Results 51 to 60 of about 434,958 (165)

Robust and secure perceptual image hashing in the transform domain

open access: yes
The rapid development of multimedia devices such as computers, network technologies, and cell phones have made it easier for users to create, broadcast, convey, share, store, and distribute multimedia data including images, videos and audio files on a ...
Prungsinchai, Supakorn
core  

On-line re-training and segmentation with reduction of the training set: application to the left ventricle detection in ultrasound imaging

open access: yes, 2012
The segmentation of the left ventricle (LV) still constitutes an active research topic in medical image processing field. The problem is usually tackled using pattern recognition methodologies.
Jacinto C. Nascimento   +3 more
core   +1 more source

Efficient load balancing techniques for image analysis on an M-SIMD machine [PDF]

open access: yes
The computational requirements for the real time processing of image sequences is sufficiently high that some form of parallel hardware is essential. In the analysis of a sequence of images the areas of interest are moving objects which usually occupy ...
Nudd, G. R., Kerbyson, D. J., Zheng, Y.
core  

Processing of CW Doppler images to extract velocity profile [PDF]

open access: yes, 2012
The present work aims to find a good way to automatically trace the velocity profile in vessels shown in continuous wave Doppler spectrograms, replacing the more traditional manual tracing, easy to perform but rich in drawbacks.
Dainese, Clara
core  

Intensity-based gain adaptive unsharp masking for image contrast enhancement

open access: yes, 2012
With the increasing application of image processing techniques in various areas, contrast enhancement still remains as a core pre-processing element that critically affects the performance of subsequent procedures. Among the available enhancement methods,
Shi, HY   +11 more
core   +1 more source

Image processing in echography and MRI

open access: yes, 2005
This work deals with image processing for three medical imaging applications: speckledetection in 3D ultrasound, left ventricle detection in cardiac magnetic resonance imaging(MRI) and flow feature visualisation in velocity MRI.For speckle detection, a ...
Carmo, Bernardo S., Carmo, Bernardo S
core  

Application of image processing techniques for frog call classification

open access: yes, 2015
Frogs have received increasing attention due to their effectiveness for indicating the environment change. Therefore, it is important to monitor and assess frogs.
Towsey, Michael   +9 more
core   +1 more source

Cardiac image processing techniques

open access: yesCardiometry, 2014
Heart disease is the leading cause of death in the modern world. Cardiac image processing is now routinely applied for detecting, classification and diagnosis of heart diseases. One of the most common uses of processing methods that are now widely applied are cardiac segmentation [1] and registration methods [2], that are used in order to extract the ...
openaire   +1 more source

The Optimisation of Elementary and Integrative Content-Based Image Retrieval Techniques

open access: yes
Image retrieval plays a major role in many image processing applications. However, a number of factors (e.g. rotation, non-uniform illumination, noise and lack of spatial information) can disrupt the outputs of image retrieval systems such that they ...
Aboaisha, Hosain
core  

Saliency for Image Description and Retrieval [PDF]

open access: yes, 2006
We live in a world where we are surrounded by ever increasing numbers of images. More often than not, these images have very little metadata by which they can be indexed and searched.
Hare, Jonathon S., Hare, Jonathon S
core  

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