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Image quality evaluation of chest for computed radiography
(2013-04-16)
The daily-to-day of medical practice is marked by a constant search for an accurate diagnosis and therapeutic assessment. For this purpose the doctor serves up a wide variety of imaging techniques, however, the methods ...
Wavelets in the computed evaluation of mammographic accreditation phantom images
(2013-04-16)
This paper presents a novel approach to the computed assessment of a mammographic phantom device. The approach shown here is fully automated and is based on the automatic selection of the region of interest, in the use of ...
Ridge-based fingerprint matching using hough transform
(Institute of Electrical and Electronics Engineers (IEEE), Computer Soc, 2005-12-01)
Despite the efficacy of minutia-based fingerprint matching techniques for good-quality images captured by optical sensors, minutia-based techniques do not often perform so well on poor-quality images or fingerprint images ...
Ultrasonic Image Compounding Method Based on the Instantaneous Phase Image
(Ieee, 2016-01-01)
The quality of ultrasonic images depends on array configuration, image beamforming algorithm, propagation modes and signal-to-noise ratio. Some alternatives to improve image quality are related to the use of coherence ...
Improving synthetic aperture image by image compounding in beamforming process
(2011-11-10)
In this work, signal processing techniques are used to improve the quality of image based on multi-element synthetic aperture techniques. Using several apodization functions to obtain different side lobes distribution, a ...
Identification of foliar diseases in cotton crop
(2012-02-13)
The pathogens manifestation in plantations are the largest cause of damage in several cultivars, which may cause increase of prices and loss of crop quality. This paper presents a method for automatic classification of ...
Ultrasonic image compounding method based on the instantaneous phase image
(2017-03-08)
The quality of ultrasonic images depends on array configuration, image beamforming algorithm, propagation modes and signal-to-noise ratio. Some alternatives to improve image quality are related to the use of coherence ...
Unsupervised measures for estimating the effectiveness of image retrieval systems
(2013-12-01)
The main objective of Content-Based Image Retrieval (CBIR) systems is to retrieve a ranked list containing the most similar images of a collection given a query image, by taking into account their visual content. Although ...
Determination of gold standard techniques for skull and chest in pediatric computed radiography
(2015-01-01)
Pediatric patients are more radiosensitivity and have a longer life expectancy than adults, thus exposing them to a greater risk of developing cancer. The most appropriate radiographic technique for pediatric radiology ...