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DPHOTO
2009
137views Hardware» more  DPHOTO 2009»
13 years 4 months ago
Sensor information capacity and spectral sensitivities
In this paper, we numerically quantify the information capacity of a sensor, by examining the different factors than can limit this capacity, namely sensor spectral response, nois...
Frédéric Cao, Frederic Guichard, H. ...
DPHOTO
2009
126views Hardware» more  DPHOTO 2009»
13 years 4 months ago
Measuring texture sharpness of a digital camera
A method for evaluating texture quality as shot by a camera is presented. It is shown that usual sharpness measurements are not completely satisfying for this task. A new target b...
Frédéric Cao, Frederic Guichard, Her...
DPHOTO
2009
200views Hardware» more  DPHOTO 2009»
13 years 4 months ago
Illuminant estimation and detection using near-infrared
Digital camera sensors are sensitive to wavelengths ranging from the ultraviolet (200-400nm) to the near-infrared (700-100nm) bands. This range is, however, reduced because the ai...
Clément Fredembach, Sabine Süsstrunk
DPHOTO
2009
154views Hardware» more  DPHOTO 2009»
13 years 4 months ago
Optimal color filter array design: quantitative conditions and an efficient search procedure
Most digital cameras employ a spatial subsampling process, implemented as a color filter array (CFA), to capture color images. The choice of CFA patterns has a great impact on the...
Yue M. Lu, Martin Vetterli
DPHOTO
2009
108views Hardware» more  DPHOTO 2009»
13 years 4 months ago
IDEAL: an image pre-processing architecture for high-end professional DSC applications
We developed and implemented a flexible image pre-processing concept to achieve an image sub-system for top-end professional digital still camera applications that ensures the hig...
Auke van der Heide, Takashi Urano, Frank Polderdij...
DPHOTO
2009
116views Hardware» more  DPHOTO 2009»
13 years 4 months ago
Interleaved imaging: an imaging system design inspired by rod-cone vision
Under low illumination conditions, such as moonlight, there simply are not enough photons present to create a high quality color image with integration times that avoid camera-sha...
Manu Parmar, Brian A. Wandell
DPHOTO
2009
119views Hardware» more  DPHOTO 2009»
13 years 4 months ago
Naturalness classification of images into DCT domain
Holistic representations of natural scenes are an effective and powerful source of information for semantic classification and analysis of arbitrary images. Recently, the frequenc...
Sebastiano Battiato, Giovanni Maria Farinella, Gio...
DPHOTO
2009
138views Hardware» more  DPHOTO 2009»
13 years 4 months ago
Statistical identification and analysis of defect development in digital imagers
The lifetime of solid-state image sensors is limited by the appearance of defects, particularly hot-pixels, which we have previously shown to develop continuously over the sensor ...
Jenny Leung, Glenn H. Chapman, Zahava Koren, Israe...
DPHOTO
2009
131views Hardware» more  DPHOTO 2009»
13 years 4 months ago
Interaction of image noise, spatial resolution, and low contrast fine detail preservation in digital image processing
We present a method to improve the validity of noise and resolution measurements on digital cameras. If non-linear adaptive noise reduction is part of the signal processing in the...
Uwe Artmann, Dietmar Wueller
COMPSYSTECH
2009
13 years 4 months ago
Personalized web search using context enhanced query
: This work presents personalized web search using enhancing information extracted from context. Context reflects user profile, her interests, past searching experiences etc. It is...
Michal Kajaba, Pavol Návrat