device and is located in the area below the acquisition area 302 of the display screen.
The capture area can be regarded as a window area where the image capture unit captures an image through the touch screen. In order to enable the acquisition area in the display screen to be used as a display area to display content and also be used as a window for an image acquisition device to acquire images, the acquisition area has the characteristics of low reflection and high light transmittance. Correspondingly, when the image acquisition device needs to take an image, the acquisition area can be changed into a transparent area, such as transparent glass; and under the state that the image acquisition device does not acquire the image, the acquisition area can normally display the screen content.
It can be understood that, in consideration of the operation habit of the user, if a touch operation is detected in the capture area of the touch screen, the touch operation is a control operation for the image capture device, and therefore, in order to improve the convenience of controlling the image capture device to capture an image, the application may determine an image capture control parameter for controlling the image capture device to capture an image in response to the touch operation.
The image capture control parameter may be a relevant parameter according to which the image capture device is controlled to capture an image, for example, the image capture control parameter may include a focal length, a focal point, and/or a range area of the captured image.
It will be appreciated that the image capture device of the present application may be used in a variety of situations, such as, in one possible scenario, a fingerprint capture device for capturing a fingerprint image.
In yet another possible case, the image capturing device may also be an image capturing device that captures images of other objects, which may be objects of a scene, a person, or the like. In this case, the image acquired by the image acquisition device and the image acquired by the front camera or the rear camera of the current electronic equipment such as the mobile phone belong to the same type of image.
And S103, controlling the image acquisition device to acquire images based on the image acquisition control parameters.
For example, the parameter according to which the image acquisition device acquires the image is set or adjusted to the determined image acquisition control parameter.
For example, if the image capture control parameter includes a focal length, the focal length of the image capture unit may be set to the focal length determined in step S102, and then an image may be captured based on the set focal length.
It is thus clear that this application is provided with image acquisition device in the below of display screen, and the collection region that this image acquisition device corresponds overlaps with the display area part of display screen or whole, if the touch operation that obtains on the display screen is in the collection region that this image acquisition device corresponds, alright confirm this image acquisition device's image acquisition control parameter with responding to this touch operation to through the touch operation in the collection region that this image acquisition device corresponds, alright the collection control parameter of this image acquisition device collection image with comparatively convenient control, with accurate collection user required image.
The scheme of the application is introduced below in combination with different situations of the image acquisition device arranged below the display screen.
First, a case where an image capturing device is used as a fingerprint capturing device will be described.
In this embodiment of the application, if the touch operation is in the fingerprint acquisition area corresponding to the fingerprint acquisition device, the fingerprint acquisition control parameter of the fingerprint image acquired by the fingerprint acquisition device can be determined according to the touch operation. For example, according to the touch coordinates and/or the touch range area of the touch operation, fingerprint acquisition control parameters such as a focal point and a focal length required for acquiring a fingerprint image are determined. Like this, the user only needs to carry out touch operation in fingerprint collection area of fingerprint collection device, alright in order to realize automatic trigger confirm the fingerprint collection control parameter that fingerprint collection device gathered the fingerprint image and is based on the fingerprint collection control parameter reasonable collection that is used for discerning the fingerprint.
However, the sizes of the fingerprints of different users are differentiated, and when the user touches the fingerprint collection area in the display screen through touch operation, the sizes of the positions where the user's fingers touch the display screen may be different due to different pressing pressures, so that the fingerprints of the user's fingers may not be completely attached to the display screen. In this case, if the center position and/or the fingerprint range area of the fingerprint cannot be accurately reflected according to the touch parameter of the touch operation, and thus, determining the fingerprint capture image control parameter according to the touch operation may result in a fingerprint image that cannot be completely captured, or may result in unsatisfactory fingerprint capture definition due to inaccurate focus positioning.
In order to accurately determine the actual position area of the fingerprint, other modes for determining the fingerprint acquisition control parameters can be provided in response to the touch operation. Referring to fig. 4, which shows a schematic flow chart of another embodiment of the image capturing method of the present application, the method of the present embodiment may include:
s401, touch operation on the display screen is obtained.
S402, if the touch operation is in a fingerprint acquisition area corresponding to the fingerprint acquisition device, image acquisition is carried out on the fingerprint acquisition area through the fingerprint acquisition device, and at least one fingerprint acquisition area image is obtained.
The fingerprint acquisition area is partially or completely overlapped with the display screen, so that the fingerprint acquisition area can be used as a part of the display screen to display the display content output by the electronic equipment; and can be used as a collecting window of a fingerprint collecting device for collecting images (or can be regarded as a fingerprint collecting lens).
It can be understood that, if a touch operation is acquired in the fingerprint acquisition area, it indicates that the user inputs a fingerprint to the electronic device, and the fingerprint of the user needs to be identified. For example, when the user needs to unlock the screen or verify an application, the user may perform a touch operation on the fingerprint acquisition area to trigger the electronic device to acquire and identify a fingerprint.
In step S402, the image collected by the fingerprint collection device is not the image that is collected only in the touch area where the touch operation is located, but is collected in the fingerprint collection area, so that the collected image can comprehensively cover the fingerprint collection area, and the whole area of the fingerprint corresponding to the touch operation can be analyzed more reasonably later, thereby avoiding the situation that the fingerprint collection is not comprehensive or the image collection effect is poor.
For the convenience of distinguishing, an image obtained by the fingerprint acquisition device acquiring an image of the whole fingerprint acquisition area is called a fingerprint acquisition area image.
It can be understood that the fingerprint acquisition device for acquiring the image of the image acquisition area can be the same as or different from the fingerprint acquisition device for acquiring the fingerprint, and can be specifically set as required.
For example, in a possible case, only one fingerprint acquisition device may be disposed below the display screen, so that the fingerprint acquisition device may be used to acquire an image of the whole fingerprint acquisition area, and then the fingerprint acquisition device is used to acquire the fingerprint area.
As another example, in yet another possible scenario, the fingerprint acquisition device may actually consist of a main fingerprint acquisition device and an auxiliary fingerprint acquisition device, wherein the imaging speed of the auxiliary fingerprint acquisition device is faster than the imaging speed of the main fingerprint acquisition device. Of course, in order to ensure the accuracy of fingerprint identification, the quality of the image collected by the main fingerprint collection device is higher than that of the image collected by the auxiliary fingerprint collection device, and the quality of the image collected by the auxiliary fingerprint collection device may be relatively poor because the integrity of the image of the fingerprint collection region is concerned by the fingerprint collection image region rather than the image quality such as image definition. For example, the image definition of the image collected by the main fingerprint collection device is higher than that of the image collected by the auxiliary fingerprint image.
It can be understood that, for the subsequent positioning information corresponding to the fingerprint to be collected can be more accurately determined, a plurality of fingerprint collection area images can be collected through the fingerprint collection device. For example, the fingerprint collection area may be subjected to multiple image collections by the fingerprint collection device, so as to obtain multiple images of the fingerprint collection area. The electronic device can also be provided with a plurality of fingerprint acquisition devices to acquire a plurality of fingerprint acquisition region images through the plurality of fingerprint acquisition devices, for example, a plurality of auxiliary fingerprint acquisition devices can be arranged to acquire a plurality of fingerprint acquisition region images through the plurality of auxiliary fingerprint acquisition devices.
The fingerprint collection device that this embodiment mentioned can be any type's fingerprint sensor, for example, can be for periscopic camera module or wide angle type camera module etc.. The periscopic camera in the periscopic camera module can realize high-power optical zooming by adjusting the lens interval in the lens group in the lens; furthermore, the angle of the prism can be adjusted so that the fingerprint of the operation body of the touch operation can be acquired through the periscopic camera corresponding to the touch operation at different positions in the acquisition area.
S403, determining the positioning parameters of the fingerprint to be acquired in the fingerprint acquisition area according to the at least one fingerprint acquisition area image.
The fingerprint to be acquired in the fingerprint acquisition area is actually the fingerprint of the touch finger generating the touch operation.
The positioning parameter of the fingerprint to be acquired is a parameter for determining that the fingerprint to be acquired is located in a specific position area of the fingerprint acquisition area. For example, the positioning parameters may include: the center coordinate position of the fingerprint to be acquired, and one or more of parameter information such as the fingerprint range area of the fingerprint to be acquired.
It can be understood that, because the fingerprint collection area image is obtained by collecting the image of the complete area of the fingerprint collection area, the fingerprint image of the touch finger in the touch operation can be more completely reflected through the fingerprint collection area image, and the incomplete fingerprint image collection can be favorably reduced. Therefore, the positioning parameters required for collecting the fingerprint of the touch finger can be analyzed more accurately based on the more complete fingerprint image of the touch finger, so that the fingerprint image for fingerprint identification can be collected more accurately and with high quality in the following process.
S404, determining the fingerprint collection control parameter of the fingerprint collection device for collecting the fingerprint according to the positioning parameter.
It can be understood that the positioning parameter is a parameter characterizing a specific location area of the fingerprint to be captured, and therefore, according to the positioning parameter, a fingerprint capture control parameter of the fingerprint image capture device, which needs to be set for clearly and completely capturing the image of the fingerprint to be captured, can be analyzed.
The fingerprint collection control parameters are some control parameters required for controlling the fingerprint collection device to collect the image required for collecting the fingerprint to be collected, for example, the fingerprint collection control parameters may include: focal point and/or focal length.
For example, in the case where the positioning parameter includes the center coordinate position of the fingerprint to be captured, in order to clearly capture the fingerprint, the focus required to capture the fingerprint may be determined based on the center coordinate position of the fingerprint.
For another example, in the case that the positioning parameter includes a fingerprint range area of the fingerprint to be acquired, the focal length required for acquiring the fingerprint is determined, so as to ensure that the acquisition of the image of the fingerprint can be completed.
S405, controlling the fingerprint acquisition device to acquire a fingerprint image based on the fingerprint acquisition control parameter.
For example, the parameters of the fingerprint acquisition device may be set to the determined fingerprint acquisition control parameters.
Optionally, under the condition that the fingerprint acquisition device comprises a main fingerprint acquisition device and an auxiliary fingerprint acquisition device, the main fingerprint acquisition device can be controlled to acquire images based on the image acquisition control parameters.
It is obvious, in this embodiment, consider that the finger fingerprints of different users are different in size and different in touch pressing pressure, which may result in a situation that the fingerprints may not be completely attached to the touch screen, for example, in a situation that the finger fingerprints of the user are not completely attached to the display screen, if the center position of the fingerprint is determined according to the touch operation, the center position of the fingerprint is actually not the actual center of the finger fingerprint, and thus, the focus is adjusted based on the determined center position, so that focusing is mistaken, and the definition of the collected fingerprint is affected. For another example, because the size of the fingerprint area cannot be accurately reflected by the touch operation, if the size of the fingerprint area is determined according to the touch operation, a situation that a part of fingerprints cannot be collected may occur when the fingerprint image is collected according to the determined size of the fingerprint area; if the fingerprint collection area is enlarged, the definition of the fingerprint image can be ensured most effectively due to the overlarge range of the fingerprint collection area.
In order to solve the above problem, this embodiment is not direct according to touch operation and confirms fingerprint collection control parameter, but can carry out image acquisition to the fingerprint collection region, in order to acquire the complete fingerprint collection regional image that contains this fingerprint collection region, make the fingerprint collection regional image of gathering can contain out the complete image that is in this regional fingerprint, therefore, combine this fingerprint collection regional image can be more for the actual location parameter of accurate definite fingerprint in this fingerprint collection region, thereby combine this location parameter can more accurately analyze out the required fingerprint collection control parameter of accurate this fingerprint of gathering, and then be favorable to guaranteeing when clearly gathering the fingerprint, the integrality of the fingerprint of gathering has also been guaranteed, reduce the unable complete condition of gathering of fingerprint.
In order to facilitate understanding of the solution of the embodiment of fig. 4, the fingerprint acquisition device including a main fingerprint acquisition device and at least one auxiliary fingerprint acquisition device is described below in conjunction with an application scenario. Fig. 5 is a schematic flow chart illustrating a further embodiment of an image capturing method according to the present application.
The embodiment may include:
s501, touch operation on the display screen is obtained.
S502, if the touch operation is in a fingerprint acquisition area corresponding to the fingerprint acquisition device, image acquisition is carried out on the fingerprint acquisition area through an auxiliary fingerprint acquisition device in the fingerprint acquisition device, and at least one fingerprint acquisition area image is obtained.
The fingerprint acquisition area overlaps with part or all of the display screen.
Wherein, this fingerprint collection device includes main fingerprint collection device and at least one supplementary fingerprint collection device.
In this embodiment, if the fingerprint acquisition device comprises an auxiliary fingerprint acquisition device, the auxiliary fingerprint acquisition device can acquire images of the fingerprint acquisition area once or for multiple times, so as to obtain at least one image of the fingerprint acquisition area. If the fingerprint acquisition device comprises a plurality of auxiliary fingerprint acquisition devices, the plurality of auxiliary fingerprint acquisition devices can be utilized to simultaneously acquire images of the fingerprint acquisition area, so that a plurality of images of the fingerprint acquisition area are obtained.
The collection efficiency of collecting the fingerprint collection area images can be guaranteed through the auxiliary fingerprint collection device, and the collected fingerprint collection area images can comprehensively reflect the content of the fingerprint collection area.
S503, according to the at least one fingerprint acquisition area image, determining the central position and the fingerprint range area of the fingerprint to be acquired in the fingerprint acquisition area.
If the finger of the user touches the fingerprint collection area of the display screen, the collected image of the fingerprint collection area may include a complete image of the finger of the user in the fingerprint collection area. Therefore, the central position of the fingerprint contained in the fingerprint acquisition area image is the central position of the fingerprint to be acquired, correspondingly, the fingerprint coverage area contained in the fingerprint acquisition area image is the fingerprint range area corresponding to the fingerprint to be acquired, so that the actual central position and the fingerprint range area of the fingerprint in the fingerprint acquisition area can be accurately positioned, and a basis is provided for the subsequent accurate acquisition of the fingerprint.
S504, according to the center position and the fingerprint range area of the fingerprint to be acquired, determining the focus and the focal length of the fingerprint acquired by the fingerprint acquisition device.
Under the condition that the central position of the fingerprint to be acquired and the fingerprint range area are determined, the focus and the focal distance which are required to be set for clearly and completely acquiring the fingerprint can be definitely ensured.
The focus and the focal length required by the fingerprint acquisition device for acquiring the fingerprint are determined according to the central position and the fingerprint range area of the fingerprint to be acquired, which can be respectively determined according to the corresponding relationship between the central position and the focus and the corresponding relationship between the fingerprint range area and the focal length, or can be other modes of determining the focus and the focal length, and the application is not limited thereto.
It is to be understood that, for convenience of understanding, the present application takes as an example that the positioning parameter of the fingerprint to be captured includes the center position and the fingerprint range area, and in practical applications, the case that the positioning parameter may include any one of the center position and the fingerprint range area of the fingerprint is also applicable to the present embodiment. Accordingly, the fingerprint acquisition control parameter may also be one of a focal length and a focal point.
And S505, controlling the main fingerprint acquisition device to acquire the fingerprint image according to the determined focal point and focal length.
Optionally, in the embodiments of fig. 4 and 5, after the fingerprint image is collected by the fingerprint collection device or the main fingerprint collection device, the processor of the electronic device may further obtain the collected fingerprint image, and perform fingerprint identification and analysis on the fingerprint image.
The following description will take an image capturing device as a conventional image capturing device, that is, an image capturing device (e.g., a camera for capturing images) for capturing images of other objects besides fingerprints as an example.
For example, referring to fig. 6, which shows a schematic flow chart of another embodiment of the image capturing method of the present application, the method of the present embodiment may include:
s601, touch operation on the display screen is obtained.
This step is similar to the previous embodiment and will not be described again.
S602, if the touch operation is in the image acquisition area corresponding to the image acquisition device, determining the image acquisition control parameters of the image acquisition device based on the touch parameters of the touch operation.
The image acquisition device is arranged below the display screen, and an image acquisition area corresponding to the image acquisition device is partially or completely overlapped with the display screen.
Correspondingly, the image acquisition device can acquire images through the image acquisition area in the display screen. This image acquisition device can be for arbitrary suitable setting in the display screen below, and possess the camera device under the screen of adjustment image acquisition control parameter, for example, periscope formula camera module or wide angle camera module etc.. The periscopic camera can realize high-power optical zooming by adjusting the lens interval in the lens group in the lens; furthermore, the angle of the prism can be adjusted so as to correspond to touch operation at different positions in the acquisition area and acquire fingerprints of an operation body of the touch operation or images of other objects in the image acquisition area through the periscopic camera. Of course, a wide-angle camera is also possible so that a larger area of the acquisition area is possible.
The image acquisition control parameters are related parameters required for controlling the image acquisition device to acquire images, and the parameters can influence the content effect of the images acquired by the image acquisition device, such as the spatial angle range of image acquisition and/or the central point of the acquired images. Optionally, the image acquisition control parameters may include, for example, a focal point, and/or a focal length.
In this embodiment, if the touch operation is in the image capturing area corresponding to the image capturing device, the touch operation may be an operation for adjusting or setting an image capturing control parameter corresponding to the image capturing device, and accordingly, the touch parameter through the touch operation may be used to determine the image capturing control parameter.
The touch parameters of the touch operation may include: a touch position point of the touch operation, an operation type of the touch operation, and/or a trajectory parameter of the touch operation, etc.
There are many possible ways of determining the image acquisition control parameters based on the touch parameters.
For example, in one possible case, the correspondence between different types of touch operations and different types of image capture control parameters may be set, so that, according to the touch parameters of the touch operations, the operation type of the touch operations may be determined, and then the image capture control parameters matching the operation type of the touch operations may be determined. Correspondingly, the specific value set for the image acquisition control parameter can be determined according to the touch parameter of the touch operation.
For example, the image capturing device may adjust the focus and the focal length of the captured image as needed, and the touch operation input by the user to adjust the focus and the focal length may be different.
When the focus is adjusted, the user can perform touch click operation at the position where focusing is needed in the image acquisition area. Therefore, if the operation type of the touch operation is identified as a touch click operation according to the touch operation of the touch operation, it may be determined that the image capture control parameter that needs to be currently adjusted is a focus, that is, the current touch operation is an operation of controlling and adjusting the focus. In this case, the click coordinate position of the touch click operation may be determined as a coordinate position corresponding to a focus that needs to be set by the image capture device.
When the focal length of image acquisition needs to be adjusted, the touch operation input in the image acquisition area may be a touch and slide operation of two fingers, so that according to the number of touch points of the touch operation, the touch starting point and the touch ending point (or touch tracks, etc.) of each touch point, it may be determined that the operation type of the touch operation is the touch and slide operation of two fingers, and the image acquisition control parameter that needs to be adjusted by the touch and slide operation is the focal length.
Correspondingly, the reduction or increase of the focal length can be determined according to the increase or reduction of the distance between the two fingers in the touch sliding operation and the mutual distance or reduction range between the two fingers.
It should be noted that, the above example is taken as an example that only one image acquisition control parameter is controlled by each operation type of touch operation, but it is understood that in practical applications, a plurality of image acquisition control parameters may be controlled simultaneously by one type of touch operation, and the same is also applied to this embodiment for this case.
For example, when the user is required to adjust the focus and the focal length, a touch slide of two fingers may be performed at a desired set focus position, if the start points of the touch slides of the two fingers are adjacent, the start point may be used as the focus position, and according to the distance of the touch slide, the focus reduction amplitude and the final focal length value may be determined. Accordingly, if the two fingers slide toward each other, the coordinate position point of the focal point to be adjusted may be determined according to the final position points of the two fingers, and the distance at which the two fingers slide close to each other may be used to determine the magnitude of the increase in the focal length.
In yet another possible implementation manner, if the type of the image capturing control parameter adjustable by the touch operation in the image capturing area is fixed, the image capturing control parameter required by the image capturing device to capture the image may also be determined according to a mapping relationship between the touch operation of the touch operation and the adjustment or setting value of the image capturing control parameter, and in combination with the touch parameter of the touch operation.
Because the image acquisition area is a part of the display screen, the touch position coordinates involved in the touch operation in the image acquisition area can be determined based on each coordinate position point in the display screen.
Optionally, in order to avoid the misoperation, after the touch operation is detected in the image capture area, the image capture control parameter is determined based on the touch parameter of the touch operation only if the touch operation belongs to the set type of touch operation. Accordingly, if the touch operation within the image capturing area does not belong to the set type, the touch operation may not be responded. For example, if the touch operation by the user is a press operation, which is not a touch operation of a set type that controls the image capturing control parameter, the image capturing control parameter that captures the image by the image capturing apparatus can be maintained unchanged.
And S603, controlling the image acquisition device to acquire images based on the image acquisition control parameters.
For example, the parameters of the image acquisition device may be set as the determined image acquisition control parameters.
For another example, if the image capturing device is already in the image capturing device, the image capturing parameters of the image capturing device may be adjusted to the image capturing control parameters determined in step S602.
It is understood that after the image acquisition control parameters acquire the image, the image acquired by the image acquisition device can be displayed in the display screen.
It can be seen that, in this embodiment, under the condition that the image acquisition device is disposed below the display screen, if a touch operation is detected in an image acquisition area corresponding to the image acquisition device in the display screen, the image acquisition control parameters of the image acquired by the image acquisition device are determined based on the touch parameters of the touch operation, so that the image acquisition device can be controlled to acquire images according to the image acquisition control parameters, and a user can reasonably control the image acquisition of the image acquisition device through the touch operation in the image acquisition area of the display screen, so as to acquire images meeting user requirements, thereby improving convenience and flexibility in adjusting image acquisition, and facilitating the image acquisition device to acquire images required by the user more accurately.
It can be understood that, in order to avoid misidentifying the operation of the user as the touch operation of the image capturing control parameter for controlling the image capturing device, the application may also respond to the touch operation in the image capturing area when the image capturing device is in the activated state.
Referring to fig. 7, which shows a schematic flow chart of another embodiment of the image capturing method of the present application, the method of the present embodiment may include:
and S701, carrying out image acquisition on the acquisition area through an image acquisition device, and displaying the image acquired by the image acquisition device.
The image acquisition device is arranged below a display screen of the electronic equipment.
The image acquisition device can always acquire images after the image acquisition device is started, and the image acquisition device can acquire images according to set (for example, after the image acquisition device is adjusted by a user or default) image acquisition control parameters under the condition that the user does not adjust the image acquisition control parameters of the images acquired by the image acquisition device.
S702, touch operation on the display screen is obtained.
The sequence of step S701 and step S702 may be interchanged, or may be executed simultaneously, which is not limited in this application.
And S703, if the touch operation is in the image acquisition area corresponding to the image acquisition device, determining the image acquisition control parameter to which the image acquisition device needs to be adjusted based on the touch parameter of the touch operation.
The image acquisition area corresponding to the image acquisition device is partially or completely overlapped with the display screen.
It can be understood that, before the touch operation is detected in the image capturing area, the image capturing device performs image capturing according to certain image capturing control parameters, and once the touch operation is detected, it indicates that the image capturing control parameters of the image capturing device need to be adjusted, so that the embodiment needs to determine the image capturing control parameters that the image capturing device needs to be adjusted to based on the touch parameters of the touch operation. For example, the parameters such as the focal point and/or the focal length of the image acquisition device need to be adjusted to specific values.
For determining the image acquisition control parameter to be adjusted based on the touch parameter of the touch operation, reference may be made to the related description of the foregoing embodiment, which is not described herein again.
It can be understood that, since the image capturing device is always in the image capturing state, when the touch operation is in the image capturing area, the image capturing device captures an image of the touch operation. In this case, the image capturing device may continuously update the captured image to the display screen for display, and thus, the image including the touch operation is displayed on the display screen.
Of course, considering that the touch operation is only to adjust the image capturing control parameter of the image capturing device, and the user still wants to see the contrast image before and after the image capturing control parameter is adjusted, in this application, if the touch operation is in the image capturing area, the image capturing device may output the image before the touch operation is detected to the display screen, and maintain the display screen to display the image.
It is to be understood that, similarly to the foregoing embodiment, if the touch operation of the image capturing area is not of the set type of touch operation in the case where the touch operation of setting the adjustment image capturing control parameter is of the set type of touch operation, the display of the presented image in the display screen before the touch operation is detected may be maintained.
And S704, controlling the image acquisition device to acquire images according to the determined image acquisition control parameters, and displaying the acquired images in a display screen.
In step S704, the image displayed on the display screen is the image acquired by the image acquisition device after the image acquisition control parameter is adjusted, and the user can compare whether the acquired image effect meets the self requirement through the images displayed on the display screen before and after the touch operation, and if the acquired image effect does not meet the self requirement, the user still needs to input the touch operation based on the image acquisition area to continue adjusting the image acquisition control parameter.
The application also provides an image acquisition device corresponding to the image acquisition method.
As shown in fig. 8, which shows a schematic structural diagram of an embodiment of an image capturing apparatus according to the present application, the apparatus may include:
a touch sensing unit 801 for obtaining a touch operation on a display screen;
a parameter determining unit 802, configured to determine, in response to the touch operation, an image acquisition control parameter of an image acquisition device if the touch operation is in an acquisition area corresponding to the image acquisition device, where the image acquisition device is located below the display screen, and the acquisition area is partially or completely overlapped with a display area of the display screen;
an acquisition control unit 803, configured to control the image acquisition device to acquire an image based on the image acquisition control parameter.
In one possible implementation manner, the parameter determining unit includes:
the area acquisition unit is used for acquiring an image of the fingerprint acquisition area through the fingerprint acquisition device to obtain at least one fingerprint acquisition area image if the touch operation is in the fingerprint acquisition area corresponding to the fingerprint acquisition device;
the positioning analysis unit is used for determining the positioning parameters of the fingerprint to be acquired in the fingerprint acquisition area according to the at least one fingerprint acquisition area image;
and the first parameter determining unit is used for determining the fingerprint acquisition control parameters of the fingerprint acquired by the fingerprint acquisition device according to the positioning parameters.
Optionally, the fingerprint acquisition device includes: the system comprises an auxiliary fingerprint acquisition device and a main fingerprint acquisition device, wherein the imaging speed of the main fingerprint acquisition device is lower than that of the auxiliary fingerprint acquisition device;
the area acquisition unit is specifically used for acquiring images of the fingerprint acquisition area through the auxiliary fingerprint acquisition device to obtain at least one fingerprint acquisition area image;
the positioning analysis unit is specifically used for determining fingerprint acquisition control parameters of the fingerprint acquired by the main fingerprint acquisition device according to the positioning parameters;
the acquisition control unit comprises:
and the main acquisition control unit is used for controlling the main fingerprint acquisition device to acquire images based on the image acquisition control parameters.
Optionally, the positioning parameters include: the fingerprint range area and/or the fingerprint center position of the fingerprint to be acquired;
the fingerprint acquisition control parameters comprise a focal point and/or a focal length for acquiring the fingerprint.
In another possible implementation manner, the parameter determining unit includes:
and the second parameter determining unit is used for determining the image acquisition control parameters of the image acquisition device based on the touch parameters of the touch operation if the touch operation is in the image acquisition area corresponding to the image acquisition device.
Optionally, the apparatus may further include:
the image display unit is used for acquiring images of the acquisition area through the image acquisition device and displaying the images acquired by the image acquisition device before the touch operation is in the image acquisition area corresponding to the image acquisition device;
the second parameter determining unit is specifically configured to determine, based on the touch parameter of the touch operation, an image acquisition control parameter to which the image acquisition device needs to be adjusted if the touch operation is in an image acquisition area corresponding to the image acquisition device.
In another aspect, the present application further provides an electronic device.
Fig. 9 is a schematic diagram illustrating a component structure of an electronic device according to the present application.
As shown in fig. 9, the electronic apparatus includes: the display screen 901, a touch sensing chip 902 connected with the display screen and an image acquisition device 903 arranged below the display screen;
the touch sensing chip 902 is used for obtaining touch operation on the display screen;
the image acquisition device 903 is configured to determine an image acquisition control parameter of the image acquisition device in response to the touch operation if the touch operation is in an acquisition area corresponding to the image acquisition device, where the acquisition area is partially or completely overlapped with a display area of the display screen; and controlling to acquire the image based on the image acquisition control parameter.
For example, the image capturing device may be an image capturing module including a photosensitive panel and a control circuit required for image capturing. For example, the image acquisition device may be a fingerprint sensor, or a camera control module, etc.
The specific operation of the image capturing device can be referred to the related description in the foregoing method embodiments, and is not described herein again.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. An image acquisition method comprising:
obtaining touch operation on a display screen;
if the touch operation is in an acquisition area corresponding to an image acquisition device, determining image acquisition control parameters of the image acquisition device in response to the touch operation, wherein the image acquisition device is positioned below the display screen, and the acquisition area is partially or completely overlapped with a display area of the display screen; the image acquisition device is a fingerprint acquisition device, and the acquisition area is a fingerprint acquisition area corresponding to the fingerprint acquisition device;
controlling the image acquisition device to acquire images based on the image acquisition control parameters;
wherein, if the touch operation is in the acquisition area corresponding to the image acquisition device, responding to the touch operation to determine the image acquisition control parameters of the image acquisition device, the method comprises the following steps:
if the touch operation is in a fingerprint acquisition area corresponding to a fingerprint acquisition device, acquiring an image of the fingerprint acquisition area through the fingerprint acquisition device to obtain at least one fingerprint acquisition area image;
determining a positioning parameter of a fingerprint to be acquired in the fingerprint acquisition area according to the at least one fingerprint acquisition area image;
and determining fingerprint acquisition control parameters of the fingerprint acquisition device for acquiring the fingerprint according to the positioning parameters.
2. The method of claim 1, the fingerprint acquisition device comprising: the system comprises an auxiliary fingerprint acquisition device and a main fingerprint acquisition device, wherein the imaging speed of the main fingerprint acquisition device is lower than that of the auxiliary fingerprint acquisition device;
the said fingerprint collection device is right the fingerprint collection area carries on image acquisition, obtains at least one fingerprint collection area image, including:
acquiring images of the fingerprint acquisition area through the auxiliary fingerprint acquisition device to obtain at least one fingerprint acquisition area image;
the determining the fingerprint acquisition control parameter of the fingerprint acquisition device for acquiring the fingerprint according to the positioning parameter comprises:
determining fingerprint acquisition control parameters of the fingerprint acquired by the main fingerprint acquisition device according to the positioning parameters;
the controlling the image acquisition device to acquire images based on the image acquisition control parameters comprises:
and controlling the main fingerprint acquisition device to acquire images based on the image acquisition control parameters.
3. The method of claim 1, the positioning parameters comprising: the fingerprint range area and/or the fingerprint center position of the fingerprint to be acquired;
the fingerprint acquisition control parameters comprise a focal point and/or a focal length for acquiring the fingerprint.
4. The method of claim 1, wherein determining image capture control parameters of the image capture device in response to the touch operation if the touch operation is in a capture area corresponding to the image capture device comprises:
and if the touch operation is in an image acquisition area corresponding to the image acquisition device, determining image acquisition control parameters of the image acquisition device based on the touch parameters of the touch operation.
5. The method of claim 4, further comprising, before determining an image capture control parameter of the image capture device in response to the touch operation if the touch operation is in an image capture area corresponding to the image capture device:
acquiring images of the acquisition area through the image acquisition device, and displaying the images acquired by the image acquisition device;
the determining of the image acquisition control parameter of the image acquisition device based on the touch parameter of the touch operation comprises:
and determining the image acquisition control parameters required to be adjusted by the image acquisition device based on the touch parameters of the touch operation.
6. An image acquisition apparatus comprising:
the touch sensing unit is used for obtaining touch operation on the display screen;
the parameter determining unit is used for responding to the touch operation and determining image acquisition control parameters of the image acquisition device if the touch operation is in an acquisition area corresponding to the image acquisition device, wherein the image acquisition device is positioned below the display screen, and the acquisition area is partially or completely overlapped with a display area of the display screen;
the acquisition control unit is used for controlling the image acquisition device to acquire images based on the image acquisition control parameters;
wherein, the parameter determination unit includes:
the area acquisition unit is used for acquiring an image of the fingerprint acquisition area through the fingerprint acquisition device to obtain at least one fingerprint acquisition area image if the touch operation is in the fingerprint acquisition area corresponding to the fingerprint acquisition device;
the positioning analysis unit is used for determining the positioning parameters of the fingerprint to be acquired in the fingerprint acquisition area according to the at least one fingerprint acquisition area image;
and the first parameter determining unit is used for determining the fingerprint acquisition control parameters of the fingerprint acquired by the fingerprint acquisition device according to the positioning parameters.
7. The apparatus of claim 6, the parameter determination unit, comprising:
and the second parameter determining unit is used for determining the image acquisition control parameters of the image acquisition device based on the touch parameters of the touch operation if the touch operation is in the image acquisition area corresponding to the image acquisition device.
8. An electronic device, comprising:
the touch sensing device comprises a display screen, a touch sensing chip and an image acquisition device arranged below the display screen;
the touch sensing chip is used for obtaining touch operation on the display screen;
the image acquisition device is used for responding to the touch operation and determining image acquisition control parameters of the image acquisition device if the touch operation is in an acquisition area corresponding to the image acquisition device, wherein the acquisition area is partially or completely overlapped with a display area of the display screen; the image acquisition device is a fingerprint acquisition device, and the acquisition area is a fingerprint acquisition area corresponding to the fingerprint acquisition device; controlling to acquire an image based on the image acquisition control parameter;
wherein, if the touch operation is in the acquisition area corresponding to the image acquisition device, responding to the touch operation to determine the image acquisition control parameters of the image acquisition device, the method comprises the following steps: if the touch operation is in a fingerprint acquisition area corresponding to a fingerprint acquisition device, acquiring an image of the fingerprint acquisition area through the fingerprint acquisition device to obtain at least one fingerprint acquisition area image; determining a positioning parameter of a fingerprint to be acquired in the fingerprint acquisition area according to the at least one fingerprint acquisition area image; and determining fingerprint acquisition control parameters of the fingerprint acquisition device for acquiring the fingerprint according to the positioning parameters.
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