Search Results - "Kälviäinen, Heikki"

Segmentation of Overlapping Elliptical Objects in Silhouette Images by Zafari, Sahar, Eerola, Tuomas, Sampo, Jouni, Kalviainen, Heikki, Haario, Heikki

“…Segmentation of partially overlapping objects with a known shape is needed in an increasing amount of various machine vision applications. This paper presents…”
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SealID: Saimaa Ringed Seal Re-Identification Dataset by Nepovinnykh, Ekaterina, Eerola, Tuomas, Biard, Vincent, Mutka, Piia, Niemi, Marja, Kunnasranta, Mervi, Kälviäinen, Heikki

“…Wildlife camera traps and crowd-sourced image material provide novel possibilities to monitor endangered animal species. The massive data volumes call for…”
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Species-Agnostic Patterned Animal Re-identification by Aggregating Deep Local Features by Nepovinnykh, Ekaterina, Chelak, Ilia, Eerola, Tuomas, Immonen, Veikka, Kälviäinen, Heikki, Kholiavchenko, Maksim, Stewart, Charles V.

“…Access to large image volumes through camera traps and crowdsourcing provides novel possibilities for animal monitoring and conservation. It calls for…”
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Joint facial expression recognition and intensity estimation based on weighted votes of image sequences by Kamarol, Siti Khairuni Amalina, Jaward, Mohamed Hisham, Kälviäinen, Heikki, Parkkinen, Jussi, Parthiban, Rajendran

“…•A framework for joint facial expression recognition and intensity estimation from image sequences is proposed.•A feature representation based on weighted…”
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Comparison of bubble detectors and size distribution estimators by Ilonen, Jarmo, Juránek, Roman, Eerola, Tuomas, Lensu, Lasse, Dubská, Markéta, Zemčík, Pavel, Kälviäinen, Heikki

“…•We review the different approaches to detect bubbles from noisy images.•We review methods to estimate the bubble size distribution.•We compare five methods…”
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Resolving overlapping convex objects in silhouette images by concavity analysis and Gaussian process by Zafari, Sahar, Murashkina, Mariia, Eerola, Tuomas, Sampo, Jouni, Kälviäinen, Heikki, Haario, Heikki

“…This paper introduces a novel method for segmentation of clustered partially overlapping convex objects in silhouette images. The proposed method involves…”
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Survey of automatic plankton image recognition: challenges, existing solutions and future perspectives by Eerola, Tuomas, Batrakhanov, Daniel, Barazandeh, Nastaran Vatankhah, Kraft, Kaisa, Haraguchi, Lumi, Lensu, Lasse, Suikkanen, Sanna, Seppälä, Jukka, Tamminen, Timo, Kälviäinen, Heikki

“…Planktonic organisms including phyto-, zoo-, and mixoplankton are key components of aquatic ecosystems and respond quickly to changes in the environment,…”
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Modelling internal knot distribution using external log features by Zolotarev, Fedor, Eerola, Tuomas, Lensu, Lasse, Kälviäinen, Heikki, Helin, Tapio, Haario, Heikki, Kauppi, Tomi, Heikkinen, Jere

“…•We propose a method to model internal knot locations based on laser scans of logs.•The method is faster and cheaper than methods using computer tomography…”
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Determination of single droplet sizes, velocities and concentrations with image analysis for reactive extraction of copper by Tamminen, Jussi, Lahdenperä, Esko, Koiranen, Tuomas, Kuronen, Toni, Eerola, Tuomas, Lensu, Lasse, Kälviäinen, Heikki

“…•Single organic droplet copper extraction was measured using funnel and imaging.•Droplet inner concentrations were determined from analysis of video…”
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Toward phytoplankton parasite detection using autoencoders by Bilik, Simon, Batrakhanov, Daniel, Eerola, Tuomas, Haraguchi, Lumi, Kraft, Kaisa, Van den Wyngaert, Silke, Kangas, Jonna, Sjöqvist, Conny, Madsen, Karin, Lensu, Lasse, Kälviäinen, Heikki, Horak, Karel

“…Phytoplankton parasites are largely understudied microbial components with a potentially significant ecological influence on phytoplankton bloom dynamics. To…”
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Feature representation and discrimination based on Gaussian mixture model probability densities—Practices and algorithms by Paalanen, Pekka, Kamarainen, Joni-Kristian, Ilonen, Jarmo, Kälviäinen, Heikki

“…This study promotes the use of statistical methods in specific classification tasks since statistical methods have certain advantages which advocate their use…”
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Automatic individual identification of Saimaa ringed seals by Tina Chehrsimin, Tuomas Eerola, Meeri Koivuniemi, Miina Auttila, Riikka Levänen, Marja Niemi, Mervi Kunnasranta, Heikki Kälviäinen

“…In order to monitor an animal population and to track individual animals in a non‐invasive way, identification of individual animals based on certain…”
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Detection of bubbles as concentric circular arrangements by Strokina, Nataliya, Matas, Jiri, Eerola, Tuomas, Lensu, Lasse, Kälviäinen, Heikki

“…The paper proposes a method for the detection of bubble-like transparent objects in a liquid. The detection problem is non-trivial since bubble appearance…”
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Towards operational phytoplankton recognition with automated high-throughput imaging, near-real-time data processing, and convolutional neural networks by Kraft, Kaisa, Velhonoja, Otso, Eerola, Tuomas, Suikkanen, Sanna, Tamminen, Timo, Haraguchi, Lumi, Ylöstalo, Pasi, Kielosto, Sami, Johansson, Milla, Lensu, Lasse, Kälviäinen, Heikki, Haario, Heikki, Seppälä, Jukka

“…Plankton communities form the basis of aquatic ecosystems and elucidating their role in increasingly important environmental issues is a persistent research…”
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Unsupervised object discovery via self-organisation by Kinnunen, Teemu, Kamarainen, Joni-Kristian, Lensu, Lasse, Kälviäinen, Heikki

“…► We study the new and challenging problem of unsupervised visual object categorisation. ► We propose the self-organising map principle as a novel solution to…”
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Framework for developing image-based dirt particle classifiers for dry pulp sheets by Strokina, Nataliya, Mankki, Aki, Eerola, Tuomas, Lensu, Lasse, Käyhkö, Jari, Kälviäinen, Heikki

“…One important aspect of assessing the quality in pulp and papermaking is dirt particle counting and classification. Knowing the number and types of dirt…”
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Constructing Benchmark Databases and Protocols for Medical Image Analysis : Diabetic Retinopathy by Kauppi, Tomi, Kämäräinen, Joni-Kristian, Lensu, Lasse, Kalesnykiene, Valentina, Sorri, Iiris, Uusitalo, Hannu, Kälviäinen, Heikki

“…We address the performance evaluation practices for developing medical image analysis methods, in particular, how to establish and share databases of medical…”
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Bayesian network model of overall print quality: Construction and structural optimisation by Eerola, Tuomas, Lensu, Lasse, Kamarainen, Joni-Kristian, Leisti, Tuomas, Ritala, Risto, Nyman, Göte, Kälviäinen, Heikki

“…►We propose a model for representing and quantifying the visual quality of prints. ►A Bayesian network is used to connect objective metrics to visual quality…”
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Complementing visual tracking of moving targets by fusion of tactile sensing by Alkkiomäki, Olli, Kyrki, Ville, Kälviäinen, Heikki, Liu, Yong, Handroos, Heikki

“…Robot control in uncertain and dynamic environments can be greatly improved using sensor-based control. Vision is a versatile low-cost sensory modality, but…”
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Visual measurement and tracking in laser hybrid welding by Fennander, Henri, Kyrki, Ville, Fellman, Anna, Salminen, Antti, Kälviäinen, Heikki

“…This paper presents a novel system for the automatic analysis of a hybrid welding process. High-speed imaging and laser illumination are used to measure the…”
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