نتایج جستجو برای: digital image analysis

تعداد نتایج: 3315978  

Mehran Taramsari, Mehrnaz Barandeh, Somayeh Nemati, Zahra Dalili Kajan,

Introdouction: The mapping of ghost images of the maxilla and the nasal cavity, which are complex structures, is very important. The position of objects that create a ghost image can differ when using various devices. The purpose of this investigation was to study the mapping of ghost images of the maxilla and the nasal cavity using a Cranex D digital panoramic machine. Materials and methods: ...

One of the most fundamental features of digital image and the basic steps in image processing, analysis, pattern recognition and computer vision is the edge of an image where the preciseness and reliability of its results will affect directly on the comprehension machine system made objective world. Several edge detectors have been developed in the past decades, although no single edge detector...

Journal: :Japanese Journal of Radiological Technology 1995

Journal: :journal of dentomaxillofacil radiology, pathology and surgery 0
zahra dalili kajan department of maxillofacial radiology. faculty of dentistry, guilan university of medical sciences, rasht, iran mehran taramsari department of endodontics, faculty of dentistry, guilan university of medical sciences, rasht, iran somayeh nemati department of maxillofacial radiology, faculty of dentistry, guilan university of medical sciences, rasht, iran mehrnaz barandeh faculty of dentistry, guilan university of medical sciences, rasht, iran

introdouction: the mapping of ghost images of the maxilla and the nasal cavity, which are complex structures, is very important. the position of objects that create a ghost image can differ when using various devices. the purpose of this investigation was to study the mapping of ghost images of the maxilla and the nasal cavity using a cranex d digital panoramic machine. materials and methods: t...

One of the most fundamental features of digital image and the basic steps in image processing, analysis, pattern recognition and computer vision is the edge of an image where the preciseness and reliability of its results will affect directly on the comprehension machine system made objective world. Several edge detectors have been developed in the past decades, although no single edge detector...

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
s. nikneshan dept. of oral & maxillofacial radiology, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. b. moghaddamzade

objective: after introduction of digital radiography into dentistry several methods of image acquisition were accessible in the field of dentistry. in many instances it is necessary to digitize analog images. there is no overall acceptable method for image digitization so all different types of images can be comparable. the objective of this study was to compare the diagnostic accuracy of diffe...

Journal: Desert 2012
F. Mellati H. Arzani H. Azarnivand H.R. Keshtkar S.K. Alavipanah

Land cover is one of basic data layers in geographic information system for physical planning and environmentalmonitoring. Digital image classification is generally performed to produce land cover maps from remote sensing data,particularly for large areas. In the present study the multispectral image from IRS LISS-III image along with ancillary datasuch as vegetation indices, principal componen...

2014
Vamsi Parimi Laurie J. Eisengart Ximing J. Yang

Introduction: Triple immunohistochemical (IHC) stains including antibodies specific for alphamethylacyl-CoA-racemase and basal cell markers have been a valuable aid in accurate identification of prostate carcinoma. However, accurate quantification of minuscule areas of prostate carcinoma in biopsy specimens can often be a challenge. Here we assessed the diagnostic value and quantitative use of ...

ژورنال: سنجش و ایمنی پرتو 2015

The usage of digital radiology systems with insufficient quality control of digital image detectors can efface inherent superiorities of digital systems in comparison with analogue radiology systems and even makes an increased level of patients’ radiation doses. Modulation transfer function (MTF) is one of the most important parameters related to image quality and digital detectors efficiency. ...

Journal: :avicenna journal of dental research 0
farzad esmaeili department of radiology, school of dentistry tabriz university of medical sciences and health services, tabriz, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تبریز (tabriz university of medical sciences) teymour abbasi dentistry hospital of tabriz school of dentistry, tabriz university of medical sciences and health services, tabriz, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تبریز (tabriz university of medical sciences) nazli rabienejad department of periodontics, school of dentistry hamadan university of medical sciences and health services, hamadan, ir iran; department of periodontics, school of dentistry, hamadan university of medical sciences and health services, hamadan, ir iran. tel: +98-9144193212, fax: +98-8138381085سازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) shabnam seyedzadeh sabounchi community oral health department, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences)

background the first commercial system for digital radiography was introduced in 1987, and it has evolved a great deal since then. currently, it is possible to enhance images in digital radiography. objectives the aim of this study is to evaluate the diagnostic accuracy of image enhancement in direct digital radiography as it relates to interproximal carries assessment. conclusions using these ...

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