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CCCG
2009
15 years 8 months ago
Computational Geometry of Contour Extraction
We present a method for extracting contours from digital images using techniques from computational geometry. Our approach is different from traditional pixelbased methods in imag...
Pedro J. Tejada, Xiaojun Qi, Minghui Jiang
MM
2004
ACM
118views Multimedia» more  MM 2004»
16 years 19 days ago
Scene tunnels for seamless virtual tour
This paper proposes a visual representation named scene tunnel to archive and visualize urban scenes for Internet based virtual tour. We scan cityscapes using multiple cameras on ...
Jiang Yu Zheng, Yu Zhou
ICASSP
2010
IEEE
15 years 2 months ago
Seamlets: Content-aware nonlinear wavelet transform
With the rise of mobile media devices, resizing an image or video to fit a screen of arbitrary size has become an important topic. In general, arbitrary resizing does not preserve...
David D. Conger, Hayder Radha, Mrityunjay Kumar
ICIP
2004
IEEE
16 years 8 months ago
Robust perceptual image hashing via matrix invariants
In this paper we suggest viewing images (as well as attacks on them) as a sequence of linear operators and propose novel hashing algorithms employing transforms that are based on ...
Mehmet Kivanç Mihçak, Ramarathnam Ve...
SAC
2005
ACM
16 years 23 days ago
Estimating manifold dimension by inversion error
Video and image datasets can often be described by a small number of parameters, even though each image usually consists of hundreds or thousands of pixels. This observation is of...
Shawn Martin, Alex Bäcker