scholarly journals INVESTIGATION OF CRACKS IN LINING CONCRETE BY USING SEQUENTIAL IMAGE ANALYSIS

2006 ◽  
Vol 62 (3) ◽  
pp. 558-566 ◽  
Author(s):  
Nobuo SANO ◽  
Tetsuo ITO ◽  
Koji BABA ◽  
Kazuo NISHIMURA ◽  
Isamu YOSHITAKE ◽  
...  
Keyword(s):  
Image Analysis ◽  
Sequential Image

scholarly journals Assessing the disturbance potential of small unoccupied aircraft systems (UAS) on gray seals (Halichoerus grypus) at breeding colonies in Nova Scotia, Canada

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e4467 ◽  
Author(s):  
Lauren Arona ◽  
Julian Dale ◽  
Susan G. Heaslip ◽  
Michael O. Hammill ◽  
David W. Johnston
Keyword(s):  
Image Analysis ◽  
Nova Scotia ◽  
Acoustic Properties ◽  
Matched Pair ◽  
Short Term ◽  
Gray Seal ◽  
Aircraft Systems ◽  
Sequential Image ◽  
Young Of The Year ◽  
Gray Seals

The use of small unoccupied aircraft systems (UAS) for ecological studies and wildlife population assessments is increasing. These methods can provide significant benefits in terms of costs and reductions in human risk, but little is known if UAS-based approaches cause disturbance of animals during operations. To address this knowledge gap, we conducted a series of UAS flights at gray seal breeding colonies on Hay and Saddle Islands in Nova Scotia, Canada. Using a small fixed-wing UAS, we assessed both immediate and short-term effects of surveys using sequential image analysis and between-flight seal counts in ten, 50 m2 random quadrats at each colony. Counts of adult gray seals and young-of-the-year animals between first and second flights revealed no changes in abundance in quadrats (matched pair t-test p > 0.69) and slopes approaching 1 for linear regression comparisons (r2 > 0.80). Sequential image analysis revealed no changes in orientation or posture of imaged animals. We also assessed the acoustic properties of the small UAS in relation to low ambient noise conditions using sound equivalent level (Leq) measurements with a calibrated U-MIK 1 and a 1/3 octave band soundscape approach. The results of Leq measurements indicate that small fixed-wing UAS are quiet, with most energy above 160 Hz, and that levels across 1/3 octave bands do not greatly exceed ambient acoustic measurements in a quiet field during operations at standard survey altitudes. As such, this platform is unlikely to acoustically disturb gray seals at breeding colonies during population surveys. The results of the present study indicate that the effects of small fixed-wing UAS on gray seals at breeding colonies are negligible, and that fixed-wing UAS-based approaches should be considered amongst best practices for assessing gray seal colonies.

Sequential image analysis and measurement of pigmented lesions: false variations due to patient positioning

2003 ◽  
Vol 28 (6) ◽  
pp. 657-660
Author(s):  
F. Vazquez-Lopez ◽  
J. A. Manjón-Haces ◽  
M. Lopez-Escobar ◽  
N. Perez-Oliva ◽  
A. A. Marghoob
Keyword(s):  
Image Analysis ◽  
Patient Positioning ◽  
Pigmented Lesions ◽  
Sequential Image

Study on Vehicle Hook Buffer Mechanism Based on Sequential Image Analysis

2013 ◽  
Vol 365-366 ◽  
pp. 482-485
Author(s):  
Rui Li ◽  
Ping Xu ◽  
Yuan Mu Zhong ◽  
Long Xi Liu
Keyword(s):  
Image Analysis ◽  
Template Matching ◽  
High Speed ◽  
Feature Recognition ◽  
Energy Change ◽  
Sequential Image ◽  
Energy Absorbing ◽  
Sequential Images ◽  
Short Time ◽  
The Impact

As the impact process of train energy absorbing components occurs in a short time, high-speed cameras are used to record it and the amount of deformation and energy change of the energy absorbing components can be obtained by analyzing sequential images. The method of sequential images analysis presented is based on feature recognition of mark points by template matching method. In addition to this, error introduced by the camera positions is corrected to obtain more exact results. During the process of collision, the amount of its deformation is 52mm and its energy change is 2.69KJ when using the sequential image analysis.

scholarly journals High Performance PTV Software for Sequential Image Analysis

1996 ◽  
Vol 16 (Supplement2) ◽  
pp. 31-34
Author(s):  
Motonobu YOSHIMOTO ◽  
Tomomasa UEMURA
Keyword(s):  
Image Analysis ◽  
High Performance ◽  
Sequential Image

Directional Filtering for Sequential Image Analysis

2008 ◽  
Vol 15 ◽  
pp. 902-905 ◽  
Author(s):  
Juho Vihonen ◽  
Juha Jylha ◽  
Timo Ala-Kleemola ◽  
Marja Ruotsalainen ◽  
Jarmo Kauppila ◽  
...  
Keyword(s):  
Image Analysis ◽  
Directional Filtering ◽  
Sequential Image

Automated Image Analysis Of Nuclear And Cytoplasmic Changes In Exfoliated Cells From Tracheas Treated With Carcinogen

1977 ◽  
Vol 35 ◽  
pp. 220-221
Author(s):  
S.F. Stinson ◽  
J.C. Lilga ◽  
M.B. Sporn
Keyword(s):  
Image Analysis ◽  
Pattern Analysis ◽  
Relative Proportion ◽  
Automated Image Analysis ◽  
Image Analyzer ◽  
Cross Sectional ◽  
Exfoliated Cells ◽  
Neoplastic Lesions ◽  
Analysis System ◽  
Morphologic Criterion

Increased nuclear size, resulting in an increase in the relative proportion of nuclear to cytoplasmic sizes, is an important morphologic criterion for the evaluation of neoplastic and pre-neoplastic cells. This paper describes investigations into the suitability of automated image analysis for quantitating changes in nuclear and cytoplasmic cross-sectional areas in exfoliated cells from tracheas treated with carcinogen.Neoplastic and pre-neoplastic lesions were induced in the tracheas of Syrian hamsters with the carcinogen N-methyl-N-nitrosourea. Cytology samples were collected intra-tracheally with a specially designed catheter (1) and stained by a modified Papanicolaou technique. Three cytology specimens were selected from animals with normal tracheas, 3 from animals with dysplastic changes, and 3 from animals with epidermoid carcinoma. One hundred randomly selected cells on each slide were analyzed with a Bausch and Lomb Pattern Analysis System automated image analyzer.

Progress In The Practical Application Of Automated Image Analysis To Tem Negatives

1977 ◽  
Vol 35 ◽  
pp. 214-217
Author(s):  
F. A. Heckman ◽  
E. Redman ◽  
J.E. Connolly
Keyword(s):  
Image Analysis ◽  
Image Quality ◽  
Exposure Time ◽  
Image Contrast ◽  
Automated Image Analysis ◽  
Practical Application ◽  
Factors Affecting ◽  
High Image Quality ◽  
Qualitative Evidence ◽  
Comprehensive Study

In our initial publication on this subject1) we reported results demonstrating that contrast is the most important factor in producing the high image quality required for reliable image analysis. We also listed the factors which enhance contrast in order of the experimentally determined magnitude of their effect. The two most powerful factors affecting image contrast attainable with sheet film are beam intensity and KV. At that time we had only qualitative evidence for the ranking of enhancing factors. Later we carried out the densitometric measurements which led to the results outlined below.Meaningful evaluations of the cause-effect relationships among the considerable number of variables in preparing EM negatives depend on doing things in a systematic way, varying only one parameter at a time. Unless otherwise noted, we adhered to the following procedure evolved during our comprehensive study:Philips EM-300; 30μ objective aperature; magnification 7000- 12000X, exposure time 1 second, anti-contamination device operating.

Sign in / Sign up

Export Citation Format

Share Document