Development of the Correlation Image Sensor and Its Application to Pattern Imaging Technology

[1]相关图像传感器的研制与评价1)200×200像素的CIS是用VDEC提供的0.35um工艺开发的。基本功能得到充分确认。[2]新成像技术的发展1)法向成像：通过调制三次照明将法向转换为反射光的强度。然后对其幅值和相位进行实时解调，并重建法向矢量图。该系统还扩展到非朗伯物体。2)外差莫尔实时三维成像仪：利用空间位相调制照明将空间信息转换为光强的位相。然后，CIS实时解调投射光的相位。3)外差振动测量：利用调制器…将振动模式转换为反射光的强度更多EDD结构光。4)偏振成像仪：利用旋转偏振器将偏振光转换为光强。然后，CIS解调偏振信息。成像椭偏仪采用两个旋转偏振器，分别放置在入射光路和出射光路上。5)实时光学相干层析成像仪：利用白光干涉实现极高的深度分辨率。相关图像传感器使白光干涉的包络和相位可视化成为可能，而不需要任何深度扫描。6)非自主眼动视觉：提出了通过振动图像传感器或聚焦透镜来提取特征的方法。通过选择合适的参考信号，可以在一帧内提取出所需的特征。7)锁相式磁光成像仪：提出了一种基于CIS的钢板漏磁检测方法。该系统可以观察到交流磁场的幅值和相位分布。[3]图像处理和理解1)基于3D信息的人脸识别：使用我们的正常矢量成像系统采集的人脸图像来识别每个人。它的特征是1)对环境照明稳健，2)不依赖于面部的方向。较少

[1]Development and Evaluation of the Correlation Image Sensor1)The 200x200 pixels CIS was developed using 0.35um CMOS process provided by VDEC. The basic functions were fully confirmed. Plenty of data for improving the accuracy were obtained.[2]Development of Novel Imaging Technologies1)Normal Vector Imaging : Normal vector is converted to the intensity of the reflected light by using modulated tri-illumination. Then CIS demodulates its amplitude and phase in real-time and normal vector map is reconstructed. This system was also extended to the non-Lambertian object.2)Heterodyne Moire Realtime 3-D Imager : The space information is converted to the phase of the light intensity by using spatially phase-modulated illumination. Then CIS demodulates phase of the projected light in real-time. The new phase-unwrapping using time-domain constraint was also proposed.3)Heterodyne vibration measurement : The vibration pattern is converted into the intensity of the reflected light by using modulat … More ed structured light. Then CIS demodulates vibration amplitude and phase simultaneously with reference signals of the beat frequency.4)Polarimetric Imager : The polarization is converted into the intensity by using rotating polarizer in front of the CIS. Then CIS demodulates polarization information. The imaging ellipsometer was also proposed which utilizes two rotating polarizer putted in the incident path and outgoing path respectively.5)Real-time Optical Coherence Tomographic Imager : The very high resolution in depth was implemented by white light interference. The correlation image sensor makes it possible to visualize the envelope and phase of the white light interference without any scanning in depth.6)Involuntary eye-movement vision : The feature extraction method by vibrating the image sensor or the focusing lens was proposed. By choosing reference signal appropriately, desired features can be extracted in a single frame.7)Lock-in magneto-optical imager : Leakage flux inspection of the steel plate by using CIS was proposed. This system can observe the distribution of both amplitude and phase of AC magnetic field.[3]Image Processing and Understanding1)Face recognition using 3D information : Facial images captured by our normal vector imaging system are used to recognize each person. Its features are 1)robust to the ambient illumination and 2)non-dependency on the orientation of the face. Less