Depth-of-field adjustment method and apparatus, terminal

Abstract

The invention discloses a depth-of-field adjustment method and apparatus, a terminal. The method comprises: focusing is carried out on a target object, a basic picture is collected and a current depth-of-field range is calculated; if the current depth-of-field range and a preset depth-of-field range is inconsistent, focusing is carried out at a front depth-of-field direction and/or a back depth-of-field direction of the target object so as to collect multiple pictures; and the collected pictures are superposed, and the clearly focused part is used for replacing the fuzzy part or the fuzzily focused part is used for replacing the clearly focused part to obtain a picture in the preset depth-of-field range. The method, apparatus and terminal have the following beneficial effects: customized control of the depth of field by the user can be realized and the high-definition imaging range can be controlled; better individualized picture effects including background blurring and foreground and background sharpness and the like can be realized during shooting and humanization is realized; the playability is high; and the shooting experience of the user can be substantially improved.

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.

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