CN109729272B - Shooting control method, terminal device and computer readable storage medium - Google Patents
Shooting control method, terminal device and computer readable storage medium Download PDFInfo
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Abstract
The application discloses a shooting control method, terminal equipment and a computer-readable storage medium, which are applied to the technical field of image processing. The method comprises the following steps: detecting whether a characteristic area of a preset type shot exists in a preview picture; if so, determining the definition and the size of the characteristic region in the preview picture; detecting whether the definition of a characteristic region in a preview picture reaches a first definition threshold value or not, and whether the size of the characteristic region in the preview picture reaches a first size threshold value or not; if the definition does not reach the first definition threshold, when a shooting instruction is received, adjusting the first shooting parameter so that the definition of the characteristic region in the shot picture reaches the first definition threshold; if the size does not reach the first size threshold, when a shooting instruction is received, adjusting the second shooting parameter so that the size of the characteristic region in the shot picture reaches the first size threshold. Therefore, the image quality of the image can be improved by implementing the embodiment of the application.
Description
Technical Field
The present application relates to the field of image processing technologies, and in particular, to a shooting control method, a terminal device, and a computer-readable storage medium.
Background
With the continuous development of terminal technology, terminal devices (e.g., smart phones, tablets, etc.) are closely related to the daily life of people, and have more and more functions and are simpler and more convenient to operate. The photographing function of the terminal device has become a very popular function at present. The user can record life by photographing people, animals, scenery, etc. using the terminal device.
However, in practical applications, it is found that sometimes the quality of the image captured by the terminal device is not high, so that the user cannot identify the content in the image. Therefore, how to improve the picture quality of the captured image is an urgent problem to be solved.
Disclosure of Invention
The embodiment of the application provides a shooting control method, terminal equipment and a computer readable storage medium, which are beneficial to improving the picture quality of a shot image.
In a first aspect, an embodiment of the present application provides a shooting control method, including:
the terminal equipment detects whether a characteristic area of a preset type shot exists in a preview picture;
if the characteristic region exists in the preview picture, the terminal equipment determines the definition and the size of the characteristic region in the preview picture;
the terminal equipment detects whether the definition of the characteristic region in the preview picture reaches a first definition threshold value or not, and whether the size of the characteristic region in the preview picture reaches a first size threshold value or not;
if the definition of the characteristic region in the preview picture does not reach the first definition threshold, when a shooting instruction is received, the terminal equipment adjusts a first shooting parameter so that the definition of the characteristic region in a shot picture reaches the first definition threshold;
if the size of the characteristic region in the preview picture does not reach the first size threshold, when a shooting instruction is received, the terminal equipment adjusts a second shooting parameter so that the size of the characteristic region in the shot picture reaches the first size threshold.
In a second aspect, an embodiment of the present application provides a terminal device, where the terminal device includes a unit configured to perform the method of the first aspect.
In a third aspect, an embodiment of the present application provides another terminal device, including a processor, a memory, and a camera, where the processor, the memory, and the camera are connected to each other, where the memory is used to store a computer program that supports an identification device to execute the foregoing method, and the computer program includes program instructions, and the processor is configured to call the program instructions to execute the foregoing method according to the first aspect. Optionally, the terminal device may further comprise a user interface.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium storing a computer program, the computer program comprising program instructions that, when executed by a processor, cause the processor to perform the method of the first aspect.
In the embodiment of the application, the terminal equipment can detect the definition and the size of the characteristic area of the preset type shooting object in the preview picture. If the definition of the characteristic region is low and the size is small, the shooting parameters are adjusted, so that the definition and the size of the characteristic region in the shot picture are improved, and a user can better identify the picture of the characteristic region. Therefore, by implementing the embodiment of the application, the image quality of the image is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flowchart of a shooting control method provided in an embodiment of the present application;
fig. 2 is a schematic diagram of a preview screen according to an embodiment of the present application;
fig. 3 is a schematic flowchart of another shooting control method provided in an embodiment of the present application;
fig. 4 is a schematic flowchart of another shooting control method provided in an embodiment of the present application;
fig. 5 is a schematic flowchart of another shooting control method provided in an embodiment of the present application;
FIG. 6 is a schematic diagram of a face region selection interface provided by an embodiment of the present application;
fig. 7 is a schematic flowchart of another shooting control method provided in an embodiment of the present application;
fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of another terminal device provided in an embodiment of the present application.
Detailed Description
Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to improve the picture quality of a shot image, the embodiment of the application provides a shooting control method, a terminal device and a computer readable storage medium. The terminal device may include any device having a photographing function. For example, this terminal equipment can be cell-phone, computer, panel, personal computer, smart watch, camera and unmanned aerial vehicle etc. and this application does not limit.
Referring to fig. 1, fig. 1 is a schematic flow chart of a shooting control method according to an embodiment of the present disclosure. Specifically, as shown in fig. 1, the shooting control method may include the following steps 101 to 105, where:
101. the terminal equipment detects whether a characteristic area of a preset type shooting object exists in the preview picture.
In the embodiment of the application, the terminal device can output the preview picture before shooting the image, and when the camera is aligned with the shot object, the image of the shot object can be displayed in the preview picture. The user can decide whether to perform photographing or not according to the preview effect of the photographed object in the preview screen. Optionally, after the terminal device enters the preview screen, it may detect whether the preview screen has a feature area of a preset type of shooting object. Or, after entering the preview screen, the terminal device may receive a start instruction for starting the clear mode, which is input by the user; the terminal equipment starts a clear mode and detects whether a characteristic area of a preset type shot exists in a preview picture or not in the clear mode.
The preset type shooting object can be a character, a dog, a cat or other types of shooting objects. The feature region of the preset type photographic subject may be a face region of the preset type photographic subject, a head region of the preset type photographic subject, a whole body of the preset type photographic subject, or the like. For example, if the preset type photographic subject is a person, the characteristic region of the preset type photographic subject may be a face region of the person. If the preset type photographic subject is a dog, the characteristic region of the preset type photographic subject may be a head region of the dog. If the preset type photographic subject is a cat, the characteristic region of the preset type photographic subject may be the whole body of the cat.
In this embodiment of the application, if the terminal device detects that the feature area of the preset type of the shot exists in the preview screen, step 102 is executed. Optionally, if the terminal device detects that the feature area of the preset type of shooting object does not exist in the preview picture, the terminal device continues to detect whether the feature area of the preset type of shooting object exists in the preview picture.
102. If the characteristic area exists in the preview picture, the terminal equipment determines the definition and the size of the characteristic area in the preview picture.
For example, the terminal apparatus detects whether or not a face area of a person exists in the preview screen. If the terminal device detects that the face area of the person exists in the preview screen, the terminal device determines the definition and the size of the face area of the person in the preview screen.
As an optional implementation manner, the terminal device may determine the definition of the feature region of the preset type photographic subject in the preview picture according to the brightness value and the number of color noise pixel points of the feature region of the preset type photographic subject in the preview picture. For example, if the brightness value of the face area of the person in the preview screen is low and the number of color noise pixels is large, the terminal device may determine that the sharpness of the face area of the person in the preview screen is low.
Optionally, the corresponding relationship between the brightness value and the number of color noise pixel points and the definition may be preset, so that the terminal device may determine the definition of the feature region of the preset type photographic object in the preview picture according to the corresponding relationship and the brightness value and the number of color noise pixel points of the feature region of the preset type photographic object in the preview picture. For example, the terminal device may preset a corresponding relationship between the brightness value and the number and definition of color noise pixels as shown in table 1 below. If the brightness value of the characteristic region of the preset type shooting object in the preview picture is 100 nit (nit) and the number of the color noise pixel points is 200, the definition of the characteristic region of the preset type shooting object in the preview picture is a definition value 1. The higher the brightness value is, the less the number of color noise pixel points is, and the higher the corresponding definition is. For example, as shown in table 1 below, the sharpness value 3 is greater than the sharpness value 2 is greater than the sharpness value 1.
TABLE 1
| Brightness value | Number of color noise pixel points | Definition of |
| 100 | 200 | Definition value 1 |
| 120 | 180 | Definition value 2 |
| 130 | 150 | Definition value 3 |
Optionally, when a plurality of feature areas exist in the preview screen, the terminal device may select one feature area from the plurality of feature areas as the target feature area, and determine only the definition and the size of the target feature area in the preview screen. After the definition and the size of the target feature area in the preview picture are determined, whether the definition of the target feature area in the preview picture reaches a first definition threshold value or not and whether the size of the target feature area in the preview picture reaches a first size threshold value or not are judged. If the definition of the target feature area in the preview picture does not reach the first definition threshold, when a shooting instruction is received, the terminal equipment adjusts the first shooting parameter so that the definition of the target feature area in the shot picture reaches the first definition threshold. If the size of the target feature area in the preview picture does not reach the first size threshold, when a shooting instruction is received, the terminal equipment adjusts the second shooting parameter so that the size of the target feature area in the shot picture reaches the first size threshold.
In practical applications, it is possible that a plurality of feature regions, some of which may be unimportant feature regions (e.g., the face region of a passerby), appear in the preview screen. Therefore, when a plurality of characteristic regions of the preset type shot exist in the preview picture, one characteristic region is selected from the plurality of characteristic regions to serve as the target characteristic region, and the definition and the size of the target characteristic region are only required to be ensured, and the definition and the size of all the characteristic regions are not required to be ensured, so that the complexity of the algorithm is favorably reduced.
For example, the terminal device detects whether a face area of a person exists in the preview screen. As shown in fig. 2, the preview screen of the terminal device has face areas of three characters. The terminal device needs to select a face area of one person as the target feature area from the face areas of the three persons. For example, the terminal apparatus selects the face region 2 as the target feature region. The terminal device determines the definition and size of the face area 2 in the preview screen. The terminal device determines whether the sharpness of the face region 2 in the preview screen reaches a first sharpness threshold value and whether the size of the face region 2 in the preview screen reaches a first size threshold value. If the definition of the face area 2 in the preview picture does not reach the first definition threshold, when a shooting instruction is received, the terminal device adjusts the first shooting parameter so that the definition of the face area 2 in the shot picture reaches the first definition threshold. If the size of the target feature area in the preview picture does not reach the first size threshold, when a shooting instruction is received, the terminal equipment adjusts the second shooting parameter so that the size of the face area 2 in the shot picture reaches the first size threshold.
Alternatively, the target feature region may be a feature region whose feature region is closest to the center position of the preview screen. For example, in fig. 2, if the face area 2 is closest to the center position of the preview screen image, the face area 2 is a target feature area. By implementing this embodiment, the most important feature region can be selected from among the feature regions of a plurality of subjects.
Alternatively, the target feature region may be a feature region with the largest size of the feature region.
Alternatively, the target feature region may be a feature region of a first photographed object, and the first photographed object is a photographed object that appears most frequently in an image stored in the terminal device. Specifically, the terminal device may extract feature information from the feature region, and search for whether a photographic subject corresponding to the feature region exists in an image stored in the terminal device according to the feature information. By implementing this embodiment, the most important feature region can be selected from among the feature regions of a plurality of subjects.
For example, the preview screen includes a face area 1 of a person 1, a face area 2 of a person 2, and a face area 3 of a person 3. The terminal device extracts feature information of the person 1 from the face area 1, and searches whether the person 1 exists in the image stored in the terminal device based on the feature information of the person 1. The terminal device extracts feature information of the person 2 from the face area 2, and searches whether the person 2 exists in the image stored in the terminal device based on the feature information of the person 2. The terminal device extracts feature information of the person 3 from the face area 3, and searches whether the person 3 exists in the image stored in the terminal device based on the feature information of the person 3. If the terminal device finds person 1 in 10 stored images, person 2 in 30 stored images, and person 3 in 20 stored images, the terminal device determines that person 2 is the first photographed object and face area 2 is the target feature area.
103. The terminal device detects whether the definition of the characteristic region in the preview screen reaches a first definition threshold value or not, and whether the size of the characteristic region in the preview screen reaches a first size threshold value or not.
In the embodiment of the application, after determining the definition and the size of the feature region of the preset type shooting object in the preview picture, the terminal device detects whether the definition of the feature region in the preview picture reaches a first definition threshold value, and whether the size of the feature region in the preview picture reaches a first size threshold value.
Wherein the first definition threshold and the first size threshold may be fixed values configured in advance. For example, a low sharpness value or a small size of the feature region may result in a low image quality, and the feature region may not be visible to the user. Therefore, the first sharpness threshold may be set to a large value, and the first size threshold may be set to a suitable size that enables the user to see the characteristic region, thereby improving the picture quality of the characteristic region of the captured image.
Alternatively, the first definition threshold and the first size threshold may also be determined in other ways. How to determine the first sharpness threshold specifically refers to the description of fig. 3 and fig. 4, and how to determine the first size threshold specifically refers to the description of fig. 5, which is not repeated herein.
104. If the definition of the characteristic region in the preview picture does not reach the first definition threshold, when a shooting instruction is received, the terminal equipment adjusts the first shooting parameter so that the definition of the characteristic region in the shot picture reaches the first definition threshold.
105. If the size of the characteristic region in the preview picture does not reach the first size threshold, when a shooting instruction is received, the terminal equipment adjusts the second shooting parameter so that the size of the characteristic region in the shot picture reaches the first size threshold.
For example, the terminal apparatus detects whether or not a face area of a person exists in the preview screen. If the terminal device detects that the face area of the person 1 exists in the preview screen, the terminal device determines the sharpness and size of the face area of the person 1 in the preview screen. If the definition of the face area of the person 1 in the preview picture does not reach the first definition threshold value and the size of the face area of the person 1 in the preview picture does not reach the first size threshold value, the terminal device adjusts the first shooting parameter and the second shooting parameter when receiving the shooting instruction, so that the definition of the face area of the person 1 in the shot picture reaches the first definition threshold value and the size reaches the first size threshold value. Alternatively, the first photographing parameter may be an exposure time. For example, the exposure time may be increased to improve the clarity of the face area of the person 1 in the captured picture. The second photographing parameter may be a focal length. For example, the focal length may be increased to increase the size of the face area of the person 1 in the captured picture.
The characteristic region of the photographic subject is one of the most important parts in the image, and in the method described in fig. 1, the terminal device can detect the definition and size of the characteristic region of the photographic subject of a preset type in the preview screen. If the definition of the characteristic region is low and the size is small, the shooting parameters are adjusted, so that the definition and the size of the characteristic region in the shot picture are improved, and a user can better identify the picture of the characteristic region. Therefore, by implementing the method described in fig. 1, it is advantageous to improve the picture quality of the image. In the method described in fig. 1, the terminal device only detects the definition and size of the characteristic region of the preset type of shooting object in the preview picture, and does not detect the definition and size of other regions, which is beneficial to reducing the power consumption of the terminal device.
Referring to fig. 3, fig. 3 is a schematic flowchart of another shooting control method according to an embodiment of the present disclosure. Specifically, as shown in fig. 3, the shooting control method may include the following steps 301 to 308, where:
301. the terminal equipment detects whether a characteristic area of a preset type shooting object exists in the preview picture.
302. If the characteristic area exists in the preview picture, the terminal equipment determines the definition and the size of the characteristic area in the preview picture.
The specific implementation of step 301 and step 302 is the same as the specific implementation of step 101 and step 102 shown in fig. 1, and specific reference may be made to the specific implementation of step 101 and step 102, which is not described herein again.
303. The terminal device detects the first light intensity value.
The steps 303 to 305 may be performed before the step 302, or may be performed after the step 302, which is not limited in the embodiment of the present application. After the terminal equipment detects that the characteristic area of the preset type shooting object exists in the preview picture, the terminal equipment can detect the first light intensity value.
Optionally, the terminal device may detect the first light intensity value through a light sensor. The first light intensity value is an ambient light intensity value at which the terminal device is located.
304. The terminal equipment obtains a definition threshold value corresponding to the first light intensity value and the pixel value of the terminal equipment according to the corresponding relation among the preset light intensity value, the preset pixel value and the definition threshold value.
305. And the terminal equipment determines the definition threshold corresponding to the first light intensity value and the pixel value of the terminal equipment as a first definition threshold.
In the embodiment of the application, the pixel value is the pixel value of the camera of the terminal equipment. For example, the pixel value of the terminal device may be 1200 ten thousand pixels, 2000 ten thousand pixels, 2500 ten thousand pixels, or the like.
For example, the terminal device may preset a corresponding relationship among the light intensity value, the pixel value, and the sharpness threshold. For example, the correspondence relationship can be as shown in table 2 below. The light intensity value 100 and the pixel value 1000 correspond to the sharpness threshold 1. The light intensity value 200 and the pixel value 1100 correspond to a sharpness threshold of 2. The light intensity value 300 and the pixel value 2000 correspond to the sharpness threshold 3. If the light intensity acquired by the terminal device is 100 lux (Lx) and the pixel value of the terminal device is 1000 ten thousand pixels, the first definition threshold determined by the terminal device is definition threshold 1. Optionally, the larger the light intensity value is, the higher the pixel value is, and the larger the corresponding definition threshold is. For example, the sharpness threshold 3 is greater than the sharpness threshold 2, and the sharpness threshold 2 is greater than the sharpness threshold 1.
TABLE 2
| Light intensity value | Pixel value | Sharpness threshold |
| 100 | 1000 | Definition threshold 1 |
| 200 | 1100 | Definition threshold 2 |
| 300 | 2000 | Definition threshold 3 |
In practical application, if the current environment is dark, the terminal device cannot shoot a clear picture without regard to how to adjust the shooting parameters. If a fixed large first definition threshold value is set, the terminal equipment cannot adjust the first shooting parameter, so that the definition of the characteristic region in the shot image is larger than the first definition threshold value. And if the pixel value of the terminal equipment is low and the first definition threshold is large, the terminal equipment cannot adjust the first shooting parameter, so that the definition of the characteristic region in the shot image is larger than the first definition threshold.
Therefore, by implementing steps 303 to 305, the terminal device can flexibly determine an appropriate first definition threshold according to the current ambient light intensity and the pixel value of the terminal.
306. The terminal device detects whether the definition of the characteristic region in the preview screen reaches a first definition threshold value or not, and whether the size of the characteristic region in the preview screen reaches a first size threshold value or not.
307. If the definition of the characteristic region in the preview picture does not reach the first definition threshold, when a shooting instruction is received, the terminal equipment adjusts the first shooting parameter so that the definition of the characteristic region in the shot picture reaches the first definition threshold.
308. If the size of the characteristic region in the preview picture does not reach the first size threshold, when a shooting instruction is received, the terminal equipment adjusts the second shooting parameter so that the size of the characteristic region in the shot picture reaches the first size threshold.
The specific implementation of steps 306 to 308 is the same as the specific implementation of steps 103 to 105 shown in fig. 1, and specific reference may be made to the specific implementation of steps 103 to 105, which is not described herein again.
Referring to fig. 4, fig. 4 is a schematic flowchart of another shooting control method according to an embodiment of the present disclosure. Specifically, as shown in fig. 4, the photographing control method may include the following steps 401 to 409, in which:
401. the terminal equipment acquires all target images including the preset type shooting objects from the images stored in the terminal equipment.
Alternatively, the first definition threshold may be determined with a preset time period. For example, the first sharpness threshold is determined once every 10 days as a period, i.e., steps 401 to 404 may be performed once every 10 days.
402. And the terminal equipment calculates the definition of the characteristic area of the preset type shooting object in each target image.
403. And the terminal equipment calculates the definition average value of all the target definitions.
404. The terminal device determines the sharpness average as a first sharpness threshold.
For example, the feature region of the preset type of photographic subject is a face region of a person. The terminal device stores 100 images. Among them, the images 1 to 50 include the face area of a person. Thus, the images 1 to 50 are target images. The terminal device acquires images 1 to 50 from the stored 100 images. The terminal device determines the sharpness 1 of the face region of the person in image 1 to the sharpness 50 of the face region of the person in image 50. The terminal device calculates the definition average value of the definition 1-50, and determines the definition average value as a first definition threshold value.
In practical application, the maximum definition values which can be reached by pictures shot by different terminal devices are different. If a fixed first sharpness threshold is set, the first sharpness threshold may exceed the maximum sharpness value of the picture taken by the terminal device. Therefore, if a fixed first sharpness threshold is set, the requirements of all terminal devices will not be met. By implementing steps 401 to 404, a first sharpness threshold suitable for the terminal device can be determined from the history images taken by the terminal device itself. Therefore, by performing steps 401 to 404, the first definition threshold can be flexibly determined.
405. And the terminal equipment detects whether the characteristic area of the preset type shooting object exists in the preview picture.
406. If the characteristic area exists in the preview picture, the terminal equipment determines the definition and the size of the characteristic area in the preview picture.
407. The terminal device detects whether the definition of the characteristic region in the preview screen reaches a first definition threshold value or not, and whether the size of the characteristic region in the preview screen reaches a first size threshold value or not.
408. If the definition of the feature area in the preview picture does not reach the first definition threshold, when a shooting instruction is received, the terminal equipment adjusts the first shooting parameter so that the definition of the feature area in the shot picture reaches the first definition threshold.
409. If the size of the characteristic region in the preview picture does not reach the first size threshold, when a shooting instruction is received, the terminal equipment adjusts the second shooting parameter so that the size of the characteristic region in the shot picture reaches the first size threshold.
The specific implementation of steps 405 to 409 is the same as the specific implementation of steps 101 to 105 shown in fig. 1, and specific reference may be made to the specific implementation of steps 101 to 105, which is not described herein again.
Referring to fig. 5, fig. 5 is a schematic flowchart of another shooting control method according to an embodiment of the present disclosure. Specifically, as shown in fig. 5, the shooting control method may include the following steps 501 to 508, where:
501. the terminal equipment receives an image selection instruction input by a user.
502. The terminal device selects a target image including a preset type of shooting object from images stored in the terminal device according to the image selection instruction.
503. The terminal equipment determines the size of the characteristic area of the preset type shooting object in the selected target image as a first size threshold.
For example, the preset type object is a person, and the feature region is a face region. The terminal device stores 100 images. If the user is satisfied with the size of the face region of the person in the image 1, the user can input an image selection instruction for selecting the image 1. After receiving the image selection instruction, the terminal device selects the image 1, and determines the size of the face area of the person in the image 1 as the first size threshold.
Optionally, the terminal device has a setting button for setting the first size threshold, and after the user clicks the setting button, the terminal device may output all the pictures stored in the terminal device, and the user may select the pictures stored in the terminal device.
In practical applications, different users may have different requirements on the size of the picture to be taken. If a fixed first size threshold is set, the requirements of all users will not be met. By implementing steps 501-503, the user can select a suitable first size threshold according to his own needs. Therefore, by performing steps 501 to 503, the first size threshold can be flexibly determined.
As an optional implementation manner, if the selected target image has a plurality of characteristic regions of a preset type of shooting object, the terminal device marks the plurality of characteristic regions in the target image; the terminal equipment prompts a user to select one characteristic region from the plurality of characteristic regions; the terminal equipment receives a characteristic area selection instruction input by a user through touching a first characteristic area; accordingly, the specific implementation manner of the terminal device determining the size of the feature region of the preset type of photographic subject in the selected target image as the first size threshold is as follows: the terminal device determines the size of the first characteristic region as a first size threshold. Based on this alternative embodiment, the first size threshold can be flexibly determined.
For example, the preset type object is a person, and the feature region is a face region. The terminal device stores 100 images. For example, as shown in FIG. 6, the user has selected image 1. The image 1 includes a face area 1 of a person 1, a face area 2 of a person 2, and a face area 3 of a person 3. After the terminal device selects the image 1, the face area 1 of the person 1, the face area 2 of the person 2, and the face area 3 of the person 3 are marked in the image 1, and prompt information is output in the interface to prompt the user to select one face area from the plurality of face areas. The user can perform a touch operation on the face area to input a selection instruction for selecting the face area. For example, as shown in fig. 6, if the user touches the face area 1, the terminal device selects the face area 1, and determines the size of the face area 1 as the first size threshold.
Optionally, if the selected target image has a plurality of feature areas of the preset type of photographic subject, the terminal device may further select the size of the largest feature area to be determined as the first size threshold, or determine the average value of the sizes of the feature areas of all the preset type of photographic subject in the target image as the first size threshold.
Optionally, if the selected target image has a plurality of feature areas of the preset type of object to be photographed, the terminal device may also randomly select a first feature area, and determine the size of the first feature area as the first size threshold. For example, the plurality of feature areas include a face area 1 and a face area 2, and if the difference between the sizes of the face area 1 and the face area 2 is within a preset range, that is, the sizes of the face area 1 and the face area 2 are not greatly different, the terminal device may randomly select the face area 1 or the face area 2 as the first feature area.
504. And the terminal equipment detects whether the characteristic area of the preset type shooting object exists in the preview picture.
505. If the characteristic area exists in the preview picture, the terminal equipment determines the definition and the size of the characteristic area in the preview picture.
506. The terminal device detects whether the definition of the characteristic region in the preview screen reaches a first definition threshold value or not, and whether the size of the characteristic region in the preview screen reaches a first size threshold value or not.
507. If the definition of the feature area in the preview picture does not reach the first definition threshold, when a shooting instruction is received, the terminal equipment adjusts the first shooting parameter so that the definition of the feature area in the shot picture reaches the first definition threshold.
508. If the size of the characteristic region in the preview picture does not reach the first size threshold, when a shooting instruction is received, the terminal equipment adjusts the second shooting parameter so that the size of the characteristic region in the shot picture reaches the first size threshold.
The specific implementation of steps 504 to 508 is the same as the specific implementation of steps 101 to 105 shown in fig. 1, and specific reference may be made to the specific implementation of steps 101 to 105, which is not described herein again.
Referring to fig. 7, fig. 7 is a schematic flowchart of another shooting control method according to an embodiment of the present disclosure. Specifically, as shown in fig. 7, the shooting control method may include the following steps 701 to 710:
701. and the terminal equipment detects whether the characteristic area of the preset type shooting object exists in the preview picture.
702. If the characteristic area exists in the preview picture, the terminal equipment determines the definition and the size of the characteristic area in the preview picture.
703. The terminal device detects whether the definition of the characteristic region in the preview screen reaches a first definition threshold value or not, and whether the size of the characteristic region in the preview screen reaches a first size threshold value or not.
704. If the definition of the characteristic region in the preview picture does not reach the first definition threshold, when a shooting instruction is received, the terminal equipment adjusts the first shooting parameter so that the definition of the characteristic region in the shot picture reaches the first definition threshold.
705. If the size of the characteristic region in the preview picture does not reach the first size threshold, when a shooting instruction is received, the terminal equipment adjusts the second shooting parameter so that the size of the characteristic region in the shot picture reaches the first size threshold.
The specific implementation of steps 701 to 705 is the same as the specific implementation of steps 101 to 105 shown in fig. 1, and specific reference may be made to the specific implementation of steps 101 to 105, which is not described herein again.
706. And if the characteristic area of the preset type shot object does not exist in the preview picture, the terminal equipment rotates the camera according to the preset rotation speed.
In the embodiment of the application, the terminal equipment is provided with a rotary camera. The terminal equipment can control the camera to rotate leftwards or rightwards.
707. The terminal equipment detects whether a characteristic area of a preset type shot object exists in a preview picture in the camera rotation process.
In the embodiment of the application, the terminal device can continuously detect whether the characteristic area of the preset type of shot object exists in the preview picture in the camera rotation process. Optionally, if the terminal device does not detect that the feature region of the preset type shot exists in the preview picture when the rotation duration of the camera exceeds the preset duration, the terminal device may stop rotating the camera.
708. If the characteristic region of the preset type shot object exists in the preview picture in the camera rotation process, the terminal equipment detects whether the characteristic region of the preset type shot object is in the middle position of the preview picture.
Optionally, if it is detected that the characteristic region of the preset type of object does not exist in the preview picture in the camera rotation process, the camera continues to be rotated, and it is detected whether the characteristic region of the preset type of object exists in the preview picture in the camera rotation process.
709. And if so, stopping rotating the camera by the terminal equipment.
Alternatively, after the terminal device stops rotating the camera, the process may jump to step 702, i.e. determining the definition and size of the feature area in the preview screen.
710. If not, the terminal equipment rotates the camera until the characteristic area of the preset type shot object is in the middle of the preview picture.
Optionally, after the terminal device rotates the camera until the feature area of the preset type shot is located at the middle position of the preview screen, the step 702 may be skipped, that is, the definition and the size of the feature area in the preview screen are determined.
By executing steps 706 to 710, the terminal device can automatically rotate the camera so that the characteristic region of the preset type of shooting object can appear in the preview screen.
The above method embodiments are all illustrations of the shooting control method of the present application, and descriptions of various embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
Please refer to fig. 8, fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application. The terminal device of the embodiment of the present application includes a unit for executing the above-described shooting control method. Specifically, the terminal device 800 of this embodiment may include: a detection unit 801, a determination unit 802, and a shooting unit 803. The detection unit 801 is configured to detect whether a characteristic region of a preset type of shot exists in a preview picture;
a determining unit 802 configured to determine, when the detecting unit 801 detects that the feature region exists in the preview screen, the definition and size of the feature region in the preview screen;
a detecting unit 801, configured to detect whether the definition of the feature region in the preview screen reaches a first definition threshold, and whether the size of the feature region in the preview screen reaches a first size threshold;
a shooting unit 803, configured to, when the detection unit 801 detects that the definition of the feature region in the preview screen does not reach the first definition threshold, adjust the first shooting parameter when receiving a shooting instruction, so that the definition of the feature region in a shot picture reaches the first definition threshold;
a shooting unit 803, configured to, when the detection unit 801 detects that the size of the feature area in the preview screen does not reach the first size threshold, adjust the second shooting parameter so that the size of the feature area in the shot picture reaches the first size threshold when receiving the shooting instruction.
Optionally, the terminal device further includes an obtaining unit, wherein:
the detecting unit 801 is further configured to detect a first light intensity value before the detecting unit 801 detects whether the definition of the feature region in the preview screen reaches a first definition threshold;
the acquisition unit is used for acquiring a definition threshold corresponding to the first light intensity value and the pixel value of the terminal device according to the corresponding relation among the preset light intensity value, the pixel value and the definition threshold;
the determining unit 802 is further configured to determine, as the first definition threshold, a definition threshold corresponding to both the first light intensity value and the pixel value of the terminal device.
Optionally, the terminal device further includes an obtaining unit and a calculating unit, wherein:
an acquiring unit, configured to acquire all target images including a preset type of photographic subject from images stored in the terminal device before the detecting unit 801 detects whether the definition of the feature region in the preview screen reaches the first definition threshold;
a calculating unit for calculating a target definition of the feature region in each target image;
the calculating unit is also used for calculating the definition average value of all the target definitions;
the determining unit 802 is further configured to determine the sharpness average as the first sharpness threshold.
Optionally, the terminal device further includes a receiving unit and a selecting unit, wherein:
a receiving unit configured to receive an image selection instruction input by a user before the detecting unit 801 detects whether the sharpness of the feature region in the preview screen reaches a first sharpness threshold;
the selection unit is used for selecting a target image comprising a preset type shooting object from images stored in the terminal equipment according to the image selection instruction;
the determining unit 802 is further configured to determine a size of a feature region of a preset type of photographic subject in the selected target image as a first size threshold.
Optionally, the terminal device further includes a marking unit and a prompting unit, wherein:
the marking unit is used for marking a plurality of characteristic areas in the target image if the selected target image has a plurality of characteristic areas of the preset type shooting object after the selecting unit selects the target image comprising the preset type shooting object from the images stored in the terminal equipment according to the image selection instruction;
the prompting unit is used for prompting a user to select one characteristic region from the plurality of characteristic regions;
the receiving unit is also used for receiving a characteristic region selection instruction input by a user through touching the first characteristic region;
the specific way for determining the size of the feature region of the preset type of photographic subject in the selected target image as the first size threshold by the determining unit 802 is as follows: the determination unit 802 determines the size of the first feature region as a first size threshold.
Optionally, the determining unit 802 specifically determines the definition of the feature region in the preview screen by: the determining unit 802 determines the sharpness of the feature region in the preview picture according to the brightness value of the feature region in the preview picture and the number of color noise pixel points.
Optionally, a rotation unit and a control unit, wherein:
a rotation unit configured to rotate the camera according to a preset rotation speed when the detection unit 801 detects that the feature region of the preset type of photographic subject does not exist in the preview screen;
the detection unit 801 is further configured to detect whether a characteristic region of a preset type of shot exists in the preview picture in the camera rotation process;
the detection unit 801 is further configured to detect whether the characteristic region of the preset type photographic subject is located in the middle of the preview screen when the characteristic region of the preset type photographic subject is detected to exist in the preview screen in the process of camera rotation;
and a control unit, configured to stop rotating the camera when the detection unit 801 detects that the feature region of the preset type of captured object is at the middle position of the preview screen.
And the rotating unit is further configured to, when the detecting unit 801 detects that the feature area of the preset type photographic subject is not in the middle position of the preview screen, rotate the camera until the feature area of the preset type photographic subject is in the middle position of the preview screen.
Specifically, the terminal device may implement, through the above units, some or all of the steps in the shooting control method in the embodiment shown in fig. 1 to 7. It should be understood that the embodiments of the present application are device embodiments corresponding to method embodiments, and the description of the method embodiments also applies to the embodiments of the present application.
Fig. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 9, the terminal device includes: a processor 901, a memory 902, and a camera 903. Optionally, the terminal device further includes a communication bus, and the communication bus is used for realizing connection communication between the components. The memory 905 may be a high-speed RAM memory or a non-volatile memory (e.g., at least one disk memory). The memory 902 may alternatively be at least one storage device located remotely from the processor 901. Wherein a set of program codes is stored in the memory 902, and the processor 901 calls the program codes stored in the memory 902 for performing the following operations:
detecting whether a characteristic area of a preset type shot exists in a preview picture;
if the characteristic region exists in the preview picture, determining the definition and the size of the characteristic region in the preview picture;
detecting whether the definition of a characteristic region in a preview picture reaches a first definition threshold value or not, and whether the size of the characteristic region in the preview picture reaches a first size threshold value or not;
if the definition of the feature region in the preview picture does not reach the first definition threshold, when a shooting instruction is received, adjusting the first shooting parameter so that the definition of the feature region in the picture shot by the camera 903 reaches the first definition threshold;
if the size of the feature region in the preview screen does not reach the first size threshold, when the shooting instruction is received, the second shooting parameter is adjusted so that the size of the feature region in the picture shot by the camera 903 reaches the first size threshold.
Optionally, before the processor 901 detects whether the definition of the feature region in the preview screen reaches the first definition threshold, the following steps may also be performed:
detecting a first light intensity value;
acquiring a definition threshold corresponding to the first light intensity value and the pixel value of the terminal device according to the corresponding relation among the preset light intensity value, the pixel value and the definition threshold;
and determining definition threshold values corresponding to the first light intensity value and the pixel value of the terminal equipment as a first definition threshold value.
Optionally, before the processor 901 detects whether the definition of the feature region in the preview screen reaches the first definition threshold, the following steps may also be performed:
acquiring all target images including preset type shooting objects from images stored in terminal equipment;
calculating the target definition of the characteristic region in each target image;
calculating the definition average value of all the target definitions;
the sharpness average is determined as a first sharpness threshold.
Optionally, before the processor 901 detects whether the size of the feature region in the preview screen reaches the first size threshold, the following steps may be further performed:
receiving an image selection instruction input by a user;
selecting a target image including a preset type shooting object from images stored in the terminal equipment according to the image selection instruction;
and determining the size of the characteristic region of the preset type shooting object in the selected target image as a first size threshold.
Optionally, after the processor 901 selects a target image including a preset type of shooting object from images stored in the terminal device according to the image selection instruction, the following steps may be further performed:
if the selected target image has a plurality of characteristic areas of the preset type shooting object, marking the plurality of characteristic areas in the target image;
prompting a user to select a feature region from the plurality of feature regions;
receiving a characteristic region selection instruction input by a user through touching a first characteristic region;
the way for determining the size of the feature region of the preset type of object in the selected target image as the first size threshold by the processor 901 is specifically as follows:
the size of the first feature region is determined as a first size threshold.
Optionally, the manner of determining the definition of the feature region in the preview screen by the processor 901 specifically is:
and determining the definition of the characteristic region in the preview picture according to the brightness value of the characteristic region in the preview picture and the number of color noise pixel points.
Optionally, the processor 901 calls the program code stored in the memory 902, and is further configured to perform the following operations:
if the characteristic area of the preset type shot object does not exist in the preview picture, rotating the camera 903 according to a preset rotating speed;
detecting whether a characteristic area of a preset type shot exists in a preview picture in the process of rotating the camera 903;
if the characteristic region of the preset type shot object exists in the preview picture in the rotation process of the camera 903, detecting whether the characteristic region of the preset type shot object is in the middle position of the preview picture;
if so, the rotation of the camera 903 is stopped.
If not, the camera 903 is rotated until the characteristic region of the preset type shot object is in the middle position of the preview picture.
In a specific implementation, the processor 901 and the like described in this embodiment may execute the implementation described in the method embodiment shown in fig. 1 to fig. 7, and may also execute the implementation of each unit described in fig. 8 in this embodiment, which is not described herein again.
An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored, and when executed by a processor, the computer program may implement some or all of the steps in the shooting control method described in the embodiment corresponding to fig. 1 to 7, or may implement the functions of the terminal device in the embodiment shown in fig. 8 or 9 of the present application, which are not described herein again.
Embodiments of the present application also provide a computer program product containing instructions, which when executed on a computer, cause the computer to perform some or all of the steps of the above method.
The computer readable storage medium may be an internal storage unit of the identification device according to any of the foregoing embodiments, for example, a hard disk or a memory of the identification device. The computer readable storage medium may also be an external storage device of the identification device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), etc. provided on the identification device.
In this application, the term "and/or" is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In the embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
The above description is only a part of the embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered by the scope of the present application.
Claims (8)
1. A shooting control method, characterized by comprising:
the terminal equipment detects whether a characteristic area of a preset type shot exists in a preview picture;
if the characteristic region exists in the preview picture, the terminal equipment determines the definition and the size of the characteristic region in the preview picture;
the method comprises the steps that the terminal equipment detects a first light intensity value, a definition threshold value corresponding to the first light intensity value and a pixel value of the terminal equipment is obtained according to the corresponding relation among a preset light intensity value, the pixel value and the definition threshold value, and the definition threshold value corresponding to the first light intensity value and the pixel value of the terminal equipment is determined as a first definition threshold value; or the terminal equipment acquires all target images including the preset type shooting objects from the images stored in the terminal equipment, calculates the target definition of the characteristic region in each target image, calculates the definition average value of all the target definitions, and determines the definition average value as a first definition threshold value;
the terminal equipment detects whether the definition of the characteristic region in the preview picture reaches a first definition threshold value or not, and whether the size of the characteristic region in the preview picture reaches a first size threshold value or not;
if the definition of the characteristic region in the preview picture does not reach the first definition threshold, when a shooting instruction is received, the terminal equipment adjusts a first shooting parameter so that the definition of the characteristic region in a shot picture reaches the first definition threshold;
if the size of the characteristic region in the preview picture does not reach the first size threshold, when a shooting instruction is received, the terminal equipment adjusts a second shooting parameter so that the size of the characteristic region in the shot picture reaches the first size threshold.
2. The method according to claim 1, wherein before the terminal device detects whether the size of the feature area in the preview screen reaches a first size threshold, the method further comprises:
the terminal equipment receives an image selection instruction input by a user;
the terminal equipment selects a target image comprising the preset type shooting object from the images stored in the terminal equipment according to the image selection instruction;
and the terminal equipment determines the size of the characteristic region of the preset type shooting object in the selected target image as a first size threshold.
3. The method according to claim 2, wherein after the terminal device selects a target image including the preset type of photographic subject from the images stored in the terminal device according to the image selection instruction, the method further comprises:
if the selected target image has a plurality of characteristic areas of the preset type shooting objects, the terminal equipment marks the plurality of characteristic areas in the target image;
the terminal equipment prompts a user to select one characteristic region from the plurality of characteristic regions;
the terminal equipment receives a characteristic area selection instruction input by a user through touching a first characteristic area;
the terminal equipment determines the size of the characteristic region of the preset type shooting object in the selected target image as a first size threshold, and the method comprises the following steps:
and the terminal equipment determines the size of the first characteristic region as a first size threshold.
4. The method according to any one of claims 1 to 3, wherein the terminal device determines the definition of the feature area in the preview screen, and comprises the following steps:
and the terminal equipment determines the definition of the characteristic region in the preview picture according to the brightness value of the characteristic region in the preview picture and the number of color noise pixel points.
5. The method according to any one of claims 1 to 3, further comprising:
if the characteristic area of the preset type shot object does not exist in the preview picture, the terminal equipment rotates a camera according to a preset rotation speed;
the terminal equipment detects whether a characteristic area of the preset type shot exists in the preview picture in the camera rotation process;
if the characteristic region of the preset type shot object exists in the preview picture in the camera rotation process, the terminal equipment detects whether the characteristic region of the preset type shot object is in the middle position of the preview picture or not;
if the terminal equipment is in the middle position of the preview picture, stopping rotating the camera;
and if the characteristic area is not in the middle position of the preview picture, the terminal equipment rotates the camera until the characteristic area of the preset type shot object is in the middle position of the preview picture.
6. A terminal device, characterized in that it comprises means for performing the method of any of claims 1-5.
7. A terminal device, characterized by comprising a processor, a memory and a camera, the processor, the memory and the camera being interconnected, wherein the memory is used for storing a computer program, the computer program comprising program instructions, the processor being configured to invoke the program instructions to execute the method according to any one of claims 1 to 5.
8. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program comprising program instructions that, when executed by a processor, cause the processor to carry out the method according to any one of claims 1-5.
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| CN110335216B (en) * | 2019-07-09 | 2021-11-30 | Oppo广东移动通信有限公司 | Image processing method, image processing apparatus, terminal device, and readable storage medium |
| CN110784682B (en) * | 2019-09-27 | 2021-11-09 | 深圳市海雀科技有限公司 | Video processing method and device and electronic equipment |
| CN110989410A (en) * | 2019-12-12 | 2020-04-10 | 上海邦芯物联网科技有限公司 | Data management system and method for flexible pipeline robot |
| CN111324763B (en) * | 2020-02-07 | 2023-08-15 | Tcl移动通信科技（宁波）有限公司 | Photo preview method and system, storage medium and terminal equipment thereof |
| CN111263072A (en) * | 2020-02-26 | 2020-06-09 | Oppo广东移动通信有限公司 | Shooting control method and device and computer readable storage medium |
| CN111698426B (en) * | 2020-06-23 | 2021-08-03 | 广东小天才科技有限公司 | Test question shooting method and device, electronic equipment and storage medium |
| CN115346282A (en) * | 2022-06-28 | 2022-11-15 | 广州番禺电缆集团有限公司 | Cable inspection identifier recognition device and method, electronic equipment and storage medium |
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