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Panorama video posture calibrating method

A technology of panoramic video and calibration method, which is applied in the direction of TV, color TV, closed-circuit television system, etc. It can solve the problems that the panoramic image imaging has a great influence, affects the viewing effect, increases the cost of equipment, etc., and achieves friendly interface and good visibility , the effect of strong applicability

Active Publication Date: 2016-07-27
成都易瞳科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since this type of panoramic equipment monitors 720° around the monitoring point indiscriminately, the installation position of the equipment has a great influence on the imaging of the panoramic image formed by the collected images. Deviation will affect the viewing effect
In actual engineering practice, the panoramic attitude position is usually obtained by installing a gyroscope, but since the commonly used panoramic surveillance camera is installed in a fixed position, the attitude information obtained by the gyroscope is often only used for the camera installation and initialization. Subsequent operation will always maintain the same calibration attitude position, which is basically no longer used, so the installation of gyroscope calibration method increases the cost of equipment, which is not conducive to application promotion

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0058] Realization of panoramic video attitude calibration method by sliding bar control technology

[0059] The sliding bar controls the input deviation angle by designing a set of sliding bars in the program user interface, where the two sliding bars correspond to the two components α and β of the deviation angle. In practical application, by changing the data of the sliding bar, the posture of the panoramic spherical image is also changed accordingly. Specifically, when changing the position of the slider of the slider, the current slider corresponds to an input value, subtract the attitude deviation value of the corresponding slider from the attitude angle of the panoramic spherical picture, and observe the displayed panoramic picture, when changing the position of the slider When the direction of the object in the screen is consistent with the tilt direction of the actual object, the corresponding value on the corresponding slide bar is the deviation angle of the attitude...

Embodiment 2

[0061] Panoramic video pose calibration method by changing the deviation angle through input devices and human interaction

[0062] When the attitude angle of the spherical picture is changed through manual interaction through input devices (such as mouse, touch screen), etc., the information (xd, yd) and the actual device pixel size (W S ,H S ) and viewpoint coordinates Z e , converted to the rotation angle of the sphere (only for x-axis and y-axis rotation) and displayed by dragging the screen to the front of the image, where the angle of the dragged screen relative to the screen changes as follows:

[0063]

[0064] Among them, Ze represents the coordinate value on the z-axis in the viewing frustum coordinate system of the observation point, and R represents the radius of the panoramic spherical image in the coordinate system.

[0065] First paste it at the lowest point directly below the vertical space of the camera in the actual scene Figure 6 For the marked patter...

Embodiment 3

[0068] By using image processing technology to automatically identify the calibration points to realize the method of panoramic video attitude calibration

[0069] Aiming at the drawbacks of manually aligning the calibration points, image processing technology is used here to automatically identify the spatially lowest calibration points in the screen. The calibration map is Figure 6 The size shown is a 2*2 checkerboard grid, where the middle point C is the calibration point. The recognition of the calibration point is realized through the recognition of the checkerboard.

[0070] First paste it at the lowest point directly below the camera in the actual scene Figure 6 For the marked points shown, the size of the checkerboard is 20cm*20cm, and the pasting point is only 1-1.5m away from the camera;

[0071] Secondly, the corner points in the image are extracted through Harris corner point detection. Since the corner points of the standard 2*2 checkerboard grid are 5 corner...

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Abstract

The invention discloses a panorama video posture calibrating method.The method comprises the steps that a panorama video image is acquired, a spherical image is generated and displayed, initial posture information and target posture information are acquired, the target posture definite position is set, and the top point or lowest point of the panorama spherical image and the position over or under a scene are adopted as set targets to acquire posture angle information, and a deviation angle is recorded; the current posture angle is corrected through the deviation angle obtained through the real-time panorama spherical image, and displayed.When panorama image acquiring equipment is mounted and used, the mounting position and posture do not need to be considered, the equipment can be used without obstacles, no additional posture sensor is needed, economical, efficient and fast posture calibration can be achieved, the panorama image acquiring equipment mounted at different positions can carry out displaying with the correct posture view angle, and especially in the field of security and protection monitoring, the method has better visuality, the interface is more friendly, and higher practicality is achieved.

Description

technical field [0001] The invention belongs to the technical field of video monitoring, in particular to the technical field of panoramic video assisted browsing, and particularly relates to a panoramic video posture calibration method, specifically for panoramic video browsing initialization posture calibration, which is for panoramas with a horizontal 360° viewing angle and a vertical 360° viewing angle (720°) It is a correction technology for image angle deviation caused by shooting angle during browsing and playing of panoramic) video. Background technique [0002] In the field of video surveillance technology, such as in the security video surveillance industry, in order to monitor the 720° panorama without dead angle around the monitoring point, an effective method is to use 720° panorama video surveillance equipment, this type of The monitoring equipment adopts an integrated panoramic acquisition solution, which effectively completes the real-time, synchronous and no...

Claims

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Application Information

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IPC IPC(8): G06T7/00H04N5/232H04N7/18
CPCH04N7/18G06T2207/10016G06T2207/30232H04N23/80G06T3/06
Inventor 张恩泽赖文杰胡志发成茵余黎
Owner 成都易瞳科技有限公司
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