Backlight photographing method and device

A technology for backlighting and capturing images, applied in the field of information, can solve problems such as low quality, inability to extract features, and blurred images.

Active Publication Date: 2016-03-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when shooting in a backlit scene, when the backlit surface of the face area in the image obtained based on face detection is relatively large, the face is darker than the objects in the surrounding environment, making the skin color of the f

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  • Backlight photographing method and device
  • Backlight photographing method and device
  • Backlight photographing method and device

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Embodiment Construction

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0023] When taking photos of people in backlit scenes, due to the large light ratio between the light-receiving surface and the backlight surface of the object being photographed, the contrast is strong, and the images obtained based on face detection are prone to underexposure of people, showing the phenomenon of dark faces. The technical solutio...

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Abstract

The invention provides a backlight photographing method and device, and the method comprises the steps: detecting whether a photographed scene is photographed in a backlight manner or not; determining the size of a head-shoulder region corresponding to a portrait of a photograph object in the photographed scene through head-shoulder detection if the photographed scene is photographed in the backlight manner; determining the distance from the portrait to a camera according to the size of the head-shoulder region, automatically focusing the head-shoulder region in the portrait according to the distance, and photographing and obtaining a first image; The method and device can effectively detect the head-shoulder region in the portrait in the backlight scene through head-shoulder detection, can achieve the automatic photographing of a clear image of the head-shoulder region in the backlight scene, and cannot cause a black face phenomenon because of poor exposure of a person.

Description

technical field [0001] The present invention relates to the field of information technology, in particular to a backlight photographing method and device. Background technique [0002] With the improvement of shooting technology of cameras and terminals, especially smart shooting terminals, people have higher and higher requirements for the quality of captured images, especially when shooting in backlit scenes. Among them, when shooting in a backlit scene, the light-receiving surface of the object to be photographed is smaller than the backlight surface, so that the light ratio between the light-receiving surface and the backlight surface of the object to be photographed is large, and the contrast is strong. [0003] At present, autofocus based on face detection is widely used in cameras and terminals. Face detection is performed on the subject when shooting, and the distance between the subject and the camera is determined according to the size of the face in the image, so ...

Claims

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Application Information

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IPC IPC(8): H04N5/232H04N5/235
CPCH04N23/62H04N23/611H04N23/71H04N23/73
Inventor 冯伟陈茂林刘金晓
Owner HUAWEI TECH CO LTD
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