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首页> 外文会议>Conference on Infrared Technology and Applications XXVII Apr 16-20, 2001, Orlando, USA >High Resolution Focal-Plane Image Processing
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High Resolution Focal-Plane Image Processing

机译：高分辨率焦平面图像处理

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摘要

Two types of focal plane image processing chips are presented. They address the two extremes of the application spectrum: general purpose and application specific designs. They both exploit the promise of focal-plane computation offered by CMOS technology. The general-purpose computational sensor, a 16 X 16 pixels prototype (easily scalable to larger arrays), has been fabricated in a standard 1.2 μ CMOS process, and its spatiotemporal filtering capabilities have been successfully tested. An array larger than 300 X 300 array will use only 0.5% of the chip area for the processing unit while providing multiple spatiotemporally processed images in parallel. The 16 X 16 chip performs 1 GOPS/mW (5.5-bit scale-accumulate) while computing four spatiotemporal images in parallel. The application specific system realizes a hybrid imaging system by combining a 120 X 36 low-noise active pixel sensor (APS) array with a 60 X 36 current mode motion detection and centroid localization array. These two arrays are spatially interleaved. The APS array, which integrates photo-generated charges on a capacitor in each pixel, includes column parallel correlated double sampling for fixed pattern noise reduction. The current mode array operates in continuous time, however, the programmable motion detection circuit indicates if the intensity of light at pixel is time varying. The centroid, x and y position, of all time varying pixels is computed using circuits located at the edges of the array. Clocked at greater than 60 fps, the chip consumes less than 2mW.
机译：提出了两种类型的焦平面图像处理芯片。它们解决了应用范围的两个极端：通用和特定应用设计。他们俩都利用了CMOS技术提供的焦平面计算的希望。通用计算传感器是一个16 X 16像素的原型（可轻松扩展到更大的阵列），已通过标准的1.2μCMOS工艺制造，并且已成功测试了其时空滤波功能。大于300 X 300阵列的阵列将仅使用芯片面积的0.5％作为处理单元，同时并行提供多个时空处理的图像。 16 X 16芯片执行1 GOPS / mW（5.5位比例累加），同时并行计算四个时空图像。专用系统通过将120 X 36低噪声有源像素传感器（APS）阵列与60 X 36电流模式运动检测和质心定位阵列相结合来实现混合成像系统。这两个阵列在空间上交错。 APS阵列在每个像素的电容器上集成了光生电荷，并包括列平行相关双采样，以减少固定模式的噪声。当前模式阵列在连续时间内工作，但是，可编程运动检测电路会指示像素处的光强度是否随时间变化。使用位于阵列边缘的电路计算所有时变像素的质心，x和y位置。时钟频率高于60 fps，该芯片的功耗低于2mW。

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