CAJ | 학술논문

在对指针式仪表进行识别的过程中，Hough 变换被广泛应用于检测指针的位置，但其存储空间大、计算时间长的缺点让识别的过程效率降低很多。针对传统 Hough变换的缺点提出了一种改进的 Hough 变换，通过减小Hough变换的搜索范围来减小其存储空间和计算量，利用指针与表盘圆心之间的关系限定了 Hough 变换的累加量，从而大大减少了计算时间。将改进的 Hough 变换应用于指针式仪表的识别中，与传统的 Hough 变换识别速度进行了比较。实验结果表明：改进后的 Hough 变换可有效减少计算时间，提高识别效率。
재대지침식의표진행식별적과정중，Hough 변환피엄범응용우검측지침적위치，단기존저공간대、계산시간장적결점양식별적과정효솔강저흔다。침대전통 Hough변환적결점제출료일충개진적 Hough 변환，통과감소Hough변환적수색범위래감소기존저공간화계산량，이용지침여표반원심지간적관계한정료 Hough 변환적루가량，종이대대감소료계산시간。장개진적 Hough 변환응용우지침식의표적식별중，여전통적 Hough 변환식별속도진행료비교。실험결과표명：개진후적 Hough 변환가유효감소계산시간，제고식별효솔。
In the process of recognizing the pointer instrument, Hough transform is widely used to detect the position of the pointer,but disadvantages of the large storage space and the long calculating time make the recognition process inefficient. This paper studies the traditional Hough transform,proposes an improved Hough transform for its shortcomings. By reducing the searching scope of the Hough transform it reduces its storage space and computational complexity, and by the relationship between the pointer and dial center it limits the cu-mulative amount of the Hough transform,which significantly reduces the computation time. It applies the improved Hough transform to the pointer instrument of recognition, and compares with the traditional Hough transform recognition speed. Experimental results show that the improved Hough transform can effectively reduce the computation time and improve the recognition efficiency.