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DPHOTO
2010
127views Hardware» more  DPHOTO 2010»
14 years 19 days ago
Visibility of uncorrelated image noise
In this study, we evaluated the effect that pixel size has upon people's preferences for images. We used multispectral images of faces as the scene data and simulated the res...
Jiajing Xu, Reno Bowen, Jing Wang, Joyce E. Farrel...
DPHOTO
2010
195views Hardware» more  DPHOTO 2010»
14 years 1 months ago
Direct PSF estimation using a random noise target
Conventional point spread function (PSF) measurement methods often use parametric models for the estimation of the PSF. This limits the shape of the PSF to a specific form provide...
Johannes Brauers, Claude Seiler, Til Aach
DPHOTO
2010
148views Hardware» more  DPHOTO 2010»
14 years 1 months ago
On pixel detection threshold in the gigavision camera
Recently, we have proposed a new image device called gigavision camera whose most important characteristic is that pixels have binary response. The response function of a gigavisi...
Feng Yang, Luciano Sbaiz, Edoardo Charbon, Sabine ...
DPHOTO
2010
176views Hardware» more  DPHOTO 2010»
14 years 1 months ago
Low-cost space-varying FIR filter architecture for computational imaging systems
Recent research demonstrates the advantage of designing electro-optical imaging systems by jointly optimizing the optical and digital subsystems. The optical systems designed usin...
Guotong Feng, Mohammed Shoaib, Edward L. Schwartz,...
DPHOTO
2010
208views Hardware» more  DPHOTO 2010»
14 years 1 months ago
A signature analysis based method for elliptical shape
The high level context image analysis regards many fields as face recognition, smile detection, automatic red eye removal, iris recognition, fingerprint verification, etc. Techniq...
Ivana Guarneri, Mirko Guarnera, Giuseppe Messina, ...
DPHOTO
2010
208views Hardware» more  DPHOTO 2010»
14 years 1 months ago
Defocus techniques for camera dynamic range expansion
Defocus imaging techniques, involving the capture and reconstruction of purposely out-of-focus images, have recently become feasible due to advances in deconvolution methods. This...
Matthew Trentacoste, Cheryl Lau, Mushfiqur Rouf, R...
DPHOTO
2010
360views Hardware» more  DPHOTO 2010»
14 years 1 months ago
Signal-dependent raw image denoising using sensor noise characterization via multiple acquisitions
Accurate noise level estimation is essential to assure good performance of noise reduction filters. Noise contaminating raw images is typically modeled as additive white and Gauss...
Angelo Bosco, Arcangelo Bruna, D. Giacalone, Sebas...
DPHOTO
2010
171views Hardware» more  DPHOTO 2010»
14 years 1 months ago
The future of photography
Ricardo J. Motta
DPHOTO
2010
287views Hardware» more  DPHOTO 2010»
14 years 1 months ago
Dead leaves model for measuring texture quality on a digital camera
We describe the procedure to evaluate the image quality of a camera in terms of texture preservation. We use a stochastic model coming from stochastic geometry, and known as the d...
Frédéric Cao, Frederic Guichard, Her...
DPHOTO
2010
158views Hardware» more  DPHOTO 2010»
14 years 1 months ago
Information capacity: a measure of potential image quality of a digital camera
The aim of the paper is to define an objective measurement for evaluating the performance of a digital camera. The challenge is to mix different flaws involving geometry (as disto...
Frédéric Cao, Frederic Guichard, Her...