Environment light detection method, device and apparatus and storage medium

Abstract

Embodiments of the invention provide an environment light detection method, device and apparatus and a storage medium. The method comprises the following steps of: S100, obtaining a video flow, comprising a target object, acquired by an image acquisition device of the environment light detection apparatus; S200, outputting a light emitting indication signal, wherein the light emitting indication signal is used for indicating a light emitting device of the environment light detection apparatus to generate a light signal, intensity of which is in an initial intensity range, to serve as current illumination light, and the current illumination light is used for illuminating the target object; S300, selecting at least two video frames which are acquired in the process of generating the currentillumination light by the light emitting device, comprise the target objects and keep still from the video flow; and S400, determining intensity of environment light illuminated on the target object according to the intensity of the current illumination light in the time period of acquiring the at least two video frames and pixel values of areas where the target object is located in the at least two video frames. According to the method, device and apparatus and the storage medium, the intensity of environment light illuminated on objects can be correctly detected.

Description

technical field [0001] The present invention relates to the field of image processing, and more specifically relates to an ambient light detection method, device and equipment, an image quality judgment method, device and equipment, and a storage medium. Background technique [0002] In applications related to the recognition of objects such as faces, cards, or certificates on mobile phones, estimating the intensity of ambient light received by the object is very important for image quality judgment and signal extraction (such as heartbeat signals). [0003] However, the built-in light intensity sensor of the mobile phone can only measure the average intensity of all light in the field of view, and cannot locally estimate the intensity of ambient light on the object. Under conditions such as backlighting, there is a significant gap between the intensity of ambient light on an object and the average intensity of all light in the entire field of view. Therefore, a technique c...

AI Technical Summary

Problems solved by technology

[0003] However, the light intensity sensor that comes with the mobile phone can only measure the average intensity of all light in the field of view, and cannot locally estimate the intensity of ambient light on the object

Images