CN112179508A - Ambient light frequency acquisition method and apparatus, electronic device, and storage medium - Google Patents
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
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Abstract
The disclosure relates to an ambient light frequency acquisition method and apparatus, an electronic device, and a storage medium. The method comprises the following steps: acquiring light sensation data output by a light sensor; performing Fourier transform on the light sensation data to obtain frequency domain data corresponding to the light sensation data; and acquiring the frequency of the ambient light from the frequency domain data based on the refreshing frequency of the display screen. In this embodiment, the frequency of the ambient light can be obtained by processing the photosensitive data, which is beneficial to improving the accuracy of the frequency and the subsequent experience of shooting using the frequency.
Description
Technical Field
The present disclosure relates to the field of data processing technologies, and in particular, to an ambient light frequency obtaining method and apparatus, an electronic device, and a storage medium.
Background
At present, most electronic devices are provided with cameras, so that users can shoot images conveniently at any time and any place.
However, when a user takes an image indoors or takes a display screen of other electronic devices, stripes may appear in the image, thereby affecting the shooting experience.
Disclosure of Invention
The present disclosure provides an ambient light frequency acquisition method and apparatus, an electronic device, and a storage medium to solve the deficiencies of the related art.
According to a first aspect of the embodiments of the present disclosure, there is provided an ambient light frequency obtaining method, adapted to an electronic device with a light sensor disposed under a display screen, the method including:
acquiring light sensation data output by a light sensor;
performing Fourier transform on the light sensation data to obtain frequency domain data corresponding to the light sensation data;
and acquiring the frequency of the ambient light from the frequency domain data based on the refreshing frequency of the display screen.
Optionally, the light sensation data includes sub data of at least two channels of the light sensor; obtaining a frequency of ambient light from the frequency domain data based on a refresh frequency of the display screen, comprising:
acquiring common frequencies contained in frequency domain data corresponding to at least two channel subdata, wherein the common frequencies comprise refresh frequencies of the display screen and frequencies of external ambient light;
acquiring the frequency of the ambient light based on the common frequency and the refresh frequency of the display screen.
Optionally, the electronic device further comprises a camera, and the method further comprises:
and adjusting the exposure time of the camera according to the frequency of the ambient light to obtain an image with the stroboscopic fringes eliminated.
Optionally, adjusting the exposure time of the camera according to the frequency of the ambient light includes:
calculating the period of the ambient light according to the frequency of the ambient light, and taking the period of the ambient light as a light source period;
calculating the opening time or closing time of the light source according to the light source period, and taking the opening time or closing time of the light source as the light source time;
and adjusting the exposure time of the camera according to the light source time so as to synchronize the exposure of the camera and the turning-on of the light source.
According to a second aspect of the embodiments of the present disclosure, an ambient light frequency obtaining apparatus is provided, adapted to an electronic device provided with a light sensor under a display screen, the apparatus including:
the light sensation data acquisition module is used for acquiring light sensation data output by the light sensor;
the frequency domain data acquisition module is used for carrying out Fourier transform on the light sensation data to obtain frequency domain data corresponding to the light sensation data;
and the ambient light frequency acquisition module is used for acquiring the frequency of the ambient light from the frequency domain data based on the refreshing frequency of the display screen.
Optionally, the light sensation data includes sub data of at least two channels of the light sensor; the ambient light frequency acquisition module includes:
the common frequency acquiring unit is used for acquiring common frequencies contained in frequency domain data corresponding to at least two channel subdata, wherein the common frequencies comprise the refreshing frequency of the display screen and the frequency of external ambient light;
and the ambient light frequency acquisition unit is used for acquiring the frequency of the ambient light based on the common frequency and the refreshing frequency of the display screen.
Optionally, the electronic device further comprises a camera, and the apparatus further comprises:
and the exposure time adjusting module is used for adjusting the exposure time of the camera according to the frequency of the environment light to obtain an image for eliminating the stroboscopic stripes.
Optionally, the exposure time adjusting module includes:
a light source period acquiring unit for calculating the period of the ambient light according to the frequency of the ambient light, and taking the period of the ambient light as a light source period;
the light source time acquisition unit is used for calculating the opening time or closing time of the light source according to the light source period and taking the opening time or closing time of the light source as the light source time;
and the exposure time adjusting unit is used for adjusting the exposure time of the camera according to the light source time so as to synchronize the exposure of the camera with the opening of the light source.
According to a third aspect of the embodiments of the present disclosure, there is provided an electronic apparatus including:
a processor;
a memory for storing a computer program executable by the processor;
wherein the processor is configured to execute the computer program in the memory to implement the steps of the method described above.
According to a fourth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium, in which an executable computer program is capable of implementing the steps of the method described above when executed by a processor.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
as can be seen from the above embodiments, in the embodiments of the present disclosure, the light sensing data output by the light sensor can be obtained; then, carrying out Fourier transform on the light sensation data to obtain frequency domain data corresponding to the light sensation data; then, the frequency of the ambient light is obtained from the frequency domain data based on the refresh frequency of the display screen. Therefore, the frequency of the ambient light can be obtained by processing the photosensitive data in the embodiment, and the frequency accuracy and the subsequent experience of shooting by using the frequency can be improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
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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 an ambient light frequency acquisition method according to an exemplary embodiment.
FIG. 2 is a flow chart illustrating a method of acquiring a frequency of ambient light according to an example embodiment.
Fig. 3 is a block diagram illustrating an ambient light frequency acquisition apparatus according to an example embodiment.
FIG. 4 is a block diagram illustrating an ambient light frequency acquisition module in accordance with an exemplary embodiment.
FIG. 5 is a block diagram illustrating an electronic device in accordance with an example embodiment.
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 following exemplary described embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of devices consistent with certain aspects of the present disclosure as recited in the claims below.
At present, most electronic devices are provided with cameras, so that users can shoot images conveniently at any time and any place. However, when a user takes an image indoors or takes a display screen of another electronic device, a strobe may appear in the image, thereby affecting the shooting experience.
In order to solve the above technical problem, an embodiment of the present disclosure provides an ambient light frequency obtaining method, which may be applied to an electronic device, such as a smart phone, a tablet computer, and a smart headset, in which a light sensor is disposed below a display screen, and fig. 1 is a flowchart of an ambient light frequency obtaining method according to an exemplary embodiment, and includes steps 11 to 13:
in step 11, light sensing data output by the light sensor is obtained.
In this embodiment, the light sensor can collect light according to a preset period to generate light sensation data. In practical application, the display screen has light leakage in the display process, and the light leakage can enter the light sensor. Meanwhile, external ambient light can also enter the light sensor through the display screen. Like this, light sensor can the simultaneous sensing leak light and ambient light, and generate the light sense data.
The processor of the electronic device may communicate with the light sensor to obtain the light sensation data output by the light sensor, or communicate with the memory to obtain the light data cached by the light sensor in the memory.
In this embodiment, the light sensor may include 4 channels, such as a red channel, a green channel, a blue channel, and a brightness channel, and thus the processor may obtain the light sensing data of at least one of the 4 channels. It will be appreciated that as the number of channels in the light sensing data used by the processor increases, the frequency of subsequent acquisitions is more accurate and the corresponding amount of computation increases. In the following embodiments, the light sensing data includes sub-data of at least two channels.
In step 12, fourier transform is performed on the light sensation data to obtain frequency domain data corresponding to the light sensation data.
In this embodiment, the processor may perform fourier transform, for example, discrete fourier transform, on the sub-data of each channel in the light sensing data, so as to obtain frequency domain data corresponding to the sub-data of each channel, that is, frequency domain data corresponding to the light sensing data. The fourier transform process may refer to related technologies, and is not described herein again.
In step 13, the frequency of the ambient light is obtained from the frequency domain data based on the refresh frequency of the display screen.
In this embodiment, the processor obtains the frequency of the ambient light from the frequency domain data based on the refresh frequency of the display screen. Referring to fig. 2, in step 21, the processor may obtain a common frequency included in frequency domain data corresponding to at least two channel sub-data. Since the leakage light of the display screen can enter the channels of the light sensor at the same time, the common frequency may include a refresh frequency of the display screen, such as 60 Hz. Meanwhile, the external ambient light may enter each channel of the light sensor at the same time, and the common frequency may further include a refresh frequency of the ambient light, such as above 85 Hz. It is understood that ambient light here refers to light emitted by an artificial light source external to the electronic device, such as an LED lamp, which artificial light source has a fixed refresh frequency, such as 85 Hz. In this way, the processor may acquire common frequencies in the frequency domain data including 60Hz and 85 Hz. In step 22, the processor may obtain the frequency of the ambient light by differentiating the common frequency and the refresh frequency of the display screen, for example, by removing data with the refresh frequency from the frequency domain data, and obtaining the refresh frequency of the external artificial light source.
In one embodiment, the processor may adjust the exposure time after acquiring the frequency of the ambient light. For example, the processor may acquire the light source period of the ambient light according to the frequency of the ambient light, where the reciprocal of the frequency is the light source period. Then, each light sensation data is provided with an acquisition time, and the processor can calculate the light source time according to the light source period, namely, the time when the light source is turned on or turned off is obtained. In this way, when the user triggers the shooting function, the processor may adjust the exposure time according to the light source time, for example, advance or delay the exposure time of each exposure period of the camera by a certain time, so that the exposure time of the camera and the turn-on time of the light source are kept synchronized. That is to say, the exposure speed of the camera and the starting speed of the light source can be kept synchronous by adjusting the exposure time, the effect that the light source is always on is achieved, the problem that the light source is started or closed to cause different backgrounds to cause stripes in the image is avoided, and the image for eliminating the stroboscopic stripes can be obtained.
Therefore, in the embodiment of the disclosure, the light sensation data output by the light sensor can be obtained; then, carrying out Fourier transform on the light sensation data to obtain frequency domain data corresponding to the light sensation data; then, the frequency of the ambient light is obtained from the frequency domain data based on the refresh frequency of the display screen. Therefore, the frequency of the ambient light can be obtained by processing the photosensitive data in the embodiment, and the frequency accuracy and the subsequent experience of shooting by using the frequency can be improved.
On the basis of the above ambient light frequency obtaining method, the embodiment of the present disclosure further provides an ambient light frequency obtaining apparatus, which is adapted to an electronic device with a light sensor disposed under a display screen, and referring to fig. 3, the apparatus includes:
a light sensation data acquisition module 31, configured to acquire light sensation data output by the light sensor;
the frequency domain data acquisition module 32 is configured to perform fourier transform on the light sensation data to obtain frequency domain data corresponding to the light sensation data;
an ambient light frequency obtaining module 33, configured to obtain the frequency of the ambient light from the frequency domain data based on the refresh frequency of the display screen.
In the embodiment of the disclosure, light sensation data output by the light sensor can be acquired; then, carrying out Fourier transform on the light sensation data to obtain frequency domain data corresponding to the light sensation data; then, the frequency of the ambient light is obtained from the frequency domain data based on the refresh frequency of the display screen. Therefore, the frequency of the ambient light can be obtained by processing the photosensitive data in the embodiment, and the frequency accuracy and the subsequent experience of shooting by using the frequency can be improved.
Optionally, the light sensation data includes sub data of at least two channels of the light sensor; referring to fig. 4, the ambient light frequency acquisition module 33 includes:
a common frequency obtaining unit 41, configured to obtain a common frequency included in frequency domain data corresponding to at least two channel sub-data, where the common frequency includes a refresh frequency of the display screen and a frequency of external ambient light;
a common frequency obtaining unit 42 for obtaining the frequency of the ambient light based on the common frequency and the refresh frequency of the display screen.
Optionally, the electronic device further comprises a camera, and the apparatus further comprises:
and the exposure time adjusting module is used for adjusting the exposure time of the camera according to the frequency of the environment light to obtain an image for eliminating the stroboscopic stripes.
The exposure time adjustment module includes:
a light source period acquiring unit for calculating the period of the ambient light according to the frequency of the ambient light, and taking the period of the ambient light as a light source period;
the light source time acquisition unit is used for calculating the opening time or closing time of the light source according to the light source period and taking the opening time or closing time of the light source as the light source time;
and the exposure time adjusting unit is used for adjusting the exposure time of the camera according to the light source time so as to synchronize the exposure of the camera with the opening of the light source.
It can be understood that the apparatus provided in the embodiments of the present disclosure corresponds to the method described above, and specific contents may refer to the contents of each embodiment of the method, which are not described herein again.
FIG. 5 is a block diagram illustrating an electronic device in accordance with an example embodiment. For example, the electronic device 500 may be a smartphone, a computer, a digital broadcast terminal, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.
Referring to fig. 5, electronic device 500 may include one or more of the following components: processing component 502, memory 504, power component 506, multimedia component 508, audio component 510, input/output (I/O) interface 512, sensor component 514, communication component 516, and image capture component 518.
The processing component 502 generally controls overall operation of the electronic device 500, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 502 may include one or more processors 520 to execute computer programs. Further, the processing component 502 can include one or more modules that facilitate interaction between the processing component 502 and other components. For example, the processing component 502 can include a multimedia module to facilitate interaction between the multimedia component 508 and the processing component 502.
The memory 504 is configured to store various types of data to support operations at the electronic device 500. Examples of such data include computer programs for any application or method operating on the electronic device 500, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 504 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The power supply component 506 provides power to the various components of the electronic device 500. The power components 506 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the electronic device 500. The power supply component 506 may include a power chip, and the controller may communicate with the power chip to control the power chip to turn on or off the switching device, so that the battery supplies power or does not supply power to the motherboard circuit.
The multimedia component 508 includes a screen that provides an output interface between the electronic device 500 and the target object. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a target object. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.
The audio component 510 is configured to output and/or input audio signals. For example, the audio component 510 includes a Microphone (MIC) configured to receive external audio signals when the electronic device 500 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 504 or transmitted via the communication component 516. In some embodiments, audio component 510 further includes a speaker for outputting audio signals.
The I/O interface 512 provides an interface between the processing component 502 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc.
The sensor assembly 514 includes one or more sensors for providing various aspects of status assessment for the electronic device 500. For example, the sensor component 514 may detect an open/closed state of the electronic device 500, the relative positioning of components, such as a display and keypad of the electronic device 500, the sensor component 514 may detect a change in the position of the electronic device 500 or a component, the presence or absence of a target object in contact with the electronic device 500, orientation or acceleration/deceleration of the electronic device 500, and a change in the temperature of the electronic device 500.
The communication component 516 is configured to facilitate wired or wireless communication between the electronic device 500 and other devices. The electronic device 500 may access a wireless network based on a communication standard, such as WiFi, 2G, 3G, 4G, 5G, or a combination thereof. In an exemplary embodiment, the communication component 516 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 516 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the electronic device 500 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic components.
In an exemplary embodiment, there is also provided a non-transitory readable storage medium, such as the memory 504 including instructions, comprising an executable computer program executable by the processor to implement: acquiring light sensation data output by a light sensor; performing Fourier transform on the light sensation data to obtain frequency domain data corresponding to the light sensation data; and acquiring the frequency of the ambient light from the frequency domain data based on the refreshing frequency of the display screen. The 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.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. The method for acquiring the frequency of the ambient light is suitable for electronic equipment with a light sensor arranged below a display screen, and comprises the following steps:
acquiring light sensation data output by a light sensor;
performing Fourier transform on the light sensation data to obtain frequency domain data corresponding to the light sensation data;
and acquiring the frequency of the ambient light from the frequency domain data based on the refreshing frequency of the display screen.
2. The method of claim 1, wherein the light sensation data comprises sub-data of at least two channels of the light sensor; obtaining a frequency of ambient light from the frequency domain data based on a refresh frequency of the display screen, comprising:
acquiring common frequencies contained in frequency domain data corresponding to at least two channel subdata, wherein the common frequencies comprise refresh frequencies of the display screen and frequencies of external ambient light;
acquiring the frequency of the ambient light based on the common frequency and the refresh frequency of the display screen.
3. The method of claim 1, wherein the electronic device further comprises a camera, the method further comprising:
and adjusting the exposure time of the camera according to the frequency of the ambient light to obtain an image with the stroboscopic fringes eliminated.
4. The method of claim 3, wherein adjusting the exposure time of the camera according to the frequency of the ambient light comprises:
calculating the period of the ambient light according to the frequency of the ambient light, and taking the period of the ambient light as a light source period;
calculating the opening time or closing time of the light source according to the light source period, and taking the opening time or closing time of the light source as the light source time;
and adjusting the exposure time of the camera according to the light source time so as to synchronize the exposure of the camera and the turning-on of the light source.
5. The utility model provides an ambient light frequency acquisition device which characterized in that is adapted to and is provided with optical line sensor's electronic equipment under the display screen, the device includes:
the light sensation data acquisition module is used for acquiring light sensation data output by the light sensor;
the frequency domain data acquisition module is used for carrying out Fourier transform on the light sensation data to obtain frequency domain data corresponding to the light sensation data;
and the ambient light frequency acquisition module is used for acquiring the frequency of the ambient light from the frequency domain data based on the refreshing frequency of the display screen.
6. The apparatus of claim 5, wherein the light sensation data comprises sub-data of at least two channels of the light sensor; the ambient light frequency acquisition module includes:
the common frequency acquiring unit is used for acquiring common frequencies contained in frequency domain data corresponding to at least two channel subdata, wherein the common frequencies comprise the refreshing frequency of the display screen and the frequency of external ambient light;
and the ambient light frequency acquisition unit is used for acquiring the frequency of the ambient light based on the common frequency and the refreshing frequency of the display screen.
7. The apparatus of claim 5, wherein the electronic device further comprises a camera, the apparatus further comprising:
and the exposure time adjusting module is used for adjusting the exposure time of the camera according to the frequency of the environment light to obtain an image for eliminating the stroboscopic stripes.
8. The apparatus of claim 7, wherein the exposure time adjustment module comprises:
a light source period acquiring unit for calculating the period of the ambient light according to the frequency of the ambient light, and taking the period of the ambient light as a light source period;
the light source time acquisition unit is used for calculating the opening time or closing time of the light source according to the light source period and taking the opening time or closing time of the light source as the light source time;
and the exposure time adjusting unit is used for adjusting the exposure time of the camera according to the light source time so as to synchronize the exposure of the camera with the opening of the light source.
9. An electronic device, comprising:
a processor;
a memory for storing a computer program executable by the processor;
wherein the processor is configured to execute the computer program in the memory to implement the steps of the method according to any of claims 1-4.
10. A computer-readable storage medium, in which an executable computer program is stored which, when executed by a processor, is capable of carrying out the steps of the method according to any one of claims 1 to 4.
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| CN113596344B (en) * | 2021-07-26 | 2023-10-24 | 艾酷软件技术(上海)有限公司 | Shooting processing method, shooting processing device, electronic equipment and readable storage medium |
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| CN114613317B (en) * | 2022-02-18 | 2023-10-31 | 深圳市汇顶科技股份有限公司 | Computing method of ambient light intensity of electronic device, related electronic device and chip |
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