3d image processing


3D image processing to reconstruct trees from laser scans
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The task addressed in this paper is 3D modelling and reconstruction of (real world) trees on the basis of terrestrial laser scans. To identify the structure of a tree in terms of stem and branches, an algorithm has been designed in 3D voxel space, based on a selection of basic

3d image processing for the study of the evolution of the shape of the human skull: presentation of the tools and preliminary results
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We present an automatic method that allows one to visualize and analyze, in three dimensions, the evolution of the shape of the human skull from CT-Scan images. A first algorithm automatically extract the crest lines from CT-Scan images of the skull of a

The uniformity of wheel produced pottery deduced from 3D image processing and scanning
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Every archaeological excavation is confronted with a vast number of ceramic fragments. The documentation, administration and scientific processing of these fragments presents a temporal, personnel and financial problem. Scientific evaluation in archaeological practice

3D discrete wavelet transform VLSI architecture for image processing
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In this paper, we propose an improved version of lifting based 3D Discrete Wavelet Transform (DWT) VLSI architecture which uses bi-orthogonal 9/7 filter processing . This is implemented in FPGA by using VHDL codes. The lifting based DWT architecture has the

A survey on stereo matching techniques for 3D vision in image processing
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Extraction of three-dimensional scene from the stereo images is the most effective research area in the field of computer vision. Stereo vision constructs the actual three-dimensional scene from two stereo images having different viewpoints. Stereo matching is a

Assessment of 3D signal and image processing using FMCW THz signals
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Terahertz wave radiation is defined as the farinfrared electromagnetic radiation between 0.1 and 10 THz. In recent years, renewed interest has come in three dimensional imaging, using the transparency property of most non-metal objects in the sub-THz range. Given the high

Automated volumetric measurement of truckloads through multi-view photogrammetry and 3D image processing software
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Given that wood represents on average about 1/3 of the delivered cost, it is key to adopt correct measurement procedures and technologies that provide better wood volume estimates. Poor measurements not only impact the revenue obtained by haulage contractors

An Automated 3D Image – Processing Strategy for Small-Animal Bioluminescence Cancer Studies
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Small-animal bioluminescence tomographic (BLT) imaging can detect cellular or molecular events in vivo and non-invasively. The specific goal of this project is to develop and validate optimal methodologies for imaging light emission at optical wavelengths in order to study

High Speed 3D Reconstruction by Video Image Pipeline Processing and Division of Spatio-Temporal Space.
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A high speed 3D reconstruction method using multiple video cameras is presented. The video cameras are set to surround the real 3D space where people exist. Reconstructed 3D space is displayed in voxel format and a user can see the space from any viewpoint with a

COMPARISON BETWEEN TWO GENERIC 3D BUILDING RECONSTRUCTION APPROACHES-POINT CLOUD BASED VS. IMAGE PROCESSING BASED.
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This paper compares two generic approaches for the reconstruction of buildings. Synthesized and real oblique and vertical aerial imagery is transformed on the one hand into a dense photogrammetric 3D point cloud and on the other hand into photogrammetric

Providing with high performance 3d medical image processing on a distributed environment
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High Performance Computing has demonstrated extensively its potential benefit for reaching an efficient processing of 3D medical images. However, there are few commercial image – processing solutions that benefit from High Performance Computing. Although bi-processor

3D Multiple Crack System: Extraction and Analysis using Motion-based Image Processing Technique
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We present a motion-based method to extract the multiple 3D crack surfaces from a sequence of 3D X-ray microtomographic mortar images. We verify the correctness and accuracy of results by ground truth obtained with simulated cracks in real specimens. We

Semi-automated data capture and image processing : new routes to interactive 3D models
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Apollonia-Arsuf lies on the Mediterranean coast of Israel on a cliff overlooking a natural anchorage between Jaffa and Caesarea. It was continuously settled between the 6th century BC and 13th century AD, when the Mamluks captured and destroyed the site. The first

An adaptation of astronomical image processing enables characterization and functional 3D mapping of individual sites of excitation-contraction coupling in rat
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In beating cardiomyocytes, synchronized localized Ca2+ transients from thousands of active excitation-contraction coupling sites (ECC couplons) comprising plasma and sarcoplasmic reticulum membrane calcium channels are important determinants of the hearts

3D medical image processing algorithm competition in Japan
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This paper reports on a medical image processing algorithm competition that has been held annually in Japan from 2002 to 2010. It is the worlds oldest competition in the field of 3D medical image processing , and covers various targets: the liver, pancreas, hepatocellular

Gait analysis using a 3D graphic model to drive image processing
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Gait analysis is a valuable tool in diagnosing walking disorders. However, the laboratories where such studies take place are often far from where the patients are. In this paper we describe a preliminary approach to using standard video for follow-up analysis. Techniques

Morphological Image Processing Approach for 2D to 3D Reconstruction of MRI Brain Tumor from MRI Images
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Abstract The 2D Image Data to visualize in the MRI images which never give the actual feel of how the internal parts would exactly look like. This project presents method for 3D image reconstruction, which is one of the most attractive avenues in Computed tomography (CT)

APPLICATION OF A DEGENERATE DIFFUSION METHOD IN 3D MEDICAL IMAGE PROCESSING
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In this contribution, we present the application of the level set formulation of the geodesic active contours model and its 3D semi-implicit complementary volume discretization to the segmentation of 2D+ t cardiac MRI (CMR) data. The appropriate adujstment of algorithm

Development of a 3D Particle Tracking Velocimetry method and its associated Python-coded software for image processing
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The aim of this experimental study was to use classical 2D PTV (Particle Tracking Velocimetry), and to extend it to develop a 3D method. One of PTV method advantages is the study of a situated phenomenon thanks to its Lagrangian specification. Thus, those 2D

In vivo 3D quantification of melanin in human skin based on multiphoton microscopy and image processing
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Multiphoton microscopy is a recent non-invasive skin imaging technique that allows the human skin three-dimensional structure to be characterized in vivo with sub-µm resolution. This technique, in combination with specific 3D image processing tools, allows an automatic



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