Now showing items 1-10 of 3110
An image quality index based on coefficients of spatial association with an application to image fusion
In the last decade, image quality indices have received considerable attention to quantify the dissimilarity between two images. The codispersion coefficient, commonly used in spatial statistics to address the association ...
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 ...
Effect of alternative photostimulable phosphor plates erasing times on subjective digital image quality
(British Inst Radiology, 2010-01-01)
Objective: To evaluate the influence of alternative erasing times of DenOptix (R) (Dentsply/Gendex, Chicargo, IL) digital plates oil subjective image quality and the probability of double exposure image not Occurring.Methods: ...
Identification of foliar diseases in cotton crop
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
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 ...
Application of wavelets to the evaluation of phantom images for mammography quality control
(Iop Publishing Ltd, 2012-11-07)
The main goal of this work was to develop a methodology for the computed analysis of American College of Radiology (ACR) mammographic phantom images, to be used in a quality control (QC) program of mammographic services. ...
Image evaluation with chemometric strategies for quality control of paints
(Elsevier Science BvAmsterdamHolanda, 2007)
Online Mammographic Images Database for Development and Comparison of CAD Schemes
Considering the difficulties in finding good-quality images for the development and test of computer-aided diagnosis (CAD), this paper presents a public online mammographic images database free for all interested viewers ...
Generating Segmented Quality Meshes from Images
Techniques devoted to generating triangular meshes from intensity images either take as input a segmented image or generate a mesh without distinguishing individual structures contained in the image. These facts may cause ...
An in vitro comparison of subjective image quality of panoramic views acquired via 2D or 3D imaging
Objectives: The objective of this study is to compare subjective image quality and diagnostic validity of cone-beam CT (CBCT) panoramic reformatting with digital panoramic radiographs. Materials and methods: Four dry human ...