Cartier ' s other timepiece revolution came in the form of " mystery clocks , " whose hands seemed to move independently of any mechanism at the center of a transparent dial 卡迪亚其他具有时代意义的革命以“神秘钟表”的形式出现，也就是使表针看起来好像脱离了它的机动系统而独立在表面上运转。
It will be remembered that the obstinate fellow had insisted on keeping his famous family watch at london time , and on regarding that of the countries he had passed through as quite false and unreliable 可是今天，虽然他从没有拔快或者倒拔自己的表针，但是却发现它和船上的大钟走得完全一样。
The computer acquires the image of dial gauge by high precision ccd video , after that the computer will process the dial gauge image by some image - processing algorithms such as image segmentations , edge searching , area segmentations and locating the pointer by the " circle " . at last the computer will recognise the dial pointer position and work out the precision of dial gauge in accordance with nation criterion of dial gauge . this study presents several optimum algorithms to realize quick recognition of the pointer and calibration lines of detected dial and improve the accuracy and real time quality of detecting 本系统由计算机控制步进电动机的运动，进而驱动指示表表针的运动，通过高精度ccd摄像机实时获取表盘图像数据，同时进行表盘图像的相关处理，包括阈值分割、边缘检测、图像锐化以及区域分割和定心圆检测等，最终快速识别出表盘指针所处位置，最后根据国家指示表类检定规程所制定的算法检定出指示表的各种精度，本系统所采用的图像处理算法运算量少，速度快，从而大大提高了系统的实时性。
In this system , the movement of the step - electromotor is controlled by computer , and then the dial pointer is drove by the step - electromotor . at the same time , these images of the analog instrument are took by high precision ccd video , and then these images will be processed by the computer , using some image - processing algorithms such as image segmentations , threshold identification , image binarization , areas labeling , dial center - point identification , useful areas identification & abstracting , and areas thinning , etc . followed this , the dial pointer of the “ circle ” is able to be located . at last , the dial pointer position will be recognized by the computer 本系统由计算机控制步进电动机的运动,进而驱动指针式仪表表针的运动,并且通过高精度ccd摄像机实时获取表盘图像数据,同时进行表盘图像的相关处理,包括图像分割,阈值确定,图像二值化,区域标记算法,圆心拟合,有效区域识别提取,区域细化等,最终快速识别出表盘指针所处位置;最后,根据国家指针式仪表类检定规程所制定的算法计算出该仪表的相关误差,检定指针式仪表的各种精度,通过这些数据判断该仪表是否合格,打印该仪表的检定结果报表。
