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The manual of photography /
Published 2009Table of Contents: “…Introduction to the imaging process -- Light theory -- Photographic light sources -- The human visual system -- Introduction to colour science -- Photographic and geometrical optics -- Images and image formation -- Sensitometry -- Image sensors -- Camera lenses -- Photographic camera systems -- Exposure and image control -- Image formation and the photographic process -- Digital cameras and scanners -- Displays -- Digital printing and materials -- Digital image file formats -- Image storage media and archiving -- Introduction to image quality and system performance -- Speed and sensitivity -- Tone reproduction -- Photographic colour reproduction -- Digital colour reproduction -- Noise, sharpness, resolution and information -- Digital image workflow -- Colour management systems -- Spatial image processing -- Digital image processing in the frequency domain -- Image compression.…”
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Defect detection of wire rope for oil well based on adaptive angle
Published 2015-09-01“…This paper uses a digital image processing method which is based on texture feature of steel cable to detect the fracture of steel wire. …”
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Defect detection of wire rope for oil well based on adaptive angle
Published 2015-10-01“…This paper uses a digital image processing method which is based on texture feature of steel cable to detect the fracture of steel wire. …”
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24
Research on Grading Detection of the Wheat Seeds
Published 2014-01-01“…We studied analytic hierarchy process (AHP) for seeds grading by digital image processing techniques in the paper. Firstly, preprocess the collected wheat seed images; extract some parameters, such as area, plumpness, rectangular, and elongation of the seed, and then build the level model. …”
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AIRBORNE LASER SCANNER AS A DATA SOURCE FOR BUILDING SELECTED ELEMENTS OF AN INTELLIGENT DATABASE FOR TRANSPORTATION
Published 2024-09-01“…The analysis process was based mainly on digital image processing methods, based solely on lidar data, without using information from other sources. …”
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Study on the Online Wear Condition Monitoring Method for Mining Reducer based on Wear Particle Feature
Published 2017-01-01“…Aiming at the online wear condition monitoring of a mining reducer for engineering applications,the relationship between wear debris features and wear status is studied.Firstly,ferrograph images are firstly captured by using an online wear debris image acquisition system.Secondly,the wear particle features are extracted by utilizing digital image processing technology,where the Otsu’s automatic thresholding method is employed to separate wear particles from the image background,and the debris features of relative concentration and the maximum width are extracted using a pixel scanning method.Finally,the wear status of a mining reducer is analyzed based on the statistical features of online wear debris.Additionally,the experiments are carried out and the results demonstrate that the proposed method is effective to monitor a running machine.This study also provides a new approach for automatic monitoring and intelligent maintenance of mining reducer.…”
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27
Multilevel Thresholding for Image Segmentation Using Mean Gradient
Published 2022-01-01“…Image binarization and segmentation have been one of the most important operations in digital image processing and related fields. In spite of the enormous number of research studies in this field over the years, huge challenges still exist hampering the usability of some existing algorithms. …”
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Development of Algorithms for Processing Images of Large Volumes
Published 2022-09-01“…In recent years, interest in digital image processing has increased significantly, so it is no coincidence that digital processing is one of the intensively developed areas of research. …”
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29
Logistics Information Traceability Mechanism of Fresh E-Commerce Based on Image Recognition Technology
Published 2022-01-01“…Computer vision and digital image processing techniques are used for visual identification and tracking through different warehouses and delivery points. …”
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30
Texture Detection of Aluminum Foil Based on Top-Hat Transformation and Connected Region Segmentation
Published 2020-01-01“…A new method of texture detection for aluminum foil based on digital image processing technology is proposed. Top-hat transformation and image segmentation technology based on the connected domain are used to change the method of determining texture fraction by using human experience. …”
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31
Automated Shape Analysis and DEM Study on Graded Crushed Stone
Published 2021-01-01“…In this study, the realistic particle outline is first automatically extracted based on digital image processing and deep learning algorithms. Then, the elongation (EI), roundness (Rd), and roughness (Rg) of GCS are quantified by shape evaluation algorithms. …”
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32
Recognition of Emotions for People with Autism: An Approach to Improve Skills
Published 2022-01-01“…Based on the theory of facial action coding systems and digital image processing techniques, it is possible to detect facial expressions and classify them into one of the six basic emotions. …”
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33
True 2-D 5/3 wavelet transform and its application for CT image lossless compression
Published 2016-06-01“…Wavelet transform is widely used in the field of digital image processing,and it usually processes image by separating the row and column,which can’t meet the human visual system(HVS)completely.To address this situation,a kind of true 2-D 5/3 wavelet transform was constructed,which was more consistent with HVS.Firstly,1-D 5/3 wavelet filter bank constructed the true 2-D Lazy wavelet filter bank by McClellan transform,and it was implemented by lifting scheme.Then,this lifting scheme was nested with the true 2-D Lazy wavelet filter bank to implement true 5/3 wavelet transform of image.To facilitate engineering applications,the transformation procedure was given.The experiments of true 5/3 wavelet transform used in CT image lossless compression,the experiment shows that,for 512×512 size CT image true 5/3 wavelet transform has better compression effect when compared with two dimensional separable 5/3 wavelet transform and can save 1 989.9 byte per piece on average.…”
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34
Material Point Method-Based Simulation of Run-Out Characteristics for a Soil–Rock Mixed Landslide Induced by Surcharge
Published 2024-01-01“…Two-dimensional models of a representative soil–rock mixed slope and a pure soil slope are meticulously crafted using digital image processing techniques. The distinct damage profiles exhibited by the mixed and pure soil slopes are compared. …”
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35
Experimental Research on Internal Behaviors of Caved Rocks under the Uniaxial Confined Compression
Published 2017-01-01“…In this paper, an experiment system was built to investigate internal behaviors of caved rocks’ sample, under the uniaxial confined compression, including movement and breakage behavior by the digital image processing technologies. The results show that the compression process of caved rocks could be divided into two stages by relative density. …”
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Features Extraction of Flotation Froth Images and BP Neural Network Soft-Sensor Model of Concentrate Grade Optimized by Shuffled Cuckoo Searching Algorithm
Published 2014-01-01“…Based on the digital image processing technique, the color features in HSI color space, the visual features based on the gray level cooccurrence matrix, and the shape characteristics based on the geometric theory of flotation froth images are extracted, respectively, as the input variables of the proposed soft-sensor model. …”
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Quantitative Nondestructive Testing of Wire Ropes Based on Features Fusion of Magnetic Image and Infrared Image
Published 2019-01-01“…An infrared image acquisition system was designed to collect the infrared image of the surface of the wire rope. Digital image processing techniques are used to segment infrared defect images. …”
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Effect of Recycled Bagasse on Cracking Behavior of Clay Materials
Published 2022-01-01“…The cracks were extracted and calculated by digital image processing technology, and the crack characteristics of samples with different bagasse contents were studied by fractal dimension and crack entropy. …”
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Study on the Effect of Amygdales on Mechanical Characteristics of Basalt Using the Combined Finite-Discrete Element Method
Published 2021-01-01“…The geometric effect of amygdales needs further studies and quantifying the shape, orientation, and statistical distribution of amygdales plays an important role in the laboratory and numerical experiments. Therefore, digital image processing (DIP) was first utilized to build a heterogeneous model (HM) to calibrate against the laboratory test results. …”
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Porous Blasting Morphology and Resistivity Response Characteristics of Soft Coal Seam
Published 2022-01-01“…The fracturing characteristics of multi-holes blasting in soft coal seam were analyzed quantitatively by using the multi-holes model blasting experiment of soft coal seam and digital image processing (DIP) and electrical resistivity tomography (ERT) techniques, and the electrical resistivity response rules before and after blasting were obtained. …”
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