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

A technology of horizontal calibration and panoramic image, applied in the field of image processing, it can solve the problems of image or video distortion, image sticking to spherical panoramic mathematical model is not horizontal, etc.

Active Publication Date: 2017-07-07
SHENZHEN ARASHI VISION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

Examples

Experimental program
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Embodiment 1

[0020] see figure 1 The horizontal calibration method for a panoramic image or video provided in Embodiment 1 of the present invention includes the following steps:

[0021] S101. Receive images or video frames of two circles imaged by two cameras with opposite shooting directions;

[0022] S102. Obtain a horizontal calibration matrix during shooting;

[0023] S103. According to the horizontal calibration matrix, the images or video frames of the two circles are respectively attached to the left hemispherical surface and the right hemispherical surface of the spherical panoramic mathematical model through UV mapping, so that the panoramic image or video frame attached to the spherical panoramic mathematical model is horizontal.

[0024] In Embodiment 1 of the present invention, the order of S101 and S102 may be interchanged.

[0025] According to the UV mapping method of the prior art, the vertices of the spherical panoramic mathematical model and the UV mapping are in one-...

Embodiment 2

[0063] see figure 2 , the panoramic image or video level calibration system provided in Embodiment 2 of the present invention includes:

[0064] The receiving module 11 is configured to receive images or video frames of two circles imaged by two cameras with opposite shooting directions;

[0065] Obtaining module 12, used to obtain the horizontal calibration matrix when shooting;

[0066] Mapping module 13 is used to paste the images or video frames of two circles on the left hemispherical curved surface and the right hemispherical curved surface of the spherical panoramic mathematical model respectively by UV mapping according to the horizontal calibration matrix, so that the panoramic image attached to the spherical panoramic mathematical model Or the video frame is horizontal.

[0067] In the second embodiment of the present invention, the acquisition module is specifically configured to acquire the horizontal calibration matrix during shooting through the gyroscope and / ...

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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...

Claims

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Application Information

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IPC IPC(8): G06T5/00
CPCG06T5/006
Inventor 谢钰铭彭文学
Owner SHENZHEN ARASHI VISION CO LTD
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