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Refraction Effects of Diffraction-Enhanced Radiographic Imaging
Journal of the American Podiatric Medical Association, 2004The objective of this study was to demonstrate the ability of a novel radiographic technology—diffraction-enhanced imaging—to detect contrast in bone tissue through absorption, refraction, and scatter rejection. Diffraction-enhanced imaging uses a synchrotron x-ray beam to produce images of high contrast by measuring the object’s refraction and ultra ...
Zhong Zhong +2 more
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Scalable edge enhancement with automatic optimization for digital radiographic images
Pattern Recognition, 2004Abstract The ability to resolve fine picture detail is of paramount importance in medical imaging systems for viewing small tissue, bone structure and anatomy in X-ray images. In this paper, we present a new digital radiographic image processing system with the property of scalability and adaptability.
Lijun Yin 0001, Anup Basu, Ja Kwei Chang
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Statistical contrast enhancement of subtraction images for radiographic caries diagnosis
Oral Surgery, Oral Medicine, Oral Pathology, 1982The effects of the nonlinear contrast-enhancement technique are examined in terms of diagnostic performance obtainable from subtracted dental radiographs for a variety of simulated exposures. Conventional bitewing radiographs of patients known to be free of caries were digitized by means of a computer interfaced with a conventional television camera ...
H G, Gröndahl +3 more
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Enhancement of Radiograph Images Based on Chaos Optimization
2009 International Workshop on Intelligent Systems and Applications, 2009How to select the parameters of high-frequency emphasis filtering (HFEF) in order to enhance radiograph images, this paper presents an enhancing method based on chaos optimization algorithms (COA). Based on the properties of ergodicity, stochastic property and regularity of chaos, the chaos optimization method can get global solution with low ...
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Contrast enhancement of radiograph images based on local heterogeneity measures
2004 International Conference on Image Processing, 2004. ICIP '04., 2005Contrast enhancement of the lateral skull X-ray images is very important in orthodontic practice, cephalometric evaluation and craniofacial landmarking. In this paper we present computational techniques involving contrast enhancement of two-dimensional digitized X-ray images.
Idris El-Feghi +3 more
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Enhancement of computed tomographic scanner based digital radiographic images
The British Journal of Radiology, 1983Scanned digital radiographs are one of the imaging facilities available on the EMI 7070 scanner. The images offered by the system were found to be clinically poor and the reason for this was that the round shape of the patient was forming the major component of the image.
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Digital Image Enhancement Techniques for Dental Radiographs
2019Dental radiographs suffer frequently from issues such as low contrast and non-uniform illumination. The first step, indeed a significant step, is to enhance these digital images to prepare them for successful post-processing. This pre-processing stage assists to increase the contrast between the foreground that is the teeth and bone from the background
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Comparison of computer-generated, enhanced and conventional 2-dimensional radiographic imaging
American Journal of Orthodontics and Dentofacial Orthopedics, 2009Technological advances have attempted to improve the standard of traditional x-ray imaging. ImageIQ software (LumenIQ, Bellingham, Wash) enhances conventional radiography by producing a computer-generated, enhanced 2-dimensional (2D) image, adding depth and detail.
Michael A, Hazey +5 more
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[The application of fractal technics for the enhancement of radiographic images].
La Radiologia medica, 1989This paper deals with digital radiological image processing, with a special emphasis on quantitative measurement extraction aimed at discriminating different lung pathologies. Texture analysis of these images, not easily performed by the human eye, can be carried out by means of fractal techniques, which allow different textures to be characterized by ...
P F, Antognetti +3 more
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Homomorphic Filtering for Radiographic Image Contrast Enhancement and Artifacts Elimination
2015The contrast of radiographic images is provided at physical level by anti-scatter grids and is usually further improved at image processing stage. The known contrast improvement methods are mainly based on image non-linear manipulations that may cause residual artifacts in processed images.
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