本文分析院内2010年购置的医科达Synergy加速器非常见的两例故障:①高压脉冲调制器隔离板三路光纤同时无输出,原因为电光转换电源模块故障,通过更换MODULATOR ISOLATION UNIT PCB单元电路解决;②Gantry旋转角度显示不同步,原因为Gantry...本文分析院内2010年购置的医科达Synergy加速器非常见的两例故障:①高压脉冲调制器隔离板三路光纤同时无输出,原因为电光转换电源模块故障,通过更换MODULATOR ISOLATION UNIT PCB单元电路解决;②Gantry旋转角度显示不同步,原因为Gantry导向轨上的度数齿条缺齿,通过更换齿条解决。不同于前人文献所阐述的分析过程和故障原因,具有独特的研究、分享价值。另外,本文总结了加速器维修保养经验,以期为设备的维护工作提供参考。展开更多
A novel approach is proposed to automatically detect pomographic images with skin-like color background on the Intemet using the locations of human faces and bodies. It has two separate skin-color detection steps： th...A novel approach is proposed to automatically detect pomographic images with skin-like color background on the Intemet using the locations of human faces and bodies. It has two separate skin-color detection steps： the first one is to quickly detect the potential human skin-color regions; and the second one is to use an off-the-shelf face detector to locate a human face and then apply hypothesis testing based on series of assumptions which take into account the face-height ratio, body orientation and modem photograph composition common sense, etc. After that, a template matching method is used to further discriminate normal images or pornographic ones. Experimental results show that the proposed method has high precision and real time speed.展开更多
文摘本文分析院内2010年购置的医科达Synergy加速器非常见的两例故障:①高压脉冲调制器隔离板三路光纤同时无输出,原因为电光转换电源模块故障,通过更换MODULATOR ISOLATION UNIT PCB单元电路解决;②Gantry旋转角度显示不同步,原因为Gantry导向轨上的度数齿条缺齿,通过更换齿条解决。不同于前人文献所阐述的分析过程和故障原因,具有独特的研究、分享价值。另外,本文总结了加速器维修保养经验,以期为设备的维护工作提供参考。
文摘A novel approach is proposed to automatically detect pomographic images with skin-like color background on the Intemet using the locations of human faces and bodies. It has two separate skin-color detection steps： the first one is to quickly detect the potential human skin-color regions; and the second one is to use an off-the-shelf face detector to locate a human face and then apply hypothesis testing based on series of assumptions which take into account the face-height ratio, body orientation and modem photograph composition common sense, etc. After that, a template matching method is used to further discriminate normal images or pornographic ones. Experimental results show that the proposed method has high precision and real time speed.
