A chip designed in a 0.18 μm CMOS Image Sensor Technology (CIS) is presented which incorporates different pixel design alternatives for Active Pixel Sensor (APS). CIS technology improves characteristics such as sensitivity, dark current and noise, that are strongly layout dependent. This chip includes a set of pixel architectures where different parameters have been modified: layout of active d...

A CMOS 64× 64 pixel area image sensor chip using Sigma-Delta modulation at each pixel for A/D conversion is described. The image data output is digital. The chip was fabricated using a 1.2μm two layer metal single layer poly n-well CMOS process. Each pixel block consists of a phototransistor and 22 MOS transistors. Test results demonstrate a dynamic range potentially greater than 93dB, a signal...

In order to analyze the causes of star sensor performance degradation and attitude measurement accuracy reduction in space radiation environment, total ionizing dose effects on complementary metal oxide semiconductor (CMOS) are studied. By using an established outfield test system, Orion Nebula zenith direction sky imaged. Through experimental processes map data acquisition, point extraction ma...

An ultra-low power CMOS image sensor is designed for endomicroscope applications. The chip will be fabricated through Global Foundries 0.18μm standard CMOS process with 1V power supply. The total power consumption is 6μW for 96×96 array with 5fps frame rate, where global amplifier consumes 3.3 μW, 10-bit SAR ADC consumes 900nW at 50kS/s, and on-chip digital processing further reduces IO power c...

Robert Wodnicki, Gordon W. Roberts, Martin D. Levine Department of Electrical Engineering, McGill University, Montr eal, Qu ebec, CANADA, H3A 2A7 Abstract We describe the design and implementation of a CMOS foveated image sensor for use in mobile robotic and machine vision applications. The sensor is biologically motivated and performs a spatial image transformation from Cartesian to log-polar ...

A low power smart vision system based on a large format (currently 1KxlK) active pixel sensor (APS) integrated with a programmable neural processor for fast vision applications is presented. The concept of building a low power smart vision system is demonstrated by a system design, which is composed with an APS sensor, a smart image window handler, and a neural processor. The paper also shows t...

The first CMOS active pixel sensor (APS) with onchip column-parallel successive-approximation analog-to-digital converter (ADC) is reported. A 64 64 element CMOS APS implemented in a 1.2m n-well single-poly, double-metal process with 24m pixel pitch is integrated with a 64 1 array of column parallel successive approximation 8-b ADC’s. Good image quality was observed. The capacitively-coupled AD...

We present results from a prototype CMOS camera system implementing a multiple sampled pixel level algorithm (“Last Sample Before Saturation”) in real-time to create High-Dynamic Range (HDR) images that approach the dynamic range of CCDs. The system is built around a commercial 1280 × 1024 CMOS image sensor with 10-bits per pixel and up to 500 Hz full frame rate with higher frame rates availabl...

In this work, we demonstrate a portable optical CO2 sensor using CMOS image sensing with polarization signal isolation. Luminescent CO2 detection methods generally exhibit faster response time and increased sensitivity over the established commercial sensors (NDIR, electrochemical), but require bulky and expensive spectrophotometry equipment which confines them to a lab. Components used in our ...