نتایج جستجو برای: pixel accuracy after identifying each hyperbolic object

تعداد نتایج: 3141901  

ژورنال: مجله دندانپزشکی 2004
باشی زاده, حوریه , فاطمی تبار, سیداحمد,

Statement of Problem: One of the major goals, in most dental researches, is to measure bone destruction or deposition due to the progression or regression of disease. Failure of human eyes to detect minor radiographic density changes resulted in more accurate methods such as optical densitometry and direct or indirect digital densitometry.Purpose: The aim of this study was to determine the accu...

Journal: :CoRR 2015
Xiaodan Liang Yunchao Wei Xiaohui Shen Jianchao Yang Liang Lin Shuicheng Yan

Instance-level object segmentation is an important yet under-explored task. The few existing studies are almost all based on region proposal methods to extract candidate segments and then utilize object classification to produce final results. Nonetheless, generating accurate region proposals itself is quite challenging. In this work, we propose a Proposal-Free Network (PFN ) to address the ins...

Journal: :Journal of Marine and Aquatic Sciences 2023

The coastal area is an intersection between mainland and ocean. tourism potential in the of Bulak District Surabaya expanded. It shown by construction Bridge 2015. This will affect land use change. Remote sensing technology one acquisitions to monitor research focuses on identifying change District, Surabaya, 2014 2020, as well determine accuracy classification method applied for mapping 2020. ...

Journal: :Remote Sensing 2021

The monitoring and assessment of land use/land cover (LULC) change over large areas are significantly important in numerous research areas, such as natural resource protection, sustainable development, climate change. However, accurately extracting LULC only using the spectral features satellite images is difficult owing to landscape heterogeneities areas. To improve accuracy classification, st...

Journal: :Remote Sensing 2023

Reliable crop type classification supports the scientific basis for food security and sustainable agricultural development. However, it still lacks a limited-samples-based method which is labor- time-efficient. To this end, we used Google Earth Engine (GEE) Sentinel-1A/B SAR time series to develop eight types of strategies based on different sampling methods central scattered, perspectives obje...

2006
Shai Avidan

SpatialBoost extends AdaBoost to incorporate spatial reasoning. We demonstrate the effectiveness of SpatialBoost on the problem of interactive image segmentation. Our application takes as input a trimap of the original image, trains SpatialBoost on the pixels of the object and the background and use the trained classifier to classify the unlabeled pixels. The spatial reasoning is introduced in ...

2013
Jesus Angulo Santiago Velasco-Forero Jesús Angulo

Mathematical morphology is a nonlinear image processing methodology based on the application of complete lattice theory to spatial structures. Let us consider an image model where at each pixel is given a univariate Gaussian distribution. This model is interesting to represent for each pixel the measured mean intensity as well as the variance (or uncertainty) for such measurement. The aim of th...

1991
Vincent Lefévère Sylvain Karpf Christophe Chaillou Michel Mériaux

The goal of the I.M.O.G.E.N.E. project is to define a real time graphics system. We focus on true real time display, images being computed at frame rate, i.e 50 (or 60) times a second. The I.M.O.G.E.N.E. machine uses no frame buffer. We use a massive object parallelism; the graphics module is made of a large number of object-processors, each one handling one graphics primitive at pixel rate in ...

2006
SangUn Yoon Dongbo Min Kwanghoon Sohn

A new area-based stereo matching in hierarchical framework is proposed. Local methods generally measure the similarity between the image pixels using local support window. An appropriate support window, where the pixels have similar disparity, should be selected adaptively for each pixel. Our algorithm consists of the following two steps. In the first step, given an estimated initial disparity ...

Journal: :Journal of nuclear medicine technology 2011
Russell D Folks Daya Manatunga Ernest V Garcia Andrew T Taylor

UNLABELLED Kidney motion during dynamic renal scintigraphy can cause errors in calculated renal function parameters. Our goal was to develop and validate algorithms to detect and correct patient motion. METHODS We retrospectively collected dynamic images from 86 clinical renal studies (42 women, 44 men), acquired using (99m)Tc-mercaptoacetyltriglycine (80 image frames [128 × 128 pixels; 3.2 m...

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