CN112689221B - Recording method, recording device, electronic equipment and computer readable storage medium - Google Patents
Recording method, recording device, electronic equipment and computer readable storage medium Download PDFInfo
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- CN112689221B CN112689221B CN202011506200.6A CN202011506200A CN112689221B CN 112689221 B CN112689221 B CN 112689221B CN 202011506200 A CN202011506200 A CN 202011506200A CN 112689221 B CN112689221 B CN 112689221B
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Abstract
The application is applicable to the technical field of camera shooting, and provides a recording method, a recording device, electronic equipment and a computer readable storage medium, wherein the recording method is applied to the electronic equipment and comprises the following steps: acquiring position information of a target shooting object on a screen of the electronic equipment in a shooting picture; determining a target recording angle of a microphone in the electronic equipment according to the position information of the target shooting object on the screen, wherein the target recording angle points to the target shooting object; enhancing the recorded signals of the sounds located within the target recording angle and/or attenuating the recorded signals of the sounds located within other recording angles. The problem of poor recording quality when recording shooting objects can be solved through the application.
Description
Technical Field
The application belongs to the technical field of camera shooting, and particularly relates to a recording method, a recording device, electronic equipment and a computer readable storage medium.
Background
With the gradual improvement of the functions of electronic devices, electronic devices such as mobile phones and tablet computers generally have a camera function, and video recording can be performed by using the camera function of the electronic devices. However, due to the complex and variable environmental conditions during shooting, the sound signals collected by the microphone built in the electronic device are often mixed with environmental noise, and especially when the sound of the shooting object is small and the environmental noise is too large, the recording quality is poor.
Disclosure of Invention
The embodiment of the application provides a recording method, a recording device, electronic equipment and a computer readable storage medium, which can solve the problem of poor recording quality when a shooting object is recorded.
In a first aspect, an embodiment of the present application provides a recording method, which is applied to an electronic device, where the recording method includes:
acquiring position information of a target shooting object on a screen of the electronic equipment in a shooting picture;
determining a target recording angle of a microphone in the electronic equipment according to the position information of the target shooting object on the screen, wherein the target recording angle points to the target shooting object;
enhancing the recording signal of the sound located in the target recording angle and/or weakening the recording signal of the sound located in other recording angles, wherein the other recording angles are recording angles except the target recording angle in the recording angles of the microphone.
In a second aspect, an embodiment of the present application provides a recording apparatus, which is applied to an electronic device, and the recording apparatus includes:
the position acquisition module is used for acquiring the position information of a target shooting object on the screen of the electronic equipment in a shooting picture;
The angle determining module is used for determining a target recording angle of a microphone in the electronic equipment according to the position information of the target shooting object on the screen, wherein the target recording angle points to the target shooting object;
and the signal processing module is used for enhancing the sound recording signals of the sounds positioned in the target recording angle and/or weakening the sound recording signals of the sounds positioned in other recording angles, wherein the other recording angles refer to recording angles except the target recording angle in the recording angles of the microphone.
In a third aspect, an embodiment of the present application provides an electronic device, including a microphone, a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program to implement the recording method according to the first aspect.
In a fourth aspect, embodiments of the present application provide a computer readable storage medium storing a computer program, which when executed by a processor implements a recording method as described in the first aspect above.
In a fifth aspect, embodiments of the present application provide a computer program product, which when run on an electronic device, causes the electronic device to perform the recording method of any one of the above-described first aspects.
From the above, when video is recorded, the position of the target shooting object on the screen of the electronic equipment in the shooting picture can be obtained, the target recording angle of the microphone is obtained according to the position information of the target shooting object on the screen, the sound emitted by the target shooting object collected by the microphone can be enhanced by enhancing the recording signal of the sound located in the target recording angle, and the sound emitted by the non-target shooting object collected by the microphone can be weakened by weakening the recording signal of the sound located in other recording angles, so that the recording quality of the target shooting object is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic implementation flow chart of a recording method according to an embodiment of the present application;
FIG. 2a is an exemplary diagram of a screen coordinate system; FIG. 2b is an exemplary diagram of a detection box; FIG. 2c is another exemplary diagram of a detection frame;
Fig. 3 is a schematic implementation flow chart of a recording method provided in the second embodiment of the present application;
fig. 4 is a schematic implementation flow chart of a recording method provided in the third embodiment of the present application;
fig. 5 is a schematic structural diagram of a sound recording device according to a fourth embodiment of the present application;
fig. 6 is a schematic structural diagram of an electronic device according to a fifth embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system configurations, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It should be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
In addition, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.
The recording method provided by the embodiment of the application can be applied to electronic equipment with a video recording function such as a mobile phone and a tablet personal computer, and the embodiment of the application does not limit the specific type of the electronic equipment.
It should be understood that the sequence number of each step in this embodiment does not mean the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.
In order to illustrate the technical solutions described in the present application, the following description is made by specific examples.
Referring to fig. 1, a schematic implementation flow chart of a recording method provided in an embodiment of the present application, where the recording method may be applied to an electronic device, and as shown in the figure, the recording method may include the following steps:
The shooting picture may be a picture displayed on a preview interface when the electronic device records a video, and the target shooting object may be a shooting object capable of emitting a sound.
In this embodiment, when the electronic device detects that the camera application is started, a preview interface may be displayed on the screen, a preview screen of the target shooting object is displayed on the preview interface, and if the video recording function in the camera application is detected to be started, video recording is started, and the above step 101 is executed. The camera application may be software having a video recording function, and the camera application may be a system camera application of an electronic device or an installed third party camera application.
The electronic device generally displays function buttons such as a photo and a video on a screen when detecting the start of a camera application, and opens a video function in the camera application when detecting a selection operation of a video button displayed on the screen. The selection operation may be any operation that can start the video recording function, such as a single click, a double click, a sliding, etc.
In this embodiment of the present application, before executing step 101, it may be detected whether a target shooting object exists in the shooting screen by using an object recognition algorithm. When a target photographing object exists in the photographing screen, step 101 is performed. The object recognition algorithm may refer to any algorithm capable of performing object recognition. For example, when the target photographed object is a portrait, the object recognition algorithm may refer to a face recognition algorithm. When the target photographing object is a cat, the object recognition algorithm may refer to a classifier capable of recognizing the cat.
In this embodiment, the screen coordinate system may be set based on the size of the screen of the electronic device, and when the presence of the target photographic subject in the photographic screen is detected, the position information of the target photographic subject in the image coordinate system of the photographic screen may be acquired, and according to the conversion relationship between the image coordinate system of the photographic screen and the screen coordinate system, the position information of the target photographic subject in the image coordinate system of the photographic screen may be converted into the position information on the screen. An example diagram of a screen coordinate system is shown in fig. 2 a. The screen coordinate system and the conversion relation between the image coordinate system of the shooting picture and the screen coordinate system can be preset in the electronic equipment, so that the electronic equipment can acquire the position information of the target shooting object on the screen when a user uses the electronic equipment to record video.
As an example, step 101 may be implemented by step 401, step 402, step 407, and step 408 in the third embodiment.
The target recording angle points to the target shooting object, namely the target recording angle is the recording angle where the sound emitted by the target shooting object is located. The above recording angle can be understood as a pick-up angle. In order to achieve a better recording effect, the microphones may be omni-directional microphones with a larger recording angle (i.e., microphones with 360 degrees of stereo recording), the number of the microphones may be at least two, and by setting at least two microphones in the electronic device (for example, setting one microphone at the top and the bottom of the electronic device, respectively), the sound of the target shooting object collected by the at least two microphones can be superimposed after signal enhancement, so as to further enhance the recording signal of the target shooting object.
In this embodiment, the correspondence between the position information on the screen and the recording angle may be preset in the electronic device, or the correspondence may be obtained from other devices, where the correspondence at least includes a mapping relationship between the position information on the screen of the target shooting object and the target recording angle, and after the position information on the screen of the target shooting object is obtained, the target recording angle corresponding to the position information on the screen of the target shooting object may be obtained from the correspondence.
As an example, step 102 may be implemented by step 302 and step 303 in the second embodiment.
The other recording angles refer to recording angles except for the target recording angle in the recording angles of the microphone, for example, the recording angle of the microphone is 0-360 degrees, the target recording angle is 0-45 degrees, and then the other recording angles refer to other angles except for 0-45 degrees in 0-360 degrees. Sound within the target recording angle may refer to sound emitted by the target photographic subject, so enhancing the recording signal of sound within the target recording angle may be understood as enhancing the recording signal of sound emitted by the target photographic subject.
In this embodiment, the recording signal of the sound located within the target recording angle may be enhanced by increasing the recording gain of the sound located within the target recording angle; by reducing the recording gain of sounds located in other recording angles, the recording signal of sounds located in other recording angles is reduced.
Increasing the recording gain of sound within the target recording angle may refer to: the recording gain of the sound in the target recording angle is improved to a first recording gain, namely, the recording signal of the sound in the target recording angle is enhanced by the first recording gain; reducing the recording gain of sounds located within other recording angles may refer to: and reducing the recording gain of the sound in other recording angles to a second recording gain, namely reducing the recording signal of the sound in other recording angles by the second recording gain. Wherein the first recording gain is greater than the second recording gain; the first recording gain may be preset in the electronic device or obtained from other devices, or may be obtained according to a corresponding relationship between the recording gain and a distance, or may be obtained according to a corresponding relationship between the recording gain and an area of a detection frame, where the detection frame is used to select a target shooting object from a shooting frame, and as shown in fig. 2b and fig. 2c, are exemplary diagrams of the detection frame; acquiring the first recording gain according to the correspondence between the recording gain and the distance may refer to: the corresponding relation between the recording gain and the distance is preset in the electronic equipment, or the corresponding relation is obtained from other equipment, wherein the corresponding relation at least comprises a mapping relation between the distance of the target shooting object (namely the distance between the target shooting object and the electronic equipment) and the first recording gain, and the first recording gain can be obtained from the corresponding relation after the distance between the target shooting object and the electronic equipment is obtained; acquiring the first recording gain according to the corresponding relation between the recording gain and the detection frame may refer to: the corresponding relation between the recording gain and the size or the area of the detection frame is preset in the electronic equipment, or the corresponding relation is obtained from other equipment, wherein the corresponding relation at least comprises a mapping relation between the size of the detection frame of the target shooting object and the first recording gain, or at least comprises a mapping relation between the area of the detection frame of the target shooting object and the first recording gain, and after the size of the detection frame of the target shooting object is obtained, the first recording gain can be obtained from the corresponding relation. The second recording gain may be preset in the electronic device, or may be obtained from another device.
In order to record the target shooting object in real time, whether the target shooting object exists in the shooting picture or not can be detected at preset time intervals, the position information of the target shooting object on the screen is updated in real time when the target shooting object exists, and the target recording angle is updated in real time according to the position information of the target shooting object on the screen which is updated in real time, so that real-time tracking of sound emitted by the target shooting object is realized.
It should be noted that, in this embodiment, when the electronic device detects a focus locking operation of a user on a certain shooting object in the shooting screen, the shooting object may be determined to be a target shooting object, and the target shooting object is not required to be identified by using an object identification algorithm. The above-mentioned focus locking operation may be an operation of locking the target shooting object, and after the target shooting object is subjected to the focus locking operation, the position information of the target shooting object on the screen and the target recording angle corresponding to the target shooting object may be updated in real time, so as to ensure that the target recording angle is consistent with the recording angle where the target shooting object is located.
According to the method and the device for recording the video, when the video is recorded, the position of the target shooting object on the screen of the electronic device in the shooting picture can be obtained, the target recording angle of the microphone is obtained according to the position information of the target shooting object on the screen, the sound emitted by the target shooting object collected by the microphone can be enhanced by enhancing the recording signal of the sound located in the target recording angle, and the sound (such as environmental noise) emitted by the non-target shooting object collected by the microphone can be weakened by weakening the recording signal of the sound located in other recording angles, so that the recording quality of the target shooting object is improved.
Referring to fig. 3, a schematic implementation flow chart of a recording method provided in the second embodiment of the present application, where the recording method may be applied to an electronic device, and as shown in the figure, the recording method may include the following steps:
in step 301, position information of a target shooting object on a screen of an electronic device in a shooting picture is acquired, wherein the shooting picture is acquired through a target camera in the electronic device.
The step is partially the same as step 101, and the same parts can be referred to in the description related to step 101, and will not be repeated here.
Wherein, M cameras (for example, a wide-angle camera, a telephoto camera, a super-wide-angle camera, an infrared camera, etc. are integrated in the electronic device) are integrated in the electronic device, M is a positive integer, the target camera may be a camera that is turned on when video is recorded, and the target camera is at least one camera of the M cameras.
In this embodiment, the maximum shooting angles of the M cameras may be preset in the electronic device, and the maximum shooting angles of the M cameras are stored in a storage device of the electronic device.
In this embodiment, a correspondence between the maximum shooting angle, the position information on the screen, and the recording angle may be preset in the electronic device (the correspondence includes a mapping relationship between the maximum shooting angle of the target camera, the position information of the target shooting object on the screen, and the target recording angle), or the correspondence may be acquired from other devices, and after the maximum shooting angle of the target camera and the position information of the target shooting object on the screen are acquired, the target recording angle of the microphone may be determined according to the mapping relationship.
Optionally, determining the target recording angle according to the maximum shooting angle and the position information of the target shooting object on the screen includes:
acquiring a conversion angle according to the maximum shooting angle and the position information of the target shooting object on the screen, wherein the conversion angle is the angle of the target shooting object relative to the target camera;
and determining the target recording angle according to the conversion angle.
In this embodiment, since the target camera is usually located at the top of the electronic device and video recording is usually performed when the electronic device is in a landscape screen state, in order to reduce the calculation complexity of the conversion angle, the screen coordinate system may be established with the center point of the longest side of the electronic device in the landscape screen state as the origin, the direction of the longest side as the transverse axis, and the direction of the shortest side as the longitudinal axis, or with the intersection point of the longest side and the shortest side of the electronic device in the landscape screen state as the origin, the direction of the longest side as the transverse axis, and the direction of the shortest side as the longitudinal axis, and the conversion angle may be calculated according to the screen coordinate system, the maximum shooting angle of the target camera, and the positional information of the target shooting object on the screen.
Specifically, when the center point of the longest side of the electronic device in the landscape screen state is taken as the origin, the direction of the longest side is taken as the horizontal axis, and the direction of the shortest side is taken as the vertical axis, the screen coordinate system can be established according to the formula
Calculating a conversion angle; when a screen coordinate system is established by taking the intersection point of the longest side and the shortest side of the electronic equipment in a horizontal screen state as an origin, the direction of the longest side as a horizontal axis and the direction of the shortest side as a vertical axis, according to the formula +.>
And calculating a conversion angle. Wherein x is the abscissa of the target shooting object in the screen coordinate system, alpha is the conversion angle, W is the length of the longest side, and theta max The maximum shooting angle of the target camera.
The conversion angle may be represented by a positive angle alone or by a positive or negative angle, and is not limited thereto. For example, when a screen coordinate system is established with the center point of the longest side of the electronic device as the origin, the direction of the longest side as the horizontal axis, and the direction of the shortest side as the vertical axis, the left side of the vertical axis is defined as a positive angle, the right side of the vertical axis is defined as a negative angle, and when the target imaging object is located on the left side of the vertical axis, the calculation formula of the conversion angle is
When the target shooting object is positioned on the right side of the vertical axis, the calculation formula of the conversion angle is +. >
Optionally, before determining the target recording angle according to the conversion angle, the method further includes:
acquiring an angle corresponding relation, wherein the angle corresponding relation at least comprises a mapping relation between a conversion angle and a target recording angle;
according to the conversion angle, determining the target recording angle includes:
and determining a target recording angle corresponding to the conversion angle from the angle corresponding relation.
In this embodiment, an angle corresponding relationship may be pre-established in the electronic device, or the angle corresponding relationship may be obtained from another device, and after the conversion angle is obtained, the target recording angle corresponding to the conversion angle is obtained from the angle corresponding relationship.
It should be noted that, when the number of microphones is at least two, the above-mentioned angle correspondence includes a mapping relationship between the conversion angle and the target recording angle of each microphone in at least two microphones, and by enhancing the recording signal of the sound in the target recording angle of each microphone, the recording quality of the target shooting object can be further improved.
The step is the same as step 103, and specific reference may be made to the related description of step 103, which is not repeated here.
It should be noted that, in the embodiments shown in fig. 1 and fig. 3, when the number of target shooting objects is at least two, the method provided in the embodiments of the present application may further include: acquiring a recording gain corresponding to each target shooting object in at least two target shooting objects; and enhancing the sound recording signal of the sound in the target recording angle corresponding to the target shooting object according to the recording gain.
Taking an ith target object of the at least two target objects as an example for explanation, the ith target object is any one of the at least two target objects, and enhancing the recording signal of the sound located within the target recording angle includes: and according to the recording gain corresponding to the ith target shooting object, enhancing the recording signal of the sound in the target recording angle corresponding to the ith target shooting object. i is an integer greater than or equal to 1 and less than or equal to the number of target photographic subjects.
When the recording gain corresponding to each of the at least two target shooting objects is acquired, the acquisition can be performed in the following two ways.
The first way is:
acquiring detection frames of at least two target shooting objects, wherein the detection frames of the target shooting objects are used for selecting the target shooting objects from the shooting frames;
acquiring the proportional relation of detection frames of at least two target shooting objects, wherein the proportional relation of the detection frames refers to the proportional relation of the sizes of the detection frames or the proportional relation of the areas of the detection frames;
and acquiring recording gains corresponding to the at least two target shooting objects according to the proportional relation of the detection frames of the at least two target shooting objects.
When the detection frame of the target shooting object is obtained, the size of the detection frame may be obtained, the area of the detection frame is calculated according to the size, the size of the detection frame includes the length and the width of the detection frame, and the proportional relationship of the size of the detection frame may refer to the proportional relationship of the length of the detection frame or the proportional relationship of the width of the detection frame.
According to the proportional relation of the detection frames of at least two target shooting objects, obtaining the recording gains corresponding to the at least two target shooting objects can be: the obtained proportional relation of the recording gains corresponding to the at least two target shooting objects is the same as the proportional relation of the detecting frames of the at least two target shooting objects, and the recording gains corresponding to the target shooting objects are obtained according to the proportional relation of the detecting frames, so that the recording effects of the sounds can be ensured to be consistent with the actual scenes.
For example, there are two target shooting objects in the shooting picture, namely a target shooting object 1 and a target shooting object 2, the area of the detection frame of the target shooting object 1 is a, the area of the detection frame of the target shooting object 2 is B, and the proportional relation of the areas of the detection frames of the target shooting object 1 and the target shooting object 2 is a: b, then the proportional relationship between the recording gains of the target object 1 and the target object 2 is a: B.
the second way is:
acquiring the distance between at least two target shooting objects and the electronic equipment;
calculating the proportional relation of the distances between the at least two target shooting objects and the electronic equipment according to the distances between the at least two target shooting objects and the electronic equipment;
and acquiring recording gains of at least two target shooting objects according to the proportional relation of the distances between the at least two target shooting objects and the electronic equipment.
In this embodiment, the distance between each target shooting object and the electronic device may be acquired by a distance sensor in the electronic device. The more distant the target shooting object from the target camera is, the less the sound in the actual scene is, and the more close the target shooting object from the target camera is, the more sound in the actual scene is, so the recording gain corresponding to the target shooting object is obtained according to the proportion relation of the distance, and the recording effect of the sound is consistent with the actual scene.
For example, two target shooting objects, namely a target shooting object 1 and a target shooting object 2, are arranged in a shooting picture, the distance between the target shooting object 1 and the electronic equipment is C, the distance between the target shooting object 2 and the electronic equipment is D, and the proportional relation between the distances between the two target shooting objects and the electronic equipment is C: d, the proportional relationship between the recording gains of the target object 1 and the target object 2 is also C: D.
optionally, after enhancing the recording signal of the sound located within the target recording angle, the embodiment further includes:
if the target shooting object is detected to disappear from the shooting picture, continuing to execute the recording signal for enhancing the sound in the target recording angle;
if the target shooting object is detected to return to the shooting picture again within the preset time, stopping executing the recording signal for enhancing the sound in the target recording angle, and returning to execute the acquisition of the position information of the target shooting object in the shooting picture on the screen of the electronic equipment;
and if the target shooting object is not detected to return to the shooting picture again within the preset time, the microphone is adjusted to be omni-directional recording.
In the detection process of the target shooting object, as the target shooting object may rotate, the target camera may not detect the target shooting object in a short time, and according to the description of the first embodiment, the electronic device may update the target recording angle in real time, so when the target shooting object is detected to disappear from the shooting picture, recording may be continued at the last updated target recording angle within a preset time, if the target shooting object is detected to return to the shooting picture again within the preset time, tracking may be continued for the target shooting object, the target recording angle is updated according to the updated position information of the target shooting object on the screen, and recording may be continued according to the updated target recording angle; if the target shooting object is not detected to return to the shooting picture again within the preset time, it is determined that the target shooting object may leave the shooting picture for a long time, and at this time, in order to ensure the recording effect of the microphone, the microphone may be adjusted to omni-directional recording. Wherein, the omni-directional recording may mean that the recording gains of all recording angles of the microphone are the same.
When video is recorded, a target camera in the electronic device usually continuously collects multiple frames of shooting pictures, and updates the shooting pictures displayed on a screen of the electronic device in real time. Taking the s-th frame shooting picture and the s+1-th frame shooting picture in the multi-frame shooting picture as examples, describing a detection process that the target shooting object disappears from the shooting pictures, and a detection process that the target shooting object does not return to the shooting pictures within preset time, wherein the s-th frame shooting picture can be any frame shooting picture acquired by the target camera, the s+1-th frame shooting picture is the next frame shooting picture of the s-th frame shooting picture, if the target shooting object is detected in the s-th frame shooting picture, the target shooting object is determined to disappear from the s+1-th frame shooting picture, a timer of the electronic equipment is started for timing at the moment, and if the target shooting object is not detected in the shooting pictures acquired by the target camera within the preset time when the timing time reaches the preset time, the target shooting object is determined to return to the shooting picture again within the preset time.
Optionally, when the number of target shooting objects is at least two, the present embodiment further includes:
Acquiring a first target shooting object from at least two target shooting objects;
the recording signal of the first sound is weakened, and the first sound is the sound in the target recording angle corresponding to the first target shooting object.
In this embodiment, when at least two target subjects exist in the photographing screen, if it is desired to enhance the sound emitted from some of the target subjects and attenuate the sound emitted from other target subjects, the target subject (i.e., the first target subject) whose sound is to be attenuated may be selected from the at least two target subjects. Wherein, when the first target shooting object is selected from the at least two target shooting objects, a third operation can be performed on the first target shooting object displayed in the shooting picture; or a fourth operation is performed on the second target photographic subject displayed in the photographic screen. The first target subject may be understood as a target subject requiring sound attenuation, and the second target subject refers to a target subject other than the first target subject, that is, a target subject requiring sound enhancement, of the at least two target subjects
Specifically, when detecting a third operation of a user on a certain target shooting object displayed in a shooting picture, the electronic device may determine that the target shooting object is a first target shooting object; or when the electronic device detects the fourth operation of the user on a certain target shooting object displayed in the shooting picture, the target shooting object can be determined to be a second target shooting object, and the rest target shooting objects are first target shooting objects. Wherein the third operation may refer to an operation for determining the first target photographing object, such as a double-click operation; the fourth operation may refer to an operation for determining the second target photographing object, such as a click operation.
Optionally, after attenuating the recording signal of the first sound, the embodiment further includes:
if a first operation on a first target photographic subject or a second operation on a second target photographic subject is detected, the recording signal of the first sound is enhanced.
In this embodiment, after weakening the recording signal of the first sound, if the electronic device detects the first operation of the user on the first target shooting object or the second operation on the second target shooting object, the position information of the first target shooting object on the screen may be obtained, so as to obtain the target recording angle of the first target shooting object, and according to the target recording angle, the enhancement of the recording signal of the first sound is achieved, so that the synchronous recording of the first target shooting object and the second target shooting object is achieved. The first operation and the second operation may refer to triggering an operation of performing sound enhancement on the first target shooting object, where the first operation is performed by performing an operation on the first target shooting object, and the second operation is performed by performing an operation on the second target shooting object.
According to the method and the device for locating the sound source, the maximum shooting angle of the target camera is obtained, the target recording angle of the microphone is obtained according to the position information of the target shooting object on the screen and the maximum shooting angle of the target camera, the sound source is located, the sound source locating process is simple, and the sound source locating efficiency is improved.
Referring to fig. 4, a schematic implementation flow chart of a recording method provided in the third embodiment of the present application is shown, where the recording method may be applied to an electronic device, and as shown in the drawing, the recording method may include the following steps:
in step 401, position information of a first feature point on a target shooting object on a screen in a shooting picture is acquired.
The first feature point may be a point in the shot image, where the point can reflect an essential feature of the target shot object, for example, the target shot object is a portrait, and the first feature point may be a face area in the shot image.
The position information of the first feature point on the screen may be acquired by the acquisition method of the position information of the target photographic subject on the screen described in the first embodiment.
In step 402, the position information of the first feature point on the screen is determined as the position information of the target shooting object on the screen.
Since the target photographic subject normally occupies a certain area in the photographic screen when displayed in the photographic screen, in order to simplify the calculation process of the position information of the target photographic subject on the screen, the position information of the first feature point on the screen may be regarded as the position information of the target photographic subject on the screen.
The step is the same as step 102, and the detailed description of step 102 is omitted here.
The step is the same as step 103, and specific reference may be made to the related description of step 103, which is not repeated here.
When video is recorded, a target camera in the electronic device usually continuously collects multiple frames of shooting pictures, and updates the shooting pictures displayed on a screen of the electronic device in real time. Taking the kth frame shot and the kth+1 frame shot in the multi-frame shot as examples, the specific detection process of step 405 is described, where the kth frame shot may be any frame shot acquired by the target camera, the kth+1 frame shot is the next frame shot of the kth frame shot, and if the electronic device detects the first feature point in the kth frame shot and does not detect the first feature point in the kth+1 frame shot, it may be determined that the first feature point disappears from the kth+1 frame shot.
In the above detection process, whether the first feature point exists in the kth frame shot and the kth+1st frame shot may be detected by the first feature point recognition algorithm. The method can also detect whether a first feature point exists in a kth frame shooting picture through a first feature point identification algorithm, if the first feature point exists in the kth frame shooting picture, the image feature of the first feature point in the kth frame shooting picture is acquired, the image feature is determined to be a target image feature, whether an area matched with the target image feature exists in the kth+1 frame shooting picture or not is detected, if the area matched with the target image feature exists, the first feature point exists in the kth+1 frame shooting picture is determined, and if the area matched with the target image feature does not exist, the first feature point does not exist in the kth+1 frame shooting picture. The first feature point recognition algorithm may be any algorithm for recognizing the first feature point in the photographed image, which is not limited herein. For example, the first feature point recognition algorithm is a recognition algorithm based on a first feature point template, and specifically may be: and detecting whether a feature point matched with the first feature point template exists in the shooting picture, if so, determining that the first feature point exists in the shooting picture, and if not, determining that the first feature point does not exist in the shooting picture.
The first feature point and the second feature point are different feature points on the target shooting object, for example, the first feature point is a face area of the target shooting object, and the second feature point is a neck area of the target shooting object.
In the present embodiment, whether or not the second feature point exists in the photographed picture may be detected by the second feature point recognition algorithm. The second feature point recognition algorithm may be any algorithm for recognizing the second feature point in the photographed image, which is not limited herein. For example, the second feature point recognition algorithm is a recognition algorithm based on a second feature point template, which may specifically be: and detecting whether a feature point matched with the second feature point template exists in the shooting picture, if so, determining that the second feature point exists in the shooting picture, and if not, determining that the second feature point does not exist in the shooting picture. The second feature point may be present in the same shot screen as the first feature point, or may be present in a different shot screen from the first feature point.
When detecting whether a target shooting object exists in a shooting picture, the target shooting object may rotate, if the target shooting object cannot be detected in a short time by the electronic equipment, the actual position of the target shooting object in a shooting scene is inconsistent with a target recording angle, and in order to improve the problem, the electronic equipment can track the target shooting object by detecting at least two characteristic points in the target shooting object when detecting the target shooting object.
The method for acquiring the position information of the target shooting object on the screen described in the first embodiment can be used for acquiring the position information of the second feature point on the screen.
In step 408, the position information of the second feature point on the screen is determined as the position information of the target shooting object on the screen.
When the first feature point disappears from the shooting picture, tracking of the target shooting object can be achieved by acquiring the position information of the second feature point on the screen.
According to the method and the device for detecting the characteristic points of the target shooting object, the at least two characteristic points in the target shooting object are detected in the detection process of the target shooting object, and therefore real-time tracking of the target shooting object can be achieved.
It should be noted that the embodiments shown in fig. 1 to 3 may further include the steps 405 to 408. The embodiments of the present application are not limited in this regard.
Referring to fig. 5, a schematic structural diagram of a sound recording apparatus according to a fourth embodiment of the present application, where the sound recording apparatus may be applied to an electronic device, and for convenience of explanation, only a portion related to the embodiment of the present application is shown.
The recording device comprises:
A position obtaining module 51, configured to obtain position information of a target shooting object on a screen of the electronic device in a shooting picture;
the angle determining module 52 is configured to determine a target recording angle of a microphone in the electronic device according to the position information of the target shooting object on the screen, where the target recording angle points to the target shooting object;
the signal processing module 53 is configured to enhance the recording signal of the sound located in the target recording angle and/or attenuate the recording signal of the sound located in other recording angles, where the other recording angles are recording angles of the microphone other than the target recording angle.
Optionally, the shooting picture is collected by a target camera in the electronic device, and the recording device further includes:
the angle acquisition module is used for acquiring the maximum shooting angle of the target camera;
the angle determining module 52 is specifically configured to:
and determining the target recording angle according to the maximum shooting angle and the position information of the target shooting object on the screen.
The angle determination module 52 includes:
the first acquisition unit is used for acquiring a conversion angle according to the maximum shooting angle and the position information of the target shooting object on the screen, wherein the conversion angle is the angle of the target shooting object relative to the target camera;
And the first determining unit is used for determining the target recording angle according to the conversion angle.
Optionally, the recording device further includes:
the relation acquisition module is used for acquiring an angle corresponding relation which at least comprises a mapping relation between a conversion angle and a target recording angle;
the first determining unit is specifically configured to:
and determining a target recording angle corresponding to the conversion angle from the angle corresponding relation.
Optionally, the location obtaining module 51 includes:
a second acquisition unit for acquiring position information of the first feature point on the screen on the target shooting object;
and a second determining unit configured to determine position information of the first feature point on the screen as position information of the target photographic subject on the screen.
Optionally, the above-mentioned position obtaining module 51 further includes:
a third obtaining unit, configured to obtain, if it is determined that the second feature point exists in the photographed picture in a case where the first feature point disappears from the photographed picture, position information of the second feature point on the screen, where the first feature point and the second feature point are different feature points of the target photographed object;
and a third determination unit configured to determine position information of the second feature point on the screen as position information of the target photographic subject on the screen.
Optionally, the above-mentioned position obtaining module 51 further includes:
and a return execution unit configured to return to executing the second acquisition unit if the first feature point is newly detected in the photographed screen.
Optionally, when the number of target shooting objects is at least two, the recording apparatus further includes:
the recording gain acquisition module is used for acquiring recording gains corresponding to at least two target shooting objects;
for the ith target object, the ith target object is any one of at least two target objects, and the signal processing module 53 is specifically configured to:
and according to the recording gain corresponding to the ith target shooting object, enhancing the recording signal of the sound in the target recording angle corresponding to the ith target shooting object.
Optionally, the recording gain obtaining module is specifically configured to:
acquiring detection frames of at least two target shooting objects, wherein the detection frames of the target shooting objects are used for selecting the target shooting objects from the shooting frames;
acquiring the proportional relation of detection frames of at least two target shooting objects, wherein the proportional relation of the detection frames refers to the proportional relation of the sizes of the detection frames or the proportional relation of the areas of the detection frames;
And acquiring recording gains corresponding to the at least two target shooting objects according to the proportional relation of the detection frames of the at least two target shooting objects.
Optionally, the recording gain obtaining module is specifically configured to:
acquiring the distance between at least two target shooting objects and the electronic equipment;
calculating the proportional relation of the distances between the at least two target shooting objects and the electronic equipment according to the distances between the at least two target shooting objects and the electronic equipment;
and acquiring recording gains corresponding to the at least two target shooting objects according to the proportional relation of the distances between the at least two target shooting objects and the electronic equipment.
Optionally, the recording device further includes:
the operation execution module is used for continuously executing the sound recording signal for enhancing the sound positioned in the target sound recording angle if the target shooting object is detected to disappear from the shooting picture;
the stopping execution module is used for stopping executing the recording signal for enhancing the sound in the target recording angle and returning to execute the position information of the target shooting object on the screen of the electronic equipment in the shooting picture if the target shooting object is detected to return to the shooting picture within the preset time;
the recording adjusting module is used for adjusting the microphone to be an omnidirectional recording if the target shooting object is not detected to return to the shooting picture again within the preset time.
Optionally, when the number of target shooting objects is at least two, the recording apparatus further includes:
the object acquisition module is used for acquiring a first target shooting object from at least two target shooting objects;
the signal weakening module is used for weakening a recording signal of a first sound, and the first sound is a sound located in a target recording angle corresponding to a first target shooting object.
Optionally, the recording device further includes:
and the signal enhancement module is used for enhancing the recording signal of the first sound if detecting the first operation on the first target shooting object or the second operation on the second target shooting object, wherein the second target shooting object refers to a target shooting object except the first target shooting object in at least two target shooting objects.
The recording device provided in the embodiment of the present application may be applied to the foregoing method embodiment, and details refer to descriptions of the foregoing method embodiment, which are not repeated herein.
Fig. 6 is a schematic structural diagram of an electronic device according to a fifth embodiment of the present application. As shown in fig. 6, the electronic device 6 of this embodiment includes: at least one processor 60 (only one shown in fig. 6), a memory 61, a computer program 62 stored in the memory 61 and executable on the at least one processor 60, and at least one microphone 63, the steps of any of the various recording method embodiments described above being implemented when the computer program 62 is executed by the processor 60.
The electronic device 6 may include, but is not limited to, a processor 60, a memory 61. It will be appreciated by those skilled in the art that fig. 6 is merely an example of the electronic device 6 and is not meant to be limiting as the electronic device 6, and may include more or fewer components than shown, or may combine certain components, or different components, such as may also include input-output devices, network access devices, etc.
The processor 60 may be a central processing unit (Central Processing Unit, CPU), the processor 60 may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 61 may in some embodiments be an internal storage unit of the electronic device 6, such as a hard disk or a memory of the electronic device 6. The memory 61 may in other embodiments also be an external storage device of the electronic device 6, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Card (Flash Card) or the like, which are provided on the electronic device 6. Further, the memory 61 may also include both an internal storage unit and an external storage device of the electronic device 6. The memory 61 is used to store an operating system, application programs, boot loader (BootLoader), data, and other programs and the like, such as program codes of computer programs and the like. The memory 61 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above device may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/electronic device and method may be implemented in other manners. For example, the apparatus/electronic device embodiments described above are merely illustrative, e.g., the division of modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present application may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, where the computer program, when executed by a processor, may implement the steps of each of the method embodiments described above. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, executable files or in some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the content of the computer readable medium can be appropriately increased or decreased according to the requirements of the jurisdiction's jurisdiction and the patent practice, for example, in some jurisdictions, the computer readable medium does not include electrical carrier signals and telecommunication signals according to the jurisdiction and the patent practice.
The present application implementing all or part of the processes in the methods of the embodiments described above may also be implemented by a computer program product, which when run on an electronic device causes the electronic device to perform the steps in the embodiments of the methods described above.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (13)
1. A recording method applied to an electronic device, the recording method comprising:
acquiring position information of a target shooting object on a screen of the electronic equipment in a shooting picture;
determining a target recording angle of a microphone in the electronic equipment according to the position information of the target shooting object on the screen, wherein the target recording angle points to the target shooting object;
Enhancing a sound recording signal of sound located within the target sound recording angle;
when the number of the target shooting objects is at least two, the recording method further comprises:
acquiring recording gains corresponding to at least two target shooting objects;
the enhancing the sound recording signal of the sound located within the target sound recording angle includes:
and according to the recording gain corresponding to the ith target shooting object, enhancing the recording signal of sound in the target recording angle corresponding to the ith target shooting object, wherein the ith target shooting object is any one of at least two target shooting objects.
2. The recording method of claim 1, wherein the photographed picture is collected by a target camera in the electronic device, and further comprising, before determining a target recording angle of a microphone in the electronic device according to the position information of the target photographed object on the screen:
obtaining the maximum shooting angle of the target camera;
the determining the target recording angle of the microphone in the electronic equipment according to the position information of the target shooting object on the screen comprises the following steps:
And determining the target recording angle according to the maximum shooting angle and the position information of the target shooting object on the screen.
3. The recording method of claim 2, wherein the determining the target recording angle based on the maximum photographing angle and the position information of the target photographing object on the screen comprises:
acquiring a conversion angle according to the maximum shooting angle and the position information of the target shooting object on the screen, wherein the conversion angle is the angle of the target shooting object relative to the target camera;
and determining the target recording angle according to the conversion angle.
4. The recording method as set forth in claim 3, further comprising, before determining the target recording angle according to the conversion angle:
acquiring an angle corresponding relation, wherein the angle corresponding relation at least comprises a mapping relation between the conversion angle and the target recording angle;
the determining the target recording angle according to the conversion angle comprises:
and determining the target recording angle corresponding to the conversion angle from the angle corresponding relation.
5. The recording method according to any one of claims 1 to 4, wherein the acquiring of the positional information of the target photographic subject on the screen of the electronic device in the photographic screen includes:
acquiring position information of a first feature point on the target shooting object on the screen;
and determining the position information of the first feature point on the screen as the position information of the target shooting object on the screen.
6. The recording method of claim 5, further comprising, after determining that the position information of the first feature point on the screen is the position information of the target photographic subject on the screen:
acquiring position information of a second feature point on the screen if the second feature point exists in the shooting picture under the condition that the first feature point disappears from the shooting picture, wherein the first feature point and the second feature point are different feature points of the target shooting object;
and determining the position information of the second feature point on the screen as the position information of the target shooting object on the screen.
7. The recording method of claim 6, further comprising, after determining that the position information of the second feature point on the screen is the position information of the target photographic subject on the screen:
And if the first characteristic point is re-detected in the shooting picture, returning to execute the acquisition of the position information of the first characteristic point on the target shooting object on the screen.
8. The recording method of claim 1, wherein the obtaining recording gains corresponding to at least two of the target shooting subjects comprises:
acquiring at least two detection frames of the target shooting objects, wherein the detection frames of the target shooting objects are used for selecting the target shooting objects from the shooting frames;
acquiring the proportional relation of at least two detection frames of the target shooting object, wherein the proportional relation of the detection frames refers to the proportional relation of the sizes of the detection frames or the proportional relation of the areas of the detection frames;
and acquiring recording gains corresponding to at least two target shooting objects according to the proportional relation of the detection frames of the at least two target shooting objects.
9. The recording method of claim 1, wherein the obtaining recording gains corresponding to at least two of the target shooting subjects comprises:
obtaining the distance between at least two target shooting objects and the electronic equipment;
calculating the proportional relation of the distances between at least two target shooting objects and the electronic equipment according to the distances between at least two target shooting objects and the electronic equipment;
And acquiring recording gains corresponding to at least two target shooting objects according to the proportional relation of the distances between the at least two target shooting objects and the electronic equipment.
10. The recording method according to any one of claims 1 to 4, further comprising, after enhancing the recording signal of the sound located within the target recording angle:
if the target shooting object is detected to disappear from the shooting picture, continuing to execute the sound recording signal for enhancing the sound positioned in the target sound recording angle;
if the target shooting object is detected to return to the shooting picture again within the preset time, stopping executing the sound recording signal for enhancing the sound in the target recording angle, and returning to execute the position information of the target shooting object on the screen of the electronic equipment in the acquisition shooting picture;
and if the target shooting object is not detected to return to the shooting picture again within the preset time, the microphone is adjusted to be omni-directional recording.
11. A sound recording apparatus applied to an electronic device, the sound recording apparatus comprising:
the position acquisition module is used for acquiring the position information of a target shooting object on the screen of the electronic equipment in a shooting picture;
The angle determining module is used for determining a target recording angle of a microphone in the electronic equipment according to the position information of the target shooting object on the screen, wherein the target recording angle points to the target shooting object;
the signal processing module is used for enhancing the recording signal of the sound positioned in the target recording angle;
the recording device further includes:
the recording gain acquisition module is used for acquiring recording gains corresponding to at least two target shooting objects when the number of the target shooting objects is at least two;
the signal processing module is specifically configured to:
and according to the recording gain corresponding to the ith target shooting object, enhancing the recording signal of sound in the target recording angle corresponding to the ith target shooting object, wherein the ith target shooting object is any one of at least two target shooting objects.
12. An electronic device comprising a microphone, a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the recording method according to any of claims 1 to 10 when executing the computer program.
13. A computer-readable storage medium storing a computer program, characterized in that the computer program, when executed by a processor, implements the sound recording method according to any one of claims 1 to 10.
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| CN113099031B (en) * | 2021-02-26 | 2022-05-17 | 华为技术有限公司 | Sound recording method and related equipment |
| CN113542466A (en) * | 2021-07-07 | 2021-10-22 | Oppo广东移动通信有限公司 | Audio processing method, electronic device and storage medium |
| CN113655985A (en) * | 2021-08-09 | 2021-11-16 | 维沃移动通信有限公司 | Audio recording method and device, electronic equipment and readable storage medium |
| CN113840087B (en) * | 2021-09-09 | 2023-06-16 | Oppo广东移动通信有限公司 | Sound processing method, sound processing device, electronic equipment and computer readable storage medium |
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