12753 search results - page 2280 / 2551 » is 2002 |
116
click to vote
TIP
2002
15 years 4 months ago
2002
Several fragile watermarking schemes presented in the literature are either vulnerable to vector quantization (VQ) counterfeiting attacks or sacrifice localization accuracy to impr...
131
click to vote
TIP
2002
15 years 4 months ago
2002
In this paper we propose the gradient match fractal vector quantizers (GMFVQs) and the side match fractal vector quantizers (SMFVQs), which are two classes of finite state fractal...
158
click to vote
TIP
2002
15 years 4 months ago
2002
In this paper, we introduce a rotational invariant feature set for texture segmentation and classification, based on an extension of fractal dimension (FD) features. The FD extract...
104
click to vote
TIP
2002
15 years 4 months ago
2002
Abstract--We address the problem of computing a local orientation map in a digital image. We show that standard image gray level quantization causes a strong bias in the repartitio...
148
click to vote
TIP
2002
15 years 4 months ago
2002
In this paper, we examine the problem of locating an object in an image when size and rotation are unknown. Previous work has shown that with known geometric parameters, an image r...