Tracking Multiple Fishes Using Colour Changes Identification and Enhanced Object Tracking Algorithm

2013 ◽  
Vol 284-287 ◽  
pp. 1528-1532 ◽  
Author(s):  
Wong Poh Lee ◽  
Mohd Azam Osman ◽  
Abdullah Zawawi Talib ◽  
Khairun Yahya
Keyword(s):  
Detection Algorithm ◽  
Movement Speed ◽  
Prototype System ◽  
Swimming Pattern ◽  
Cultured Fish ◽  
Water Ph ◽  
Identification Technique ◽  
Colour Changes ◽  
Set Up ◽  
Fish Tank

Tracking multiple fishes using computational methods have become a research endeavor among researchers. Different concepts have been taken such as installing water sensors and video cameras to identify movement speed, colours, shapes and swimming patterns displayed by the fishes. In this research, an enhanced algorithm consisting of motion detection algorithm and condensation algorithm is proposed. This algorithm is further integrated with colour changes identification technique which considers the changes in colour on fishes. This is to identify overlapping fishes and to detect the distance between the camera and the fishes in the water. In our case study, a cultured fish tank installed with water sensors to monitor water pH, dissolved oxygen and temperature is set up together with two network cameras. Koi fishes are chosen due to their active swimming behaviour, variety of colours and easy-to-adapt habitat in the water. A real-time prototype system which models the fish swimming pattern consisting of the enhanced algorithm and the colour changes identification is developed.

scholarly journals Guidelines for removing permanent makeup

2016 ◽  
Vol 1 (3) ◽  
Author(s):  
C.Bettina Rümmelein
Keyword(s):  
Treatment Guidelines ◽  
Yttrium Aluminium Garnet ◽  
Retrospective Evaluation ◽  
Cosmetic Procedure ◽  
Technical Point ◽  
Eye Protection ◽  
Yttrium Aluminium ◽  
Laser Treatments ◽  
Colour Changes ◽  
Set Up

<p>Permanent makeup (PMU) is a frequently implemented cosmetic procedure performed by beauticians. From a technical point, PMU is considered a facial tattoo. Failed procedures or a change of mind can lead to the desire for removal. The purpose of this retrospective evaluation of patients who came to the clinic with the desire to remove PMU between 2011 and 2015 was to explore the problems, side effects, and results in order to define treatment guidelines for other doctors. We evaluated 87 individual cases in total. In treatable cases, i.e. 52 out of the 87 cases, laser treatments were performed using a nanosecond Q-switched neodymium-doped yttrium aluminium garnet (Nd:YAG) laser. It takes between 1-12 treatments to remove the PMU. In three cases, the colour of the PMU could not be removed by laser and remained after the treatment. In two cases, laser treatment had to be terminated due to colour changes towards the green-blue spectrum. Before PMU removal, laser test shots are urgently recommended as unforeseeable colour changes can cause severe aesthetically unpleasant results. Covered up PMU (skin colour) is particularly susceptible to changes in colour. Heat-induced shrinking of the eye area can cause an ectropium. Surgical solutions also have to be taken into consideration. The use of proper eye protection with intraocular eye shields is mandatory. This article is an attempt to set up some guidelines for the treatment of PMU removal.</p>

scholarly journals Cloud screening in AVHRR digital data over Arctic regions

1993 ◽  
Vol 17 ◽  
pp. 386-390 ◽  
Author(s):  
Sonia C. Gallegos ◽  
Jeffrey D. Hawkins ◽  
Chiu Fu Cheng
Keyword(s):  
Single Channel ◽  
Screening Method ◽  
Detection Algorithm ◽  
Digital Data ◽  
Cloud Detection ◽  
Arctic Regions ◽  
Identification Technique ◽  
Multiple Band ◽  
Cloud Screening ◽  
Very High

A cloud screening method initially generated to mask cloud contaminated pixels over the ocean in visible/infrared imagery, has been revised and adapted to detect clouds over Arctic regions with encouraging results. Although the method is quite successful in eliminating very cold clouds, it underestimates low level clouds. However, this does not appear to interfere with monitoring of ice related features such as leads or the ice edge in Advanced Very High Resolution Radiometer (AVHRR) scenes. The method uses: a multiple-band approach to produce signatures not readily available in single channel data, an edge detection/dilation technique to locate features in the clouds and to join isolated edges, and a polygon identification technique to remove noise in the form of isolated pixels and separate clear regions from cloud contaminated areas. The method has been tested over a limited set of data with consistent results. Initial evaluation of the usefulness of this cloud-detection algorithm in data-fusion experiments indicate a potential in locating areas in AVHRR data which are cloud contaminated and which could yield a far superior representation of the ice features if replaced with data from a different sensor such as the Special Sensor Microwave/lmager (SSM/I).

Accelerometer Sensor Based Fall Sensing for Elderly

2015 ◽  
Vol 73 (1) ◽  
Author(s):  
Anas Mohd Noor ◽  
Hafizudin Zainudin ◽  
Normaheran Hanafi ◽  
Siti Aishah Baharuddin ◽  
Mohamad Aliff Abdul Rahim
Keyword(s):  
Mobile Communications ◽  
Signal Transmission ◽  
Cost Effective ◽  
Fall Detection ◽  
Detection Algorithm ◽  
Prototype System ◽  
Accelerometer Sensor ◽  
Wireless Signal ◽  
Overall Performance ◽  
Key Parameter

Fall can be recognized as an abnormal or action of losing an upright motion which will cause people especially elderly to suffer from pain and more seriously can affect one’s health. Being able to detect fall is key parameter to decrease the risk of severe injury to the seniors. There are such existing fall detection products on the market to assist elderly so that immediate response could be taken. However, due to complexity system, high cost and employing outside technology, these products initiate limitations such as maintenance and system enhancement. In this project, a fall detection device and system is developed using local technology, simple and cost effective. The prototype system consist of accelerometer sensing circuit, microcontroller with wireless signal transmission, Global System for Mobile Communications (GSM) notification alert for mobile phone and graphical user interface (GUI) to obtain real-time monitoring. The simple fall detection algorithm is developed to ensure false detection could be minimized. The overall performance of the developed device and system is proven reliable and practical. 

Application of the GWPS for Machining of a Transmission Housing

2000 ◽  
Author(s):  
Suren B. Rao ◽  
Gary L. Neal ◽  
Edward C. DeMeter ◽  
Martin W. Trethewey
Keyword(s):  
Reference Frame ◽  
Surface Current ◽  
Prototype System ◽  
Specific Information ◽  
Accuracy And Precision ◽  
Machining System ◽  
Housing Component ◽  
Set Up ◽  
Novel Concept ◽  
Machining Operations

Abstract One component of a modern machining system that has remained virtually unchanged, since time immemorial, is part location. The fundamental basis of current methods of part location is the concept of a physical datum surface, which is created in the first machining operation and conducting all the further machining operations with reference to this physical surface. Current workpiece positioning practice utilizes physical contacts between the fixture and workpiece for location. Due to contact feature variations, the positioning is inconsistent and variable for sequential machining set-ups. Consequently, geometric errors are induced in machined features. This paper proposes a novel concept, the Global Workpiece Positioning System (GWPS), for datum establishment. Precision artifacts are strategically located on the rough workpiece and a part reference frame is defined, with respect to these artifacts, at a qualification station. This part specific information now travels with the part to the machining station. At the machining station a probe is used to locate the artifacts on the part and determine their location with reference to the machine tool’s reference frame. Since the part reference frame is known with respect to the artifacts, its location can be derived with respect to the machine tool’s reference frame. The part program can then be modified to reflect the actual location of the part and the machining of the features carried out with a greater degree of accuracy and precision. A prototype system using the GWPS concept is implemented and presented. Experimental results validate the GWPS concept. A three-hole pattern is drilled and bored in an aircraft transmission housing component in a two set up operation. The GWPS located workpieces retained a hole center location accuracy within the required drawing specification without the use of the traditional location fixtures that are typically used for the two operational set-ups.

scholarly journals Algorithm to Image Identification and Artix-7 FPGA Implementation for Adequate Edge Detection.

2020 ◽  
Vol 8 (5) ◽  
pp. 1656-1660
Keyword(s):  
Image Processing ◽  
Edge Detection ◽  
Detection Algorithm ◽  
Canny Edge Detection ◽  
Edge Detection Algorithm ◽  
Low Contrast ◽  
Image Identification ◽  
Canny Edge ◽  
Set Up ◽  
Canny Edge Detection Algorithm

For any image identification based applications, edge detection is the primary step. The intention of the edge detection in image processing is to minimize the information that is not required in the analysis of identification of an image. In the process of reduction of insignificant data in the image, it may lead to some loss in information which in turn raise some problems like missing of boundaries with low contrast, false edge detection and some other noise affected problems. In order to reduce the effects due to noise, a modified version of popular edge detection algorithm “Canny edge detection algorithm” is proposed. Artix 7 FPGA board set up is used to implement, by using Xilinx platform the image that is obtained as output is displayed on monitor which is connected with FPGA board using connector port DVI. MATLAB Simulink is used for algorithm simulation and then it is executed on FPGA board using Xilinx platform. The results provide good motivation to use in different edge detection applications.

scholarly journals Evaluation of the Correlation Coefficient as a Prognostic Indicator for Electromechanical Servomechanism Failures

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Matteo D. L. Dalla Vedova ◽  
Paolo Maggiore ◽  
Lorenzo Pace ◽  
Alessio Desando
Keyword(s):  
Fault Detection ◽  
Short Circuit ◽  
Prognostic Indicator ◽  
Detection Algorithm ◽  
Anomalous Behavior ◽  
False Alarms ◽  
Test Environment ◽  
Electromechanical Actuator ◽  
Degradation Pattern ◽  
Identification Technique

In order to identify incipient failures due to a progressive wear of a primary flight command electromechanical actuator, several approaches could be employed; the choice of the best ones is driven by the efficacy shown in fault detection/identification, since not all the algorithms might be useful for the proposed purpose. In other words, some of them could be suitable only for certain applications while they could not give useful results for others. Developing a fault detection algorithm able to identify the precursors of the abovementioned electromechanical actuator (EMA) failure and its degradation pattern is thus beneficial for anticipating the incoming malfunction and alerting the maintenance crew such to properly schedule the servomechanism replacement. The research presented in the paper was focused to develop a fault detection/identification technique, able to identify symptoms alerting that an EMA component is degrading and will eventually exhibit an anomalous behavior, and to evaluate its potential use as prognostic indicator for the considered progressive faults (i.e. frictions and mechanical backlash acting on transmission, stator coil short circuit, rotor static eccentricity). To this purpose, an innovative model based fault detection technique has been developed merging several information achieved by means of Fast Fourier Transform (FFT) analysis and proper "failure precursors" (calculated by comparing the actual EMA responses with the expected ones). To assess the performance of the proposed technique, an appropriate simulation test environment was developed: the results showed an adequaterobustness and confidence was gained in the ability to early identify an eventual EMA malfunctioning with low risk of false alarms or missed failures.

scholarly journals A Fractional Ramp Generator with Improved Linearity and Phase-Noise Performance for the Use in Heterodyne Measurement Systems

2005 ◽  
Vol 3 ◽  
pp. 75-81
Author(s):  
T. Musch ◽  
B. Schiek
Keyword(s):  
Phase Noise ◽  
Prototype System ◽  
Abstract Concepts ◽  
Measurement Sensitivity ◽  
Ramp Generator ◽  
Basic Measurement ◽  
Phase Noise Performance ◽  
Linearity Error ◽  
Set Up ◽  
Frequency Detector

Abstract. Concepts for the generation and the measurement of highly linear frequency ramps are presented. The fractional ramp synthesiser concept shown here is able to generate frequency ramps with a very low phase noise level, a very good frequency linearity and reproducibility. Related to the bandwidth of the generated frequency ramps of 4.5 GHz a relative linearity error below 4·10–10 is demonstrated in a prototype system. This linearity error is close to the limit set by the phase noise floor of the ramp generators and marks a significant improvement over existing aproaches (Musch and Schiek, 2000). The basic measurement sensitivity due to the phase noise is 1.8·10–10 without averaging. As the phase noise is important for the linearity of the frequency ramp the set-up has to be optimised for a good phase noise behaviour, too. In order to achieve this good phase noise a special phase-frequency detector is introduced that is especially designed for the use in a fractional phase locked loop.

scholarly journals Nutrient Dynamics of an Aquaponic System in Southern Thailand

2019 ◽  
Vol 11 (17) ◽  
pp. 57
Author(s):  
Somsak Maneepong
Keyword(s):  
Nutrient Dynamics ◽  
Nutrient Deficiency ◽  
Ph Control ◽  
Integrated System ◽  
Growth Stages ◽  
Waste Discharge ◽  
Nutrient Use ◽  
Complete Diet ◽  
Water Ph ◽  
Fish Tank

Aquaponics is an integrated system of recirculation aquaculture and soilless culture that mainly aims to reduce water requirements, reduce waste discharge and maximize nutrient use. In the present study, an aquaponic system consisting of a 500 L fish tank, sedimentation and pH control tank, degassing tank and three vegetable growing beds was assembled and tested for 17 weeks. Fifty Nile tilapias (Oreochromis niloticus) were reared and fed thrice daily with a complete diet containing 32% protein. Buffer of solid rocks (dead corals) were installed for pH control. Water convolvulus (Ipomoea aquatica) and Tokyo Bekana (Brassica rapa) were rotationally grown at different growth stages. Water samples were collected once a week to analyze pH and NH3/NH4+, NO3-, H2PO4-/HPO42-, SO42-, K, Na, Ca, Mg and Fe concentrations. Fish weight increased from 50 g/fish at the beginning of the experiment to 228 g/fish after 15 weeks. Water pH increased from 6.0 before rearing to 7.0 on the 4th week and varied over the range of 6.9 to 7.0 until the end of the experiment without any additional acid or alkali. Total NH3/NH4+ increased to 10.2 mg-N/L on the 2nd week and rapidly declined to levels below 2.0 mg-N/L. Phosphate, SO42-, Na and Mg accumulated in the system, whereas Ca gradually increased and reached equilibrium at 47&plusmn;2 mg/L. K and NO2-/NO3- varied considerably at concentrations lower than the general requirement of the vegetables. The first crops of vegetables initially grew well, but growth rates declined remarkably and latter crops showed complex nutrient deficiency. The system could be maintained for 17 weeks without waste discharge.

Web-enabled Customer-oriented Product Concept Formation via Laddering Technique and Kohonen Association

2002 ◽  
Vol 10 (4) ◽  
pp. 299-310 ◽  
Author(s):  
Chun-Hsien Chen ◽  
Li Pheng Khoo ◽  
Wei Yan
Keyword(s):  
New Product Development ◽  
Concept Formation ◽  
Early Stage ◽  
Golf Club ◽  
Prototype System ◽  
Product Concept ◽  
Functional Attributes ◽  
Design Alternatives ◽  
Design Solutions ◽  
Set Up

Product concept formation is regarded as a key activity in new product development and manufacturing (NPD&M). It may determine whether a NPD&M project will be successful or not. In the early stage of product concept formation, owing to the huge space of possible solutions as well as incomplete and imprecise information, it is difficult for designers to generate functional attributes and subsequently select customer-preferred design solutions. Although much research has been attempted to tackle this problem, few of them are capable of appropriately making a trade-off between initial design requirements of designers and those of customers. This study aims at establishing a prototype web-based customer-oriented product concept formation system. The prototype system involves customers in generating functional attributes and design alternatives as well as selecting preferred design solutions. To realize these, the laddering technique is first employed to set up a so-called functional attribute hierarchy (FAH) comprising different levels ranging from generic to specific abstraction. With the FAH established, diverse design alternatives can then be configured morphologically using a combination of alternative values. Consequently, through customer interaction via the web, the Kohonen association algorithm is utilized to facilitate the selection of preferred design alternatives according to multicultural customer groups. The details of the prototype system as well as a case study on wood golf club design, which is used to illustrate its capability, are presented in this paper.

An Approach to Design a SOA Services Governance Architecture for an u-Healthcare System with Mobility

2012 ◽  
Vol 3 (2) ◽  
pp. 36-65 ◽  
Author(s):  
Weider D. Yu ◽  
Jatin Patel ◽  
Vishal Mehta ◽  
Ashish Joshi
Keyword(s):  
Healthcare System ◽  
Medical Service ◽  
Service Oriented Architecture ◽  
Ease Of Use ◽  
Prototype System ◽  
Service Oriented ◽  
Ubiquitous System ◽  
Set Up ◽  
Governance Architecture ◽  
Wireless Mobile

Ubiquitous health (u-Health) system is focused on the concept of providing medical service and assistance to the patients “anywhere and anytime” regardless of their locations. Existing mobile u-Healthcare systems have problems in lacking one or the other S.C.A.L.E. (Scalability, Connectivity, Adaptability, Liability, and Ease-of-use) criterion that any ubiquitous system must support. They become expensive during set up, reconfiguration, and modification as no proper and efficient solution is available. Also, they lack security, privacy, and wireless accessibility features so all these problems can prevent the system from being expanded widely. The objective of this paper is to implement a u-Healthcare system based on wireless mobile technology using Service Oriented Architecture (SOA). Applying Service Governance of Service Oriented Architecture helps make all services more secure, reusable, interoperable, available, and imposes all the features a ubiquitous system should have. A prototype system uSG-Health was developed using the approach for demonstrating the functionality and ability of the proposed u-Healthcare system.

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