Search Results - "16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003)"
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A hole-filling strategy for reconstruction of smooth surfaces in range images
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…Creating models of real scenes is a complex task for which the use of traditional modelling techniques is inappropriate. For this task, laser rangefinders are…”
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2
Automatic shadow segmentation in aerial color images
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…A robust and efficient technique to segment shaded areas in aerial color images is presented here. This technique is based on the physical phenomenon of…”
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A non-self-intersection Douglas-Peucker algorithm
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…The classical Douglas-Peucker line-simplification algorithm is recognized as the one that delivers the best perceptual representations of the original lines…”
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4
Image feature extraction for application of biometric identification of iris - a morphological approach
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…We present a new approach based on morphological operators for application of biometric identification of individuals by segmentation and analysis of the iris…”
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5
Blood vessels segmentation in nonmydriatic images using wavelets and statistical classifiers
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…This work describes a new framework for automatic analysis of optic fundus nonmydriatic images, focusing on the segmentation of the blood vessels by using…”
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6
Moving least squares multiresolution surface approximation
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…We describe a new method for surface reconstruction based on unorganized point clouds without normals. We also present a new algorithm for refining the initial…”
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7
Visual speech recognition: a solution from feature extraction to words classification
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…Audio-visual speech recognition has been an active area of research lately. A bit, and yet unsolved part of this problem is the visual only recognition, or lip…”
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8
Secure authentication watermarking for binary images
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…Authentication watermarking is a hidden data inserted into an image, in order to detect any alterations. It seems to be almost impossible to design a really…”
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9
Texture segmentation considering multiband, multiresolution and affine invariant roughness
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…Texture segmentation is a basic task in the process of satellite image analysis. However, texture characterization is not an easy task specially when more than…”
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10
A computer vision framework for eye gaze tracking
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…Eye gaze tracking (EGT) allows us to estimate the direction of gaze and the point of regard. This technique has been successfully used as a pointing device in…”
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11
Picking and snapping for 3D input devices
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…A picking mechanism (pointing and indicating) with the cursor is essential for any direct-manipulation application. The windowing systems, under whose control…”
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12
Frequency plot and relevance plot to enhance visual data exploration
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…We present two techniques aiming at exploring databases through multivariate visualizations. Both techniques intend to deal with the problem caused by the…”
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13
Regularized pel-recursive motion estimation using generalized cross-validation and spatial adaptation
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…The computation of 2D optical flow by means of regularized pel-recursive algorithms raises a host of issues, which include the treatment of outliers, motion…”
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14
Semiautomatic hysteroscopic video summarization
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…Hysteroscopic videos have been used to measure the uterus appearance, and are of fundamental importance for gynecologists. Unfortunately, such videos contain…”
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15
Reconstruction using surface dedicated tensorial field
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…We propose a new strategy to estimate surface normals from sparse data for reconstruction. Our approach is based on tensorial fields morphologically adapted to…”
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16
Image inpainting and denoising by nonlinear partial differential equations
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…A new approach is presented for recovering shapes from noisy and damaged images as well as the filling in of missing information or the removal of objects from…”
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17
Effective image retrieval by shape saliences
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…Content-based image retrieval (CBIR) systems have been developed aiming at enabling users to search and retrieve images based on their properties such as…”
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18
Reliable algorithms for ray intersection in computer graphics based on interval arithmetic
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…We study the reliability and performance of interval arithmetic for ray tracing implicit surfaces. We analyze when and how to use interval arithmetic as an…”
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19
Exploration and search-by-similarity in CBIR
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…We deal with content-based image indexing and category retrieval in general databases. When large categories are searched, systems must explore the database…”
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20
Multiscale image segmentation using wavelets and watersheds
Published in 16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003) (2003)“…We propose a new multiscale segmentation technique based on wavelet decompositions and watersheds. The wavelet transform is applied to the image, producing…”
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