This paper describes the implementation of a CMOS image sensor that performs a two-way rectified temporal high-pass filtering operation on the incoming visual signal. The sensor adapts to background illuminance and responds to local positive and negative illuminance transients at separately coded terminals. The transients are converted into a stream of asynchronous binary pulses, which are mult...

The ultimate purpose of the image sensor is to obtain the clear image, especially the clear image we see. However, the jaggy which appears at the edge of the object in the image, which is composed of some pair of pixels, and it becomes the serious factor to defect the clearness of the image, since our eye severely perceives such jaggy, and it cannot be intrinsically eliminated by increased numb...

2 A Prototype of An Inertial System In mobile systems the position and attitude of active vision system's cameras can be hard t o determine. Inertial sensors coupled t o the active viston sys tem can provide valuable information, as happens with the An inertial system prototype was built using lowcost inertial sensors. These include a three-axial accelerometer, three gyroscopes and a dual-axis ...

The paper considers detecting and tracking multiple moving objects in real time by a multiagent active vision system. The main objective of the envisioned system is to maintain an explicit comprehensive representation of the scene by combining individual views obtained from several autonomous observer nodes. In order to allow for a near real time performance, each observer agent has been assign...

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...

The implementation of imaging arrays for System-On-a-Chip (SOC) is aided by using faulttolerant light sensors. Fault-tolerant redundancy in an Active Pixel Sensor (APS) is obtained by splitting the photodiode and readout transistors into two parallel operating devices, while keeping a common row select transistor. This creates a redundant APS that is self-correcting for most common faults. Simu...

A smart ultra-low power CMOS image sensor comprising an analog programmable processor array is reported. Compact and efficient motion detection algorithms are implemented to process sub-sampled images made of so-called macropixels. Only Regions of Interest (ROI) consisting of macropixels containing moving objects are read out. This drastically reduces power consumption: the 110×240 pixel image ...

The development of Monolithic Active Pixel Sensors for the CBM vertex detector is mainly driven by two issues: the read-out speed and the tolerance to non-ionising radiation. Significant progress was achieved in 2005 in these two areas, as well as for the tolerance to ionising radiation and for the sensor thinning [1, 2]. Simulation studies were also performed in order to optimize the design of...

In this paper, we present methods to detect and recover from sensor failure in dense wireless sensor networks. In order to extend the lifetime of a sensor network while maintaining coverage, a minimal subset of the deployed sensors are kept active while the other sensors can enter a low power sleep state. Several distributed algorithms for coverage have been proposed in the literature. Faults a...