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The use of remote sensing is necessary for monitor wide sea ice areas. However, since different scale sea ices often show similar
geometrical shapes and patterns like fractal, it is not easy for uns...
由于钢轨图像灰度分布不均，一般的图像分割法难以将目标从背景中分割出来，故本文提出了目标方差加权的类间方差阈值分割法对钢轨图像进行阈值分割。分析了钢轨图像的特点，总结了加权的目标方差(Otsu)方法及其它全局阈值分割法对钢轨图像分割存在的问题。然后，对Otsu方法进行改进，以目标出现的概率为权重，对类间方差的目标方差加权，使分割阈值靠近单模直方图的左边缘和双模直方图的谷底。最后，计算图像的错误分类误...
A 0.5p,m Pixel Frame-Transfer CCD Image Sensor in 110nm CMOS
A 0.5p,m Pixel Frame-Transfer CCD Image Sensor CMOS
2015/8/17
A 0.5p,m Pixel Frame-Transfer CCD Image Sensor in 110nm CMOS.
Architectures for High Dynamic Range,High Speed Image Sensor Readout Circuits
Architectures High Dynamic Range High Speed Image Sensor Readout Circuits
2015/8/17
The stringent performance requirements of many infrared imaging applications warrant the development of precision high dynamic range, high speed focal plane arrays. In addition to achieving high dynam...
An image sensor comprising an array of apertures each with its own local integrated optics and pixel array is presented. A lens focuses the image above the sensor creating overlapping elds of view bet...
Modeling and Simulation of Integrated Luminescence Detection Platforms
Luminescence probes Modeling CMOS sensor post-processing
2015/8/17
We developed a simulation model of an integrated CMOS-based imaging platform for use with bioluminescent DNA microarrays. We formulate the complete kinetic model of ATP based assays and luciferase lab...
CMOS image sensors have received much attention over the last decade, offering the promise of ultra low power and camera-on-chip integration in standard fabrication processes. This year over 30 millio...
SIMULTANEOUS IMAGE FORMATION AND MOTION BLUR RESTORATION VIA MULTIPLE CAPTURE
SIMULTANEOUS IMAGE MOTION BLUR RESTORATION MULTIPLE CAPTURE
2015/8/17
Advances in CMOS image sensors enable fast image capture, which makes it possible to capture multiple images within a normal exposure time. An algorithm that takes advantage of this capability by simu...
Active Pixel Sensors Fabricated in a Standard 0.18 urn CMOS Technology
CMOS APS image sensor dark current quantum efficiency photodiode photogate
2015/8/17
CMOS image sensors have benefited from technology scaling down to O.351um with only minor process modifications. Several studies have predicted that below O.25m, it will become difficult, if not impos...
Analysis of 1/f noise in CMOS APS
bthreshold operation nonstationary 1/f noise model time domain noise analysis CMOS APS image sensor
2015/8/17
As CMOS technology scales, the effect of 1/f noise on low frequency analog circuits such as CMOS image sensors becomes more pronounced, and therefore must be more accurately estimated. Analysis of 1/f...
Multiple Capture Single Image Architecture with a CMOS Sensor
Multiple Capture Single Image Architecture CMOS Sensor
2015/8/17
We describe a programmable digital camera sensor with pixel-level analog-to-digital conversion (ADC). The sensor, which was designed and implemented by our group, is programmable in the sense that the...
Comparative analysis of color architectures for image sensors
color digital camera image quality CMOS image sensors
2015/8/17
We have developed a software simulator to create physical models of a scene, compute camera responses, render the camera images and to measure the perceptual color errors (CIELAB) between the scene an...
Comparative Analysis of SNR for Image Sensors with Enhanced Dynamic Range
CMOS Image sensor CCD Wide Dynamic Range APS Pixel level ADC
2015/8/17
Dynamic range is a critical figure of merit for image sensors. Often a sensor with higher dynamic range is regarded as higher quality than one with lower dynamic range. For CCD and CMOS sensors operat...
Analysis of Temporal Noise in CMOS APS
emporal noise subthreshold operation reset noise shot noise CMOS APS image sensor
2015/8/17
Temporal noise sets a fundamental limit on image sensor performance, especially under low illumination and in video applications. In a CCD image sensor, temporal noise is well studied and characterize...
Characterization of CMOS Image Sensors with Nyquist Rate Pixel Level ADC
ixel level ADC dark current fixed pattern noise read noise QE
2015/8/17
Techniques for characterizing CCD imagers have been developed over many years. These techniques have been recently modified and extended to CMOS PPS and APS imagers. With the scaling of CMOS technolog...