Depth of Field Adjustment Method, Device and Terminal

Abstract

The invention discloses a depth of field adjustment method, device and terminal. The method includes: focusing on a target object, collecting a basic picture and calculating the current depth of field range; if the current depth of field range is inconsistent with the preset depth of field range, the focus in the foreground depth direction and / or rear depth-of-field direction to collect multiple pictures; superimpose the collected multiple pictures, replace the blurred part with the in-focus part or replace the in-focus part with the in-focus part to obtain Get a picture with a preset depth of field range. The beneficial effect of implementing the present invention is to realize the user-defined control of the depth of field and control the range of clear imaging; it can be used to take more personalized photo special effects, such as blurred background, clear front and rear scenes, etc., which is more humanized and can be More playability, greatly improving the user's shooting experience.

Description

technical field [0001] The present invention relates to the field of image capture, and more specifically, to a depth of field adjustment method, device and terminal. Background technique [0002] Utilizing the mobile phone camera to take images is more and more popular among users. However, due to the depth of field when shooting, the obtained image will not be completely clear. Objects can be clearly imaged on the imaging surface only within a limited distance before and after the focus point of the camera. This distance that can form a clear image is the depth of field. [0003] The depth of field is determined by three factors: the focal length of the lens, the aperture value and the shooting distance. For mobile phone cameras, due to hardware limitations, the aperture and focal length are fixed, and the only way to change the depth of field is to change the shooting distance. However, this change in depth of field is achieved by changing the focus point, and the dist...

AI Technical Summary

Problems solved by technology

For mobile phone cameras, due to hardware limitations, their aperture and focal length are fixed. To change the depth of field, only by changing the shooting distance

However, this change in depth of field is achieved by changing the focus point. The distance at which the image can be clearly imaged has not actually been changed, and the resulting image is only clear within a limited distance before and after the focus point.

[0004] Therefore, when the existing mobile phone camera is used to shoot the target object, the depth of field is fixed after the focus is achieved, and the user cannot adjust the depth of field (for example, increase or decrease) to increase or decrease the distance of clear imaging

[0005] Therefore, the mobile phone camera in the prior art has a fixed depth of field, which cannot meet the needs of photographers, is not humanized enough, and affects user experience.

Images