Human Tracking Method Based on Maximally Stable Extremal Regions with Multi-Cameras

2010 ◽  
Vol 44-47 ◽  
pp. 3681-3686 ◽  
Author(s):  
Li Zhang ◽  
Guo Jun Dai ◽  
Chang Jun Wang
Keyword(s):  
Average Distance ◽  
Weighted Average ◽  
Human Tracking ◽  
Tracking Method ◽  
System A ◽  
Region Matching ◽  
Elliptic Region ◽  
Elliptic Regions ◽  
Rotational Invariant ◽  
The Right

With respect to the human tracking with multi-cameras in the video surveillance system, a human tracking method based on MSER (Maximally Stable Extremal Regions) was established. The approach transforms the human tracking into elliptic region matching. The method does elliptic region fitting to each MSER, and then selects the elliptic regions which meet some constraints. These selected elliptic regions are normalized to unity circular regions. The right matched elliptic regions are gotten by rotational invariant vectors calculation, histogram density estimation and weighted average distance calculation. Experimental results show that the approach can effectively realize the human tracking with multi-cameras.

WEIGHTED AVERAGE GEODESIC DISTANCE OF PENTADENDRITE NETWORKS

Fractals ◽  
2020 ◽  
Vol 28 (05) ◽  
pp. 2050075
Author(s):  
YUANYUAN LI ◽  
XIAOMIN REN ◽  
KAN JIANG
Keyword(s):  
Complex Networks ◽  
Geodesic Distance ◽  
Average Distance ◽  
Weighted Average ◽  
Similar Measure ◽  
Important Index ◽  
Self Similar

The average geodesic distance is an important index in the study of complex networks. In this paper, we investigate the weighted average distance of Pentadendrite fractal and Pentadendrite networks. To provide the formula, we use the integral of geodesic distance in terms of self-similar measure with respect to the weighted vector.

Location of Vertical Limb of Extensile Lateral Calcaneal Approach and Risk of Injury of the Calcaneal Branch of Peroneal Artery

2018 ◽  
Vol 40 (2) ◽  
pp. 224-230 ◽  
Author(s):  
Norachart Sirisreetreerux ◽  
Paphon Sa-ngasoongsong ◽  
Noratep Kulachote ◽  
Theerachai Apivatthakakul
Keyword(s):  
Achilles Tendon ◽  
Average Distance ◽  
Skin Flap ◽  
Wound Complication ◽  
Calcaneal Fracture ◽  
Peroneal Artery ◽  
Lateral Edge ◽  
Vertical Incision ◽  
Fresh Frozen ◽  
The Right

Background: The extensile lateral calcaneal approach is a standard method for accessing a joint depression calcaneal fracture. However, the operative wound complication rate is high. Previous studies showed a calcaneal branch of the peroneal artery contributing to the calcaneal flap blood supply. This study focuses on the location of the vertical limb in this approach correlating to the aforementioned artery and flap perfusion. Methods: Ten pairs of fresh-frozen cadaveric lower extremities were used. Extensile lateral calcaneal approach (ELCA) was carried out on both calcanei, where the vertical limb was placed at the line between the posterior border of lateral malleolus and lateral edge of the Achilles tendon for the right side (standard ELCA; sELCA) and at the lateral edge of the Achilles tendon for the left side (modified ELCA; mELCA). The identified vessel in the vertical limb incision was ligated and cut, and the horizontal limb of the incision was carried out as usual. After completion of flap elevation, 80°C water was injected into the popliteal vessel. In addition, thermal images were taken pre- and postinjection. Dye was injected subsequently, and perfusion was recorded in video format. Results: Mean pre- and postinjection skin flap temperature difference was significantly higher in mELCA (5.36°C vs 0.72°C, P = .0002). Dye perfusion patterns were significantly better in mELCA ( P = .0013). The calcaneal branch of peroneal artery was found in the vertical incision in 9 of 10 sELCA, with average distance 22.04 mm anterior to the calcaneal tuberosity and 8.22 mm proximal to superior border of the calcaneus, whereas one was found in mELCA, in which perfusion tests still appeared normal. Conclusion: The vertical limb of incision during extensile lateral calcaneal approach should be placed at the lateral edge of the Achilles tendon to avoid injuring the calcaneal branch of peroneal artery, which supplies the lateral calcaneal flap. However, further clinical research might be needed to confirm the results of this study. Clinical relevance: This study demonstrates a likely safest position for the proper incision for exposing the lateral calcaneus.

Potential of Human Tracking in Assistive Technologies for Children with Cognitive Disabilities

2017 ◽  
pp. 245-266 ◽  
Author(s):  
Mark Tee Kit Tsun ◽  
Lau Bee Theng ◽  
Hudyjaya Siswoyo ◽  
Sian Lun Lau
Keyword(s):  
Cognitive Disabilities ◽  
Research Work ◽  
Well Being ◽  
Assistive Technologies ◽  
Human Tracking ◽  
Full Time ◽  
Tracking Systems ◽  
Measurement Units ◽  
The Right ◽  
Outdoor Localization

The development of human tracking systems has had a significant influence over the evolution of Assistive Technologies for aiding children with cognitive disabilities. Techniques that range from radio frequency, Inertial Measurement Units, and Electroencephalography to the Global Positioning System and depth-based vision systems have provided tools for researchers to incorporate indoor and outdoor localization, motion and activity tracking as well as well-being monitoring into their projects. This chapter aims to introduce the latest human tracking options to consider for implementation of future Assistive Technology projects. Some example research work is discussed with emphasis on how human tracking systems can help in gathering the right data. The chapter concludes with a discussion of a proposed hybrid vision-based system for assisting in full-time supervision of children with cognitive disabilities, utilizing the chapter's central theme of sensor fusion application.

scholarly journals Endoscopic incision of protruding right ureterocele in a single collecting system: a case report

2017 ◽  
Vol 25 (4) ◽  
pp. 240-44
Author(s):  
Rinto Hariwibowo ◽  
Harrina E. Rahardjo
Keyword(s):  
External Genitalia ◽  
Excretory Urography ◽  
Voiding Cystourethrography ◽  
System A ◽  
Grade 5 ◽  
Grade Ii ◽  
The Right ◽  
Collecting System ◽  
Endoscopic Incision

Protruding ureterocele is a very rare case found in the literature. We are reporting a 21 year-old female with an intermittent protruding mass from urethra, accompanied by dysuria, hematuria, and recurrent urinary tract infection. Inspection of the external genitalia revealed a protruding mass from the urethra which could be reduced manually. Excretory urography showed bilateral single collecting systems, grade II hydronephrosis of the right kidney, and a cobra head appearance of the lower right pelvis. The patient was diagnosed with a protruding right ureterocele in a single collecting system, and thus, endoscopic incision of a ureterocele was performed. Ultrasonography which was carried out three weeks after the procedure confirmed no residual hydronephrosis or ureterocele in the bladder. Voiding cystourethrography (VCUG) underwent at a three-month-follow up revealed a grade 5 vesico-ureteral reflux (VUR) on the right side. Surgical reimplantation was then considered. In conclusion, endoscopic incision was safe and yielded good result for protruding ureteroceles, but the need for secondary surgery in several conditions should be considered.

Systemic hypertension and the right-sided cardiovascular system: a review of the available evidence

2009 ◽  
Vol 10 (2) ◽  
pp. 115-121 ◽  
Author(s):  
Roberto Pedrinelli ◽  
Giulia DellʼOmo ◽  
Enrica Talini ◽  
Maria Laura Canale ◽  
Vitantonio Di Bello
Keyword(s):  
Cardiovascular System ◽  
Systemic Hypertension ◽  
System A ◽  
The Right

scholarly journals Hardy-Type Space Associated with an Infinite-Dimensional Unitary Matrix Group

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Oleh Lopushansky
Keyword(s):  
Fock Space ◽  
Matrix Group ◽  
Unitary Matrix ◽  
Type Space ◽  
Infinite Dimensional ◽  
System A ◽  
Hardy Type ◽  
Complex Functions ◽  
Hardy Type Space ◽  
The Right

We investigate an orthogonal system of the homogenous Hilbert-Schmidt polynomials with respect to a probability measure which is invariant under the right action of an infinite-dimensional unitary matrix group. With the help of this system, a corresponding Hardy-type space of square-integrable complex functions is described. An antilinear isomorphism between the Hardy-type space and an associated symmetric Fock space is established.

Greek Compounds of the Type ισóεoς 'Equal to a God', αξιóλoγoς 'Worthy of Note', απειρoμαχας 'Ignorant of War', etc.

Mnemosyne ◽  
2007 ◽  
Vol 60 (4) ◽  
pp. 527-549
Author(s):  
Olga Tribulato
Keyword(s):  
Morphological Features ◽  
System A ◽  
The Right ◽  
Head Type

AbstractIn the majority of Greek compounds the head occurs on the right. Within this system, a number of left-oriented categories are tolerated, chiefly preposition- and verb-first compounds, but also a handful of minor groups. This article aims to provide a more thorough appraisal of a specific subtype of left-oriented compounds: those showing an adjectival head (type ισóεoς, αξιoλoγoς, etc.). It first provides an overview of the various types of left-oriented compounds in Greek (section 2). It then assesses the claim that adjectival left-oriented compounds derive from left-oriented syntactic phrases by supplying a full corpus of such forms, and comparing them to existing syntagms of the type adjective plus noun (section 3). The subsequent sections investigate the autonomous morphological reasons behind the left-headedness of such compounds, which the syntactic model does not adequately explain. Section 4.1 addresses the question of why such compounds could not have been right-oriented. Section 4.2 identifies the morphological features which—as in the case of prepositional compounds—characterise adjectives in left-oriented compounds, and are largely responsible for their placement on the left.

scholarly journals Haptic Decorating on the Surface of Virtual Clay Model

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Huang Lei ◽  
Hou Zeng-xuan ◽  
Guo Chao ◽  
Zhang Wei ◽  
Xu Jun
Keyword(s):  
Collision Detection ◽  
Force Feedback ◽  
Average Distance ◽  
Weighted Average ◽  
Mass Model ◽  
Clay Model ◽  
Exerted Pressure ◽  
First Time ◽  
The Relationship ◽  
Painting System

A novel haptic decorating method on the surface of virtual clay model is proposed. The relationship between brush deformation and endured force is researched for the first time by applying the spring-mass model to construct the 3D brush model. Then, the collision detection between virtual hairy brush and virtual clay model is researched based on collision algorithm of weighted average distance. When the hairy brush initially collides with 3D exterior, the tactility is simulated and the interactive virtual painting on the 3D exterior is carried out practically. The 3D brush stroke is formed by superimposing 3D brush footprints along the painting direction and controlling the stress of the brush. The ink quantity in the brush footprint is determined according to the proposed positive correlation between the exerted pressure on brush and outflow ink quantity of the brush. A painting storage method is also presented for storing and displaying 3D stroke painting results. The proposed method has been successfully applied in the 3D virtual painting system based on real-time force feedback technology. With this system, the 3D brush strokes with 3D half-dry and ink diffusion results can be painted with a Phantom Desktop haptic device, which effectively enhance reality to users.

Sign in / Sign up

Export Citation Format

Share Document