Constructing a full CAD model of a part requires feature descriptions from all sides; in this case we consider surface patches as the geometric primitives. Most previous research in surface patch extraction has concentrated on extracting patches from a single view. This leads to several problems with aligning and combining partial patch fragments in order to produce complete part models. We hav...

Fourier analysis is often used as a tool to facilitate the extraction of texture information from image data. However, in situations where the texture patch does not entirely fill the region of analysis, information relating to the shape of the patch becomes entwined with its texture content, thus contaminating the Fourier spectrum and corrupting the texture information. We propose the use of a...

BACKGROUND Characterization of opioid excretion in sweat is important for accurate interpretation of sweat tests in drug treatment, criminal justice, and workplace drug testing programs. METHODS Participants (n=20) received placebo, 3 low (60 mg/70 kg) or 3 high (120 mg/70 kg) codeine sulfate doses (used as a model for opioid excretion) within 1 week. Codeine and metabolites in sweat were col...

background the aim of the present study was to compare two analgesic techniques for transrectal ultrasound (trus)-guided biopsy: diclofenac patch versus periprostatic nerve block with 1% lidocaine. objectives to study the efficacy of and compare diclofenac patch and periprostatic nerve block as analgesia in trus-guided prostate needle biopsy. patients and methods in total, 60 patients were pros...

This paper describes a robust and blind watermarking algorithm for polygonal meshes, dedicated to copyright protection. The watermark primitives are intrinsic 3D shape descriptors: the analytic and continuous geometric volume moments. The mesh is first normalized by using its global moments, and decomposed into patches by discretizing its cylindric domain. Then, one bit is inserted in each cand...

Quantitative magnetic resonance analysis often requires accurate, robust, and reliable automatic extraction of anatomical structures. Recently, template-warping methods incorporating a label fusion strategy have demonstrated high accuracy in segmenting cerebral structures. In this study, we propose a novel patch-based method using expert manual segmentations as priors to achieve this task. Insp...

An improved growing deformable surface patches algorithm and its application in medical image analysis are presented in this work. In this proposed method, a growing mechanism is introduced to 3D deformable model. After a surface patch is initialized within the external force field, it is deformed to reach and stop at the boundary of the object and anchored there. New surface patches are initia...

Quantitative magnetic resonance analysis often requires accurate, robust and reliable automatic extraction of anatomical structures. Recently, template-warping methods incorporating a label fusion strategy have demonstrated high accuracy in segmenting cerebral structures. In this study, we propose a novel patch-based method using expert segmentation priors to achieve this task. Inspired by rece...

In this paper, we propose a new compact quasi-fractal shaped microstrip antenna that consists of a hexagonal patch as the main radiator and a complementary stacked patch as the parasitic element. The overall surface of the proposed quasi-fractal patch is about 55% lower than the conventional hexagonal patch. Using of stacked technique, the gain reduction of compression technique is almost compe...