Portrait photographing optimization system, method and device based on automatic photometry

Abstract

The invention belongs to the technical field of image processing, and particularly relates to a portrait photographing optimization system, method and device based on automatic photometry. The systemcomprises a first judgment unit for judging whether a user triggers manual focusing or not and generating a first judgment result; a second judgment unit which is used for detecting the preview frameacquired by the camera, judging whether a human face is detected or not and generating a second judgment result; a third judgment unit which is used for judging whether short-distance portrait photographing is carried out or not and generating a third judgment result; a photometry unit which is used for controlling the camera to enter any one of a portrait photometry mode, an automatic photometrymode and a manual photometry mode according to the first judgment result, the second judgment result and the third judgment result. When a user performs selfie, the user does not need to know the operation with high manual focusing requirement, and meanwhile, the user can take pictures which are highlighted by himself / herself and layered compared with central average photometry.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to a portrait photography optimization system, method and device based on automatic light metering. Background technique [0002] The metering system of a digital camera generally measures the brightness of the light reflected from the subject, which is also called reflective metering. The light metering method can generally be divided into two ways: external light metering and internal light metering according to the different placement positions of the light metering elements. External light metering: In the external light metering mode, the optical path of the light metering element and the lens is independent. This metering method is widely used in head-up viewfinder lens shutter cameras, and it has sufficient sensitivity and accuracy. Single-lens reflex cameras generally do not use this metering method. Internal metering: This metering method is metering...

AI Technical Summary

Problems solved by technology

For those who like to take selfies, when they want to focus on themselves and make their faces have a sense of hierarchy, they need to manually measure the face, which increases the complexity of the operation and raises the threshold for selfies.

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