Results 261 to 270 of about 33,911 (307)

Scalable edge enhancement with automatic optimization for digital radiographic images

Pattern Recognition, 2004
Abstract 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, Anup Basu, Ja Kwei Chang
exaly   +4 more sources

Enhancement for computed radiographic images

Proceedings Eighth IEEE Symposium on Computer-Based Medical Systems, 2002
Proposes an image enhancement algorithm that converts raw data from a storage phosphor scanner into a diagnostically optimized image. The spatial segmentation algorithm is applied to extract the body part of a clinical image, and histogram analysis is then used to develop the tone-scale for the region of interest.
R.S. Gaborski, B.K. Jang
openaire   +1 more source

Digital techniques for image enhancement of radiographs

International Journal of Bio-Medical Computing, 1971
Abstract This paper deals with digital, position variant and invariant linear and nonlinear techniques for image enhancement (Rozenfeld, 1969). The radiographic system, the image processing and display system, and the human visual system are discussed.
R P, Kruger, E L, Hall, S J, Dwyer, G S, Lodwick   +3 more
openaire   +2 more sources

Refraction Effects of Diffraction-Enhanced Radiographic Imaging

Journal of the American Podiatric Medical Association, 2004
The 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, Dale R. Sumner, Carol Muehleman   +2 more
openaire   +1 more source

A Method of Radiographic Image Quality Enhancement

2013 Fifth International Conference on Measuring Technology and Mechatronics Automation, 2013
The quality of the image is one of the important influential factors in the process of defect evaluation of weld radiographic image. To improve the brightness and contrast of digital image of weld radiographic film, a new quality enhancement method in accordance with human visual system is proposed.
null Wei-Lei Mu, null Jian-Min Gao, null Hong-Quan Jiang, null Fu-Min Chen, null Zhi-Yong Gao, null Kun Chen, null Chang-Ying Dang   +6 more
openaire   +1 more source

Linear Spatial Frequency Filtering for Enhancement of Radiographic Images

Radiology, 1972
Abstract One-dimensional mathematical models were used to investigate the ability of a Wiener filter, a modified Wiener filter, a simple matched filter, and an optimal matched filter to improve radiographic detection. Selective enhancement was not possible.
M C, Ziskin, F J, Shea
openaire   +2 more sources

Manipulation of images on radiographs to enhance picture quality

British Journal of Oral and Maxillofacial Surgery, 2011
he advent of digital radiography has helped clinicians in everal areas of daily practice – instant and convenient access o radiographs, ability to view different examinations easily nd quickly, and the scope to modify images to obtain better clarity of disease processes.
Lindsay, Falla, K, Shekar, M, Singh, P A, Brennan   +3 more
openaire   +2 more sources

Enhancing Dental Radiographic Images in Spline-Type Spaces

2014 16th International Symposium on Symbolic and Numeric Algorithms for Scientific Computing, 2014
The aim of this paper is to propose a method to enhance the acquisition resolution of dental radiographic images to facilitate the clinical examination and interpretation. The algorithm is based on the approximation properties of spline-type spaces with multiple generators. These spaces are obtained by applying a discrete group of translation operators
Darian M. Onchis, Smaranda Laura Gotia
openaire   +1 more source

Fuzzy entropy based interactive enhancement of radiographic images

Journal of Medical Engineering & Technology, 2007
In certain radiographic images, fuzziness exists due to the vague nature of image characteristics and limitations of visual perception. Accordingly, a gap exists between the information content of an image and the information that can be retrieved. In this paper, a new fuzzy logic based intensification operator has been proposed for enhancement of ...
openaire   +2 more sources