Method and device for acquiring sliding zoom video

Abstract

The invention relates to the field of the image processing, and especially relates to a method and device for acquiring a sliding zoom video. The method comprises the following steps: acquiring initial distance between a target object and shooting equipment, wherein the shooting equipment is provide with multiple image collection units; generating a video including a target object through the common work of multiple image collection units, wherein an equivalent focal distance is provided when multiple image collection units work together; determining the current distance between the target object and the shooting equipment through multiple image collection units; and adjusting the equivalent focal distance when the multiple image collection units work together and continuously shooting thevideo based on the initial distance and the current distance, thereby acquiring the sliding zoom video. Through the method disclosed by the embodiment of the invention, the technical effect of acquiring the sliding zoom video in an intelligent, simple and low-cost way is realized.

Description

technical field [0001] The present invention relates to the field of image processing, in particular to a method and device for acquiring sliding zoom video. Background technique [0002] Dolly Zoom refers to the visual effect that zooming and camera position movement are carried out simultaneously during video shooting, but the space where the target object in the picture is located remains motionless. It is an in-camera special effect that disrupts normal visual perception to create a sense of unease. In related technologies, there are several ways to obtain a sliding zoom video: [0003] 1. Fix the ratio of the pixel height of the subject to the total pixels of the image, and manually adjust the optical zoom. The disadvantage of this method is that it must be equipped with a zoom lens. [0004] Second, separate the foreground and the background, the foreground (assuming the subject is the foreground) remains unchanged, and only the display size of the background is adj...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that since the separated foreground is fixed to the initial state, if the foreground changes, the change of the foreground during shooting cannot be reflected in the image

The disadvantage of this method is that an additional microlens array is required, and it also requires complex calculations

[0006] Therefore, in summary, the existing sliding zoom video cannot be obtained in a smart, simple and low-cost way

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