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Low-cost 3D image capture devices are enabling new applications in the gaming, robotics, automotive and surveillance industries. A number of approaches are competing for a share of these markets. Stereoscopic cameras employ intensive image processing to interpret distance from the correlation of two separate image streams [1], structured light systems analyse the deformation of pat terned light projected...
Conventional cameras capture 2D photographs at a single plane of focus. Acquisition of a 3D photograph with multiple planes of focus typically requires scanning the focus of a single camera, or using arrays of cameras or lenses. This paper demonstrates a 150kpixel image sensor, which captures 3D scenes. The chip is manufactured in commodity 0.18μm CMOS and requires only a single convex lens at a fixed...
Images of folding process was collected and on-line detection of folding dislocations is explored using characteristic points in these images, which reduces the computation time. First, determine the dislocation type through characteristic points in the images of a folding process. Then, through calibration the corresponding dislocation bias for the detected type of folding dislocation can be obtained...
As one of the most important part of the Concentrated Photovoltaic (CPV) system, the tracking accuracy and sensitivity of the solar tracker has a significant influence on the lighting rate and power generation rate of CPV system. The CPV solar tracker based on ARM tracks the sun mainly by using the CMOS sensor. In order to improve the tracking sensitivity, a method of sun spot center orientation based...
The paper is reviewing the new trends of the image sensing, the Super CCDs and the Backlit CMOS. One proposes a new HDR fuzzy-interpolative algorithm that can extend the dynamic range of a still Backlit CMOS image in the Super CCD SR manner: the fusion of two images, the first one with a normal exposure and the other underexposed.
This paper presents the design of an array of avalanche photodiodes (APD) in standard CMOS technology for a 3-D camera. The distance measurement is based on the time of flight principle, more precisely on the phase-shift measurement method. The pixel is operated in permanent sinusoidal regime based on optoelectronic mixing technique. Circuit simulations allowed the architecture validation and the...
A multi-spectral camera is introduced to make up the traditional defects in this article, which is sensitive to NIR, red and green lights. It is with three CMOS sensors to collect the lights in the three wave-lengths. Besides, an FPGA is used to serve as the control unit. The information collected is stored as BMP files into a Compact Flash™ card. The NIOS-II CPU provided by the Altera Corporation...
A configurable, record capacity extensible and nonuniformity reducible of high speed camera is designed in this paper. The CMOS image sensor lupa-300 which is produced by Cypress Corporation is used for the system. There is nonuniformity existed in the sensor. The two point method of the image with real time correction algorithm has applied to process the image nonuniformity. Then the corrected image...
A fast, low-complexity algorithm has been developed for the computation of the geometric moments of binary images derived from pictures taken by low-cost, low-power consumption CMOS cameras. The complete algorithm is executed on the limited CPU and RAM resources that are available in the microprocessor chip that comes integrated with this type of cameras. We intend to utilize this moment-based approach...
The mobile robot vision system is composed of linear structured light generator, CMOS camera and image processor based on DSP TMS320DM642. We use digital signal processor to design the vision processing system because of its high-speed performance and low power consumption. In this paper, a new coordinates establishing method based on linear structured light vision system is proposed to simplify the...
Based on computer image processing, give a new method on helicopter rotors pyramid angle by CMOS -Camera. give a overall design of the system, compare image results with different camera's location and analyze the system's qualitative error. design a synchronized system by external synchronized pulse in order to catch the accuracy image and calculate the blade's height differences by filter and edge...
This paper describes an ongoing research program aimed to develop a network of low-cost, low-power consumption CMOS cameras whose main function is to determine, within a typical house or office room, the posture of a human body, i.e. standing, sitting, or laying down. Fast, low-complexity algorithms have been developed which can be implemented on the limited CPU and RAM resources that are available...
This paper introduces the design of a high-speed 2K times 2K CMOS imaging system that is part of a Wide Field Monitor System proposed in China recent years. The CMOS sensor used in this imaging system is LUPA-4000 from Cypress corp. This CMOS camera is composed of an analogue system and a digital embedded system. The digital embedded system integrated with an NIOS II soft-core processor serves as...
Here, we present a logarithmic CMOS imager for emissivity-compensated thermography, having thermally-stable and optimized inorganic multilayer integrated filters and a pixel cell containing a subthreshold load transistor with optimized device layout, providing VGA resolution, 40fps, a measuring temperature range of 600 degC to 3000 degC, and a temperature resolution of ~5 degC.
We designed new photodiodes sensors including current mirror amplifiers. These photodiodes have been fabricated using a CMOS 0.6 micrometers process from Austria Micro System (AMS). The photodiode areas are respectively 1 mm ?? 1 mm and 0.4 mm ?? 0.4 mm with fill factor 98% and total chip area is 2 square millimetres. The sensor pixels show a logarithmic response in illumination and are capable of...
A novel imaging technique is proposed for fully digital detection of phase and intensity of light. A fully integrated camera implementing the new technique was fabricated in a 0.35 mum CMOS technology. When coupled to a modulated light source, the camera can be used to accurately and rapidly reconstruct a 3D scene by evaluating the time-of-flight of the light reflected by a target. In passive mode,...
Dynamic range is a very important figure of merit to an imaging system since it decides the range of brightness we can observe. The paper first introduces the design of a CMOS sensor, which achieves high dynamic range by its dual slope response. And then a model is established to illustrate how the dual slope response works. A method to reconstruct the acquired image from multi-slope response to linear...
This paper is designed for the 2nd Freescale Cup National Undergraduate Smart Car Competition. With MC9S12DG128 single chip and smart car model supplied by the committee, a CMOS image sensor is applied to detect the black track on white raceway, which extends the detection range and is helpful to predict the forward path. In this paper, ten-line pixels in an image are analyzed to locate the black...
The study of cellular function and response is essential for basic research and for applications in the fields of biomedicine and biotechnology. We have developed the first 256-pixel proton camera array for imaging the hydrogen ion activity of cells grown in vitro. The proton camera is an integrated sensor array technology, designed and fabricated in a standard commercial 0.35 mum complementary metal...
This paper reports a custom CMOS light sensor which can be used in a pyramid wavefront sensor based adaptive optics system for eye imaging. A pyramid sensor produces four pupil images and therefore, this CMOS light sensor consists of 4 arrays of 32 times 32 active reset pixels with synchronous analogue outputs. In an eye imaging adaptive optics system the light available for wavefront sensing is of...
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