Results 21 to 30 of about 94,177 (290)

An Online Detection Method for Coal Dry Screening Based on Image Processing and Fractal Analysis

Applied Sciences, 2022
In coal dry screening, online detection for screening efficiency is a significant challenge. Notwithstanding, the method of image processing is strenuous to implement in this field due to the complex surface texture of shattered coal.
Deyi He, Chusheng Liu
doaj   +1 more source

Research on Rapid Evaluation of Rock Mass Quality Based on Ultrasonic Borehole Imaging Technology and Fractal Method

Advances in Materials Science and Engineering, 2021
The distribution of discontinuities in the deep stratigraphic rock mass is random and irregular, and the spatial distribution has statistical self-similarity, which can be analyzed by fractal theory.
Yuezheng Zhang, Hongguang Ji, Wenguang Li, Kuikui Hou   +3 more
doaj   +1 more source

Application of Fractal Dimension for Quantifying Noise Texture in Computed Tomography Images [PDF]

, 2018
Purpose Evaluation of noise texture information in CT images is important for assessing image quality. Noise texture is often quantified by the noise power spectrum (NPS), which requires numerous image realizations to estimate.
Crotty, Dominic J., Fan, Jiahua, Khobragade, P., Rupcich, Franco, Schmidt, Taly Gilat   +4 more
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Research on fractal image compression hybrid algorithm based on convolutional neural network and gene expression programming

Journal of Algorithms & Computational Technology, 2019
Regarding the problems of insufficient image segmentation intelligence, low compression rate, slow speed for global searching to find the optimal fractal image compression encoding, and bad decoding effect, this article proposes the fractal image ...
Wenjing Li, Qiuxia Pan, Shiaofang Liang, Jiang Yin Jiao   +3 more
doaj   +1 more source

Adaptive Interpolation Scheme for Image Magnification Based on Local Fractal Analysis

IEEE Access, 2020
In this paper, we constructed a new rational fractal interpolation model with scale factors and shape parameters. The model obtains different expressions by changing the scale factor, according with the diversity of image features.
Gang Song, Chao Qin, Kaixiang Zhang, Xunxiang Yao, Fangxun Bao, Yunfeng Zhang   +5 more
doaj   +1 more source

Face image matching using fractal dimension [PDF]

, 1999
A new method is presented in this paper for calculating the correspondence between two face images on a pixel by pixel basis. The concept of fractal dimension is used to develop the proposed non-parametric area-based image matching method which achieves ...
He, Fangpo, Kouzani, Abbas, Sammut, Karl
core   +1 more source

FRACTAL ANALYSIS OF TRABECULAR BONE: A STANDARDISED METHODOLOGY

Image Analysis and Stereology, 2011
A standardised methodology for the fractal analysis of histological sections of trabecular bone has been established. A modified box counting method has been developed for use on a PC based image analyser (Quantimet 500MC, Leica Cambridge). The effect of
Ian Parkinson, Nick Fazzalari
doaj   +1 more source

Toward reduction of artifacts in fused images [PDF]

, 2011
Most fusion satellite image methodologies at pixel-level introduce false spatial details, i.e.artifacts, in the resulting fusedimages. In many cases, these artifacts appears because image fusion methods do not consider the differences in roughness or ...
Alonso, Alparone, Arduini, Bruzzone, Chavez, Choi, Conci, Consuelo Gonzalo, Do, Falconer, Gonzalez-Audicana, Gonzalo, Grazzini, Huang, Huiping, Karathanassi, Kruse, Li, Li, Lillo-Saavedra, Lillo-Saavedra, Mallat, Mandelbrot, Mario Lillo-Saavedra, Mitchell, Myint, Nencini, Octavio Lagos, Parrinello, Parrinello, Pentland, Pohl, Qu, Sun, Sun, Toet, Tu, Tu, Vijayaraj, Wang, Wang, Yang, Zhang, Zhou, Zribi   +44 more
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Color Image Encryption Using Hybrid Method of Fractal-Based Key and Private XOR Key [PDF]

Kirkuk Journal of Science, 2018
The main idea of image encryption is to ensure secure transmitting it in the open network by transforming the image to not understandable form so that unauthorized person cannot decrypt and see it.
Faten H. MohammedSediq, Adnan Ibrahem Salih, Nevart A. Minas   +2 more
doaj   +1 more source

Region-based fractal image compression [PDF]

IEEE Transactions on Image Processing, 2000
A fractal coder partitions an image into blocks that are coded via self-references to other parts of the image itself. We present a fractal coder that derives highly image-adaptive partitions and corresponding fractal codes in a time-efficient manner using a region-merging approach.
Hartenstein, H., Ruhl, M., Saupe, D.
openaire   +3 more sources