1,721,132 research outputs found
CMOS Vision Sensors for Specific Applications
No full textThe need of process and quality control in many industrial fields is requiring the development of optical sensors taylored for specific applications. These sensors must be potentially low cost and possibly should integrate on the same die signal processing capabilities. Standard CMOS technology is therefore the technology to choose for satisfying these requirements. Two examples of application specific vision sensor are presented in this paper. The first is a focal plane array with very high dynamic range for the automotive industry, and the latter is a linear array with on board processing for a triangulation based 3D laser scanne
A Microsystem for Urodynamic Monitoring
No full textA signal conditioning CMOS integrated circuit, based on a relaxation oscillator, is proposed for use with a micro-machined resistive flow sensor, adopted for monitoring urinary dysfunctions. The resulting micro-system doesn’t need any small catheters, thus making the detection technique non-invasive for the patien
A novel pixel topology for on-the-fly programmable image processing
No full textA novel pixel topology for real-time programmable image processing is presented. The circuit can implement a large class of spatio-temporal filters over a 3times3 pixels kernel. The image processing is based on two fundamental operations: absolute value of a difference and signal accumulation of partial results. On-the-fly processing approach is used to perform image filtering over high dynamic-range images. The pixel, designed in a CMOS 0.35 mum technology, has square shape with a side of 32.5 mum, consists of 30 transistors and presents a fill factor of 24%
Scannerless 3D Imaging Sensors
No full textThis contribution describes the research activity on the development of different smart pixel topologies [1-6] aimed at three-dimensional (3D) vision applications exploiting the multiple-pulse indirect Time-Of-Flight (TOF) and standard direct TOF techniques. The proposed approaches allow for the realization of scannerless laser ranging systems capable of fast collection of 3D data sets, as required in a growing number of applications like, automotive, security, surveillance and robotic guidance. Single channel approach, as well as matrix-organized sensors, will be described, facing the demanding constraints of specific applications, like the high dynamic range capability and the background immunity. Real time range (3D) and intensity (2D) imaging of non-cooperative targets, also in presence of strong background illumination, has been successfully performed in the 2m-9m range with a precision better than 5% and an accuracy of about 1
A CMOS Vision Sensor with Integrated Analog Processing ICTS 2005
No full textICTS 2005 International Conference Sensing Technology, 21-23 Nov 2005, palmerston North, New Zealan
A CMOS Camera with Programmable Real-Time Processing
No full textA 128 times 64 pixels vision sensor is presented, performing on-the-fly spatio-temporal filtering with large flexibility in coefficient assignment. Its operating principle is based on two novel image processing techniques: time-based and pulse-based. The sensor architecture executes pixel-parallel processing, on a 3 times 3 pixel kernel, during integration time on images with dynamic-range up to about 100 dB. The square pixel has a pitch of 32.6 mum with a fill-factor of 24%. It consists of two analog memories and 30 transistors, most of them dedicated to the pixel connectivity. The chip was fabricated in a 0.35 mum CMOS technology and exhibits a total power consumption of 14 mW @ 3.3 V with a computing figure of 2.8 GOPS/mm
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