System and method for measuring flight information of a spheric object with a high-speed stereo camera

摘要

The present invention relates to a method for automatically extracting a center point and a singular point of a spherical object necessary for measuring a flying speed, a flight direction, a rotational speed and a rotational axis of a spherical object in a flight information measurement system of a spherical object using a high-speed stereo camera, Markers or line-shaped markers of a specific pattern are automatically extracted from a general pattern such as a trademark and a logo on a spherical object as a center point and a singular point of a spherical object, To be measured. In the present invention, in order to automatically extract the center point and the singular point of the spherical object, only the pixels of the foreground image including the spherical object generated by excluding the motionless background image from each camera image are detected, We classify the connected pixels into independent cluster of pixels and then use only one pixel cluster with similar size to the actual spherical object for center point and singularity extraction to enable automatic extraction of center point and singularity point. In addition, the center point of the spherical object is directly calculated in the pixel cluster of the spherical object, and the brightness change and the structure of the corresponding image area in the pixel cluster of the spherical object are analyzed to automatically extract the singularity, .