Camera lens smoothing method and device and portable terminal

Abstract

The invention discloses a camera lens smoothing method which comprises the following steps: acquiring a current video frame and gyroscope information of a camera video, and calculating a current firstrotation matrix; carrying out smoothing processing on the first rotation matrix, and carrying out calculation to obtain a third rotation matrix; performing viewpoint decomposition on the video frameof the camera according to the third rotation matrix, and calculating a fourth rotation matrix; performing 3D rotation on the camera video frame according to the fourth rotation matrix, and reconstructing an anti-shake video, wherein smoothing processing is performed on the first rotation matrix, and calculation is performed to obtain a third rotation matrix, specifically, first smoothing is performed on the first rotation matrix to obtain a second rotation matrix; and calculating the third rotation matrix of the camera according to the limited smooth maximum amplitude. According to the invention, the attitude matrix of the camera is obtained through the gyroscope information of the camera, the smooth rotation matrix of the camera is calculated through smoothing processing, and the video is rotated, so that the self-adaptive smooth anti-shake effect of a camera lens is realized. In addition, the invention further discloses a device corresponding to the method, a computer readable storage medium and a terminal.

Description

[0001] This application is a divisional application of an invention patent application with an application date of July 23, 2019, an application number of 201910664290.2, and an invention title of "A Camera Lens Smoothing Method, Device, and Portable Terminal". technical field [0002] The invention belongs to the field of video, and in particular relates to a method, device and portable terminal for smoothing a lens of a sports camera. Background technique [0003] At present, when an action camera shoots a moving scene, it will cause the lens of the video to shake, which will affect the quality of the video and the viewing experience. Therefore, it is necessary to study a method for improving camera video lens shake. [0004] One of the current solutions is to use the pan-tilt to stabilize the camera to stabilize the shooting picture. The disadvantage of this solution is that the pan-tilt is large in size, and it does not completely solve the problem that the video is shak...

AI Technical Summary

Problems solved by technology

[0004] One of the current solutions is to use the pan-tilt to stabilize the camera to stabilize the shooting picture. The disadvantage of this solution is that the pan-tilt is large in size, and it does not completely solve the problem that the hand-held panoramic shooting equipment is shooting video. Video stabilization method for micro-nano satellites, authorized announcement number: CN106027852B" discloses a video stabilization method for micro-nano satellites, which aims to use only one attitude sensor on the built micro-nano satellite platform The gyroscope uses the physical information it acquires, combined with the video information captured by the tiny camera, to process the shaky video to achieve image stabilization. This method requires the use of video information for frame matching before and after, and the process is relatively complicated.

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