Timo Ojala

Vassilis Kostakos, Hannu Kukka, Jorge Gonçalves, Nikolaos K. Tselios, Timo Ojala: Multipurpose Public Displays: How Shortcut Menus Affect Usage. IEEE Computer Graphics and Applications 33(2): 56-63 (2013)

Vassilis Kostakos, Timo Ojala: Public Displays Invade Urban Spaces. IEEE Pervasive Computing 12(1): 8-13 (2013)

Hannu Kukka, Vassilis Kostakos, Timo Ojala, Johanna Ylipulli, Tiina Suopajärvi, Marko Jurmu, Simo Hosio: This is not classified: everyday information seeking and encountering in smart urban spaces. Personal and Ubiquitous Computing 17(1): 15-27 (2013)

Hannu Kukka, Heidi Oja, Vassilis Kostakos, Jorge Gonçalves, Timo Ojala: What makes you click: exploring visual signals to entice interaction on public displays. CHI 2013: 1699-1708

Timo Ojala, Vassilis Kostakos, Hannu Kukka, Tommi Heikkinen, Tomas Lindén, Marko Jurmu, Simo Hosio, Fabio Kruger, Daniele Zanni: Multipurpose Interactive Public Displays in the Wild: Three Years Later. IEEE Computer 45(5): 42-49 (2012)

Timo Ojala, Joonas Kokkoniemi, Jarkko Luukkonen, Toni Hakanen, Ossi Salmi, Paavo Pokkinen: Reflecting QoS of low-cost multi-provider municipal WiFi on commercial 3.G mobile data and ISM spectrum occupancy. MOBIWAC 2012: 37-44

Jouko Kaasila, Denzil Ferreira, Vassilis Kostakos, Timo Ojala: Testdroid: automated remote UI testing on Android. MUM 2012: 28

Timo Ojala, Fabio Kruger, Vassilis Kostakos, Ville Valkama: Two field trials on the efficiency of unsolicited Bluetooth proximity marketing. MUM 2012: 38

Jiehan Zhou, Teemu Leppänen, Meirong Liu, Erkki Harjula, Timo Ojala, Mika Ylianttila, Chen Yu: Sensor Information Representation for the Internet of Things. OTM Workshops 2012: 515-524

Tomas Lindén, Tommi Heikkinen, Vassilis Kostakos, Denzil Ferreira, Timo Ojala: Towards multi-application public interactive displays. PerDis 2012: 9

Simo Hosio, Vassilis Kostakos, Hannu Kukka, Marko Jurmu, Jukka Riekki, Timo Ojala: From School Food to Skate Parks in a Few Clicks: Using Public Displays to Bootstrap Civic Engagement of the Young. Pervasive 2012: 425-442

Felipe J. Gil-Castiñeira, Enrique Costa-Montenegro, Francisco J. González-Castaño, Cristina López-Bravo, Timo Ojala, Raja Bose: Experiences inside the Ubiquitous Oulu Smart City. IEEE Computer 44(6): 48-55 (2011)

Timo Ojala, Jukka Orajärvi, Katriina Puhakka, Ilari Heikkinen, Juhani Heikka: panOULU: triple helix driven municipal wireless network providing open and free internet access. C&T 2011: 118-127

Timo Ojala, Pauli Närhi, Teemu Leppänen, Jani Ylioja, Szymon Sasin, Zach Shelby: UBI-AMI: Real-Time Metering of Energy Consumption at Homes Using Multi-Hop IP-based Wireless Sensor Networks. GPC 2011: 274-284

Hannu Kukka, Fabio Kruger, Vassilis Kostakos, Timo Ojala, Marko Jurmu: Information to Go: Exploring In-Situ Information Pick-Up "In the Wild". INTERACT (2) 2011: 487-504

Ville Valkama, Timo Ojala: Stakeholder value propositions on open community testbed of interactive public displays. MEDES 2011: 107-113

Timo Ojala, Vassilis Kostakos: UBI challenge: research coopetition on real-world urban computing. MUM 2011: 205-208

Tommi Heikkinen, Tomas Lindén, Marko Jurmu, Hannu Kukka, Timo Ojala: Declarative XML-based layout state encoding for managing screen real estate of interactive public displays. PerCom Workshops 2011: 82-87

Timo Ojala: Case studies on context-aware mobile multimedia services. JDIM 8(1): 4-15 (2010)

Juha Tiensyrjä, Timo Ojala, Toni Hakanen, Ossi Salmi: panOULU conqueror: pervasive location-aware multiplayer game for city-wide wireless network. Fun and Games 2010: 157-165

Timo Ojala, Jukka Riekki: UBI challenge workshop 2010: real world urban computing. UbiComp (Adjunct Papers) 2010: 535-538

Timo Ojala, Ville Valkama, Hannu Kukka, Tommi Heikkinen, Tomas Lindén, Marko Jurmu, Fabio Kruger, Simo Hosio: UBI-hotspots: sustainable ecosystem infrastructure for real world urban computing research and business. MEDES 2010: 196-202

Tommi Heikkinen, Tomas Lindén, Timo Ojala, Hannu Kukka, Marko Jurmu, Simo Hosio: Lessons Learned from the Deployment and Maintenance of UBI-Hotspots. MUE 2010: 1-6

Simo Hosio, Hannu Kukka, Marko Jurmu, Timo Ojala, Jukka Riekki: Enhancing interactive public displays with social networking services. MUM 2010: 23

Timo Ojala, Hannu Kukka, Tommi Heikkinen, Tomas Lindén, Marko Jurmu, Fabio Kruger, Szymon Sasin, Simo Hosio, Pauli Närhi: Open Urban Computing Testbed. TRIDENTCOM 2010: 457-468

Simo Hosio, Marko Jurmu, Hannu Kukka, Jukka Riekki, Timo Ojala: Supporting distributed private and public user interfaces in urban environments. HotMobile 2010: 25-30

Tomas Lindén, Tommi Heikkinen, Timo Ojala, Hannu Kukka, Marko Jurmu: Web-based framework for spatiotemporal screen real estate management of interactive public displays. WWW 2010: 1277-1280

Mika Rautiainen, Hannu Aska, Timo Ojala, Matti Hosio, Aki Mäkivirta, Niko Haatainen: Swarm synchronization for multi-recipient multimedia streaming. ICME 2009: 786-789

Hannu Kukka, Rodolfo Patino, Timo Ojala: Ubirockmachine: A community-driven music distribution and consumption system for shared urban spaces. ICME 2009: 1789-1792

Hannu Kukka, Fabio Kruger, Timo Ojala: BlueInfo: Open Architecture for Deploying Web Services in WPAN Hotspots. ICWS 2009: 984-991

Hannu Kukka, Rodolfo Patino, Timo Ojala: UbiRockMachine: a multimodal music voting service for shared urban spaces. MUM 2009

Jani Kenttälä, Joachim Viide, Timo Ojala, Pekka Pietikäinen, Mikko Hiltunen, Jyrki Huhta, Mikko Kenttälä, Ossi Salmi, Toni Hakanen: Clarified Recorder and Analyzer for Visual Drill Down Network Analysis. PAM 2009: 122-125

Timo Ojala, Toni Hakanen, Ossi Salmi, Mikko Kenttälä, Juha Tiensyrjä: Supporting Session and Access Point Mobility in a Large Multi-provider Multi-vendor Municipal WiFi Network. AccessNets 2008: 89-101

Jürgen Scheible, Timo Ojala, Paul Coulton: MobiToss: a novel gesture based interface for creating and sharing mobile multimedia art on large public displays. ACM Multimedia 2008: 957-960

Hannu Kukka, Timo Ojala, Juha Tiensyrjä, Teemu Mikkonen: panOULU Luotsi: a location based information mash-up with XML aggregator and WiFi positioning. MUM 2008: 80-83

Jani Korhonen, Timo Ojala, Annu Ristola, Manne Kesti, Vesa Kilpelänaho, Mikko Koskinen, Eveliina Viippola: Mobile Fair Diary: hybrid interface for taking, browsing and sharing context-aware notes. Personal and Ubiquitous Computing 11(7): 577-589 (2007)

Jürgen Scheible, Ville H. Tuulos, Timo Ojala: Story Mashup: design and evaluation of novel interactive storytelling game for mobile and web users. MUM 2007: 139-148

Timo Ojala (Ed.): Proceedings of the 6th International Conference on Mobile and Ubiquitous Multimedia, MUM 2007, Oulu, Finland, December 12-14, 2007. ACM International Conference Proceeding Series 284, ACM 2007, isbn 978-1-59593-916-6

Jani Korhonen, Timo Ojala, Mikko Klemola, Pasi Vaananen: mTag - Architecture for Discovering Location Specific Mobile Web Services Using RFID and Its Evaluation with Two Case Studies. AICT/ICIW 2006: 191

Mika Rautiainen, Tapio Seppänen, Timo Ojala: Advancing Content-Based Retrieval Effectiveness with Cluster-Temporal Browsing in Multilingual Video Databases. ICME 2006: 377-380

Mika Rautiainen, Tapio Seppänen, Timo Ojala: On the significance of cluster-temporal browsing for generic video retrieval: a statistical analysis. ACM Multimedia 2006: 125-128

Jialin Liu, Mika Rautiainen, Timo Ojala: Sensitivity evaluation of SNoW and SVM based face detection methods. MMM 2006

Tommi Halonen, Timo Ojala: Cross-layer design for providing service oriented architecture in a mobile Ad Hoc network. MUM 2006: 11

Tiia Sutinen, Timo Ojala: Case Study in Assessing Subjective QoS of a Mobile Multimedia Web Service in a Real Multi-access Network. IWQoS 2005: 298-312

Jürgen Scheible, Timo Ojala: MobiLenin combining a multi-track music video, personal mobile phones and a public display into multi-user interactive entertainment. ACM Multimedia 2005: 199-208

Janne Lukkari, Jani Korhonen, Timo Ojala: SmartRestaurant: mobile payments in context-aware environment. ICEC 2004: 575-582

Timo Ojala, Markus Koskela, Esa Matinmikko, Mika Rautiainen, Jorma Laaksonen, Erkki Oja: Task-Based User Evaluation of Content-Based Image Database Browsing Systems. CIVR 2004: 234-242

Mika Rautiainen, Timo Ojala, Tapio Seppänen: Cluster-temporal browsing of large news video databases. ICME 2004: 751-754

Markus Aittola, Pekka Parhi, Maria Vieruaho, Timo Ojala: Comparison of Mobile and Fixed Use of SmartLibrary. Mobile HCI 2004: 383-387

Mika Rautiainen, Timo Ojala, Tapio Seppänen: Analysing the performance of visual, concept and text features in content-based video retrieval. Multimedia Information Retrieval 2004: 197-204

Lauri Aalto, Nicklas Göthlin, Jani Korhonen, Timo Ojala: Bluetooth and WAP Push Based Location-Aware Mobile Advertising System. MobiSys 2004

Timo Ojala, Jani Korhonen, Tiia Sutinen, Pekka Parhi, Lauri Aalto: Mobile kärpät: a case study in wireless personal area networking. MUM 2004: 149-156

Jaakko Peltonen, Mark Ollila, Timo Ojala: TimeMachine Oulu - Dynamic Creation of Cultural-Spatio-Temporal Models as a Mobile Service. Mobile HCI 2003: 342-346

Markus Aittola, Tapio Ryhänen, Timo Ojala: SmartLibrary - Location-Aware Mobile Library Service. Mobile HCI 2003: 411-416

Timo Ojala, Matti Pietikäinen, Topi Mäenpää: Multiresolution Gray-Scale and Rotation Invariant Texture Classification with Local Binary Patterns. IEEE Trans. Pattern Anal. Mach. Intell. 24(7): 971-987 (2002)

Timo Ojala, Topi Mäenpää, Matti Pietikäinen, Jaakko Viertola, Juha Kyllönen, Sami Huovinen: Outex- New Framework for Empirical Evaluation of Texture Analysis Algorithms. ICPR (1) 2002: 701-706

Timo Ojala, Markus Aittola, Esa Matinmikko: Empirical Evaluation of MPEG-7 XM Color Descriptors in Content-Based Retrieval of Semantic Image Categories. ICPR (2) 2002: 1021-1024

Mika Rautiainen, Dmitri Vorobiev, Kai Noponen, Pertti Alvar Väyrynen, Matti Hosio, Esa Matinmikko, Timo Ojala, Tapio Seppänen, Jani Penttilä, Satu-Marja Mäkelä, Johannes Peltola: TREC 2002 Video Track Experiments at MediaTeam Oulu and VTT. TREC 2002

Timo Ojala, Kimmo Valkealahti, Erkki Oja, Matti Pietikäinen: Texture discrimination with multidimensional distributions of signed gray-level differences. Pattern Recognition 34(3): 727-739 (2001)

Timo Ojala, Matti Pietikäinen, Topi Mäenpää: A Generalized Local Binary Pattern Operator for Multiresolution Gray Scale and Rotation Invariant Texture Classification. ICAPR 2001: 397-406

Matti Pietikäinen, Timo Ojala, Zelin Xu: Rotation-invariant texture classification using feature distributions. Pattern Recognition 33(1): 43-52 (2000)

Timo Ojala, Matti Pietikäinen, Topi Mäenpää: Gray Scale and Rotation Invariant Texture Classification with Local Binary Patterns. ECCV (1) 2000: 404-420

Topi Mäenpää, Timo Ojala, Matti Pietikäinen, Maricor Soriano: Robust Texture Classification by Subsets of Local Binary Patterns. ICPR 2000: 3947-3950

Topi Mäenpää, Matti Pietikäinen, Timo Ojala: Texture Classification by Multi-Predicate Local Binary Pattern Operators. ICPR 2000: 3951-3954

Mika Rautiainen, Timo Ojala, Hannu Kauniskangas: Detecting Perceptual Color Changes from Sequential Images for Scene Surveillance. MVA 2000: 136-139

Timo Ojala, Matti Pietikäinen: Unsupervised texture segmentation using feature distributions. Pattern Recognition 32(3): 477-486 (1999)

Timo Ojala, Matti Pietikäinen: Unsupervised Texture Segmentation Using Feature Distributions. ICIAP (1) 1997: 311-318

Timo Ojala, Matti Pietikäinen, Jarkko Nisula: Determining Composition of Grain Mixtures by Texture Classification Based on Feature Distributions. IJPRAI 10(1): 73-82 (1996)

Timo Ojala, Matti Pietikäinen, David Harwood: A comparative study of texture measures with classification based on featured distributions. Pattern Recognition 29(1): 51-59 (1996)

David Harwood, Timo Ojala, Matti Pietikäinen, Shalom Kelman, Larry S. Davis: Texture classification by center-symmetric auto-correlation, using Kullback discrimination of distributions. Pattern Recognition Letters 16(1): 1-10 (1995)