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» Determining Image Origin and Integrity Using Sensor Noise
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MEDIAFORENSICS
2010
14 years 11 months ago
Managing a large database of camera fingerprints
Sensor fingerprint is a unique noise-like pattern caused by slightly varying pixel dimensions and inhomogeneity of the silicon wafer from which the sensor is made. The fingerprint...
Miroslav Goljan, Jessica J. Fridrich, Tomás...
CVPR
2005
IEEE
15 years 11 months ago
Why I Want a Gradient Camera
We propose a camera that measures static gradients instead of static intensities. Quantizing sensed intensity differences between adjacent pixel values permits an ordinary A/D con...
Jack Tumblin, Amit K. Agrawal, Ramesh Raskar
GW
2009
Springer
178views Biometrics» more  GW 2009»
14 years 7 months ago
Deictic Gestures with a Time-of-Flight Camera
We present a robust detector for deictic gestures based on a time-of-flight (TOF) camera, a combined range and intensity image sensor. Pointing direction is used to determine wheth...
Martin Haker, Martin Böhme, Thomas Martinetz,...
ICRA
1999
IEEE
136views Robotics» more  ICRA 1999»
15 years 1 months ago
The Arc-Transversal Median Algorithm: An Approach to Increasing Ultrasonic Sensor Accuracy
This paper describes a new method for improving the accuracy of range information using low resolution ultrasonic sensors mounted on a mobile robot. These sensors emit ultra-sound...
Keiji Nagatani, Howie Choset, Nicole A. Lazar
JMIV
2010
107views more  JMIV 2010»
14 years 4 months ago
Block Based Deconvolution Algorithm Using Spline Wavelet Packets
This paper proposes robust algorithms to deconvolve discrete noised signals and images. The solutions are derived as linear combinations of spline wavelet packets that minimize so...
Amir Averbuch, Valery A. Zheludev, Pekka Neittaanm...