Panoramic image or video horizontal calibration method, panoramic image or video horizontal calibration system and portable terminal

Abstract

The invention is applicable to the image processing field, and provides a panoramic image or video horizontal calibration method, a panoramic image or video horizontal calibration system and a portable terminal. The method comprises steps: images or video frames of two circles after imaging of two cameras with opposite photographing directions are received; a horizontal calibration matrix in the case of photographing is acquired; and according to the horizontal calibration matrix, the images or the video frames of two circles are pasted to a left hemisphere surface and a right hemisphere surface of a spherical panoramic mathematical model in a UV mapping mode, and thus, the panoramic image or the video frame pasted to the spherical panoramic mathematical model is horizontal. When an image or a video frame photographed by a panoramic camera is not horizontal, the panoramic image or the video frame pasted to the spherical panoramic mathematical model is still horizontal.

Description

technical field [0001] The invention belongs to the field of image processing, and in particular relates to a horizontal calibration method, system and portable terminal of a panoramic image or video. Background technique [0002] The prior art has a panoramic camera that uses a double fisheye wide-angle camera to shoot images or videos. After imaging, it is an image or video frame of two circles. A spherical panoramic mathematical model and a UV mapping method are used to image the two circles through the UV mapping method. They are respectively attached to the left and right hemispherical surfaces of the spherical panoramic mathematical model. When the panoramic camera is shooting vertically, the UV mapping method can make the rendering effect of the playback horizontal. The UV mapping method refers to the process of creating UVs for a surface. This process includes creation and editing, and the result is to explicitly determine how the image will be displayed on the 3D mo...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method, system and portable terminal for calibrating the level of a panoramic image or video, aiming to solve the problem that when the image or video frame taken by the panoramic camera in the prior art is not horizontal, the image will be stuck to the The mathematical model of the spherical panorama is not horizontal, and the image or video rendered by the panoramic camera is distorted.

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