نتایج جستجو برای: digital image analysis
تعداد نتایج: 3315978 فیلتر نتایج به سال:
Methods of digital image analysis find wide application both in scientific research and many branches industry. During the last decades, interest has grown images with multifractal structure which are obtained biology, medicine, chemistry studying soil. The mathematics fractals fractal geometry well known studied. However, despite this, a common approach to designing methods practical investiga...
Today, electron microscopy (EM) is increasingly confronted by the revolution in image-processing technology provoked by modern computers. Digital cameras are fast replacing film-based cameras in EM, as elsewhere, and the procedures for digital image-archiving, image-analysis, and image publication are rapidly evolving. To take advantage of these advances, we have chosen for the moment a 'middle...
Abstract Plant growth and biomass assessments are required in production and research. Such assessments are followed by major decisions (e.g., harvest timing) that channel resources and influence outcomes. In research, resources required to assess crop status affect other aspects of experimentation and, therefore, discovery. Destructive harvests are important because they influence treatment s...
Dasht Yari plain is nearly 580,000 hectares which is under engraving gully erosion and unfortunately the gully development rate is increased in the recent decades. Satellite images may provide quick, extensive, and valuable information for the interpretation of morphometric characterstics of gully erosion expansion due to having attributes such as time series, relatively low cost, large coverag...
Introduction: Radiography is one of the most important diagnostic methods for evaluation of dental caries. On the other hand, the least amount of radiation along with high quality is a main gold standard. The purpose of this study was to compare the diagnostic accuracy of Primax, Insight Radiographic films, and direct digital images (Schick CMOS-APS), in detection of interproximal natural Carie...
With development of digital multimedia technology and rapid growth of the Internet, illegal copy and exchange of digital multimedia sources is also spread. In such environment, copyright protection plays an essential role. In this paper a new semi- blind image watermarking algorithm for proof of ownership is proposed. At first, the original image is transformed to transform domain and the low f...
Introduction: Various intraoral digital radiographic systems are available as an alternative to film-based radiography. Recent rapid progress in the field of digital radiography offers the possibility of image processing and manipulation. Pseudocolor filter is one of the tools of digital systems. The aim of this study was to compare diagnostic accuracy of proximal caries in black and white a...
background: mammography is the primary imaging technique for detection and diagnosis of breast cancer; however, the contrast of a mammogram image is often poor, especially for dense and glandular tissues. in these cases the radiologist may miss some diagnostically important microcalcifications. in order to improve diagnosis of cancer correctly, image enhancement technology is often used to enha...
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