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Tytuł:
Influence of Different Plants Extracts on Silver Nanopar ticles Green Synthesis
Autorzy:
Velgosova, O.
Mražíková, A.
Veselovský, L.
Willner, J.
Fornalczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/351682.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
nanoparticles
silver
biosynthesis
reduction agents
TEM
Opis:
Three plants extracts were used for biosynthesis of Ag nanoparticles (AgNPs). AgNPs nucleation process requires effective reduction agents which secure Ag+ to Ag0 reduction and also stabilizing/capping agents. The UV-vis and TEM observation revealed that the best results were obtained by R. officinalis leaf extract. The strong SPR band peak appeared at the wavelength 418 nm. Synthetized AgNPs were globular, fine (~20 nm), uniform and stabile throughout the experiment. A rapid rate of AgNPs synthesis was also significant and economically advantageous factor. Fine (10-20 nm) and globular nanoparticles were synthetized also by U. dioica leaf extract, but the stability of nanoparticles was not permanent. Despite V. vitis-idaea fruit extract contains a lot of reducing agents, UV-vis did not confirm the presence of AgNPs in solution. Synthetized Ag particles were very unstable, Ag particles agglomerated very fast and clearly indicated sediment was formed.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 2; 665-670
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Problems of Processing and Separation of Multi-Material Electronic Waste in Terms of Circular Economy
Autorzy:
Lisińska, M.
Fornalczyk, A.
Willner, J.
Powiązania:
https://bibliotekanauki.pl/articles/356622.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
electronic waste
mobile phone
metals recovery
circular economy
Opis:
The article presents current methods used for the recovery of metals from used electronic equipment. The analysis of the composition and structure of the material was made on the example of one of the most popular and widespread e-waste - used cell phones. The article was address the problems of processing and separation of individual components included in these heterogeneous wastes. The main purpose of the conducted research was to prepare the tested material in such a way that the recovery of metalsin the further stages of its processing was as effective as possible. The results of attempts to separate individual material fractions with magnetic, pyrometallurgical or hydrometallurgical methods will be presented. An analysis of the possibilities of managing electronic waste in terms of the circular economy will be made.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 4; 1639-1643
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bioleaching of indium and tin from used LCD panels
Autorzy:
Willner, J.
Fornalczyk, A.
Gajda, B.
Saternus, M.
Powiązania:
https://bibliotekanauki.pl/articles/110195.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
bioleaching
ITO
indium recovery
tin recovery
LCD panels
Opis:
The demand for indium is increasing every year. This metal is mainly used as indium tin oxide (ITO) in the production of transparent conductive coatings for liquid crystal displays (LCD). This paper focuses on biohydrometallurgical methods used for the recovery of indium and tin from LCD sourced from spent mobile phones. Bioleaching experiments were carried out in two different leaching media: 9K medium and H2SO4 solution, using mixed, adapted bacteria Acidothiobacillus ferrooxidans and Acidothiobacillus thiooxidans. The main aim of this study was to evaluate the potential and efficiency of indium and tin extraction in the presence of acidophilic microorganisms. Within 35 days, using 9K medium, 55.6% of indium was bioleached, whereas the chemical leaching resulted in a value of 3.4%. Leaching efficiency of tin was 90.2% on the 14th day of the experiment for the biological system (9K) and 93.4% on 21st day of control leaching.
Źródło:
Physicochemical Problems of Mineral Processing; 2018, 54, 3; 639-645
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of H2O2 and O3 on PGM Extraction from Used Car Catalysts
Autorzy:
Fornalczyk, A.
Willner, J.
Gajda, B.
Sedlakova-Kadukova, J.
Powiązania:
https://bibliotekanauki.pl/articles/356376.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
spent catalytic converters
PGM metals
hydrometallurgy
O3
H2O2
Opis:
Catalytic converters contain the catalytic substance in their structure, which is a mixture of Platinum Group Metals (PGMs). The prices of these metals and a growing demand for them in the market, make it necessary to recycle spent catalytic converters and recovery of PGMs. In the study, the effect of ozone and hydrogen peroxide application on the possibility of extracting PGM from used car catalysts was investigated. The catalytic carrier was milled, sieved and then the fractions with the desired grain size were treated with the appropriate HCl mixture and 3%, 5%, 10%, 15% and 30% H2O2, respectively, and the tests were also carried out at temperature 333 K. Ozone tests were conducted with the O3 flow in the range of 1,3,5 g/h. Samples for analysis were collected after 30 min, 1 h, 2 h, 3 h and after 4 h, respectively. The residue after the experiments and filtration process was also analysed. The obtained results confirmed the assumption that PGMs can be extracted using hydrochloric acid with the addition of H2O2 or ozone as oxidants. It allows to significantly intensify the carried out reactions and to improve the rate of PGMs transfer to the solution.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 2; 963-968
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Role of Oxidizing Agents in Leaching Process of Electronic Waste
Autorzy:
Lisińska, M.
Saternus, M.
Willner, J.
Fornalczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/352176.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ozone
leaching process
electronic waste
metals recovery
Opis:
New technologies and the globalization of the electrical and electronic equipment market cause a continuous increase in the amount of electrical and electronic waste. They constitute one of the waste groups that grows the fastest in quantity. The development of the new generation of electrical and electronic devices is much faster than before. Recently attention has been concentrated on hydrometallurgical methods for the recovery of metals from electronic waste. In this article the role of an oxidizing agent, mainly ozone and hydrogen peroxide was presented in hydrometallurgical processes. Leaching process of printed circuits boards (PCBs) from used cell phones was conducted. The experiments were carried out in the presence of sulfuric acid and ozone as an oxidizing agent for various temperatures, acid concentration, ozone concentration. As a result, the concentrations of copper, zinc, iron and aluminum in the obtained solution were measured. The obtained results were compared to results obtained earlier in the presence of hydrogen peroxide as an oxidizing agent and discussed.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 2; 969-974
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Closing the Loop: Key Role of Iron in Metal-Bearing Waste Recycling
Autorzy:
Sedlakova-Kadukova, J.
Marcincakova, R.
Mrazikova, A.
Willner, J.
Fornalczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/351340.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
bioleaching
e-waste
acidophilic bacteria
iron
Opis:
The role of iron in metal-bearing waste bioleaching was studied. Four various types of waste (printed circuit boards (PCBs), Ni-Cd batteries, alkaline batteries and Li-ion batteries) were treated by bioleaching using the acidophilic bacteria A. ferrooxidans and A. thiooxidans (separately or in mixture). Role of main leaching agents (Fe3+ ions or sulphuric acid) was simulated in abiotic experiments. Results showed that oxidation abilities of Fe3+ ions were crucial for recovery of Cu and Zn from PCBs, with the efficiencies of 88% and 100%, respectively. To recover 68% of Ni from PCBs, and 55% and 100% of Ni and Cd, respectively, from Ni-Cd batteries both oxidation action and hydrolysis of Fe3+ were required. The importance of Fe2+ ions as a reducing agent was showed in bioleaching of Co from Li-ion batteries and Mn from alkaline batteries. The efficiency of the processes has increased by 70% and 40% in Co and Mn bioleaching, respectively, in the presence of Fe2+ ions. Based on the results we suggest the integrated biometallurgical model of metal-bearing waste recycling in the effort to develop zero-waste and less energy-dependent technologies.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 3; 1459-1466
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Control over the Biological Synthesis of Ag Nanoparticles by Selection of the Specific Algal Species
Autorzy:
Sedlakova-Kadukova, J.
Velgosova, O.
Vosatka, M.
Lukavsky, J.
Dodd, J.
Willner, J.
Fornalczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/354443.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
nanoparticles
silver
algae
Parachlorella kessleri
Dictyosphaerium chlorelloides
Desmodesmus quadricauda
Opis:
The application of green synthesis in the nano-science and technology is of great importance in the area of the preparation of various materials. In this work, three selected algal species Parachlorella kessleri, Dictyosphaerium chlorelloides and Desmodesmus quadricauda were successfully used for the preparation of silver nanoparticles (AgNPs). Presence of AgNPs was confirmed by UV-vis spectroscopy and transmission electron microscopy. AgNPs produced by P. kessleri had narrow size distribution and average sizes of 7.6 nm. However, nanoparticle production lasted for long time. Nanoparticle formation by D. chlorelloides was the fastest, although, their average sizes were 23.4 nm with broad size distribution. Nanoparticles produced by D. quadricauda had average sizes 23.9 nm but they were the least stable, aggregated and precipitated from solutions within 3 days. These results confirmed that the size distribution and mean diameter of the nanoparticles, crucial for various applications, can be controlled by the organism selection.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 3; 1439-1442
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dissolution of Metal Supported Spent Auto Catalysts in Acids
Autorzy:
Fornalczyk, A.
Kraszewski, M.
Willner, J.
Kaduková, J.
Mrážiková, A.
Marcinčáková, R.
Velgosová, O.
Powiązania:
https://bibliotekanauki.pl/articles/353228.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
dissolution
metal supported auto catalysts
metal substrate
Opis:
Metal supported auto catalysts, have been used in sports and racing cars initially, but nowadays their application systematically increases. In Metal Substrate (supported) Converters (MSC), catalytic functions are performed by the Platinum Group Metals (PGM): Pt, Pd, Rh, similarly to the catalysts on ceramic carriers. The contents of these metals make that spent catalytic converters are valuable source of precious metals. All over the world there are many methods for the metals recovery from the ceramic carriers, however, the issue of platinum recovery from metal supported catalysts has not been studied sufficiently yet. The paper presents preliminary results of dissolution of spent automotive catalyst on a metal carrier by means of acids: H2SO4, HCl, HNO3, H3PO4. The main assumption of the research was the dissolution of base metals (Fe, Cr, Al) from metallic carrier of catalyst, avoiding dissolution of PGMs. Dissolution was the most effective when concentrated hydrochloric acid, and 2M sulfuric acid (VI) was used. It was observed that the dust, remaining after leaching, contained platinum in the level of 0.8% and 0.7%, respectively.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 1; 233-236
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metoda punktowej oceny wartości użytkowej rozwiązań funkcjonalno-przestrzennych istniejących obiektów inwentarskich i jej wykorzystanie w kwalifikowaniu obiektów do modernizacji
The evaluation method of functional and spatial value of the existing livestock buildings for qualifying objects to modernization
Autorzy:
Fornalczyk, P.
Wisniewski, K.
Pawlat-Zawrzykraj, A.
Powiązania:
https://bibliotekanauki.pl/articles/886186.pdf
Data publikacji:
2016
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
obiekty inwentarskie
wartosc uzytkowa
ocena wartosci uzytkowej
modernizacja
ocena punktowa
budynki inwentarskie
obory
Opis:
Metoda punktowej oceny wartości użytkowej rozwiązań funkcjonalno-przestrzennych istniejących obiektów inwentarskich i jej wykorzystanie w kwalifikowaniu obiektów do modernizacji. W artykule przedstawiono metodę punktowej oceny wartości użytkowej rozwiązań funkcjonalno-przestrzennych na potrzeby określenia przydatności obiektów inwentarskich do modernizacji. Metoda uwzględnia kilka kryteriów oceny: stan techniczny obiektu, cechy przestrzenne, mikroklimat wnętrza, elastyczność modernizacyjną oraz ocenę obiektu jako elementu zespołu produkcyjnego. Metodę wykorzystano w ocenie obory krów mlecznych w gospodarstwie w Zduńskiej Dąbrowie. Uzyskane wyniki oceny potwierdziły, że modernizacja zamortyzowanych obiektów jest w pełni możliwa i opłacalna, oraz stały się podstawą do opracowania projektu modernizacji technologiczno-budowlanej obory w ramach dostosowania jej do obowiązujących standardów UE.
The evaluation method of functional and spatial value of the existing livestock buildings for qualifying objects to modernization. The paper presents the method of evaluation of technical, functional and spatial values of the farm buildings to determine suitability of livestock facilities to modernization. The method takes into account a number of evaluation criteria, such as: technical state of the building, spatial characteristics, interior microclimate, flexibility modernization and significance of the facility as a part of the production complex. The method was used for the evaluation of the cowshed located in Zduńska Dąbrowa. The evaluation results confirmed that the modernization of depreciated objects is fully possible and profitable. Therefore, the conclusions became the basis for a project of the cowshed’s modernization in order to adopt existing technology and construction to current EU standards.
Źródło:
Scientific Review Engineering and Environmental Sciences; 2016, 25, 1[71]
1732-9353
Pojawia się w:
Scientific Review Engineering and Environmental Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling Methods of Magnetohydrodynamic Phenomena Occurring in a Channel of the Device Used to Wash Out the Spent Automotive Catalyst by a Liquid Metal
Autorzy:
Fornalczyk, A.
Przylucki, R.
Golak, S.
Willner, J.
Powiązania:
https://bibliotekanauki.pl/articles/352154.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
magnetohydrodynamic
precious metals wash out
automotive spent catalyst
Opis:
The recovery of precious metals is necessary for environmental and economic reasons. Spent catalysts from automotive industry containing precious metals are very attractive recyclable material as the devices have to be periodically renovated and eventually replaced. This paper presents the method of removing platinum from the spent catalytic converters applying lead as a collector metal in a device used to wash out by using mangetohydrodynamic stirrer. The article includes the description of the methods used for modeling of magnetohydrodynamic phenomena (coupled analysis of the electromagnetic, temperature and flow fields) occurring in this particular device. The paper describes the general phenomena and ways of coupling the various physical fields for this type of calculation. The basic computational techniques with a discussion of their advantages and disadvantages are presented.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 2A; 713-718
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effect of Specific Conditions on Cu, Ni, Zn and Al Recovery from PCBS Waste Using Acidophilic Bacterial Strains
Autorzy:
Mrážiková, A.
Kaduková, J.
Marcinčáková, R.
Velgosová, O.
Willner, J.
Fornalczyk, A.
Saternus, M.
Powiązania:
https://bibliotekanauki.pl/articles/353402.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
bioleaching
metals
electronic waste
PCBs
Opis:
The objective of this work was to evaluate the influence of static, stirring and shaking conditions on copper, zinc, nickel and aluminium dissolution from printed circuit boards (PCBs) using the mixed acidophilic bacterial culture of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans. The results revealed that static conditions were the most effective in zinc and aluminium dissolution. Zinc was removed almost completely under static conditions, whereas maximum of nickel dissolution was reached under the stirring conditions. The highest copper recovery (36%) was reached under stirring conditions. The shaking conditions appeared to be the least suitable. The relative importance of these systems for the bioleaching of copper and nickel decreased in the order: stirring, static conditions, shaking.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 1; 261-264
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal Balance of the Magneto-Hydro-Dynamic Pump for Recovery of Platinum Group Metals from Spent Auto Catalysts
Autorzy:
Gil, S.
Bialik, W.
Saternus, M.
Fornalczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/356349.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
thermal balance
magneto-hydro-dynamic pump
platinum group metals
Opis:
Every new car should be equipped with the catalyst, which limits the amount of harmful chemical compounds such as NOx, CH and CO emitted to the air. Auto catalyst consists of the ceramic or metallic carrier, on which is the layer with Platinum Group Metals playing catalytic role. There are many methods using for recovery those valuable metals from spent auto catalyst, however evry of those methods have some limitations. Proces described in the article is the modified method of metal collector, which used magnetohydrodynamic pump. Rotary electromagnetic field generates in the liquid metal rotary current, which as a consequence washing out the PGM metals from the ceramic carriers. Considering the possibilities of commercialization of the described method, the energy balance was made. From that balance the energetic efficiency of the unit was determined and the analysis of the temperature distribution was shown thermographycally.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 1; 253-256
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dissolution of Ceramic Monolith of Spent Catalytic Converters by Using Hydrometallurgical Methods
Rozpuszczanie monolitu ceramicznego zużytych katalizatorów na drodze hydrometalurgicznej
Autorzy:
Willner, J.
Fornalczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/355165.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
spent catalytic converters
Polymeric Gradient Materials (PGMs)
hydrometallurgy
zużyte katalizatory
PGM
hydrometalurgia
Opis:
Catalytic converters contain the catalytic substance in their structure, which is a mixture of Platinum Group Metals (PGMs): platinum, palladium and rhodium. The prices of these metals and a growing demand for them in the market, make it necessary to recycle spent catalytic converters and recovery of PGMs. The ceramic monolith of catalytic converters is still a predominant material in its construction among of multitude of catalytic converters which are in circulation. In this work attempts were made to leach additional metals (excluding Pt) from comminuted ceramic monolith. Classic leachant oxidizing media 10M H2SO4, HCl and H3PO4 were used considering the possibility of dissolution of the ceramic monolith.
Katalizatory samochodowe w swojej strukturze zawierają substancję katalityczną, będącą mieszaniną platynowców: platyny, palladu i rodu. Ceny tych metali oraz rosnące zapotrzebowanie na nie, stanowią o konieczności recyklingu zużytych katalizatorów i odzysku z nich wspomnianych metali. Materiał ceramiczny, jako monolit katalizatora jest ciągle materiałem dominującym wśród katalizatorów dostępnych obecnie na rynku. W pracy podjęto próby rozpuszczenia ceramicznego monolitu z użyciem, jako czynnika ługującego klasycznych mediów utleniających 10M H2SO4, HCl i H3PO4.
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 4; 2948-2948
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Possibilities of Metals Extracton From Spent Metallic Automotive Catalytic Converters by Using Biometallurgical Method
Możliwości wykorzystania metod biometalurgicznych do ekstrakcji metali ze zużytych metalowych katalizatorów samochodowych
Autorzy:
Willner, J.
Kaduková, J.
Fornalczyk, A.
Mrážiková, A.
Marcinčáková, R.
Velgosová, O.
Powiązania:
https://bibliotekanauki.pl/articles/354688.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
spent catalytic converters
metallic carrier
biometallurgy
Acidithiobacillus bacteria
zużyte katalizatory
metalowe nośniki
biometalurgia
bakterie Acidithiobacillus
Opis:
he main task of automotive catalytic converters is reducing the amount of harmful components of exhaust gases. Metallic catalytic converters are an alternative to standard ceramic catalytic converters. Metallic carriers are usually made from FeCrAl steel, which is covered by a layer of Precious Group Metals (PGMs) acting as a catalyst. There are many methods used for recovery of platinum from ceramic carriers in the world, but the issue of platinum and other metals recovery from metallic carriers is poorly described. The article presents results of preliminary experiments of metals biooxidation (Fe, Cr and Al) from spent catalytic converters with metallic carrier, using bacteria of the Acidithiobacillus genus.
Głównym zadaniem katalizatorów samochodowych jest zmniejszenie ilości szkodliwych składników spalin. Katalizatory na nośniku metalowym są alternatywą dla standardowych katalizatorów na nośniku ceramicznym. Nośniki metalowe najczęściej wykonuje się ze stali FeCrAl, na którą nieniesiona jest warstwa platynowców, pełniących funkcje katalityczne. W pracy przedstawiono wyniki wstępnych prób bioutleniania metali ze zużytych katalizatorów na nośniku metalowym (Fe, Cr, Al.), z udziałem bakterii z rodzaju Acidithiobacillus.
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 3A; 1877-1880
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Single web camera robust interactive eye-gaze tracking method
Autorzy:
Wojciechowski, A.
Fornalczyk, K.
Powiązania:
https://bibliotekanauki.pl/articles/201647.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
eye-gaze tracking
computer vision
human-computer interaction
real-time tracking
wizja komputerowa
interakcja człowiek-komputer
śledzenie w czasie rzeczywistym
Opis:
Eye-gaze tracking is an aspect of human-computer interaction still growing in popularity,. Tracking human gaze point can help control user interfaces and may help evaluate graphical user interfaces. At the same time professional eye-trackers are very expensive and thus unavailable for most of user interface researchers and small companies. The paper presents very effective, low cost, computer vision based, interactive eye-gaze tracking method. On contrary to other authors results the method achieves very high precision (about 1.5 deg horizontally and 2.5 deg vertically) at 20 fps performance, exploiting a simple HD web camera with reasonable environment restrictions. The paper describes the algorithms used in the eye-gaze tracking method and results of experimental tests, both static absolute point of interest estimation, and dynamic functional gaze controlled cursor steering.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2015, 63, 4; 879-886
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
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