WO2020042013A1 - 一种图像的画质调节方法及系统、自主移动平台 - Google Patents

一种图像的画质调节方法及系统、自主移动平台 Download PDF

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Publication number
WO2020042013A1
WO2020042013A1 PCT/CN2018/102989 CN2018102989W WO2020042013A1 WO 2020042013 A1 WO2020042013 A1 WO 2020042013A1 CN 2018102989 W CN2018102989 W CN 2018102989W WO 2020042013 A1 WO2020042013 A1 WO 2020042013A1
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Prior art keywords
image quality
image
adjusted
quality parameter
adjustment
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PCT/CN2018/102989
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English (en)
French (fr)
Inventor
林隽曦
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SZ DJI Technology Co Ltd
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SZ DJI Technology Co Ltd
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Priority to CN201880042497.XA priority Critical patent/CN110832840A/zh
Priority to PCT/CN2018/102989 priority patent/WO2020042013A1/zh
Publication of WO2020042013A1 publication Critical patent/WO2020042013A1/zh
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80—Camera processing pipelines; Components thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/63—Control of cameras or camera modules by using electronic viewfinders
    • H04N23/631—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters
    • H04N23/632—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters for displaying or modifying preview images prior to image capturing, e.g. variety of image resolutions or capturing parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/2628—Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation

Definitions

  • the present disclosure relates to the field of images, and in particular, to an image quality adjustment method and system, and an autonomous mobile platform.
  • the camera When a user uses a device such as a camera for shooting, the camera usually displays only the captured image itself.
  • the image quality status of the image can only be judged by the image itself, which makes it impossible to easily understand whether there is an image quality problem in the image and what kind of image quality problem exists. Even if the user judges that there is a certain quality problem in the image, it is often unable to quickly resolve the quality problem due to lack of relevant professional knowledge, resulting in low quality adjustment efficiency.
  • An embodiment of the present disclosure provides an image quality adjustment method, which includes: displaying an image to be adjusted; obtaining an image quality parameter of the image to be adjusted; displaying a legend corresponding to a current value of the image quality parameter; obtaining The adjustment value of the image quality parameter, adjusting the image to be adjusted according to the adjustment value of the image quality parameter to obtain an adjusted image; displaying the adjusted image and the corresponding value of the adjustment value of the image quality parameter Legend: Acquire an image saving instruction to store the adjusted image.
  • An embodiment of the present disclosure further provides an image quality adjustment system, which includes: a display device for displaying an image to be adjusted; an input device for acquiring image quality parameters of the image to be adjusted; and the display device And used to display a legend corresponding to the current value of the image quality parameter; the input device is further configured to obtain an adjustment value of the image quality parameter; and a processor is configured to Adjusting the image to be adjusted to obtain an adjusted image; the display device is further configured to display a legend corresponding to the adjusted image and the adjustment value of the image quality parameter; the input device is further configured to obtain an image saving instruction The processor is further configured to store the adjusted image.
  • An embodiment of the present disclosure also provides an autonomous mobile platform, wherein the image quality adjustment system of the above image is mounted.
  • the user can intuitively and clearly know the image quality of the image through the legend, and can accurately and quickly determine whether the image quality parameter causes an image quality problem.
  • the user can also intuitively, Clearly know the difference in image quality before and after the image quality adjustment, so that you can avoid similar image quality problems and improve the efficiency of image quality adjustment.
  • 1 to 8 are display effect diagrams of an image quality adjustment method for an image according to an embodiment of the present disclosure.
  • FIG. 9 is a display effect diagram of an image quality adjustment method for an image according to another embodiment of the present disclosure.
  • FIG. 10 is another display effect diagram of an image quality adjustment method for an image according to an embodiment of the present disclosure.
  • FIG. 11 is a flowchart of an image quality adjustment method for an image according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic diagram of a composition of an image quality adjustment system for images according to still another embodiment of the present disclosure.
  • An embodiment of the present disclosure provides a method for adjusting image quality of an image, which is suitable for an image quality adjustment system of an image.
  • the image quality adjustment system of the image may be various systems having an image quality adjustment function.
  • a camera is taken as an example in this embodiment, but the image quality adjustment system of the image is not limited to the camera, and is also applicable to Examples include, but are not limited to, cameras, mobile phones, tablets, laptops, desktop computers, remote controls for drones, and so on.
  • the image quality adjustment method of this embodiment includes the following steps:
  • S101 Display an image to be adjusted.
  • the image to be adjusted is an image whose image quality is to be adjusted by the user.
  • the image to be adjusted may be an image that has been stored in the camera.
  • the camera may directly display the stored image to the user.
  • the user can also use the camera to capture an image, and the camera displays the captured image to the user as an image to be adjusted.
  • S102 Acquire an image quality parameter of the image to be adjusted, and display a legend corresponding to a current value of the image quality parameter.
  • the image quality can be adjusted, which can generally be achieved by adjusting the image quality parameters.
  • the camera will obtain the image quality parameter and analyze the image to be adjusted to obtain the current value of the image quality parameter of the image to be adjusted, and display the image to be adjusted while displaying
  • the legend corresponding to the current value of this image quality parameter.
  • the legend refers to an image that reflects the influence of the image quality parameter on the image quality effect, or an image that reflects an image quality problem caused by the image quality parameter.
  • the image quality parameter may be saturation, and a corresponding legend is a color tone map.
  • the camera obtains the saturation input by the user and analyzes the image to be adjusted to obtain the current value of the saturation of the image to be adjusted, for example, 0.
  • a color tone map corresponding to the saturation 0 is displayed.
  • the tone map uses, for example, a tone map of the RGB (Red Green Blue) system.
  • the color tone map may be a tone map of the color with the largest number of pixels in the image to be adjusted. For example, when the number of red pixels in the image to be adjusted is the largest, the camera displays a gradation map related to red, that is, a gradation map of another color, for example, R-Blue (red-blue), R-Green (red -Green), RW (red-white), RY (red-yellow), R-Black (red-black), and so on.
  • Each tone map has multiple color blocks, and each color block displays red, another color, and a color in between, so the tone map can reflect the discrimination from red to another color.
  • the saturation when the saturation is 0, the camera displays an R-W tone map with six gradients, that is, red becomes white after six color changes.
  • the tone map indicates that when the saturation is 0, the tone of the image is good and the color resolution is good.
  • Figure 1 is only for illustrative purposes.
  • the camera can also display multiple red-related tone maps as described above; it can also display multiple color tone maps, such as red and green-related tone maps at the same time. Showing richer tone and color resolution will help users understand the image quality of images more intuitively and from multiple angles.
  • the camera when it displays the color tone map, it can also display the corresponding prompt text of the color tone map, the prompt text reflects the image quality situation reflected by the current value of the saturation of the image to be adjusted.
  • the content of the prompt text is related to the color difference between two adjacent color blocks of the color tone map.
  • the prompt text "Good tone and high color resolution” is defined as the color difference ⁇ E of two adjacent color blocks is greater than 6; "Good tone and good color resolution” is defined as the color difference ⁇ E of two adjacent color blocks is less than 6 and greater than 3; “gradation difference, low color resolution” is defined as the color difference ⁇ E of two adjacent color blocks is less than 3.
  • the position of the prompt text is not limited, and it can also be displayed above, to the left, and to the right of the color tone map, or it can be directly displayed on the color tone map.
  • S103 Acquire an adjustment value of the image quality parameter, and adjust the image to be adjusted according to the adjustment value of the image quality parameter to obtain an adjusted image.
  • This new image quality parameter value is called an adjustment value.
  • the camera obtains the adjustment value of the image quality parameter, it adjusts the image to be adjusted according to the adjustment value to obtain an adjusted image.
  • the camera adjusts the saturation of the image to be adjusted to -3, that is, the saturation of the adjusted image is- 3. If the input saturation adjustment value is +3, the camera adjusts the saturation of the image to be adjusted to +3, that is, the saturation of the adjusted image is +3.
  • S104 Display a legend corresponding to the adjusted image and the adjustment value of the image quality parameter.
  • the camera displays the adjusted image and also displays the legend corresponding to the adjustment value of the image quality parameter.
  • This legend is the same as the legend corresponding to the current value of the image quality parameter. For example, when the saturation of the adjusted image is -3, as shown in FIG. 3, the RW tone map corresponding to the saturation -3 is displayed at the same time as the adjusted image is displayed. At -3, the tone of the image is good and the color resolution is high.
  • the text “good tone and high color resolution” can also be displayed below the color tone map, indicating that when the saturation is ⁇ 3, the image has a good tone and high color resolution. This can inform the user of the image quality of the image more intuitively.
  • the RW tone map corresponding to the saturation of +3 is displayed at the same time as the adjusted image is displayed.
  • the tone map indicates that the saturation is +3.
  • the image has poor tone and low color resolution.
  • the text “gradation difference and low color resolution” may also be displayed below the color tone map, which indicates that when the saturation is +3, the tone difference and color resolution of the image are low. This can inform the user of the image quality of the image more intuitively.
  • the camera can also display a plurality of red-related tone maps corresponding to step S102; it can also display a plurality of color tone maps corresponding to step S102, which can display a richer picture
  • the tone and color resolution of the image help users to understand the image quality of the image more intuitively and from multiple angles.
  • the user can intuitively and clearly know the image quality of the image through the legend, and can accurately and quickly judge whether the image quality parameters cause an image quality problem. And by comparing the legend of the image quality parameter adjustment value with the legend of the current value, the user can also intuitively and clearly know the difference in image quality before and after the image quality adjustment, so as to avoid similar image quality problems and improve the efficiency of image quality adjustment. So that users can quickly adjust the picture quality according to their own preferences, and can avoid introducing other picture quality problems without their knowledge.
  • the camera may also select a partial area of the adjusted image for enlarged display, and the ratio of the enlarged display may be set in advance or selected by a user.
  • the local area that is displayed enlarged is the area that has the most improvement or deterioration in image quality problems compared to before the image quality adjustment, that is, the image quality optimization degree of the local area is greater than the image quality optimization degree of other areas of the adjusted image, or its image quality degradation The degree is greater than that of other areas of the image after the adjustment.
  • the camera can also display the adjusted image in a localized area at an enlarged scale while displaying the adjusted image as a whole. In this way, the user can see the overall image while seeing the local area, which is conducive to making a more accurate judgment on the picture quality problem.
  • the adjusted image is obtained through the above steps. If the user is satisfied with the image quality of the adjusted image, proceed directly to the next step. If the image quality of the adjusted image deteriorates, or the user wants to further adjust the image quality, the user may return to step S103 to start execution again.
  • the adjusted image is used as the image to be adjusted next time, and the image quality parameters of the current adjustment are adjusted.
  • the value is used as the current value of the image quality parameter for the next adjustment.
  • the user then enters the new adjustment value of the image quality parameter.
  • the camera obtains the new adjustment value of the image quality parameter, and readjusts the image to be adjusted according to the new adjustment value. image. Then display the adjusted image and the legend corresponding to the new adjustment value of the image quality parameter, and repeat this process until the user is satisfied with the image quality of the adjusted image and then proceed to the next step.
  • the user After the user obtains the adjusted image with satisfactory image quality, he can enter an image holding instruction, and the camera stores the adjusted image after obtaining the image saving instruction.
  • the user can enter an image quality parameter saving instruction.
  • the camera obtains the image quality parameter saving instruction, it stores the adjustment value of the image quality parameter for the next image acquisition.
  • the camera directly calls the saved image quality parameter adjustment value for shooting, which can directly obtain a high-quality image, avoiding the user to adjust the image quality again, which can improve the shooting efficiency and Convenience.
  • a method for adjusting the image quality of another embodiment of the present disclosure is a brief description, and the same or similar parts as the above embodiment are not repeated, and only the differences from the above embodiment are described below.
  • step S103 of this embodiment instead of the adjustment value of the image quality parameter input by the user, when the camera displays the legend corresponding to the current value of the image quality parameter, the icon corresponding to the predetermined value of the image quality parameter is also automatically displayed.
  • the image quality corresponding to the predetermined value of the image quality parameter is better than the image quality corresponding to the current value.
  • the user can select an icon corresponding to a predetermined value of the image quality parameter, and generate an icon selection instruction after selecting an icon corresponding to a predetermined value.
  • the camera obtains an icon selection instruction, and uses a predetermined value of an image quality parameter corresponding to the icon selection instruction as an adjustment value of the image quality parameter.
  • the camera displays three icons at the same time, each icon corresponding to a predetermined value of the saturation.
  • the three icons in Figure 9 are equipped with text: "Color Resolution High +", “Color Resolution High”, and “Color Resolution Middle”, and the corresponding saturation values are: greater than 3, greater than 1.5, and less than 3 And greater than 0 and less than 1.5, the color differences of the corresponding two adjacent color blocks are: ⁇ E is greater than 6, ⁇ E is less than 6 and greater than 4.5, and ⁇ E is less than 4.5 and greater than 3, and these predetermined values correspond to higher image quality than the current The value corresponds to the picture quality.
  • the user can directly select one of the icons, for example, select the icon “Color Resolution High”, then the camera will use a saturation value greater than 1.5 and less than 3 as the adjustment value, and then perform the subsequent steps.
  • the number of icons displayed by the camera can be more than three, and can be set as appropriate according to the image quality parameters and their value distribution.
  • a preset high-quality parameter preset value set for a user is proactively provided, and the user can directly select it, eliminating the operation of inputting a parameter value by himself, and even a user who does not know photography knowledge can quickly adjust the image quality , Make the user's operation more convenient, fast and efficient, and further improve the picture quality adjustment efficiency.
  • the image quality adjustment method of the present disclosure has been described by taking the image quality parameter of saturation as an example through the two embodiments, but the present disclosure is not limited thereto.
  • the image quality parameters can be any kind of parameters of images well known to those skilled in the art, such as, but not limited to, sharpness, contrast, etc.
  • the corresponding legends are edge contour maps, brightness contrast maps, and cameras can also display edge contour maps,
  • the corresponding prompt text of the brightness comparison chart, the prompt text reflects the image quality situation reflected by the sharpness or contrast value of the image to be adjusted.
  • FIG. 10 shows the corresponding edge profile.
  • the sharpened image curve in the edge contour map represents the image quality of the sharpness value.
  • the convex part of the sharpened image curve is Overshoot artifact, and the concave part is Undershoot artifact. Both can reflect the quality of the sharpness value. Specifically, the lower the sharpness value, the smaller the amplitude of the excess artifact and the under-artifact, and conversely, the larger the amplitude of the excess artifact and the under-artifact.
  • An appropriate sharpness value brings a high-quality image. Too small or too large a sharpness value will cause image quality problems. Users can intuitively and clearly know the quality of the image through the edge contour map.
  • FIG. 12 Another embodiment of the present disclosure provides an image quality adjustment system, as shown in FIG. 12, including a display device, an input device, and a processor.
  • the camera is used as an example to describe the image quality adjustment system in this embodiment, but the image quality adjustment system of the image is not limited to the camera, and may be, for example, but not limited to, a video camera, a mobile phone, a tablet computer, a notebook computer, Desktop computers, remote controls for drones, and more.
  • a display device is used to display an image to be adjusted, and may be, for example, various displays such as an LCD, an LED, and an OLED.
  • the image to be adjusted may be an image that has been stored in the camera.
  • the display may directly display the stored image to the user.
  • the user can also use the camera to capture an image first, and the monitor displays the captured image as the image to be adjusted to the user.
  • the input device is used to obtain the image quality parameter of the image to be adjusted, and the display device is further used to display the legend corresponding to the current value of the image quality parameter.
  • Input devices can be buttons, knobs, and other operating components on the camera.
  • the display of the camera is a touch screen
  • the touch screen can also be used as an input device in this embodiment.
  • the camera After the user selects the image quality parameter to be adjusted through the input device, the camera will obtain the image quality parameter and analyze the image to be adjusted to obtain the current value of the image quality parameter of the image to be adjusted. While the monitor displays the image to be adjusted, Displays the legend corresponding to the current value of the image quality parameter.
  • the image quality parameter may be saturation, and a corresponding legend is a color tone map.
  • the display may also display corresponding prompt text of the color tone map, the prompt text reflecting the image quality situation reflected by the current value of the image quality parameter to be adjusted.
  • the input device is also used to obtain the adjustment value of the image quality parameter.
  • a processor configured to adjust an image to be adjusted according to an adjustment value of an image quality parameter to obtain an adjusted image.
  • the user inputs the adjustment value of the image quality parameter.
  • the processor After the processor obtains the adjustment value of the image quality parameter, the processor will adjust the image to be adjusted according to the adjustment value to obtain an adjusted image.
  • the display device is also used to display the adjusted image and the legend corresponding to the adjustment value of the image quality parameter.
  • the monitor displays the adjusted image and also displays the legend corresponding to the adjustment value of the image quality parameter. This legend is the same as the legend corresponding to the current value of the image quality parameter.
  • the user can intuitively and clearly know the image quality of the image through the legend, and can accurately and quickly judge whether the image quality parameters cause an image quality problem. And by comparing the legend of the image quality parameter adjustment value with the legend of the current value, the user can also intuitively and clearly know the difference in image quality before and after the image quality adjustment, so as to avoid similar image quality problems and improve the efficiency of image quality adjustment. So that users can quickly adjust the picture quality according to their own preferences, and can avoid introducing other picture quality problems without their knowledge.
  • the display may also select a local area of the adjusted image for enlarged display, and the enlarged display ratio may be set in advance or selected by a user.
  • the local area that is displayed enlarged is the area that has the most improvement or deterioration in image quality problems compared to before the image quality adjustment, that is, the image quality optimization degree of the local area is greater than the image quality optimization degree of other areas of the adjusted image, or its image quality degradation The degree is greater than that of other areas of the image after the adjustment.
  • the monitor may also display the adjusted image in its entirety at the same time, and display the adjusted image in a localized area. In this way, the user can see the whole image while seeing the local area, which is conducive to making a more accurate judgment on the picture quality problem.
  • the user If the user is satisfied with the image quality of the adjusted image, directly input the image saving instruction through the input device. If the image quality of the adjusted image deteriorates, or the user wants to further adjust the image quality, the user can re-enter the new adjustment value of the image quality parameter through the input device and adjust again until the user is satisfied with the image quality of the adjusted image.
  • the input device is further configured to obtain an image saving instruction
  • the processor is further configured to store the adjusted image
  • the processor After the user obtains the adjusted image with satisfactory image quality, he can enter an image holding instruction, and the processor stores the adjusted image after obtaining the image saving instruction.
  • the user can enter an image quality parameter saving instruction, and the processor stores the adjustment value of the image quality parameter after obtaining the image quality parameter saving instruction for the next image acquisition.
  • the camera directly calls the saved image quality parameter adjustment value for shooting, which can directly obtain a high-quality image, avoiding the user to adjust the image quality again, which can improve the shooting efficiency and Convenience.
  • the icon corresponding to the predetermined value of the image quality parameter is also automatically displayed, and the image corresponding to the predetermined value of the image quality parameter is excellent The image quality corresponding to the current value.
  • the user may select an icon corresponding to a predetermined value of the image quality parameter through an input device, and generate an icon selection instruction after selecting an icon corresponding to a predetermined value.
  • the processor obtains an icon selection instruction, and uses a predetermined value of an image quality parameter corresponding to the icon selection instruction as an adjustment value of the image quality parameter.
  • the camera actively provides the preset high-quality parameter values set by the user, which can be directly selected by the user, eliminating the need to input parameter values by himself, and even users who do not know photography knowledge can quickly adjust the picture. Quality, making the user's operation more convenient, fast and efficient, further improving the efficiency of picture quality adjustment.
  • Autonomous mobile platforms can be drones, or other aerial vehicles (e.g., aircraft, rotorcraft, lighter-than-air vehicles), land-based vehicles (e.g., cars, trucks, buses, trains, off-road vehicles, Subway), water-based vehicles (e.g., ships, ships, submarines), or space-based vehicles (e.g., satellites, space shuttles, rockets), and so on.
  • aerial vehicles e.g., aircraft, rotorcraft, lighter-than-air vehicles
  • land-based vehicles e.g., cars, trucks, buses, trains, off-road vehicles, Subway
  • water-based vehicles e.g., ships, ships, submarines
  • space-based vehicles e.g., satellites, space shuttles, rockets

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Abstract

一种图像的画质调节方法，其中，包括：显示待调节图像；获取所述待调节图像的画质参数，显示所述画质参数的当前值所对应的图例；获取所述画质参数的调节值，根据所述画质参数的调节值对所述待调节图像进行调节，得到调节后图像；显示所述调节后图像以及所述画质参数的调节值所对应的图例；获取图像保存指令，存储所述调节后图像。

Description

一种图像的画质调节方法及系统、自主移动平台 技术领域
本公开涉及图像领域，尤其涉及一种图像的画质调节方法及系统、自主移动平台
背景技术
用户在使用相机等装置进行摄影时，相机通常只显示拍摄的图像本身。当用户对图像的画质进行调节时，只能通过图像本身判断图像的画质状态，导致无法轻易了解图像是否存在画质问题、以及存在何种画质问题。即使用户判断出图像存在某种画质问题，也会经常因为缺乏相关专业知识而无法快速解决画质问题，导致画质调节效率低下。
公开内容
本公开实施例提供了一种图像的画质调节方法，其中，包括：显示待调节图像；获取所述待调节图像的画质参数，显示所述画质参数的当前值所对应的图例；获取所述画质参数的调节值，根据所述画质参数的调节值对所述待调节图像进行调节，得到调节后图像；显示所述调节后图像以及所述画质参数的调节值所对应的图例；获取图像保存指令，存储所述调节后图像。
本公开实施例还提供了一种图像的画质调节系统，其中，包括：显示设备，用于显示待调节图像；输入设备，用于获取所述待调节图像的画质参数；所述显示设备还用于显示所述画质参数的当前值所对应的图例；所述输入设备还用于获取所述画质参数的调节值；处理器，用于根据所述画质参数的调节值对所述待调节图像进行调节，得到调节后图像；所述显示设备还用于显示所述调节后图像以及所述画质参数的调节值所对应的图例；所述输入设备还用于获取图像保存指令；所述处理器还用于存储所述调节后图像。
本公开实施例还提供了一种自主移动平台，其中，搭载有上述图像的画质调节系统。
从上述技术方案可以看出，本公开实施例至少具有以下有益效果：
用户通过图例可以直观、清楚地知道图像的画质情况，能够准确、快 速地判断画质参数是否带来画质问题；通过画质参数调节值图例与当前值图例的对比，用户还可以直观、清楚地知道画质调节前后的画质差异，从而可以规避类似的画质问题，进而提高画质调节效率。
附图说明
附图是用来提供对本公开的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本公开，但并不构成对本公开的限制。在附图中：
图1至图8分别是本公开一实施例图像的画质调节方法的显示效果图。
图9是本公开另一实施例图像的画质调节方法的显示效果图。
图10是本公开实施例图像的画质调节方法的另一显示效果图。
图11是本公开一实施例图像的画质调节方法的流程图。
图12是本公开再一实施例图像的画质调节系统的组成示意图。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚明白，以下结合具体实施例，并参照附图，对本公开进一步详细说明。
本公开一实施例提供了一种图像的画质调节方法，适用于图像的画质调节系统。该图像的画质调节系统可以是各种具有画质调节功能的系统，为描述方便，在本实施例中以相机为例进行说明，但图像的画质调节系统并不限于相机，还适用于例如但不限于摄像机、手机、平板电脑、笔记本电脑、台式电脑、无人机的遥控器等等。
本实施例的画质调节方法，如图11所示，包括以下步骤：
S101：显示待调节图像。
待调节图像为用户欲进行画质调节的图像。待调节图像可以是已经存储于相机中的图像，这种情况下，相机直接将存储的图像显示给用户即可。对于相机这类具有拍摄功能的系统，用户也可以先用相机拍摄一张图像，相机将所拍摄的图像作为待调节图像显示给用户。
S102：获取所述待调节图像的画质参数，显示所述画质参数的当前值所对应的图例。
当用户对待调节图像的画质不满意时，可对其画质进行调节，一般可通过调节画质参数的方式实现。当用户选择欲调节的画质参数后，相机会 获取到该画质参数，并对待调节图像进行分析，得到待调节图像的该画质参数的当前值，并在显示待调节图像的同时，显示该画质参数的当前值所对应的图例。在本实施例中，图例是指反映画质参数对画质效果影响的图像，或者说，反映画质参数所带来的画质问题的图像。
在一个示例中，该画质参数可以是饱和度，其对应的图例为颜色阶调图。
如图1所示，当用户欲对待调节图像的饱和度进行调节时，相机获取到用户输入的是饱和度，会对待调节图像进行分析，得到待调节图像饱和度的当前值，例如为0，并在显示待调节图像的同时，显示饱和度0所对应的颜色阶调图。
阶调图例如采用RGB(红绿蓝)体系的阶调图。颜色阶调图可以是待调节图像中像素数量最多的颜色的阶调图。例如，当待调节图像中的红色像素数量最多时，相机显示红色相关的阶调图，即红色-另一颜色的阶调图，例如，R-Blue(红-蓝)、R-Green(红-绿)、R-W(红-白)、R-Y(红-黄)、R-Black(红-黑)等等。每个阶调图具有多个色块，各个色块分别显示红色、另一颜色、以及二者之间的一种颜色，所以阶调图可以反映由红色至另一颜色的分辨性。如图1中，当饱和度为0时，相机显示了一条R-W阶调图，具有六个梯度，即红色经六个颜色变化变为白色。该阶调图表示在饱和度为0时，图像的阶调良好、颜色分辨性良好。
图1只是示例性说明，相机也可以显示多条如上所述的红色相关的阶调图；也可以显示多个颜色的阶调图，例如同时显示红色相关和绿色相关的阶调图，这样可以展示更丰富的阶调和颜色分辨性，有利于用户更加直观、多角度了解图像的画质情况。
进一步地，相机在显示颜色阶调图的同时，还可以显示颜色阶调图相应的提示文字，该提示文字反映了待调节图像饱和度的当前值所反映的画质情况。本实施例中，提示文字的内容与颜色阶调图相邻两个色块的色差相关。例如，提示文字“阶调好、颜色分辨度高”定义为相邻两个色块的色差ΔE大于6；“阶调良好、颜色分辨性良好”定义为相邻两个色块的色差ΔE小于6且大于3；“阶调差、颜色分辨性低”定义为相邻两个色块的色差ΔE小于3。如图2所示，在饱和度为0时，相邻两个色块的色差ΔE 小于6且大于3，所以在颜色阶调图下方显示有“阶调良好、颜色分辨性良好”的提示文字，表示图像的阶调良好、颜色分辨性良好。这样可以更加直观地告知用户图像的画质情况。本实施例对提示文字的位置不加以限制，其也可以在颜色阶调图的上方、左侧、右侧显示，也可以直接显示在颜色阶调图上。
S103：获取所述画质参数的调节值，根据所述画质参数的调节值对所述待调节图像进行调节，得到调节后图像。
用户对画质参数当前值所呈现的画质不满意时，可以输入一个新的画质参数值以求达到更优的画质，该新的画质参数值称为调节值。相机获取到画质参数的该调节值后，会根据该调节值对待调节图像进行调节，得到调节后图像。
例如，当用户对饱和度为0的画质不满意时，如果输入的饱和度调节值为-3，则相机将待调节图像的饱和度调节为-3，即调节后图像的饱和度为-3。如果输入的饱和度调节值为+3，则相机将待调节图像的饱和度调节为+3，即调节后图像的饱和度为+3。
S104：显示所述调节后图像以及所述画质参数的调节值所对应的图例。
相机显示调节后图像，同时显示画质参数的调节值所对应的图例，该图例与画质参数当前值所对应的图例是同一种图例。例如，当调节后图像的饱和度为-3时，如图3所示，在显示调节后图像的同时，显示饱和度-3所对应的R-W阶调图，该阶调图表示在饱和度为-3时，图像的阶调好、颜色分辨性高。
如图4所示，在颜色阶调图下方也可以显示有“阶调好、颜色分辨性高”的文字，表示在饱和度为-3时，图像的阶调好、颜色分辨性高。这样可以更加直观地告知用户图像的画质情况。
当调节后图像的饱和度为+3时，如图5所示，在显示调节后图像的同时，显示饱和度+3所对应的R-W阶调图，该阶调图表示在饱和度为+3时，图像的阶调差、颜色分辨性低。
如图6所示，在颜色阶调图下方也可以显示有“阶调差、颜色分辨性低”的文字，表示在饱和度为+3时，图像的阶调差、颜色分辨性低。这样可以更加直观地告知用户图像的画质情况。
图3至图6也只是示例性说明，相机也可以显示与步骤S102对应的多条红色相关的阶调图；也可以显示与步骤S102对应的多个颜色的阶调图，这样可以展示更丰富的阶调和颜色分辨性，有利于用户更加直观、多角度了解图像的画质情况。
通过本实施例，用户通过图例可以直观、清楚地知道图像的画质情况，能够准确、快速地判断画质参数是否带来画质问题。并且通过画质参数调节值图例与当前值图例的对比，用户还可以直观、清楚地知道画质调节前后的画质差异，从而可以规避类似的画质问题，进而提高画质调节效率。使得用户既能根据自己的喜好快速调节画质，又可避免在不知情的情况下引入其他画质问题。
在本实施例中，如图7所示，相机还可以选择调节后图像的局部区域进行放大显示，放大显示的比例可以事先设定或由用户选择。放大显示的该局部区域是相对于画质调节前，画质问题改善或恶化最大的区域，即该局部区域的画质优化程度大于调节后图像其他区域的画质优化程度，或其画质劣化程度大于调节后图像其他区域的画质劣化程度。通过放大显示的局部区域，可以明确告知用户图像哪个部分的画质得到了明显改善或恶化，使用户更加方便、快捷地判断画质是否已经得到改善，进一步提高画质调节效率。
如图8所示，相机也可以在按照原比例整体显示调节后图像的同时，放大比例显示调节后图像的局部区域。这样用户在看到局部区域的同时还可以看到整体图像，有利于对画质问题做出更加准确的判断。
通过上述步骤得到调节后图像，若用户对调节后图像的画质满意，直接进入下个步骤。若调节后图像的画质恶化，或者用户想进一步对画质进行调节，可以重新返回步骤S103开始执行，本次的调节后图像作为下次调节的待调节图像，本次调节的画质参数调节值作为下次调节的画质参数当前值，用户再输入画质参数的新调节值，相机获取画质参数的新调节值，根据该新调节值对待调节图像进行再次调节，得到再次调节后的图像。然后显示再次调节后的图像以及画质参数的新调节值所对应的图例，如此反复，直至用户对调节后图像的画质满意后进入下个步骤。
S105：获取图像保存指令，保存所述调节后图像。
用户得到画质满意的调节后图像后，可以输入图像保持指令，相机获取到图像保存指令后将调节后图像存储。
对于相机这类具有拍摄功能的系统，用户可以输入画质参数保存指令，相机获取到画质参数保存指令后存储画质参数的调节值，用于下次图像采集。当用户使用相机进行下一次拍摄时，相机直接调用所保存的画质参数调节值进行拍摄，可以直接得到高画质的图像，避免用户再次对图像的画质进行调节，可以提高拍摄的效率和便捷性。
本公开另一实施例的图像的画质调节方法，为简要描述，与上述实施例相同或相似的部分不再重述，以下仅介绍与上述实施例不同之处。
在本实施例的步骤S103中，并非由用户输入画质参数的调节值，而是在相机显示画质参数当前值所对应的图例时，还自动显示出画质参数的预定值所对应的图标，画质参数的该预定值所对应的画质优于当前值所对应的画质。用户可以对画质参数预定值所对应的图标进行选择，当选定某个预定值所对应的图标后生成图标选择指令。相机获取图标选择指令，将图标选择指令对应的画质参数的预定值作为画质参数的调节值。
如图9所示，当饱和度的当前值所对应的颜色阶调图表示画质较差时，相机同时会显示出三个图标，每个图标对应饱和度的一个预定值。图9中的三个图标分别配有文字：“颜色分辨性High+”、“颜色分辨性High”和“颜色分辨性Middle”，对应的饱和度预定值分别是：大于3、大于1.5且小于3以及大于0且小于1.5，对应的相邻两个色块的色差分别是：ΔE大于6、ΔE小于6且大于4.5以及ΔE小于4.5且大于3，这些预定值对应的画质都是高于当前值对应的画质的。用户设定调节值时，可以直接选择其中一个图标，例如选择图标“颜色分辨性High”，那么相机会将大于1.5且小于3的饱和度值作为调节值，然后进行之后的步骤。
当然上述只是示例性说明，相机显示的图标数量可以不止三个，可以根据画质参数及其取值分布情况，酌情设定。
通过本实施例，主动提供给用户设定好的高画质参数预定值，用户直接选择即可，省去了自己输入参数值的操作，即使是不懂摄影知识的用户也可以快速调节画质，使用户的操作更加方便、快捷、高效，进一步提高了画质调节效率。
以上通过两个实施例，以饱和度这一画质参数为例，对本公开的画质调节方法进行了说明，但本公开并不限于此。画质参数可以是本领域技术人员熟知的图像的任一种参数，例如但不限于锐度、对比度等，所对应的图例分别为边缘轮廓图、亮度对比图，相机也可以显示边缘轮廓图、亮度对比图相应的提示文字，该提示文字反映了待调节图像锐度或对比度值所反映的画质情况。
例如，当画质参数为锐度时，图10显示了其对应的边缘轮廓图(Edge profile)。边缘轮廓图中的锐化图像(sharpened image)曲线代表锐度值的画质情况。锐化图像曲线中的凸起部分为过量伪影(Overshoot artifact)，凹陷部分为欠量伪影(Undershoot artifact)，二者能够反映锐度值的画质好坏。具体来说，锐度值越低，则过量伪影和欠量伪影的幅度越小，反之，过量伪影和欠量伪影的幅度越大。适当的锐度值带来高画质的图像，锐度值过小或过大都会引起画质问题。通过边缘轮廓图用户就可以直观、清楚地知道图像的画质情况。
本公开再一实施例提供了一种图像的画质调节系统，如图12所示，包括：显示设备、输入设备和处理器。为描述方便，在本实施例中以相机为例对画质调节系统进行说明，但图像的画质调节系统并不限于相机，还可以例如但不限于是摄像机、手机、平板电脑、笔记本电脑、台式电脑、无人机的遥控器等等。
显示设备，用于显示待调节图像，例如可以是LCD、LED、OLED等等各种显示器。
待调节图像可以是已经存储于相机中的图像，这种情况下，显示器直接将存储的图像显示给用户即可。对于相机这类具有拍摄功能的系统，用户也可以先用相机拍摄一张图像，显示器将所拍摄的图像作为待调节图像显示给用户。
输入设备，用于获取待调节图像的画质参数，显示设备还用于显示画质参数的当前值所对应的图例。
输入设备可以是相机上的按钮、旋钮等操作部件。当相机的显示器为触摸屏时，触摸屏也可以同时作为本实施例的输入设备。
当用户通过输入设备选择欲调节的画质参数后，相机会获取到该画质 参数，并对待调节图像进行分析，得到待调节图像的该画质参数的当前值，显示器显示待调节图像的同时，显示该画质参数的当前值所对应的图例。在一个示例中，该画质参数可以是饱和度，其对应的图例为颜色阶调图。
进一步地，显示器在显示颜色阶调图的同时，还可以显示颜色阶调图相应的提示文字，该提示文字反映了待调节图像画质参数的当前值所反映的画质情况。
输入设备还用于获取画质参数的调节值。
处理器，用于根据画质参数的调节值对待调节图像进行调节，得到调节后图像。
用户输入画质参数的调节值，处理器获取到画质参数的该调节值后，会根据该调节值对待调节图像进行调节，得到调节后图像。
显示设备还用于显示调节后图像以及画质参数的调节值所对应的图例。
显示器显示调节后图像，同时显示画质参数的调节值所对应的图例，该图例与画质参数当前值所对应的图例是同一种图例。
本实施例的画质调节系统，用户通过图例可以直观、清楚地知道图像的画质情况，能够准确、快速地判断画质参数是否带来画质问题。并且通过画质参数调节值图例与当前值图例的对比，用户还可以直观、清楚地知道画质调节前后的画质差异，从而可以规避类似的画质问题，进而提高画质调节效率。使得用户既能根据自己的喜好快速调节画质，又可避免在不知情的情况下引入其他画质问题。
在本实施例中，显示器还可以选择调节后图像的局部区域进行放大显示，放大显示的比例可以事先设定或由用户选择。放大显示的该局部区域是相对于画质调节前，画质问题改善或恶化最大的区域，即该局部区域的画质优化程度大于调节后图像其他区域的画质优化程度，或其画质劣化程度大于调节后图像其他区域的画质劣化程度。通过放大显示的局部区域，可以明确告知用户图像哪个部分的画质得到了明显改善或恶化，使用户更加方便、快捷地判断画质是否已经得到改善，进一步提高画质调节效率。
显示器也可以在按照原比例整体显示调节后图像的同时，放大比例显示调节后图像的局部区域。这样用户在看到局部区域的同时还可以看到整 体图像，有利于对画质问题做出更加准确的判断。
若用户对调节后图像的画质满意，直接通过输入设备输入图像保存指令。若调节后图像的画质恶化，或者用户想进一步对画质进行调节，可以重新通过输入设备输入画质参数的新调节值，再次进行调节，直至用户对调节后图像的画质满意。
输入设备还用于获取图像保存指令，处理器还用于存储所述调节后图像。
用户得到画质满意的调节后图像后，可以输入图像保持指令，处理器获取到图像保存指令后将调节后图像存储。
对于相机这类具有拍摄功能的系统，用户可以输入画质参数保存指令，处理器获取到画质参数保存指令后存储画质参数的调节值，用于下次图像采集。当用户使用相机进行下一次拍摄时，相机直接调用所保存的画质参数调节值进行拍摄，可以直接得到高画质的图像，避免用户再次对图像的画质进行调节，可以提高拍摄的效率和便捷性。
本公开又一实施例的图像的画质调节系统，为简要描述，与上述实施例相同或相似的部分不再重述，以下仅介绍与上述实施例不同之处。
本实施例的画质调节系统，显示器显示画质参数当前值所对应的图例时，还自动显示出画质参数的预定值所对应的图标，画质参数的该预定值所对应的画质优于当前值所对应的画质。
用户可以通过输入设备对画质参数预定值所对应的图标进行选择，当选定某个预定值所对应的图标后生成图标选择指令。处理器获取图标选择指令，将图标选择指令对应的画质参数的预定值作为画质参数的调节值。
通过本实施例，相机主动提供给用户设定好的高画质参数预定值，用户直接选择即可，省去了自己输入参数值的操作，即使是不懂摄影知识的用户也可以快速调节画质，使用户的操作更加方便、快捷、高效，进一步提高了画质调节效率。
本公开最后一实施例提供了一种自主移动平台，搭载有上述任一实施例的图像的画质调节系统。自主移动平台可以是无人机，或者，其他空中载运工具(例如，飞机、旋翼机、轻于空气的载运工具)、基于陆地的载运工具(例如，汽车、卡车、客车、火车、越野车、地铁)、基于水的载运工 具(例如，船只、轮船、潜艇)、或基于太空的载运工具(例如，卫星、航天飞机、火箭)，等等。
本领域技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。上述描述的装置的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
最后应说明的是：以上各实施例仅用以说明本公开的技术方案，而非对其限制；尽管参照前述各实施例对本公开进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；在不冲突的情况下，本发明实施例中的特征可以任意组合；而这些修改或者替换，并不使相应技术方案的本质脱离本公开各实施例技术方案的范围。

Claims (19)

  1. 一种图像的画质调节方法，其中，包括：
    显示待调节图像；
    获取所述待调节图像的画质参数，显示所述画质参数的当前值所对应的图例；
    获取所述画质参数的调节值，根据所述画质参数的调节值对所述待调节图像进行调节，得到调节后图像；
    显示所述调节后图像以及所述画质参数的调节值所对应的图例；
    获取图像保存指令，存储所述调节后图像。
  2. 如权利要求1所述的画质调节方法，其中，
    显示所述画质参数的当前值所对应的图例的同时，还显示所述画质参数的当前值所对应的提示文字；和/或，
    显示所述画质参数的调节值所对应的图例的同时，还显示所述画质参数的调节值所对应的提示文字。
  3. 如权利要求1所述的画质调节方法，其中，所述获取所述画质参数的调节值包括：
    显示所述画质参数的当前值所对应的图例的同时，还显示所述画质参数的预定值所对应的图标，所述画质参数的所述预定值所对应的画质优于所述当前值所对应的画质；
    获取图标选择指令；
    将所述图标选择指令对应的所述画质参数的预定值作为所述画质参数的调节值。
  4. 如权利要求1所述的画质调节方法，其中，所述显示所述调节后图像包括：
    原比例显示所述调节后图像的整体；和/或，
    放大比例显示所述调节后图像的局部，所述局部的画质优化程度大于所述调节后图像其他区域的画质忧化程度，或者，所述局部的画质劣化程度大于所述调节后图像其他区域的画质劣化程度。
  5. 如权利要求1所述的画质调节方法，其中，还包括：
    采集图像，将所采集的图像作为所述待调节图像；
    获取画质参数保存指令，存储所述画质参数的调节值用于下次图像采集。
  6. 如权利要求1所述的画质调节方法，其中，所述显示所述调节后图像以及所述画质参数的调节值所对应的图例之后，返回获取所述画质参数的调节值的步骤开始执行，直至获取图像保存指令。
  7. 如权利要求1所述的画质调节方法，其中，所述画质参数为饱和度、锐度、对比度的至少其中之一。
  8. 如权利要求7所述的画质调节方法，其中，所述饱和度对应的图例为颜色阶调图；所述锐度对应的图例为边缘轮廓图；所述对比度对应的图例为亮度对比图。
  9. 一种图像的画质调节系统，其中，包括：
    显示设备，用于显示待调节图像；
    输入设备，用于获取所述待调节图像的画质参数；
    所述显示设备还用于显示所述画质参数的当前值所对应的图例；
    所述输入设备还用于获取所述画质参数的调节值；
    处理器，用于根据所述画质参数的调节值对所述待调节图像进行调节，得到调节后图像；
    所述显示设备还用于显示所述调节后图像以及所述画质参数的调节值所对应的图例；
    所述输入设备还用于获取图像保存指令；
    所述处理器还用于存储所述调节后图像。
  10. 如权利要求9所述的画质调节系统，其中，
    所述显示设备显示所述画质参数的当前值所对应的图例的同时，还用于显示所述画质参数的当前值所对应的提示文字；和/或，
    所述显示设备显示所述画质参数的调节值所对应的图例的同时，还用于显示所述画质参数的调节值所对应的提示文字。
  11. 如权利要求9所述的画质调节系统，其中，所述显示设备显示所述画质参数的当前值所对应的图例的同时，还用于显示所述画质参数的预定值所对应的图标，所述画质参数的所述预定值所对应的画质优于所述当 前值所对应的画质；
    所述输入设备还用于获取图标选择指令；
    所述处理器还用于将所述图标选择指令对应的所述画质参数的预定值作为所述画质参数的调节值。
  12. 如权利要求9所述的画质调节系统，其中，所述显示设备用于原比例显示所述调节后图像的整体；和/或，放大比例显示所述调节后图像的局部，所述局部的画质优化程度大于所述调节后图像其他区域的画质忧化程度，或者，所述局部的画质劣化程度大于所述调节后图像其他区域的画质劣化程度。
  13. 如权利要求9所述的画质调节系统，其中，还包括：
    图像采集设备，用于采集图像；
    所述处理器还用于将所采集的图像作为所述待调节图像；
    所述输入设备还用于获取画质参数保存指令；
    所述处理器还用于存储所述画质参数的调节值用于所述图像采集设备的下次图像采集。
  14. 如权利要求9所述的画质调节系统，其中，所述画质参数为饱和度、锐度、对比度的至少其中之一。
  15. 如权利要求14所述的画质调节系统，其中，所述饱和度对应的图例为颜色阶调图；所述锐度对应的图例为边缘轮廓图；所述对比度对应的图例为亮度对比图。
  16. 如权利要求9所述的画质调节系统，其中，所述显示设备集成有输入功能，同时作为所述输入设备。
  17. 如权利要求13所述的画质调节系统，其中，所述图像采集设备为镜头。
  18. 一种自主移动平台，其中，搭载有如权利要求1至17任一项所述的画质调节系统。
  19. 如权利要求18所述的自主移动平台，其中，所述自主移动平台为无人机。
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