Arashi Vision Inc.

Jinlin Cai

Wenjie Jiang

Jingkang Liu

Cong Chen

Pengwei Lyu

The present invention is applicable to the technical field of panoramic videos. Provided are a panoramic video clip method, apparatus and device, and a storage medium. The method comprises acquiring a panoramic video photographed by means of a panoramic camera, and recording an advancing-direction viewing angle of the panoramic camera during moving photographing; carrying out a frame extraction operation on the acquired panoramic video to obtain a corresponding panoramic video frame, carrying out significant target detection on the panoramic video frame, tracking a detected significant target by using a preset target tracking algorithm, and acquiring a viewing angle at which the tracked significant target is located; and clipping the panoramic video according to the advancing-direction viewing angle and the viewing angle at which the significant target is located, so as to generate a target video corresponding to the panoramic video. A panoramic video is automatically clipped, and the fluency of transitions, and the effectiveness and the degree to which content in a target video is interesting are also ensured.

Panorama video editing method, apparatus,device and storage medium

Provided are an automatic video editing method and a portable terminal, the method comprising: obtaining a video to be edited; extracting key frames of the video to be edited; inputting the key frames to a pre-trained scene classification method and a pre-trained target detection method, and respectively obtaining scene type markers and target object markers of the key frames; selecting multiple video segments from the video to be edited which satisfy preset editing criteria; respectively calculating average scores of the multiple video segments by means of a pre-trained image quality scoring method; respectively obtaining the video segment having the highest average score of each shot type for splicing.

Automatic video editing method and portable terminal

The present invention relates to the field of panoramic cameras, and provides a method for tracking a target in a panoramic video, and a panoramic camera. The method is used to track a target in a panoramic video on the basis of a multi-scale correlation filter, and employs automatic electronic pan-tilt-zoom technology. The present invention provides more robust tracking, faster processing speeds, a greater range of application in different tracking scenarios, and can be used to ensure that a tracked target is always at the center of the screen.

Method for tracking target in panoramic video, and panoramic camera

The present invention is applicable to the field of videos. Provided are an anti-shake method and apparatus for a panoramic video, and a portable terminal. The method comprises: acquiring, in real time, a current state timestamp, an accelerometer numerical value and an angular velocity numerical value of a gyroscope in a portable terminal; performing estimation using extended Kalman filtering combined with the accelerometer numerical value and the angular velocity numerical value to obtain an amount of rotation of the portable terminal to a world coordinate system; synchronizing the timestamp of the gyroscope with a timestamp of a panoramic video frame; performing quaternion interpolation on the state of the gyroscope to acquire a rotation matrix corresponding to the panoramic video frame; and rotating a panoramic image according to the current rotation matrix to generate a stable video frame.

Anti-shake method and apparatus for panoramic video, and portable terminal

Disclosed in the present invention are an image purple fringe eliminating system, method, a computer-readable storage medium, and a photographing device. The system traverses an image, calculates a hue of a pixel, counts a ratio of purple hue to adjacent purple hue pixels in the image, and calculates a dynamic purple fringe detection threshold; creates a mask with the same size as the image acquired by an image acquisition module, and detects the pixels that fall into a purple fringe area; corrects the detected pixel falling into the purple fringe area, correcting both a red channel intensity value and a blue channel intensity value of the pixels within the purple fringe region using a green channel intensity value. The invention can automatically correct the purple fringe of the image, improve the image shooting quality and the user experience.

Image purple fringe eliminating system, method, computer-readable storage medium, and photographing device

The present application is applicable in the field of videos. Provided are a method and system for panoramic video stabilization, and a portable terminal. The method comprises: acquiring in real time the timestamp of a current state, an accelerometer count value, and an angular velocity value of a portable terminal; estimating the rotation vector of the current state by utilizing an Extended Kalman Filtering combined with the accelerometer count value and the angular velocity value; calculating a current rotation matrix via the Rodrigues' rotation formula on the basis of the rotation vector of the current state; and rotating a panoramic image on the basis of the current rotation matrix and producing a stabilized video frame. The present invention allows the stabilization of a jittering video frame and alleviates VR motion sickness.

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Shenzhen, China

Jinlin Cai