Publications of Visual cognition research group.
2021
- Virtanen, T., Nuutinen, M. & Häkkinen, J. (2021) Language of preferential judgment in photographs. Psychology of Aesthetics, Creativity, and the Arts, In Press.
2019
- Virtanen, T., Nuutinen, M. & Häkkinen, J. (2019) The image quality wheel. Journal of Electronic Imaging 28(1) 013015.
- Lehmuskallio, A., Hӓkkinen, J., & Seppӓnen, J. (2019) Photorealistic computer-generated images are difficult to distinguish from digital photographs: a case study with professional photographers and photo-editors. Visual Communication, 1470357218759809.
2018
- Häkkinen, J., Ohta, F. & Kawai, T. (2018) Time course of sickness symptoms with HMD viewing of 360-degree videos. Journal of Imaging Science and Technology 62(6) 60403-1-60403-11. [Received the IS&T 2019 Charles E. Ives Journal Award for the best article of the year]
- Mustonen, T., Nuutinen, M., Vainio, L., & Häkkinen, J. (2018). Upper nasal hemifield location and nonspatial auditory tones accelerate visual detection during dichoptic viewing. PloS one, 13(7), e0199962.
- Leisti, T. & Häkkinen, J. (2018) Learning to decide with and without reasoning: How changes in information acquisition and information integration affect preference stability. Journal of Behavioral Decision Making 31(3) 367-379.
- Toivanen, M., Puolamäki, K., Lukander, K., Häkkinen, J. & Radun, J. (2016) Inferring user action with mobile gaze tracking. Proceedings of the 18th International Conference on Human-Computer Interaction with Mobile Devices and Services, 1026-108.
2017
- Nuutinen, M., Mustonen, T. & Häkkinen, J. (2017) CFS MATLAB toolbox: An experiment builder for continuous flash suppression (CFS) task. Behavior Research Methods, 1-10. https://doi.org/10.3758/s13428-017-0961-z
- Lyubanenko, V., Kuronen, T., Eerola, T., Lensu, L., Kälviäinen, H. & Häkkinen, J. (2017) Multi-camera Finger Tracking and 3D Trajectory Reconstruction for HCI Studies. Proceedings of Advanced Concepts for Intelligent Vision Systems: 18th International Conference, ACIVS 2017, Antwerp, Belgium, September 18-21, 2017.
2016
- Häkkinen, J. & Gröhn, L. (2016) Turning water into rock: The inverted waves effect. i-Perception 7(1) 1-6.
- Radun, J. Nuutinen, M. Leisti, T. & Häkkinen, J. (2016) Individual differences in image quality estimations: estimation rules and viewing strategies. ACM Transactions on Applied Perception 13(3), Article 14.
- Nuutinen, M., Virtanen, T. & Häkkinen, J. (2016) New performance measure of image and video quality assessment algorithms: Subjective-root-mean-square-error (SRMSE). Journal of Electronic Imaging, 25(2) 023012.
- Leisti, T. & Häkkinen, J. (2016) The effect of introspection on judgment and decision making is dependent on the quality of conscious thinking. Consciousness and Cognition 42, 340–351.
- Nuutinen, M., Virtanen, T., Vaahteranoksa, M., Vuori, T. & Häkkinen, J. (2016) CVD2014 - A database for evaluating no-reference video quality assessment algorithms. IEEE Transactions on Image Processing 25(7) 3073 – 3086.
- Hakala, K., Kätsyri, J., Takala, T. & Häkkinen, J. (2016); Perception of stereoscopic direct gaze: The effects of interaxial distance and emotional facial expressions. Journal of Vision 2016;16(9):5.
2015
- Hakala, J. & Häkkinen, J. (2015) Interlacing causes depth artefacts in stereoscopic displays. Transactions on Applied Perception 12(1) Article 3.
- Nuutinen, M., Virtanen, T., Rummukainen, O. & Häkkinen, J. (2015) VQone MATLAB toolbox: A graphical experimental builder for image and video quality evaluations. Behavior Research Methods, January 2015. DOI 10.3758/s13428-014-0555-y
- Mustonen, T., Kimmel, J., Hakala, J. & Häkkinen, J. (2015) Visual performance with curved small displays: Effects of radius curvature and eccentricity on visual search with convex and concave surfaces. Human Factors 57(6) 1029-1050.
- Hakala, J., Kätsyri, J. & Häkkinen, J. (2015) Stereoscopy amplifies emotions elicited by facial expressions. i-Perception 6(6) 1-17.
- Virtanen, T., Nuutinen, M., Radun, J., Leisti, T., & Häkkinen, J. (2015) Alternative performance and metrics target values for the CID2013 database. Image Quality and System Performance XII: Proceedings of the IS&T/SPIE’s International Symposium on Electronic Imaging 2015, 10-12 February, San Francisco, California, USA
- Kuronen, T., Eerola, T., Lensu, L., Takatalo, J., Häkkinen, J. & Kälviäinen, H. (2015) High-Speed Hand Tracking for Studying Human-Computer Interaction. Lecture Notes in Computer Science Volume 9127, 2015, 130-141.
2014
- Nuutinen, M., Virtanen, T., Leisti, T., Mustonen, T., Radun, J. & Häkkinen, J. (2014) A new method for evaluating the subjective image quality of photographs: Dynamic Reference. Multimedia Tools and Ap-plications, December 2014. DOI: 10.1007/s11042-014-2410-7.
- Hakala, J., Oittinen, P. & Häkkinen, J. (2014) Depth artifacts caused by spatial interlacing in stereoscopic 3D displays. Transactions on Applied Perception.
- Nuutinen, M., Virtanen, T., Rummukainen, O. & Häkkinen, J. (2014) VQone MATLAB toolbox: A graphical experiment builder for image and video quality evaluations. Behavior Research Methods.
- Nuutinen, M., Virtanen, T. & Oittinen, P. (2014) Image feature subsets for predicting the quality of consumer camera images and identifying quality dimensions. Journal of Electronic Imaging, 23(6), 061111. doi:10.1117/1.JEI.23.6.061111
- Virtanen, T., Nuutinen, M., Vaahteranoksa, M., Oittinen, P. & Häkkinen, J. (2014) CID2013: a database for evaluating no-reference image quality assessment algorithms. IEEE Transactions on Image Processing. In Press.
- Radun, J., Leisti, T., Virtanen, T., Nyman, G., & Häkkinen, J. (2014). Why is quality estimation judgment fast? Comparison of gaze control strategies in quality and difference estimation tasks. Journal of Electronic Imaging, 23(6), 061103. doi:10.1117/1.JEI.23.6.061103
- Leisti T., Radun J., Virtanen, T., Nyman G., Häkkinen J. (2014) Explaining can enhance visual decision making. Acta Psychologica 145, Pages 65–74.
- Hakala, J., Westman, S., Salmimaa, M., Pölönen, M., Järvenpää, T. & Häkkinen, J. (2014) Why 3D cameras are not popular: A qualitative user study on stereoscopic photography acceptance. 3D Research, 3D Research 5:4.
- Kawai, T., Atusta, D., Tomiyama, Y., Kim, S., Morikawa, H., Mitsuya, R. & Häkkinen, J. (2014) Disparity modifications and the emotional effects of stereoscopic images. Proceedings of IS&T/SPIE's International Symposium on Electronic Imaging 2014, Stereoscopic Displays and Applications XXV, 901115.
- Salmimaa, M., Hakala, J., Pölönen, M., Järvenpää, T., Bilcu, R. & Häkkinen, J. (2014) Luminance asymmetry in stereoscopic content: Binocular rivalry or luster. Display Week 2014 International Symposium, Seminar and Exhibition, June 1-6, 2014, California, San Diego Convention Center.
- Sassi, A., Pöyhönen, P., Jakonen, S., Suomi, S., Capin, T. & Häkkinen, J. (2014) Enhanced user performance in image gallery application with mobile autostereoscopic touch display. Displays, Displays 35, 152-158.
- Rummukainen, O., Radun, J., Virtanen, T., & Pulkki, V. (2014). Categorization of natural dynamic audiovisual scenes. PloS one, 9(5), e95848. doi:10.1371/journal.pone.0095848
- Kawai, T., Atusta, D., Tomiyama, Y., Kim, S., Morikawa, H., Mitsuya, R. & Häkkinen, J. (2014) Disparity modifications and the emotional effects of stereoscopic images. Proceedings of IS&T/SPIE's International Symposium on Electronic Imaging 2014, Stereoscopic Displays and Applications XXV, 901115.
- Salmimaa, M., Hakala, J., Pölönen, M., Järvenpää, T., Bilcu, R. & Häkkinen, J. (2014) Luminance asymmetry in stereoscopic content: Binocular rivalry or luster. SID Symposium Digest of Technical Papers, 801-804.
- Takatalo, J. & Häkkinen, J. (2014) Predicting the metascore with a subjective user experience data. Proceedings of the first ACM SIGCHI Annual Symposium on Computer-Human Interaction in Play (CHI PLAY '14), pp. 441-442. doi: 10.1145/2658537.2661299.
- Takatalo, J. & Häkkinen, J. (2014) Profiling user experience in digital games with the flow model. Proceedings of the 8th Nordic Conference on Human-Computer Interaction (NordiCHI '14), 353-356. doi:10.1145/2639189.2639486.
2013
- Kawai, T., Hirahara, M., Tomiyama, Y., Atsuta, D. & Häkkinen, J. (2013) Disparity analysis of 3D movies and emotional representations. Proceedings of SPIE Vol. 8648, Stereoscopic Displays and Applications XXIV, 86480Z (March 12, 2013); doi:10.1117/12.2008582.
- Kim, S., Morikawa, H., Mitsuya, R., Kawai, T., Häkkinen, J. (2013) Binocular disparity and emotional evaluation of horror in S3D content The Japanese Journal of Ergonomics 49: S424-S427.
- Kytö, M., Mäkinen, A., Häkkinen, J., Oittinen, P. (2013) Using auxiliary augmentations for reducing ordinal and relative depth judgment errors in non-photorealistic augmented reality. ACM Transactions on Applied Perception 10(1) Article 6.
- Muukkonen, H., Kosonen, K., Marttiin, P., Vesikivi, P., Kaistinen, J., & Nyman, G. (2013). Pedagogical design for knowledge creating inquiry in customer projects. Knowledge Management & E-Learning, 5(3), 278–297.
- Nuutinen, M., Virtanen, T., Valkonen, V., & Oittinen, P. (2013) Automatic exposure and white balance control in video cameras: Time course characterization and preference. Proceedings of the 8th International Symposium on Image and Signal Processing and Analysis 2013, p. 25–29.
- Pei, L. , Guinness, R. , Chen, R. , Liu, J. , Kuusniemi, H. , Chen, Y. , Chen, L. & Kaistinen, J. (2013) Human Behavior Cognition Using Smartphone Sensors. Sensors 13(2), 1402-1424.
- Takala, T., Hämäläinen, P., Matveinen, M., Simonen, T. & Takatalo, J. (2013) Enhancing Spatial Perception and User Experience in Video Games with Volumetric Shadows. Proceedings of OzCHI 2013. In Press.
- Takatalo, J., Miller, D. & Häkkinen, J. (2013) Experience, Engagement and Shikake. Proceedings of AAAI 2013 Spring Symposium Series: Shikakeology, March 25.–27. 2013, Stanford, CA, USA.
2012
- Kytö, M., Hakala, J., Oittinen, P. & Häkkinen, J. (2012) Defining Camera Separation for Stereoscopic Mobile Phones. Journal of Electronic Imaging, 21(1) 011011.
- Nuutinen, M., Orenius, O., Säämänen, T., Oittinen, P. (2012) A Framework for Measuring Sharpness in Natural Images Captured by Digital Cameras Based on Reference Image and Local Areas. EURASIP Journal on Image and Video Processing, 2012(8).
- Nuutinen, M., Virtanen, T., Oittinen, P. (2012) Features for predicting quality of images captured by digital cameras. Proc of IEEE International Symposium on Multimedia. p. 165-168.
- Pölönen, M., Hakala, J., Bilcu, R., Järvenpää, T., Häkkinen, J. & Salmimaa, M. (2012) Color Asymmetry in 3D Imaging: Influence on Viewing Experience. Journal of 3D Research 3(3) Article 5.
- Pölönen, M., Järvenpää, T. & Häkkinen, J. (2012) Reading e-books on a near-to-eye display: comparison between a small-sized multimedia display and a hard copy. Displays 33(3) 157-167.
- Pölönen, M., Salmimaa, M., Takatalo, J. & Häkkinen, J. (2012) Subjective Experiences of Watching Stereoscopic Avatar and U2 3D in a Cinema. Journal of Electronic Imaging 21(1) 011006-1 - 011006-8.
- Radun, J., Leisti, T., Virtanen, T., & Nyman, G. (2012). How do we watch images?: a case of change detection and quality estimation. in: Image Quality and System Performance IX (Proceedings Volume): proceedings of the IS&T/SPIE's International Symposium on Electronic Imagining 2012, 23-26 January 2012, Burlingame, California USA/ Eds. Frans Gaykema and Peter Burns - RECEIVED THE BEST STUDENT PAPER AWARD OF THE CONFERENCE
2011
- Eerola, T., Lensu, L., Kamarainen, J., Leisti, T., Ritala, R., Nyman, G. & Kalviainen, H. (2011) Bayesian network model of overall print quality: Construction and structural optimisation. Pattern Recognition Letters 32, 11, p. 1558-1566.
- Kawai, T., Häkkinen, J., Oshima, K., Saito, H., Yamazoe, T., Morikawa, H., Nyman, G. (2011) Psychophysiological effects of head-mounted displays in ubiquitous use. Multimedia on Mobile Devices 2011 and Multimedia Content Access: Algorithms and Systems V, Ed. D. Akopian, SPIE Vol 7881, 1-12.
- Nuutinen, M., Orenius, O., Säämänen, T., Oittinen, P. (2011) Potential of face area data for predicting sharpness of natural images. Proc. of SPIE/IS&T Electronic Imaging 2011, Image Quality and System Performance VIII. San Francisco, California, USA, 23.-27.1.2011, [7876-36].
- Nuutinen, M., Orenius, O., Säämänen, T., Oittinen, P. (2011) Reference image method for measuring quality of photographs produced by digital cameras. Proc. of SPIE/IS&T Electronic Imaging 2011, Image Quality and System Performance VIII. San Francisco, California, USA, 23.-27.1.2011. [7876-22].
- Nyman, G. (2011) Suomen Akatemian rooli olisi syytä uudistaa. Helsingin Sanomat 7.4.2011.
- Takatalo, J., Häkkinen, J., Kaistinen, J. & Nyman, G. (2011) User Experience in Digital Games: Differences Between Laboratory and Home. Simulation & Gaming 42(5) 657-674.
- Takatalo, J., Häkkinen, J., Kaistinen, J. & Nyman, G. (2011) User experience in stereoscopic 3D games. Media Psychology 14(4) 387-414.
- Pölönen, M., Salmimaa, M. & Häkkinen, J. (2011) Effect of ambient illumination level to perceived autostereoscopic display quality and depth perception. Displays 32(3) 135-141.
- Takatalo, J. (2011) Psychologically-based and content-oriented experience in entertainment virtual environments Helsinki. Studies in Psychology / Helsingin yliopiston psykologian laitoksen tutkimuksia: 77, 98 p. Doctoral Thesis.
2010
- Radun, J., Leisti, T., Virtanen, T., Häkkinen, J., Vuori, T. & Nyman, G. (2010) Evaluating the Multivariate Visual Quality Performance of Image-Processing Components. ACM transactions on applied perception 7, 3, p. 16.
- Takatalo, J., Häkkinen, J., Kaistinen, J. & Nyman, G. (2010) Evaluating user experience in digital games: a psychological approach. Journal of digital games research 4, 1, p. 21-35.
- Nyman, G., Häkkinen, J., Koivisto, E-M., Leisti, T., Lindroos, P., Orenius, O., Virtanen, T., Vuori, T. (2010) Evaluation of the visual performance of image processing pipes: information value of subjective image attributes. IS&T/SPIE's International Symposium on Electronic Imaging: Science and Technology, Image Quality and System Performance XXI, 18-22 January 2010, San Jose California, USA.
- Eerola, T., Lensu, L., Kälviäinen, H., Kämäräinen, J., Leisti, T., Nyman, G., Halonen, R. & Oittinen, P. (2010) Printed Image Quality: Measurement Framework and Statistical Evaluation. Journal of Imaging Science and Technology 54, 1, p. 1-13.
- Halonen, R., Nuutinen, M., Oittinen, P., Leisti, T., Nyman, G., Mettänen, M., Ritala, R., Eerola, T., Lensu, L., Kämäräinen, J. & Kälviäinen, H. (2010) Fusion of Digital and Visual Print Quality: Final Report of DigiQ Project. Helsinki, 108 p. Graphic arts in Finland: 3.
- Nyman, G., Kaistinen, J., Takatalo, J. & Häkkinen, J. (2010) Innovation Journalists, Null-Hypothesis, and the Forgotten H0 Heroes. Innovation journalism 7, 8, p. 1-13.
- Muukkonen, H., Lakkala, M., Kaistinen, J. & Nyman, G. (2010) Knowledge Creating Inquiry In a Distributed Project-Management Course. Research and Practice in Technology Enhanced Learning 5, 2, p. 73-96.
- Takatalo, J., Häkkinen, J., Lehtonen, M., Kaistinen, J. & Nyman, G. (2010) Presence, involvement, and flow in digital games. In Bernhaupt, R. (Ed.) Evaluating User Experience in Games: Concepts and Methods. London: Springer, p. 23-46.
- Häkkinen, J., Aaltonen, V., Schrader, M., Nyman, G., Lehtonen, M. & Takatalo, J. (2010) Qualitative analysis of mediated communication experience. IEEE QoMEX 2010, p. 147-151.
- Kishi, S., Kim, S., Shibata, T., Kawai, T., Häkkinen, J., Takatalo, J. & Nyman, G. (2010) Scalable 3D image conversion of stereoscopic images for safety and comfort (Japanese). Journal of The Institute of Image Information and Television Engineers 64, 12, p. 1912-1920.
- Säämänen, T., Virtanen, T. & Nyman, G. (2010) Videospace: Classification of video through shooting context information. Proc. SPIE 7529, 752906 (2010); doi:10.1117/12.839414.
- Häkkinen, J., Kawai, T., Takatalo, J., Mitsuya, R. & Nyman, G. (2010) What do people look at when they watch stereoscopic movies? Electronic Imaging: Stereoscopic Displays & Applications XXI Conference. Proceedings of SPIE, Vol. 7524, 10 p.
- Nuutinen, M., Orenius, O., Säämänen, T., Oittinen, P. (2010) A Reduced-reference Method for Characterizing Color Noise in Natural Images Captured by Digital Cameras. Proc. Of. IS&T/SID 18th Color and Imaging Conference, San Antonio, Texas, USA 8.-12.11.2010, pp. 80-85.
- Nuutinen, M., Halonen, R., Leisti, T. & Oittinen, P. (2010) Reduced-reference quality metrics for measuring the image quality of digitally printed natural images. Proc. SPIE 7529, 75290I (2010); doi:10.1117/12.838883.
- Pölönen, M., Järvenpää, T. & Häkkinen, J. (2010) Comparison of near-to-eye displays: subjective experience and comfort. Journal of Display Technology, Vol. 6, pp. 27-35
2009
- Aaltonen, VK., Takatalo, J., Häkkinen, J., Lehtonen, M., Nyman, G., & Schrader, M. (2009) Measuring mediated communication experience. First International Workshop on Quality of Multimedia Experience (QoMEX 2009), 29.-31.7.2009, San Diego, California, U.S.A.
- Häkkinen, J., Kilpeläinen, M., Salmimaa, M., Takatalo, J. & Nyman, G. (2009) Image quality with stereoscopic contents: Determining the limits to avoid double images. Journal of the Society for Information Display 17 (5), 433-441.
- Leisti, T., Radun, J., & Nyman, G. (2009). Subjective quality of print. In Oittinen, P., & Saarelma, H. (Eds.), Papermaking science and technology. Book 13: Print media: Principles, processes and quality (2nd ed., totally updated version), p. 336-354. Helsinki: Papers Engineers' Association/Paperi ja Puu oy.
- Leisti, T., Radun, J., Virtanen, T., Halonen, R., & Nyman, G. (2009) Subjective experience of image quality: attributes, definitions, and decision making of subjective image quality. In Farnand, S. P., & Gaykema, F. (Eds.): Image Quality and System Performance VI (Proceedings Volume): Proceedings of the IS&T/SPIE's International Symposium on Electronic Imagining 2009, 19 January 2009, San Jose, California USA: Volume 7242.
- Pölönen, M. & Häkkinen, J. (2009) Near-to-Eye Display—An Accessory for Handheld Multimedia Devices: Subjective Studies. Journal of Display Technology, Vol. 5, No. 9, September 2009. DOI 10.1109/JDT.2009.2025056.
- Pölönen, M, Järvenpää, T. & Häkkinen, J. (2009) Comparison of Near-to-Eye Displays: Subjective Experience and Comfort. Journal of Display Technology. DOI 10.1109/JDT.2009.2029123.
- Pölönen, M., Salmimaa, M., Aaltonen, V.-K., Häkkinen, J. & Takatalo, J. (2009) Subjective measures of presence and discomfort in viewers of color-separation-based stereoscopic cinema. Journal of the Society for Information Display 17(5), 459-466.
- Pölönen, M., Järvenpää, T. & Häkkinen, J. (2010) Comparison of near-to-eye displays: subjective experience and comfort. Journal of Display Technology, Vol. 6, pp. 27-35
- Pölönen, M. & Häkkinen, J. (2009) Near-to-eye display – an accessory for handheld multimedia devices: subjective studies. Journal of Display Technology 5(9) 358-367
- Salmimaa, M., Häkkinen, J., Liinasuo, M. & Järvenpää, T. (2009) Effect of number of views to the viewing experience with autostereoscopic 3D displays. Journal of the Society for Information Display 17(5) 449-458
- Shibata, T., Kurihara, S., Kawai, T, Takahashi, T., Shimizu, T., Kawada, R., Ito, A., Häkkinen, J., Takatalo, J. & Nyman, G. (2009) Evaluation of stereoscopic image quality for mobile devices using interpretation based quality methodology. IS&T/SPIE's International Symposium on Electronic Imaging: Science and Technology, Stereoscopic Displays and Applications XX, 18-22 January 2009, San Jose California, USA.
- Särkelä, H., Takatalo, J., May, P., Laakso, M. & Nyman, G. (2009) Movement patterns and the experiential components of virtual environments. International Journal of Human-Computer Studies 67 (9), 787-799.
- Takatalo, J., Häkkinen, J., Kaistinen, J., & Nyman, G. (2009) Experiencing multimodal environments. Experiencing light 2009 conference, 26.-28.10.2009, Eindhoven, The Netherlands.
2008
- Häkkinen, J., Kawai, T., Takatalo, J., Leisti, T., Radun, J., Hirsaho, A. & Nyman, G. (2008) Measuring stereoscopic image quality experience with interpretation based quality methodology. Proceedings of the IS&T/SPIE's International Symposium on Electronic Imaging 2008: Imaging Quality and System Performance V, 27-31 January 2008, San Jose Convention Center, San Jose, California USA.
- Häkkinen, J., Pölönen, M., Salmimaa, M. & Hautanen, J. (2008) Reading experience with curved hand-held displays. Journal of the SID Society for Information Display, 16/11.
- Jumisko-Pyykkö, S. & Häkkinen, J. (2008) The effect of age and technology experience on subjective mobile video quality. Proceedings of the IS&T/SPIE's International Symposium on Electronic Imaging 2008: Multimedia on Mobile Devices III, 27-31 January 2008, San Jose Convention Center, San Jose, California USA.
- Leisti, T., Halonen, R., Kokkonen, A., Weckman, H., Mettänen, M., Lensu, L., Ritala, R., Oittinen, P. & Nyman, G. (2008) Process perspective on image quality evaluation. In Image Quality and System Performance V: Image Quality Evaluation Concepts, pp. 68080P Proceedings of SPIE, vol. 6808.
- Miettinen, I., Näsänen, R. & Häkkinen, J. (2008) Effects of saccade length and target luminance on the refresh frequency threshold for the visibility of colour break-up. IEEE Journal of Display Technology 4(1) 81-85.
- Mizobuchi, S., Terasaki, S., Bergquist, J., Häkkinen, J., Heinonen, E. & Chignell, M. (2008) The effect of stereoscopic viewing in a word-search task with a layered background. Journal of the Society for Information Display 16(11) 1105-1113.
- Pölönen, M., Aaltonen, V., Nyman, G. & Häkkinen, J. (2008) Influence of the monocular near-to-eye display position on the visual system during dual-task performance. Journal of the Society for Information Display 16(11) 1083-1087.
- Virtanen, T., Radun, J., Lindroos, P., Suomi, S., Säämänen, T., Vuori, T., Vaahteranoksa, M., & Nyman, G. (2008) Forming valid scales for subjective video quality measurement based on a hybrid qualitative/quantitative methodology. In Farnand, S. P. & Gaykema, F. (Eds.): Image Quality and System Performance V (Proceedings Volume): Proceedings of the IS&T/SPIE's International Symposium on Electronic Imagining 2008, 27-31 January 2008, San Jose, California USA: Volume 6808.
2007
- Havukumpu, J., Häkkinen, J., Grönroos, E., Vähäkangas, P & Nyman, G. (2007) Comparing Two Head-Mounted Displays in Ultrasound Scanning. In: Jacko, J. (Ed.) Human-Computer Interaction, Part II, HCII 2007, LNCS 4551, p. 597–604. Springer-Verlag Berlin Heidelberg.
- Niinikuru, R., Kojo, I., Häkkinen, J. (2007) Miten katseen kohdistamisen aikaiset pienet silmänliikkeet vaikuttavat havaitsemiseen? Psykologia 42, 4-13. (“How do the small eye movements during fixation affect perception”).
- Radun J., Virtanen T., Olives J-L., Vaahteranoksa M., Vuori T., Nyman G. (2007) Audiovisual Quality Estimation of Mobile Phone Video Cameras with Intrepretation-Based Quality Approach. In Proceedings of Electronic Imaging Science and Technology 6494, San Jose, USA. Jan. 2007 649403-1 – 649403-11.
- Takatalo, J., Häkkinen, J., Kaistinen, J. & Nyman, G. (2007) Measuring user experience in digital gaming: Theoretical and methodological issues. Proceedings of the IS&T/SPIE Symposium on Electronic Imaging, 28.1. - 1.2. 2007, San Jose, California USA. 1-13.
2006
- Havukumpu, J., Vähäkangas, P., Grönroos, E. & Häkkinen, J. (2006) Midwives experiences of us-ing HMD in ultrasound scan. Proceedings of the 4th Nordic conference on Human-computer interaction: changing roles. ACM International Conference Proceeding Series; Vol. 189, 369-372.
- Häkkinen, J., Liinasuo, M., Takatalo, J. & Nyman, G. (2006) Visual comfort with stereoscopic mobile gaming. Proceedings of the IS&T/SPIE's International Symposium on Electronic Imaging 2006: Stereoscopic Displays and Applications XVII, vol. 6055. Andrew J. Woods, Neil A. Dodgson, John O. Merritt, Mark T. Bolas, Ian E. McDowall, Editors, 60550A. DOI 10.1117/12.641210.
- Häkkinen, J., Takatalo, J., Pölönen, M. & Nyman, G. (2006) Simulator sickness in virtual display gaming: A comparison of stereoscopic and non-stereoscopic situations. Proceedings of the 8th conference on Human-computer interaction with mobile devices and services MobileHCI '06, 12-15th September, Espoo, Finland. ACM International Conference Proceeding Series, Vol. 159, pp. 227-229.
- Jumisko-Pyykkö, S. & Häkkinen, J. (2006) “I would like to see the face and at least hear the voice”: Effects of screen size and audio-video bitrate ratio on perception of quality in mobile television. 4th European Interactive TV Conference, 25-26 May 2006, Athens, Greece.
- Kojo, I., Häkkinen, J. & Simola, J. (2006) Captured waterfall: Depth capture in a natural setting. Perception 35 (5), 717-718.
- Lehtonen J., Andriyashin, A., Parkkinen, J., Leisti, T., Nyman, G. (2006) Functions of image. Proceedings of the SPIE: Intelligent robots and computer vision XXIV: Algorithms, techniques, and active vision, Vol 6384, 3-4 October 2006, Boston, Massachusetts, USA.
- Nyman, G., Radun, J., Leisti, T., Oja, J., Ojanen, H., Olives, J.-L., Vuori, T. & Häkkinen, J. (2006) What do users really perceive – probing the subjective image quality experience. Proceedings of the IS&T/SPIE's International Symposium on Electronic Imaging 2006: Imaging Quality and System Performance III, Vol. 6059, 15-19 January 2006, San Jose Convention Center, San Jose, California USA, pp. 1-7.
- Radun J., Virtanen T., Nyman G., Olives J-L. (2006) Explaining multivariate image quality – Interpretation-Based Quality Approach. In Proceedings of ICIS ’06, Rochester, NY, USA, May 2006, International Congress of Imaging Science, 119-121.
- Takatalo, J., Häkkinen, J., Komulainen, J., Särkelä, H. & Nyman, G. (2006) The impact of the display type and content to a game adaptation. Proceedings of the Eight International Conference on Human-Computer Interaction With Mobile Devices and Services, September 12-15, Otaniemi, Finland, 17-20.
- Takatalo, J., Häkkinen J., Komulainen, J., Särkelä, H., & Nyman, G. (2006) Involvement and presence in digital gaming. Proceedings of the Fourth Nordic Conference on Human-Computer Interaction, October 14-18, Oslo, Norway, 393-396.
- Takatalo, J., Häkkinen, J., Kaistinen, J., Komulainen, J., Särkelä, J. & Nyman, G. (2006) Adaptation into a game: Involvement and presence in four different PC-games. Proceedings of the FuturePlay 2006: The International Academic Conference on the Future of Game Design and Technology, October 10-12, London, Ontario, Canada.
2005
- Havukumpu, J., Nyman, G., Takatalo, J. & Häkkinen, J. (2005) Attention and simulator sickness with a see-through head-mounted display. Proceedings of the 11th International Conference on Human-Computer Interaction, 22-27 July, Las Vegas, Nevada, USA. NV: Mira Digital.
- Häkkinen, J., Takatalo, J., Komulainen, J., Särkelä, H., Havukumpu, J. & Nyman, G. (2005) Simulator sickness symptoms in virtual display gaming. Proceedings of the 12th International Display Workshops (IDW '05), December 6-9, 2005, Sunport Takamatsu, Takamatsu, Japan, pp. 1825-1828.
- Jumisko-Pyykkö, S. & Häkkinen, J. (2005) Evaluation of subjective video quality on mobile devices. Proceedings of the 13th ACM International Conference on Multimedia 6-12 November, 2005, Singapore, pp. 535-538.
- Nyman G., Radun J., Leisti T. & Vuori T. (2005) From image fidelity to subjective quality: a hybrid qualitative/quantitative methodology for measuring subjective image quality for different image contents. In Proceedings of the 12th International Display Workshops (IDW '05), December 6-9, 2005, Sunport Takamatsu, Takamatsu, Japan, pp. 1817–1820.
- Pölönen, M., Häkkinen, J. & Laarni, J. (2005) Reading short lines. Proceedings of the 11th International Conference on Human-Computer Interaction, 22-27 July, Las Vegas, Nevada, USA. NV: Mira Digital.
2004
- Häkkinen, J. (2004) A virtual display for mobile use. Society for Information Display 2004 International Symposium, Seminar and Exhibition. May 23-28, 2004 Washington State Convention Center, Seattle, Washington USA. Society for Information Display 2004 International Symposium Digest of Technical Papers, Vol. XXXV, Book II, pp. 1586-1589.
- Häkkinen, J., Takatalo, J., Havukumpu, J., Komulainen, J., Särkelä, H. & Nyman, G. (2004) Simulator sickness symptoms caused by a visual search task in a monocular virtual display. Proceedings of the 11th International Display Workshops (IDW '04) December 8-10, 2004, Niigata Convention Center, Toki Messe, Niigata, Japan, pp. 1511-1513.
- Liinasuo, M., Kojo, I., Häkkinen, J. & Rovamo, J. (2004) Visual completion of three-dimensional, chromatic, moving stimuli in humans. Neuroscience Letters 354(1-2), 18-21.
- Mustonen, T., Olkkonen, M., Häkkinen, J. (2004) Examining mobile phone text legibility while walking. ACM Conference on Human Factors in Computing Systems (CHI 2004), April 24-29, Vienna, Austria. Extended abstracts, pp. 1243–1246.
- Pölönen, M., Häkkinen, J. & Laarni, J. (2004) Does eye tracking provide a window to the soul of mobile phone users? Proceedings of the 11th International Display Workshops (IDW '04) December 8-10, 2004, Niigata Convention Center, Toki Messe, Niigata, Japan, pp. 1519-1522.
- Särkelä, H., Takatalo, J., Komulainen, J., Nyman, G. & Häkkinen, J. (2004) Attitudes to a new technology and experiential dimensions of two different digital games. Proceedings of the Third Nordic Conference on Human-Computer Interaction, October 23-27, Tampere, Finland, 349-352.
- Takatalo, J., Häkkinen, J., Särkelä, H, Komulainen, J. & Nyman, G. (2004) The experiential dimensions of two different digital games. Proceedings of the PRESENCE 2004-7th Annual International Workshop on Presence October 12-15, Valencia, Spain, 274-278.
- Takatalo, J., Häkkinen, J., Särkelä, H, Komulainen, J. & Nyman, G. (2004) A Psychological profile of game play. Advance –Nokia research magazine. No. 3.
- Vuori, T., Olkkonen, M., Pölönen, M., Siren, A. & Häkkinen, J. (2004) Can eye movements be quantitatively applied in image quality studies? NordiCHI2004, Proceedings of the Third Nordic Conference on Human-Computer Interaction, October 23-27, Tampere, Finland, pp. 335-338.
1995-2003
- Häkkinen, J. (2002) Using interocular apparent movement to measure head-mounted display misalignment. The 22nd International Display Research Conference, October 2-4, Nice, France, pp. 811-814.
- Häkkinen, J., Vuori, T. & Puhakka, M. (2002) Simulator sickness and postural sway after HMD use. IEEE International Conference on Systems, Man and Cybernetics. Yasmine Hammamet, Tunis, October 6 – 9, 2002, 147-152.
- Mustonen, T., Törn, L. & Häkkinen, J. (2002) The effect of character size and contrast on performance in pseudo-text and letter search tasks. Society for Information Display, 2002 International Symposium Digest of Technical Papers, Volume XXXIII, Number 1, 240-243.
- Häkkinen, J. & Nyman, G. (2001) Phantom surface captures stereopsis. Vision Research, 41, 187-199.
- Liinasuo, M., Kojo, I., Häkkinen, J. & Rovamo, J. (2000) Neon colour spreading in three-dimensional illusory objects in humans. Neuroscience Letters 281 (2-3), 119-122.
- Häkkinen, J., Liinasuo, M., Kojo, I. & Nyman, G. (1998) Three-dimensionally slanted illusory contours capture stereopsis. Vision Research 38(20), 3109-3115.
- Häkkinen, J. & Nyman, G. (1998) Ihmisen kolmiulotteisen stereohavaitsemisen mekanismit. Psykologia 33(4-5), 293-310. (The processes of human stereoscopic perception).
- Häkkinen, J. & Nyman, G. (1997) Occlusion constraints and stereoscopic slant. Perception 26(1), 29-38.
- Nyman, G. & Häkkinen, J. (1997) Dimension reduction, local intelligence and three-dimensional perception. In Pylkkänen, P., Pylkkö, P. & Hautamäki, A. (Eds.) Brain, mind and physics. IOS Press, Amsterdam.
- Häkkinen, J. & Nyman, G. (1996) Depth asymmetry in da Vinci stereopsis. Vision Research 36(23), 3815-3819.
- Laarni, J. & Häkkinen, J. (1994) Temporal properties of color and shape priming. Perception 23, 1395-1408.
- Nyman, G. & Häkkinen, J. (1995) On the Illusion of Three-Dimensionality of the World. In Pylkkänen, P. & Pylkkö, P. (Eds.) New Directions in Cognitive Science. Proceedings of the International Symposium, Saariselkä 4-9 August 1995, Lapland, Finland, pp. 266-272. Publications of the Finnish Artificial Intelligence Society, Helsinki.