Tracking camera system for dynamic photogrammetry and automatic calibration method

Abstract

The invention relates to the field of digital close-range photogrammetry and computer vision, in particular to a tracking camera system for dynamic photogrammetry and an automatic calibration method. The system is provided with a tracking measurement camera with one rotational degree of freedom, and an exterior orientation element at the shooting moment of any frame of image is provided for the measurement camera through an automatic calibration mode of another auxiliary camera, so that the tracking camera can serve dynamic photogrammetry application in a large scene range under the condition that the tracking camera is not limited by photoelectric theodolite equipment.

Description

technical field [0001] The invention relates to the field of digital close-range photogrammetry and computer vision, in particular to a tracking camera system and an automatic calibration method for dynamic photogrammetry. Background technique [0002] Using a high-speed optical camera to capture a sequence of images of a moving target and then analyze the parameters of the target's motion state (such as the target's spatial position, attitude, and speed) is a method that is often used in practice. When the moving range of the target to be measured is large and the same static camera field of view cannot be effectively covered (for example, when measuring an aircraft target in the air or a moving actor, athlete's joint target, etc.), in order to enable the moving target to be able to Always keep in the field of view of the high-speed camera, it is usually necessary to rotate the high-speed camera along the moving direction of the target to realize the tracking shooting of th...

AI Technical Summary

Problems solved by technology

[0007] 1. As a precision optical device, the photoelectric theodolite is generally bulky, bulky, inconvenient to move, and long-distance transportation has a great impact on tracking accuracy;

[0008] 2. Photoelectric theodolite products are expensive, and the purchase and maintenance costs are relatively high;

[0009] 3. The calibration of the relative pose parameters between the photoelectric theodolite and the camera is relatively complicated

[0010] The above three points have limited the wide application of high-speed cameras in the field of dynamic photogrammetry within a large scene range to a certain extent.

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