Ambient brightness detection method and device
A technology of environmental brightness and detection method, applied in image data processing, advanced technology, instruments, etc., can solve the problems of difficulty in detecting environmental brightness and automatic adjustment of mobile terminal screen brightness, etc., and achieve accurate and economical environmental brightness values. The effect of manufacturing cost
Active Publication Date: 2019-11-15
BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD +1
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Therefore, the light sensor is an indispensable hardware structure of the mobile terminal. If there is no light sensor, the automatic adjustment function of the screen brightness of the mobile terminal cannot be realized.
[0003] However, there are still some disadvantages in measuring the brightness of the environment through the light sensor
The essence of the light sensor is to detect the reflected light of the object. However, the dark object itself reflects less light. In this case, it is difficult for the light sensor to detect the brightness of the environment.
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[0093] Exemplary embodiments of the present application are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present application to facilitate understanding, and they should be regarded as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
[0094] According to the first embodiment of the present application, the present application provides a method for detecting ambient brightness, such as figure 1 As shown, the method includes:
[0095] S100: Perform color space conversion on each pixel of the acquired first environment image.
[0096] The first environment image may include an image directly collec...
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The invention discloses an ambient brightness detection method and device, and relates to the technical field of image recognition. The specific implementation scheme comprises: performing color spaceconversion on all pixel points of an obtained first environment image; obtaining initial brightness information of the first environment image according to the converted pixel points; obtaining contrast information of the first environment image; and obtaining an environment brightness value according to the initial brightness information and the contrast information of the first environment image. According to the invention, the brightness value of the real environment of the acquired environment image can be accurately calculated by using the acquired initial brightness information and contrast information of the first environment image.
Description
technical field [0001] The present application relates to the technical field of image processing, in particular to the technical field of image recognition. Background technique [0002] When the mobile terminal adjusts the brightness of the device screen, it needs to rely on the light sensor on the screen of the mobile terminal to detect the brightness of the environment, so as to adjust the screen brightness according to the detection result. Therefore, the light sensor is an indispensable hardware structure of the mobile terminal. Without the light sensor, the automatic adjustment function of the screen brightness of the mobile terminal cannot be realized. [0003] However, there are certain disadvantages in measuring the brightness of the environment through the light sensor. The essence of the light sensor is to detect the reflected light of the object. However, the dark object itself reflects less light. In this case, it is difficult for the light sensor to detect th...
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IPC IPC(8): G06T7/00G06T7/90
CPCG06T7/0002G06T7/90G06T2207/10004Y02D30/70
Inventor 陈轶博张峰陈果果
Owner BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD