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SI3D
2010
ACM
15 years 4 months ago
Variance soft shadow mapping
We present variance soft shadow mapping (VSSM) for rendering plausible soft shadow in real-time. VSSM is based on the theoretical framework of percentage-closer soft shadows (PCSS...
Zhao Dong, Baoguang Yang
ICIP
2003
IEEE
16 years 2 months ago
Video region segmentation by spatio-temporal watersheds
We propose a video region segmentation scheme combining spatio-temporal edges and watershed techniques. We consider the video sequence as a 3-D volume and compute color edges with...
Motaz A. El Saban, B. S. Manjunath
87
Voted
MVA
2007
126views Computer Vision» more  MVA 2007»
15 years 1 months ago
Image Contrast Enhancement by Analysis on Embedded Surfaces of Images
Image contrast enhancement plays an important role in many machine vision applications. In this study, we propose a new method for edge enhancement based on analysis on embedded s...
Li Tian, Sei-ichiro Kamata
STOC
1994
ACM
125views Algorithms» more  STOC 1994»
15 years 4 months ago
A spectral technique for coloring random 3-colorable graphs (preliminary version)
Let G(3n, p, 3) be a random 3-colorable graph on a set of 3n vertices generated as follows. First, split the vertices arbitrarily into three equal color classes and then choose ev...
Noga Alon, Nabil Kahale
111
Voted
ICDAR
2011
IEEE
14 years 2 days ago
A Chinese Character Localization Method Based on Intergrating Structure and CC-Clustering for Advertising Images
—In this paper, a novel Chinese character localization method is proposed for texts in advertising images. To deal with the texts with gradient color, a color clustering method b...
Jie Liu, Shuwu Zhang, Heping Li, Wei Liang