Double-camera after-shooting focusing imaging device and method

Abstract

The invention provides a double-camera after-shooting focusing imaging device and method. The double-camera after-shooting focusing imaging device is provided with double cameras which are arranged on a portable device. The double cameras respectively are the main camera and the auxiliary camera. The double-camera after-shooting focusing imaging device is further provided with a background control module. After a user selects a scene, the background control module adjusts shooting parameters of the double cameras according to shooting data of a user focusing region, then the main camera and the auxiliary camera simultaneously shoot and acquire two images respectively with a certain distance in front of a focal point, set by the user, in the focusing region and a certain distance behind a focal point, set by the user, of the focusing region as respective focal points, after-shooting focusing is achieved through an image processing algorithm, and then clear imaging with the large depth of fields is output. After imaging, the user can conduct secondary focusing within a certain range near the actual imaging focal points, and therefore the problems that small-range focal point deviation is generated because of mal-operation in the shooting process, so that imaging defocusing blurring is caused, and refocusing for shooting is needed are solved.

Description

technical field [0001] The present invention relates to an imaging device and method, in particular to a post-shooting focusing imaging device and method based on dual cameras. Background technique [0002] Existing portable devices, such as mobile phones, generally use a single camera for fixed-focus photography and imaging. However, according to the different aperture sizes of the single camera lens, its focal point presents a clear characteristic in a corresponding range of different sizes, and this range is fixed and cannot be changed after imaging. Such as figure 1 As shown, when a single camera is used for imaging, the depth of field range is 2.5m before and after the focal point, and target images outside this depth of field range will be out of focus, resulting in blurred imaging. [0003] Therefore, when the focus point deviates before taking a picture, the target image that the user needs to image will be partially out of focus and blurred. In most cases, this f...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem that the existing portable device camera adopts single-camera fixed-focus photography and imaging, it is easy to cause small-scale focus deviation due to misoperation, resulting in out-of-focus and blurred imaging parts

[0005] The present invention proposes a dual-camera post-shooting focusing imaging device and method, which enables the user to refocus within a certain range near the actual imaging focus after imaging, thereby solving the small-scale focus deviation caused by misoperation The image is out of focus and blurred, and a technical problem that requires refocusing

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