CAJ | 학술논문

圆形指针式仪表的倾斜，不利于仪表数字参数区域字符图像的定位和识别。提出一种基于检测仪表名称倾斜的方法来获得圆形指针式仪表的倾斜角度。该方法将仪表表盘上的仪表名称看成一个整体，结合Canny算子、形态学与Hough变换算子来检测其倾斜角度，然后根据该倾斜角度绕仪表表盘中心点对表盘进行旋转校正，使仪表参数区域字符回到固定位置，方便仪表数字参数区域字符的定位与提高数字字符识别的正确率。实验结果表明：该算法能快速准确地检测出圆形指针式仪表图像的倾斜角度，有一定的实用价值。
원형지침식의표적경사，불리우의표수자삼수구역자부도상적정위화식별。제출일충기우검측의표명칭경사적방법래획득원형지침식의표적경사각도。해방법장의표표반상적의표명칭간성일개정체，결합Canny산자、형태학여Hough변환산자래검측기경사각도，연후근거해경사각도요의표표반중심점대표반진행선전교정，사의표삼수구역자부회도고정위치，방편의표수자삼수구역자부적정위여제고수자자부식별적정학솔。실험결과표명：해산법능쾌속준학지검측출원형지침식의표도상적경사각도，유일정적실용개치。
The paper proposes a method of circular-pointer instrument tilt angle. The method is to presume the name of the instrument in dial as a whole, in combination with morphological operator and the Hough transform to detect the tilt angle, then to rotate for instrument calibration instrument dial center according to the tilt angle. The experimental results show that the algorithm can rapidly and accurately detect the circular-pointer instrument image tilt angle.