Results 171 to 180 of about 405,367 (215)

Electronic techniques for radiological image processing

Medical & Biological Engineering, 1969
A television image processing system for diagnostic radiology using the techniques of contrast enhancement, aperture correction, and highlight inversion is described together with a method for objectively evaluating its usefulness. The evaluation is done by comparing error rates of observers viewing a specially prepared set of chest radiographs through
G, Revesz, H, Kundel, C, Haas
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Processing Image Data by Hybrid Techniques

IEEE Transactions on Systems, Man, and Cybernetics, 1977
Transform-DPCM (hybrid) techniques are applied to image data processing. For achieving bandwidth reduction, sample selection (threshold or variance) and variable bit allocation are adopted. The hybrid process is compared with the two-dimensional transform method in terms of bit rate, mean-square error, and computational complexity.
K. R. Rao 0001, M. A. Narasimhan, W. J. Gorzinski   +2 more
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Image processing techniques for laser images

Proceedings of 1996 Canadian Conference on Electrical and Computer Engineering, 2002
This paper presents the signal processing method of laser images used for detection of small collinear obstacles in helicopter airborne applications. It is very difficult, if not almost impossible, for a regular passive imaging sensor based on CCD detectors to detect such small, remote objects.
I. Saban, S. Faibish
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HUMAN FACE IMAGE PROCESSING TECHNIQUES

International Journal of Image and Graphics, 2001
Human face image processing techniques have many applications, such as in security operations, entertainment, medical imaging and telecommunications. In this paper, we provide an overview of existing computer algorithms for face detection and facial feature location, face recognition, image compression and animation.
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Image Processing Techniques for Glaucoma Detection

2011
Glaucoma is a disease caused due to neurodegeneration of the optic nerve which leads to blindness. It can be evaluated by monitoring intra ocular pressure (IOP), visual field and the optic disc appearance (cup-to-disc ratio). Glaucoma increases the cup to disc ratio (CDR), affecting the peripheral vision loss.
Mishra Madhusudhan, Nath Malay, S. R. Nirmala, Dandapat Samerendra   +3 more
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Wood surface analysis with image processing techniques

2014 22nd Signal Processing and Communications Applications Conference (SIU), 2014
In this study, quality of class of final product is intended to automatically determine by setting properly distribution and number of defects on wood. Nowadays number of defects and quality of wood is determined by their distribution. The most common type of defect is called knot by reducing the resistance of a wooden part.
Cetiner, Ibrahim, Cetiner, Halit, Var, A. Ali   +2 more
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Imaging Techniques and Processes

1980
Two important imaging processes undertaken in radiography are subtraction and duplication and these will be discussed. Furthermore, the dividing line between radiographic technique and radiographic photography is indistinct and important imaging principles are involved in certain techniques which up to now have either not been mentioned or only briefly
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Adaptive Image Processing Techniques

SPIE Proceedings, 1988
Adaptive image processing schemes can be classified as open-loop, input sensing, invariant-expectation, and model reference systems. Two major adaptive image processing system mechanisms, processing status measurement and parameter adjustment, are described and a multi-resolution approach is developed.
James S. Lee, Paul V. Budak, Charlotte R. Lin, Robert M. Haralick   +3 more
openaire   +1 more source

Palm Image Recognition Using Image Processing Techniques

2013
In this research, we find the palm from the hand image firstly. And then distinguish the fingers using the triangular calculation method. In the palm detection, the color of skin, background subtraction, hand image extraction, edge detection and histogram analysis are used to achieve the goal.
Wen-Yuan Chen, Yu-Ming Kuo, Chin-Ho Chung   +2 more
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Image Processing Techniques for Braille Writing Recognition

2005
379
Néstor Falcón, Carlos M. Travieso, Jesús B. Alonso, Miguel A. Ferrer   +3 more
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