WO2018076167A1

WO2018076167A1 - Screen brightness adjustment method applicable to unmanned aerial vehicle control side, and unmanned aerial vehicle control side

Info

Publication number: WO2018076167A1
Application number: PCT/CN2016/103200
Authority: WO
Inventors: 杨小虎; 王建民; 何忠平
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2016-10-25
Filing date: 2016-10-25
Publication date: 2018-05-03
Also published as: CN107077830B; CN107077830A

Abstract

A screen brightness adjustment method applicable to an unmanned aerial vehicle control side, and an unmanned aerial vehicle control side. The method comprises: acquiring image information photographed by an unmanned aerial vehicle and a light intensity of an environment where an unmanned aerial vehicle control side (70) is located (S101); according to the light intensity of the environment where the unmanned aerial vehicle control side (70) is located, adjusting the brightness of a display screen (71) of the unmanned aerial vehicle control side (70) (S102). By acquiring a light intensity of an environment where an unmanned aerial vehicle control side (70) is located, and adjusting the brightness of a display screen (71) of the unmanned aerial vehicle control side (70) in different manners according to different light intensities of the environment where the unmanned aerial vehicle control side (70) is located, the problem that a video picture photographed by an unmanned aerial vehicle at night cannot be clearly displayed on the display screen (71) can be prevented, and the problem that in the case of direct sunlight when outdoor work is performed, the contents displayed by the display screen (71) of the unmanned aerial vehicle control side (70) is difficult to see can be prevented.

Description

Screen brightness adjustment method for drone control terminal and drone control terminal

Technical field

The embodiment of the invention relates to the field of drones, in particular to a screen brightness adjustment method suitable for the control end of the drone and a control end of the drone.

Background technique

In the prior art, the user controls the drone through a ground station, which may be a remote controller, a smart terminal, a smart wearable device, or the like. In a drone aerial photography system with a high-definition real-time video image transmission system, the remote controller usually needs to configure a display device to display the video of the on-board camera in real time, and realize the first person view of the aircraft (First Person View, referred to as FPV) manipulation.

In the prior art, there are three implementations of the remote controller configuration display device: 1) the remote controller and the smart terminal such as a mobile phone, a tablet computer, etc. are connected in a wired or wireless manner, and the smart terminal is used as a display device of the remote controller. 2) The remote controller and the external display are connected through a High Definition Multimedia Interface (HDMI) or a Serial Component Serial Interface (SDI). 3) The remote control is equipped with a display, that is, an integrated remote control with a display.

However, the aerial photography operation of the drone is usually an outdoor operation. The user needs to operate the drone outdoors. In the environment with strong outdoor sunlight, especially in direct sunlight, the display content is difficult to be seen. In addition, the video picture taken by the drone at night cannot be clearly displayed on the display.

Summary of the invention

The embodiment of the invention provides a screen brightness adjustment method suitable for the control end of the drone and a control end of the drone to improve the brightness of the display screen of the control end of the drone.

An aspect of the embodiments of the present invention provides a screen brightness adjustment method suitable for a control end of a drone, including:

Obtain image information captured by the drone and the light intensity of the environment in which the drone's control terminal is located degree;

Adjusting the brightness of the display screen of the control end of the drone according to the illumination intensity of the environment in which the control end of the drone is located.

Another aspect of the embodiments of the present invention provides a drone control terminal, including: a display screen, one or more processors;

The one or more processors work alone or in concert;

The display screen is in communication with the one or more processors;

The one or more processors are used to:

Obtain image information captured by the drone and the light intensity of the environment in which the drone is controlled;

Another aspect of the embodiments of the present invention provides a drone control terminal, including:

Obtaining a module for acquiring image information captured by the drone and the light intensity of the environment in which the drone is controlled;

The brightness adjustment module is configured to adjust the brightness of the display screen of the control end of the drone according to the illumination intensity of the environment in which the control end of the drone is located.

The method for adjusting the brightness of the screen applied to the control end of the drone and the control end of the drone are provided by acquiring the illumination intensity of the environment where the control end of the drone is located, and according to the environment of the environment where the control end of the drone is located Different strength, determine the specific environment of the drone control end, and adjust the brightness of the display of the drone control end according to the different environment of the drone control end, when the remote control and When the drone is in the night environment, when the drone transmits the image information of the aerial camera to the remote controller, the remote controller can perform image enhancement processing on the image information, increase the brightness of the dark area in the image information, and weaken the image information. The brightness of the bright area is used to improve the display brightness of the image information in the display screen, thereby avoiding the problem that the video picture taken by the drone at night cannot be clearly displayed on the display screen. In addition, when the remote controller is in a strong light environment, the remote controller can increase the backlight brightness of the display screen, and at the same time perform image enhancement processing on the image information captured by the drone, that is, through combination of display content enhancement and backlight control. The method is to improve the display brightness of the display screen, and avoid the problem that the display content of the display screen of the drone control terminal is difficult to be seen when the sun is directly exposed during outdoor work.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings.

1 is a flowchart of a method for adjusting a screen brightness applied to a control end of a drone according to an embodiment of the present invention;

2 is a flowchart of a method for adjusting a screen brightness applied to a control end of a drone according to another embodiment of the present invention;

3 is a flowchart of a method for adjusting a screen brightness applied to a control end of a drone according to another embodiment of the present invention;

4 is a flowchart of a method for adjusting a screen brightness applied to a control end of a drone according to another embodiment of the present invention;

FIG. 5 is a schematic diagram of a Gamma curve according to another embodiment of the present invention; FIG.

FIG. 6 is a schematic diagram of a Gamma curve according to another embodiment of the present invention; FIG.

7 is a structural diagram of a control end of a drone according to an embodiment of the present invention;

8 is a structural diagram of a control end of a drone according to an embodiment of the present invention;

FIG. 9 is a structural diagram of a control end of a drone according to another embodiment of the present invention.

Reference mark:

51-Gamma value equal to 1 slash 52-Gamma value less than 1 curve

A curve consisting of a curve with a 62-Gamma value of less than 1 and a curve with a Gamma value greater than 1.

70-UAV Console 71-Display 72-One or more processors

73-Backlight Module 74-Receiver 75-Photosensitive Device

80-UAV control terminal 81-Acquisition module 82-Brightness adjustment module

821-Backlight adjustment unit 822-Image enhancement unit 83-determination module

detailed description

The technical solutions in the embodiments of the present invention will be clearly described in conjunction with the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not An embodiment of the department. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be noted that when a component is referred to as being "fixed" to another component, it can be directly on the other component or the component can be present. When a component is considered to "connect" another component, it can be directly connected to another component or possibly a central component.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. The terminology used in the description of the present invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and/or" used herein includes any and all combinations of one or more of the associated listed items.

Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The features of the embodiments and examples described below can be combined with each other without conflict.

Embodiments of the present invention provide a screen brightness adjustment method suitable for a control end of a drone. FIG. 1 is a flowchart of a method for adjusting a screen brightness applied to a control end of a drone according to an embodiment of the present invention. As shown in FIG. 1, the method in this embodiment may include:

Step S101: Obtain image information captured by the drone and the illumination intensity of the environment where the control end of the drone is located.

The execution body of this embodiment may be a drone control end for controlling the drone, and the drone control end may include but is not limited to head mounted display glasses (VR glasses, VR helmets, etc.), mobile phones, and remote controls. (such as a remote control with a display), a smart bracelet, a tablet, etc. In this embodiment, a remote control with a display screen, that is, an integrated remote controller with a display screen, is taken as an example to introduce the principle of the screen brightness adjustment method applicable to the control end of the drone. The display on the remote control can be a liquid crystal display (LCD) screen.

The integrated remote controller is provided with a communication module, and the communication module can be used for receiving image information sent by the drone, and the image information can be image information of the aerial photograph of the photographing device carried by the drone, and the image information can be a picture or a video. Information such as images.

In addition, the remote controller is also provided with a photosensitive device, and the photosensitive device can be disposed on the display screen of the remote controller, or can be set on the remote controller except the display screen, and the photosensitive device is set. The advantage on the display of the remote control is that the illumination intensity of the environment in which the remote control is sensed by the photosensitive device is the intensity of the illumination received by the display of the remote control.

Step S102: Adjust the brightness of the display screen of the control end of the drone according to the illumination intensity of the environment where the control end of the drone is located.

Since the remote controller is in different environments, such as a strong light environment, a normal light environment, or a night environment, the intensity of the light received by the display screen is different, and the embodiment may be based on the illumination of the environment where the remote controller is sensed by the photosensitive device. The intensity determines the environment in which the remote controller is located. For example, when the light intensity of the environment in which the remote controller is sensed by the photosensitive device is less than a certain threshold, it can be determined that the remote controller is in a night environment; if the remote device sensed by the photosensitive device The illumination intensity of the environment is greater than another threshold, and the remote controller is determined to be in a strong light environment; if the illumination intensity of the environment in which the remote controller is sensed by the photosensitive device is between the above two thresholds, it can be determined that the remote controller is in normal light. surroundings.

In this embodiment, when the remote controller is in different environments, the remote controller can adjust the brightness of the display screen in different manners, specifically, adjusting the brightness of the display screen by adjusting the brightness of the backlight of the display screen, or The image information displayed on the display screen is enhanced to improve the display brightness of the image information in the display screen, and the display brightness of the display screen can be improved by combining the display content enhancement and the backlight control.

For example, when the remote control and the drone are in the night environment at the same time, the video taken by the camera of the drone at night, the brightness of the entire video image is dark, and when the drone transmits the video image to the remote controller, the remote controller The video image may be subjected to image enhancement processing to increase the brightness of the dark area in the video image and to reduce the brightness of the bright area in the video image to improve the display brightness of the video image in the display screen.

In addition, when the remote controller is in a normal light environment such as an indoor environment, the remote controller can increase the backlight brightness of its display screen.

In addition, when the remote controller is in a strong light environment, the remote controller can increase the backlight brightness of the display screen, and at the same time perform image enhancement processing on the image information captured by the drone, that is, through combination of display content enhancement and backlight control. Ways to improve the display brightness of the display.

In this embodiment, the illumination intensity of the environment in which the control end of the drone is located is obtained, and the specific environment of the control end of the drone is determined according to the difference of the illumination intensity of the environment in which the control end of the drone is located, and according to the drone The control environment is different, and the unmanned aircraft is controlled in different ways. The brightness of the display screen of the system is adjusted. When the remote controller and the drone are simultaneously in the night environment, when the drone transmits the image information of the aerial camera to the remote controller, the remote controller can perform image enhancement processing on the image information, adding the The brightness of the dark area in the image information, the brightness of the bright area in the image information is weakened, so as to improve the display brightness of the image information in the display screen, and the video picture taken by the drone at night is not clearly displayed on the display screen. problem. In addition, when the remote controller is in a strong light environment, the remote controller can increase the backlight brightness of the display screen, and at the same time perform image enhancement processing on the image information captured by the drone, that is, through combination of display content enhancement and backlight control. The method is to improve the display brightness of the display screen, and avoid the problem that the display content of the display screen of the drone control terminal is difficult to be seen when the sun is directly exposed during outdoor work.

Embodiments of the present invention provide a screen brightness adjustment method suitable for a control end of a drone. FIG. 2 is a flowchart of a method for adjusting a screen brightness applied to a control end of a drone according to another embodiment of the present invention. As shown in FIG. 2, the method in this embodiment may include:

Step S201: Obtain image information captured by the drone and the illumination intensity of the environment where the control end of the drone is located.

Step S201 is consistent with step S101, and the specific method is not described herein again.

Step S202: Determine, according to the illumination intensity, that the display screen of the control end of the drone is in a strong light environment, a normal light environment, or a night environment.

Specifically, if the illumination intensity is less than the first threshold, determining that the display screen of the control end of the UAV is in a night environment; if the illumination intensity is greater than the second threshold, determining that the display screen of the control end of the UAV is In a strong light environment, the second threshold is greater than the first threshold; if the illumination intensity is between the first threshold and the second threshold, determining that the display of the drone control terminal is normal Light environment.

Step S203: Adjust the brightness of the display screen of the control end of the drone according to the illumination intensity of the environment where the control end of the drone is located.

In this embodiment, when the remote controller is in different environments, the remote controller can adjust the brightness of the display screen in different ways as follows:

If the display screen of the drone control end is in a normal light environment, adjust the backlight brightness of the display screen of the drone control end.

If the display screen of the drone control end is in a strong light environment, the drone is photographed The image information is subjected to image enhancement processing.

If the display screen of the drone control end is in a night environment, and the image information is that the drone is photographed in the night environment, image enhancement processing is performed on the image information captured by the drone.

In this embodiment, the UAV control end adjusts the brightness of the display screen of the UAV control end, and includes at least one of: adjusting a backlight brightness of the display screen of the UAV control end;

Image enhancement processing is performed on the image information captured by the drone.

Among them, adjusting the backlight of the display can directly affect the display brightness of the display. In addition, the backlight determines the maximum contrast of the display brightness (displays the full white screen and the ratio of the screen brightness of the all black screen). In addition, the size of the backlight is also directly Affects the power consumption overhead of the drone control terminal. The backlight brightness can be any value between 0 and 255. Since the minimum brightness of the display screen is usually 20, the backlight brightness can be set to any value between 20 and 255.

In addition, in this embodiment, when the display screen of the control end of the drone is in a strong light environment or a night environment, the backlight brightness of the display screen of the drone control end is a preset value. The preset value may be a maximum value of the backlight brightness of the display screen of the drone control end. For example, when the display of the drone control terminal is in a strong light environment, the backlight brightness of the display of the drone control end can be set to a maximum value, or the backlight brightness of the display screen of the drone control end is set to be smaller than The value of the maximum value to reduce the power consumption of the drone's console while maintaining proper screen display brightness.

In this embodiment, according to the intensity of the illumination received by the display screen of the control end of the drone, different environments of the control end of the drone, such as a strong light environment, a normal light environment or a night environment, are determined, and according to the control end of the drone In different environments, the brightness of the display screen of the drone control terminal is adjusted in different ways. Specifically, the brightness of the display screen can be adjusted by adjusting the backlight brightness of the display screen, or the image information displayed on the display screen can be enhanced. Processing to improve the display brightness of the image information in the display screen, and also can improve the display brightness of the display screen by combining the content enhancement and the backlight control, and improve the brightness of the display screen of the drone control end. Flexibility.

Embodiments of the present invention provide a screen brightness adjustment method suitable for a control end of a drone. FIG. 3 is a flowchart of a screen brightness adjustment method applicable to a control end of a drone according to another embodiment of the present invention; FIG. 4 is a flowchart of a screen brightness adjustment method applicable to a control end of a drone according to another embodiment of the present invention; FIG. 5 is a schematic diagram of a Gamma curve according to another embodiment of the present invention; FIG. 6 is a schematic diagram of a Gamma curve according to another embodiment of the present invention. According to the above embodiment, when the display screen of the control end of the drone is in a strong light environment or a nighttime environment, image enhancement processing is required on the image information captured by the drone, that is, the display content is enhanced, and the image enhancement mode may be There are two ways to do this:

The first method includes the steps shown in Figure 3:

Step 31: processing the image information captured by the drone by using a histogram equalization algorithm;

Step 32: Adjust the gradation of the image information captured by the drone.

In the first method, the image information captured by the drone may be subjected to image enhancement processing using only the method of step 31, or the image information captured by the drone may be image enhanced by using only the method of step 32. At the same time, the image information captured by the drone is subjected to image enhancement processing by the methods of

steps

31 and 32. At the same time, when the image information captured by the drone is image-enhanced by the method of step 31 and step 32, the same photo taken by the drone can be processed by the methods of step 31 and step 32, respectively. The order of execution of 31 and step 32.

The second method includes the steps shown in Figure 4:

Step 41: Using a histogram equalization algorithm, processing image information captured by the drone to obtain image enhanced image information;

Step 42: Adjust the gradation of the image enhanced image information.

Compared with the first method, the second method needs to use the histogram equalization algorithm and the grayscale adjustment method to perform image enhancement processing on the image information captured by the drone, but the histogram equalization algorithm and the grayscale adjustment have a sequence. For the same photo taken by the drone, the drone control end first uses a histogram equalization algorithm to process the image information captured by the drone to obtain image enhanced image information, and then enhance the image. The gray scale of the information is adjusted.

In this embodiment, step 31 or step 41: using a histogram equalization algorithm, the image information captured by the drone may be processed by: The equation is converted to the YUV format; in the YUV color space, the luminance component Y is subjected to histogram equalization processing to increase the global image contrast and to better distribute the luminance on the histogram.

Specifically, the drone control terminal can input the video code stream into the decoder for decoding, and the decoded code stream format is YUV420 format. In the YUV color space, the luminance component Y is subjected to histogram equalization processing to increase the global image contrast, so that Brightness is better distributed over the histogram.

The principle of the histogram equalization algorithm is as follows:

For example, a discrete grayscale image {x}, n _i represents the number of occurrences of a pixel point having a gray value of i, and the probability of occurrence of a pixel point having a gray value of i in the grayscale image is as shown in the following formula (1). :

Where L represents all the gray levels in the grayscale image (usually 256), n represents the number of all pixels in the grayscale image, p _x (i), 0 _≤ i ≤ L can represent the pixel value A histogram of the image of i, in this embodiment, p _x (i), 0 _≤ i ≤ L can be normalized to [0, 1].

In addition, this embodiment defines the cumulative distribution function of p _x (i) as the formula (2):

A cumulative normalized histogram of the grayscale image can be obtained according to formula (2).

This embodiment provides a transform of the form y=T(x). For each gray value x in the original image, a y can be obtained according to y=T(x), so that the cumulative probability function of y can be Linearize over all values, and the conversion formula is defined as equation (3):

Cdf _y (i)=iK (3)

Where K represents a constant. According to the nature of the cumulative probability function, there is an inverse change, defined as equation (4):

Cdf _y (y')=cdf _y (T(k))=cdf _x (k) (4)

Where k belongs to the interval [0, L). According to formula (4), T maps different levels to the {0..1} field. In order to map these values back to their original fields, a simple transformation needs to be applied to the results using the following formula (5):

y'=y*(max{x}-min{x})+min{x} (5)

In addition, in the embodiment, step 32 or step 42: adjusting the gradation of the image information may be implemented by adjusting the Gamma curve of the display screen of the drone control end. Adjusting the Gamma curve of the LCD display adjusts the brightness and contrast of the image. When the image contrast is increased, the bright area of the image is brightened and the dark area is darkened; when the contrast of the image is weakened, the darkness of the image is darkened. The area is brightened and the bright area is darkened. In order to keep the overall color of the image unchanged, the adjustment range of the Gamma curve can be determined according to the Gamma characteristics of the LCD display.

According to the characteristics of the Gamma curve, the curve with the gamma value greater than 1 is below the slant line with the gamma value equal to 1, and the image is adjusted by the curve with the gamma value greater than 1 to make the image darker; the curve with the gamma value less than 1 is at the gamma value. Above the slash equal to 1, the image information is adjusted using a curve with a Gamma value of less than one to make the image brighter.

As shown in FIG. 5, a straight line, that is, a diagonal line 51 indicates that the gamma value is equal to 1, and a curve 52 indicates a curve in which the gamma value is less than one. When the display screen of the drone control terminal is in a strong light environment, the curve 52 with a Gamma value of less than 1 is used to increase the overall gray level of the image, thereby increasing the overall brightness of the image.

As shown in FIG. 6, a straight line, that is, a diagonal line 51 indicates that the gamma value is equal to 1, and the curve 62 is composed of a curve having a Gamma value of less than 1 and a curve having a Gamma value of more than 1. When the display screen of the drone control terminal is in the night environment, and the image information is taken by the drone in the night environment, the curve 62 is used to adjust the gray level of the image information, as shown in FIG. 6, the gray value is The smaller part indicates the dark area of the image, the part with the larger gray value indicates the bright area of the image; the dark area of the image information is adjusted by the curve with the Gamma value less than 1, and the bright area of the image information is adjusted by the curve with the Gamma value greater than 1. . Brightens the dark areas of the image and darkens the bright areas. For images taken at night, most of the image details are in the dark area, and the contrast of the image display in the dark area can be improved by pulling up the brightness of the dark area. For the image taken at night, the proportion of the bright area is small, so the brightness of the bright area can be moderately compressed.

In this embodiment, the image information of the aerial image of the drone is enhanced by the histogram equalization algorithm, and the brightness and contrast of the image displayed on the LCD screen are adjusted by adjusting the Gamma curve of the LCD display, and the backlight of the display screen is fixed. When the value is used, the display brightness of the image information in the display screen is further increased; when the display screen of the control end of the drone is in a strong light environment, the overall brightness of the image is increased by using the gama curve of the overall brightness enhancement, thereby increasing the overall brightness of the image and avoiding In the case of direct sunlight during outdoor work, the display on the control panel of the drone is difficult to see; when the display on the control side of the drone is in the night environment, the image is adjusted with a curve with a Gamma value less than 1. In the dark area of the information, the curve with the Gamma value greater than 1 is used to adjust the bright area of the image information, the dark area of the image is brightened, and the bright area is darkened, so that the video picture taken by the drone at night cannot be clearly displayed on the display screen. The problem.

Embodiments of the present invention provide a drone control terminal. FIG. 7 is a structural diagram of a control end of a drone according to an embodiment of the present invention. As shown in FIG. 7, the drone control terminal 70 includes a display screen 71, one or more processors 72; and one or more processors 72 are separate. Or working in conjunction; the display 71 is in communication with one or more processors 72; one or more processors 72 are configured to: acquire image information captured by the drone, and the illumination intensity of the environment in which the drone control terminal is located; Adjusting the brightness of the display screen of the control end of the drone according to the illumination intensity of the environment in which the control end of the drone is located.

In addition, the UAV control terminal 70 further includes: a backlight module 73 communicatively coupled to one or more processors 72, and the one or more processors 72 are configured to: adjust the UAV by controlling the backlight module 73 The backlight brightness of the display screen 71 of the control terminal; image enhancement processing is performed on the image information captured by the drone.

In addition, the drone control terminal 70 further includes: a receiver 74 communicatively coupled to the one or more processors 72 for receiving image information transmitted by the drone and transmitting the image information to the One or more processors 72; and a photosensitive device 75 communicatively coupled to one or more processors 72 for sensing the illumination intensity of the environment in which the control end of the drone is located, and The strength is transmitted to the one or more processors 72.

The specific principles and implementation manners of the UAV control terminal provided by the embodiment of the present invention are similar to the embodiment shown in FIG. 1 and will not be further described herein.

In this embodiment, the illumination intensity of the environment in which the control end of the drone is located is obtained, and the specific environment of the control end of the drone is determined according to the difference of the illumination intensity of the environment in which the control end of the drone is located, and according to the drone The brightness of the display of the control end of the drone is adjusted in different ways. When the remote control and the drone are in the night environment, the drone transmits the image information of the aerial camera to the remote controller. The remote controller can perform image enhancement processing on the image information, increase the brightness of the dark area in the image information, and reduce the brightness of the bright area in the image information, so as to improve the display brightness of the image information in the display screen, thereby avoiding no The video picture taken by the HMI at night cannot be clearly displayed on the display. In addition, when the remote controller is in a strong light environment, the remote controller can increase the backlight brightness of the display screen, and at the same time perform image enhancement processing on the image information captured by the drone, that is, through combination of display content enhancement and backlight control. The method is to improve the display brightness of the display screen, and avoid the problem that the display content of the display screen of the drone control terminal is difficult to be seen when the sun is directly exposed during outdoor work.

Embodiments of the present invention provide a drone control terminal. Based on the technical solution provided by the embodiment shown in FIG. 7 , the one or more processors 72 are configured to: determine, according to the illumination intensity, that the display screen of the control end of the drone is in a strong light environment, a normal light environment, or Night environment.

Specifically, if the illumination intensity is less than the first threshold, the one or more processors 72 determine that the display screen of the UAV control end is in a night environment; if the illumination intensity is greater than the second threshold, The one or more processors 72 determine that the display screen of the drone control end is in a strong light environment, the second threshold is greater than the first threshold; if the illumination intensity is between the first threshold and the first Between the two thresholds, the one or more processors 72 determine that the display of the drone control terminal is in a normal light environment.

When the one or more processors 72 determine that the display screen of the drone control terminal is in a normal light environment, the one or more processors 72 adjust the drone control by controlling the backlight module The brightness of the backlight of the display at the end.

When the one or more processors 72 determine that the display screen of the drone control terminal is in a strong light environment, the one or more processors 72 are configured to: image an image information captured by the drone Enhanced processing.

When the one or more processors 72 determine that the display screen of the drone control terminal is in a night environment, and the image information is that the drone is photographed in the nighttime environment, the one or more The processor 72 is configured to perform image enhancement processing on the image information captured by the drone.

The specific principles and implementation manners of the UAV control terminal provided by the embodiment of the present invention are similar to the embodiment shown in FIG. 2, and details are not described herein again.

Embodiments of the present invention provide a drone control terminal. On the basis of the technical solution provided by the embodiment shown in FIG. 7, the one or more processors 72 are configured to: process the image information captured by the drone by using a histogram equalization algorithm; The gradation of the image information captured by the human machine is adjusted.

Alternatively, the one or more processors 72 are configured to: process image information captured by the drone to obtain image enhanced image information by using a histogram equalization algorithm; and gray image information enhanced by the image Degree adjustment.

The one or more processors 72 adopt a histogram equalization algorithm, and the image information captured by the drone may be processed by converting the format of the image information into a YUV format; in the YUV color space, The luminance component Y performs histogram equalization processing.

The one or more processors 72 adjust the gray level of the image information by adjusting the Gamma curve of the display screen of the UAV control end.

Specifically, when the display screen of the control end of the drone is in a strong light environment, the one or more processors 72 adjust the gray level of the image enhanced image information by using a curve with a Gamma value less than 1; When the display screen of the drone control end is in a night environment, and the image information is taken by the drone in the night environment, the one or more processors 72 adjust the curve with a curve having a Gamma value of less than one. A dark area of image enhanced image information, a bright area of the image enhanced image information is adjusted using a curve having a Gamma value greater than one.

In addition, in other embodiments, when the display screen of the control end of the drone is in a strong light environment or a nighttime environment, the backlight brightness of the display screen 71 of the drone control end is a preset value. The preset value may be a maximum value of the backlight brightness of the display screen of the control end of the drone.

The specific principles and implementation manners of the UAV control terminal provided by the embodiment of the present invention are similar to the embodiment shown in FIG. 3, and details are not described herein again.

In this embodiment, the image information of the aerial image of the drone is enhanced by the histogram equalization algorithm, and the brightness and contrast of the image displayed on the LCD screen are adjusted by adjusting the Gamma curve of the LCD display, and the backlight of the display screen is fixed. When the value is used, the display brightness of the image information in the display screen is further increased; when the display screen of the control end of the drone is in a strong light environment, the overall brightness of the image is increased by using the gama curve of the overall brightness enhancement, thereby increasing the overall brightness of the image and avoiding In the case of direct sunlight during outdoor work, the display screen of the drone control terminal is displayed. The content of the drone is difficult to be seen; when the display of the drone control terminal is in the night environment, the dark area of the image information is adjusted by the curve with the Gamma value less than 1, and the bright area of the image information is adjusted by the curve with the Gamma value greater than 1. The dark area of the image is brightened, and the bright area is darkened, which avoids the problem that the video picture taken by the drone at night cannot be clearly displayed on the display screen.

Embodiments of the present invention provide a drone control terminal. 8 is a structural diagram of a control end of a drone according to an embodiment of the present invention. As shown in FIG. 8, the drone control terminal 80 includes an acquisition module 81 and a brightness adjustment module 82. The acquisition module 81 is configured to acquire a drone. The captured image information, and the illumination intensity of the environment in which the control end of the drone is located; the brightness adjustment module 82 is configured to display the display screen of the control end of the drone according to the illumination intensity of the environment in which the control end of the drone is located The brightness is adjusted.

Embodiments of the present invention provide a drone control terminal. FIG. 9 is a structural diagram of a control terminal of a drone according to another embodiment of the present invention. As shown in FIG. 9, the brightness adjustment module 82 specifically includes a backlight adjustment unit 821 and an image enhancement unit. 822, the backlight adjustment unit 821 is configured to adjust the backlight brightness of the display screen of the control end of the drone; the image enhancement unit 822 is configured to perform image enhancement processing on image information captured by the drone.

In addition, the drone control terminal 80 further includes a determining module 83. After the determining module 83 is configured to acquire the light intensity of the environment in which the control terminal of the drone is located, the determining unit 83 determines the control end of the drone according to the light intensity. The display is in a strong light environment, a normal light environment, or a nighttime environment.

The determining module 83 is specifically configured to: if the light intensity is less than the first threshold, determine that the display screen of the control end of the drone is in a night environment; if the light intensity is greater than the second threshold, determine the drone control The display screen of the terminal is in a strong light environment, and the second threshold is greater than the first threshold; if the illumination intensity is between the first threshold and the second threshold, determining the control end of the drone The display is in a normal light environment.

When the determining module determines that the display screen of the control end of the drone is in a normal light environment, the backlight adjusting unit 821 adjusts the backlight brightness of the display screen of the control end of the drone.

When the determining module determines that the display screen of the drone control end is in a strong light environment, the image enhancement unit 822 performs image enhancement processing on the image information captured by the drone.

When the determining module determines that the display screen of the control end of the drone is in a night environment, and the image information is captured by the drone in the night environment, the image enhancement unit 822 pairs the drone The captured image information is subjected to image enhancement processing.

The image enhancement unit 822 can perform image enhancement processing on the image information captured by the drone by using a histogram equalization algorithm to process image information captured by the drone; or/and The gradation of the image information captured by the drone is adjusted.

Another achievable manner for the image enhancement unit 822 to perform image enhancement processing on the image information captured by the drone is to process the image information captured by the drone by using a histogram equalization algorithm to obtain image enhancement. Image information; adjusting the gradation of the image information enhanced by the image.

Optionally, the image enhancement unit 822 adopts a histogram equalization algorithm, and an image achievable by processing the image information captured by the drone is: converting the format of the image information into a YUV format; in the YUV color space. The histogram equalization processing is performed on the luminance component Y.

Optionally, one way for the image enhancement unit 822 to adjust the gray level of the image enhanced image information is to adjust the Gamma curve of the display screen of the UAV control end. Specifically, when the display screen of the control end of the drone is in a strong light environment, the image enhancement unit 822 adjusts the gray level of the image enhanced image information by using a curve with a Gamma value of less than 1. When the display screen of the control end of the drone is in a night environment, and the image information is taken by the drone in the night environment, the image enhancement unit 822 adjusts the image enhancement by using a curve with a Gamma value of less than 1. The dark area of the image information is adjusted using a curve having a Gamma value greater than one to adjust the bright area of the image enhanced image information.

When the display screen of the control end of the drone is in a strong light environment or a night environment, the backlight brightness of the display screen of the drone control end is a preset value. The preset value is a maximum value of the backlight brightness of the display screen of the control end of the drone.

The specific principles and implementations of the control unit of the UAV provided by the embodiments of the present invention are similar to those of the embodiment shown in FIG. 2 and FIG. 3, and details are not described herein again.

In this embodiment, according to the intensity of the illumination received by the display screen of the control end of the drone, different environments of the control end of the drone, such as a strong light environment, a normal light environment or a night environment, are determined, and according to the control end of the drone In different environments, the brightness of the display screen of the drone control terminal is adjusted in different ways. Specifically, the brightness of the display screen can be adjusted by adjusting the backlight brightness of the display screen, or the image information displayed on the display screen can be enhanced. Processing to improve the display brightness of the image information in the display screen, and also can improve the display brightness of the display screen by combining the content enhancement and the backlight control, and improve the brightness of the display screen of the drone control end. Flexibility; in addition, the histogram equalization algorithm enhances the image information of the aerial image of the drone, and adjusts the brightness and contrast of the image displayed on the LCD display by adjusting the Gamma curve of the LCD display. When the backlight is a fixed value, the display brightness of the image information in the display screen is further increased; when no When the display of the control end of the machine is in a strong light environment, the overall brightness of the image is increased by the gama curve of the overall brightness, which increases the overall brightness of the image, and avoids the display of the display of the control end of the drone when the sun is directly exposed during outdoor work. The content of the drone is difficult to be seen; when the display of the drone control terminal is in the night environment, the dark area of the image information is adjusted by the curve with the Gamma value less than 1, and the bright area of the image information is adjusted by the curve with the Gamma value greater than 1. The dark area of the image is brightened, and the bright area is darkened, which avoids the problem that the video picture taken by the drone at night cannot be clearly displayed on the display screen.

In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, actual There may be additional divisions at present, for example multiple units or components may be combined or integrated into another system, or some features may be omitted or not implemented. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The above software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present invention. Part of the steps. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

A person skilled in the art can clearly understand that for the convenience and brevity of the description, only the division of each functional module described above is exemplified. In practical applications, the above function assignment can be completed by different functional modules as needed, that is, the device is installed. The internal structure is divided into different functional modules to perform all or part of the functions described above. For the specific working process of the device described above, refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

A screen brightness adjustment method suitable for a control end of a drone, characterized in that the method comprises:

Obtain image information captured by the drone and the light intensity of the environment in which the drone is controlled;

Adjusting the brightness of the display screen of the control end of the drone according to the illumination intensity of the environment in which the control end of the drone is located.
The method according to claim 1, wherein the adjusting the brightness of the display screen of the control end of the drone includes at least one of the following:

Adjusting the backlight brightness of the display screen of the drone control end;

Image enhancement processing is performed on the image information captured by the drone.
The method according to claim 2, wherein after the obtaining the illumination intensity of the environment in which the control end of the drone is located, the method further comprises:

And determining, according to the illumination intensity, that the display screen of the control end of the drone is in a strong light environment, a normal light environment, or a night environment.
The method according to claim 3, wherein the determining whether the display screen of the control end of the drone is in a strong light environment, a normal light environment or a night environment according to the illumination intensity comprises:

If the illumination intensity is less than the first threshold, determining that the display screen of the control end of the drone is in a night environment;

If the illumination intensity is greater than the second threshold, determining that the display screen of the control end of the drone is in a strong light environment, and the second threshold is greater than the first threshold;

And if the illumination intensity is between the first threshold and the second threshold, determining that the display screen of the UAV control end is in a normal light environment.
The method according to claim 4, wherein if the display screen of the control end of the drone is in a normal light environment, the backlight brightness of the display screen of the control end of the drone is adjusted.
The method according to claim 4, wherein if the display screen of the drone control end is in a strong light environment, image enhancement processing is performed on the image information captured by the drone.
The method according to claim 4, wherein if the display screen of the control end of the drone is in a nighttime environment, and the image information is that the drone is photographed in the nighttime environment, The image information captured by the drone is subjected to image enhancement processing.
The method according to claim 6 or 7, wherein the image information captured by the drone is subjected to image enhancement processing, including at least one of the following:

The image information captured by the drone is processed by using a histogram equalization algorithm;

The gradation of the image information captured by the drone is adjusted.
The method according to claim 6 or 7, wherein the performing image enhancement processing on the image information captured by the drone comprises:

Using the histogram equalization algorithm, the image information captured by the drone is processed to obtain image enhanced image information;

The gradation of the image enhanced image information is adjusted.
The method according to claim 8, wherein the processing the image information captured by the drone by using a histogram equalization algorithm comprises:

Converting the format of the image information into a YUV format;

In the YUV color space, the luminance component Y is subjected to histogram equalization processing.
The method according to claim 9, wherein the adjusting the gray level of the image enhanced image information comprises:

The Gamma curve of the display screen of the drone control end is adjusted.
The method according to claim 11, wherein the adjusting the Gamma curve of the display screen of the drone control end comprises:

If the display screen of the control end of the drone is in a strong light environment, adjust the gray level of the image enhanced image information by using a curve with a Gamma value less than one;

If the display screen of the control end of the drone is in a night environment, and the image information is that the drone is photographed in the nighttime environment, adjusting the image enhanced image information by using a curve with a Gamma value less than one In the dark region, a bright region of the image enhanced image information is adjusted using a curve having a Gamma value greater than one.
The method according to claim 4, wherein when the display screen of the control end of the drone is in a strong light environment or a nighttime environment, the backlight brightness of the display screen of the drone control end is a preset value.
The method according to claim 13, wherein the preset value is a maximum value of a backlight brightness of a display screen of the control end of the drone.
A drone control terminal, comprising: a display screen, one or more processors;

The one or more processors work alone or in concert;

The display screen is in communication with the one or more processors;

The one or more processors are used to:

Obtain image information captured by the drone and the light intensity of the environment in which the drone is controlled;

Adjusting the brightness of the display screen of the control end of the drone according to the illumination intensity of the environment in which the control end of the drone is located.
The drone control terminal according to claim 15, further comprising:

a backlight module communicatively coupled to the one or more processors;

The one or more processors are used to:

Adjusting a backlight brightness of a display screen of the control end of the drone by controlling the backlight module;

Image enhancement processing is performed on the image information captured by the drone.
The drone control terminal according to claim 16, further comprising:

a receiver communicatively coupled to the one or more processors, the receiver for receiving image information transmitted by the drone and transmitting the image information to the one or more processors;

a photosensitive device communicatively coupled to the one or more processors, the photosensitive device for sensing an illumination intensity of an environment in which the control end of the drone is located, and transmitting the illumination intensity to the one or more Processors.
The drone control terminal according to claim 17, wherein said one or more processors are configured to:

And determining, according to the illumination intensity, that the display screen of the control end of the drone is in a strong light environment, a normal light environment, or a night environment.
The drone control terminal according to claim 18, wherein said one or more processors determine said drone control end if said illumination intensity is less than a first threshold The display is in a night environment;

If the illumination intensity is greater than the second threshold, the one or more processors determine that the display screen of the UAV control end is in a strong light environment, and the second threshold is greater than the first threshold;

If the illumination intensity is between the first threshold and the second threshold, the one or more processors determine that the display of the drone control terminal is in a normal light environment.
The drone control terminal according to claim 19, wherein

When the one or more processors determine that the display screen of the control end of the drone is in a normal light environment, the one or more processors adjust the display of the control end of the drone by controlling the backlight module The backlight brightness of the screen.
The drone control terminal according to claim 19, wherein when said one or more processors determine that said display screen of said drone control terminal is in a strong light environment, said one or more processors use to:

Image enhancement processing is performed on the image information captured by the drone.
The drone control terminal according to claim 19, wherein when said one or more processors determine that said display screen of said drone control terminal is in a nighttime environment, and said image information is said The human machine is photographed in the nighttime environment, and the one or more processors are used to:

Image enhancement processing is performed on the image information captured by the drone.
The drone control terminal according to claim 21 or 22, wherein said one or more processors are used to:

The image information captured by the drone is processed by using a histogram equalization algorithm;

The gradation of the image information captured by the drone is adjusted.
The drone control terminal according to claim 21 or 22, wherein said one or more processors are used to:

Using the histogram equalization algorithm, the image information captured by the drone is processed to obtain image enhanced image information;

The gradation of the image enhanced image information is adjusted.
The drone control terminal according to claim 23, wherein said one or more processors are configured to:

Converting the format of the image information into a YUV format;

In the YUV color space, the luminance component Y is subjected to histogram equalization processing.
The drone control terminal according to claim 24, wherein said one or more processors are used to:

The Gamma curve of the display screen of the drone control end is adjusted.
The UAV control terminal according to claim 26, wherein when the display screen of the UAV control end is in a strong light environment, the one or more processors adopt a curve adjustment of a Gamma value of less than one. The gray scale of the image enhanced image information;

When the display screen of the control end of the drone is in a night environment, and the image information is taken by the drone in the night environment, the one or more processors adopt a curve adjustment with a Gamma value less than 1. A dark area of the image-enhanced image information is adjusted using a curve having a Gamma value greater than one to adjust a bright area of the image-enhanced image information.
The control terminal of the UAV according to claim 19, wherein when the display screen of the control end of the UAV is in a strong light environment or a night environment, the backlight brightness of the display screen of the UAV control end is pre- Set the value.
The drone control terminal according to claim 28, wherein the preset value is a maximum value of a backlight brightness of a display screen of the control end of the drone.
A drone control terminal, comprising:

Obtaining a module for acquiring image information captured by the drone and the light intensity of the environment in which the drone is controlled;

The brightness adjustment module is configured to adjust the brightness of the display screen of the control end of the drone according to the illumination intensity of the environment in which the control end of the drone is located.
The drone control terminal according to claim 30, wherein the brightness adjustment module comprises:

a backlight adjusting unit, configured to adjust a backlight brightness of the display screen of the control end of the drone;

And an image enhancement unit configured to perform image enhancement processing on the image information captured by the drone.
The drone control terminal according to claim 31, further comprising:

Determining a module, after the obtaining module acquires the light intensity of the environment in which the control end of the drone is located, determining, according to the illumination intensity, that the display screen of the control end of the drone is in a strong aura Environment, normal light environment or night environment.
The drone control terminal according to claim 32, wherein the determining module is specifically configured to:

If the illumination intensity is less than the first threshold, determining that the display screen of the control end of the drone is in a night environment;

If the illumination intensity is greater than the second threshold, determining that the display screen of the control end of the drone is in a strong light environment, and the second threshold is greater than the first threshold;

And if the illumination intensity is between the first threshold and the second threshold, determining that the display screen of the UAV control end is in a normal light environment.
The drone control terminal according to claim 33, wherein the backlight adjusting unit adjusts the drone when the determining module determines that the display screen of the drone control terminal is in a normal light environment The backlight brightness of the display on the console.
The drone control terminal according to claim 33, wherein the image enhancement unit pairs the drone when the determining module determines that the display screen of the drone control end is in a strong light environment The captured image information is subjected to image enhancement processing.
The drone control terminal according to claim 33, wherein when said determining module determines that the display screen of said drone control terminal is in a nighttime environment, and said image information is said drone The image enhancement unit performs image enhancement processing on the image information captured by the drone.
The UAV control terminal according to claim 35 or claim 36, wherein the image enhancement unit is specifically configured to: process the image information captured by the UAV by using a histogram equalization algorithm; or/and The gradation of the image information captured by the drone is adjusted.
The drone control terminal according to claim 35 or claim 36, wherein the image enhancement unit is specifically configured to: process image information captured by the drone by using a histogram equalization algorithm to obtain image enhancement Image information; adjusting the gradation of the image information enhanced by the image.
The UAV control terminal according to claim 37, wherein the image enhancement unit is specifically configured to: convert the format of the image information into a YUV format; and perform a histogram on the luminance component Y in the YUV color space. Balance processing.
A drone control terminal according to claim 38, wherein said image The enhancement unit is specifically configured to: adjust a Gamma curve of a display screen of the control end of the drone.
The drone control terminal according to claim 40, wherein when the display screen of the drone control terminal is in a strong light environment, the image enhancement unit adjusts the image enhancement by using a curve with a Gamma value of less than 1. Grayscale of image information;

When the display screen of the control end of the drone is in a night environment, and the image information is taken by the drone in the night environment, the image enhancement unit adjusts the image by using a curve with a Gamma value less than 1. A dark area of the enhanced image information, the bright area of the image enhanced image information is adjusted using a curve having a Gamma value greater than one.
The drone control terminal according to claim 33, wherein when the display screen of the control end of the drone is in a strong light environment or a nighttime environment, the backlight brightness of the display screen of the drone control end is pre- Set the value.
The drone control terminal according to claim 42, wherein the preset value is a maximum value of a backlight brightness of a display screen of the control end of the drone.