Arrangement: A spatial relation comparing part embeddings and its use in medical image comparisons

2005 ◽  
pp. 132-148 ◽  
Author(s):  
Hemant D. Tagare ◽  
Frans Vos ◽  
Conrade C. Jaffe ◽  
James S. Duncan
Keyword(s):  
Medical Image ◽  
Spatial Relation

Focusing of Visuospatial Attention

2001 ◽  
Vol 15 (4) ◽  
pp. 256-274 ◽  
Author(s):  
Caterina Pesce ◽  
Rainer Bösel
Keyword(s):  
Reaction Times ◽  
Visual Space ◽  
Spatial Relation ◽  
Stimulus Onset ◽  
Visuospatial Attention ◽  
Task Demands ◽  
Time Interval ◽  
Behavioral Studies ◽  
Task Conditions ◽  
Simple Rt

Abstract In the present study we explored the focusing of visuospatial attention in subjects practicing and not practicing activities with high attentional demands. Similar to the studies of Castiello and Umiltà (e. g., 1990) , our experimental procedure was a variation of Posner's (1980) basic paradigm for exploring covert orienting of visuospatial attention. In a simple RT-task, a peripheral cue of varying size was presented unilaterally or bilaterally from a central fixation point and followed by a target at different stimulus-onset-asynchronies (SOAs). The target could occur validly inside the cue or invalidly outside the cue with varying spatial relation to its boundary. Event-related brain potentials (ERPs) and reaction times (RTs) were recorded to target stimuli under the different task conditions. RT and ERP findings showed converging aspects as well as dissociations. Electrophysiological results revealed an amplitude modulation of the ERPs in the early and late Nd time interval at both anterior and posterior scalp sites, which seems to be related to the effects of peripheral informative cues as well as to the attentional expertise. Results were: (1) shorter latency effects confirm the positive-going amplitude enhancement elicited by unilateral peripheral cues and strengthen the criticism against the neutrality of spatially nonpredictive peripheral cueing of all possible target locations which is often presumed in behavioral studies. (2) Longer latency effects show that subjects with attentional expertise modulate the distribution of the attentional resources in the visual space differently than nonexperienced subjects. Skilled practice may lead to minimizing attentional costs by automatizing the use of a span of attention that is adapted to the most frequent task demands and endogenously increases the allocation of resources to cope with less usual attending conditions.

A Comparative Study of Ant and Genetic Algorithms in Digital Mammography

2018 ◽  
pp. 194-200
Author(s):  
J. Magelin Mary ◽  
Chitra K. ◽  
Y. Arockia Suganthi
Keyword(s):  
Genetic Algorithm ◽  
Image Processing ◽  
Medical Image ◽  
Medical Image Processing ◽  
Processing Technique ◽  
Input Image ◽  
Image Processing Technique ◽  
Computational Time ◽  
Image Mining ◽  
The Individual

Image processing technique in general, involves the application of signal processing on the input image for isolating the individual color plane of an image. It plays an important role in the image analysis and computer version. This paper compares the efficiency of two approaches in the area of finding breast cancer in medical image processing. The fundamental target is to apply an image mining in the area of medical image handling utilizing grouping guideline created by genetic algorithm. The parameter using extracted border, the border pixels are considered as population strings to genetic algorithm and Ant Colony Optimization, to find out the optimum value from the border pixels. We likewise look at cost of ACO and GA also, endeavors to discover which one gives the better solution to identify an affected area in medical image based on computational time.

Detection and Classification of Brain Tumor from MRI Medical Image using Wavelet Transform and PSO based LLRBFNN Algorithm

2018 ◽  
Vol 6 (1) ◽  
pp. 18-23 ◽  
Author(s):  
T.Gopi Krishna ◽  
◽  
K.V.N. Sunitha ◽  
S. Mishra ◽  
◽  
...  
Keyword(s):  
Brain Tumor ◽  
Wavelet Transform ◽  
Medical Image

Medical Image Lossless Compression Using Improvised DCT

2019 ◽  
Vol 7 (4) ◽  
pp. 682-685
Author(s):  
Hema Joshi ◽  
Pawan Kumar Mishra
Keyword(s):  
Medical Image ◽  
Lossless Compression

Comparative Study of PCA and SPIHT Methods in Medical image Compression

2016 ◽  
Vol 3 (3) ◽  
pp. 1
Author(s):  
KIRAN RAVI ◽  
KAMARGAONKAR CHANDRASHEKHAR ◽  
SHARMA MONISHA ◽  
◽  
◽  
...  
Keyword(s):  
Image Compression ◽  
Comparative Study ◽  
Medical Image ◽  
Medical Image Compression
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