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Optical-limiter MEMS dynamic range compression deconvolution

机译:光限制器MEMS动态范围压缩反卷积

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We propose dynamic range compression deconvolution by a new nonlinear optical-limiter microelectro-mechanical system (NOLMEMS) device. The NOLMEMS uses aperturized, reflected coherent light from optically addressed, parabolically deformable mirrors. The light is collimated by an array of microlenses. The reflected light saturates as a function of optical drive intensity. In this scheme, a joint image of the blurred input information and the blur impulse response is captured and sent to a spatial light modulator (SLM). The joint information on the SLM is read through a laser beam and is Fourier transformed by a lens to the back of the NOLMEMS device. The output from the NOLMEMS is Fourier transformed to produce the restored image. We derived the input-output nonlinear transfer function of our NOLMEMS device, which relates the transmitted light from the pinhole to the light intensity incident on the back side of the device, and exhibits saturation. We also analyzed the deconvolution orders for this device, using a nonlinear transform method. Computer simulation of image deconvolution by the NOLMEMS device is also presented.
机译:我们提出了一种新型的非线性光学限制器微机电系统(NOLMEMS)装置进行动态范围压缩反卷积。 NOLMEMS使用来自光学寻址,抛物线形可变形反射镜的穿孔反射相干光。光线通过微透镜阵列准直。反射光根据光驱强度而饱和。在该方案中,捕获了模糊的输入信息和模糊脉冲响应的联合图像,并将其发送到空间光调制器(SLM)。通过激光束读取SLM上的关节信息,并通过透镜将其傅立叶变换到NOLMEMS器件的背面。 NOLMEMS的输出经过傅立叶变换,以生成恢复的图像。我们推导了我们的NOLMEMS器件的输入输出非线性传递函数,该函数将来自针孔的透射光与入射到该器件背面的光强度相关联,并表现出饱和。我们还使用非线性变换方法分析了该设备的反卷积阶数。还介绍了由NOLMEMS器件进行的图像反卷积的计算机仿真。

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