CAJ | 학술논문

由于变电站巡检机器人停靠位置和云台转动的偏差,拍摄所获得的图像中仪表位置会有较大不同.为解决图像中仪表的定位问题,文中提出了一种快速地利用边界提取椭圆形目标的方法,可有效地解决图像中圆形目标的提取.原有最小二乘椭圆拟合算法对图像边界上所有样本点都参与运算,所以会对椭圆拟合的最后结果产生偏差且耗时较长.针对这种情况,采取边界的最小二乘拟合算法,依次取图像边缘提取后的边界,逐段拟合椭圆,并对拟合出的椭圆进行评估,选取适合待检测目标的椭圆区域,具有快速高效、定位准确等特点.最后,通过合成图像和实际图像的应用验证了算法能够拟合出具有高精度的椭圆,能够有效地处理仪表表盘的提取.
유우변전참순검궤기인정고위치화운태전동적편차,박섭소획득적도상중의표위치회유교대불동.위해결도상중의표적정위문제,문중제출료일충쾌속지이용변계제취타원형목표적방법,가유효지해결도상중원형목표적제취.원유최소이승타원의합산법대도상변계상소유양본점도삼여운산,소이회대타원의합적최후결과산생편차차모시교장.침대저충정황,채취변계적최소이승의합산법,의차취도상변연제취후적변계,축단의합타원,병대의합출적타원진행평고,선취괄합대검측목표적타원구역,구유쾌속고효、정위준학등특점.최후,통과합성도상화실제도상적응용험증료산법능구의합출구유고정도적타원,능구유효지처리의표표반적제취.
It may have a certain bias between the device in the template image and new acquired image because of the deviation of the motion and mechanical error caused by PTZ(Pan-Tilt-Zoom) for mobile inspection robot. So how to locate the meter in a new acquired image is need to be solved. Present a fast elliptical target extraction method based on boundary that can effectively solve the extraction of the circular target in the image. The least squares ellipse fitting algorithm,all the sample points are involved in operations,so the final out-come produces the ellipse fitting bias and takes a long time. Adopt the least squares fitting algorithm based on the boundary,take the boundaries of the image edge extraction,piecewise fitting ellipse,ellipse and fitting out of the assessment,select the appropriate target to be detected elliptical area. Verifying the algorithm in the synthetic and actual image applications can fit oval with high precision,which can effectively deal with the extraction of the instrument dial.