نتایج جستجو برای: digital image analysis

تعداد نتایج: 3315978  

2000
W. Heine I. Sekoulov H. Burkhardt J. Behrendt

By the consideration of the microscopic picture of activated sludge samples it is possible to introduce a further biological parameter apart from the conventional physico-chemical parameters for the evaluation and control of biological stages of waste water treatment plants. It is reported that different parameters have certain influences on the activated sludge floc and on the developing bioze...

In this paper a wavelet-based logo watermarking scheme is presented. The logo watermark is embedded into all sub-blocks of the LLn sub-band of the transformed host image, using quantization technique. Extracted logos from all sub-blocks are merged to make the extracted watermark from distorted watermarked image. Knowing the quantization step-size, dimensions of logo and the level of wavelet tra...

2008
Hongzhi Xu Dongwu Liu Zhiwei Chen

Recently, analysis of digital images with confocal microscope has become a routine technique and indispensable tool for cell biological studies and molecular investigations. Because the light emitted from the point out-of-focus is blocked by the pinhole and can not reach the detector, thus only an image of the fluorescence from the focal plane is imaged. In present studies, we use the probes 2′...

Journal: :CoRR 2016
Enoch A-iyeh James F. Peters

The focus of this article is on the detection and classification of patterns based on groupoids. The approach hinges on descriptive proximity of points in a set based on the neighborliness property. This approach lends support to image analysis and understanding and in studying nearness of image segments. A practical application of the approach is in terms of the analysis of natural images for ...

1995
Hagit Hel-Or

This paper introduces a method for quantization of image-sequences which takes into account the human sensitivities in both space and time. A weighted clustering approach is used for quantization which allows exibility in the choice of weights. Assigning weights proportional to the space gradients and the time gradients is shown to produce better quantization of color image sequences.

2011
Yong Liang Yanwei Zeng Wencong Jiang Xiaojun Wang

Aerial photogrammetry is one of the main methods obtaining geospatial information. After entering the 21st century, aerial photogrammetry technology has fully entered the digital age, and the quality of digital aerial photography results will directly affect the quality and accuracy of results of surveying and mapping .Therefore, it is necessary to inspect the quality of digital aerial photogra...

2009
Ozlem Gormez Hasan Huseyin Yilmaz

Image post-processing of dental digital radiographs, a function which used commonly in dental practice is presented in this article. Digital radiography has been available in dentistry for more than 25 years and its use by dental practitioners is steadily increasing. Digital acquisition of radiographs enables computer-based image post-processing to enhance image quality and increase the accurac...

2007
Thomas Quiniou Nazha Selmaoui-Folcher Christine Laporte-Magoni Michel Allenbach

In this paper, we describe a new technique for the automatic orientation of bedding in drill core from digital images. Images are planar pictures of the drill core, and we show that it is possible to determine layer orientation without rotating the core on the full circumference. More precisely, we show that angle information can be extracted by applying image processing and a mathematical desc...

Journal: :Bojon-gwahakoeji 2021

In the digital era, large archives of information and Internet accessibility make search, including image easier affordable, even from remote locations. Information transmission sharing can be performed instantly, at any moment. case images, there are risks transmitting recklessly intentionally modified images. Such images also transmitted used as an additional source by followers. this study, ...

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