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Kai Ojala

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20012019

Research output per year

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Research Output

2019

3D Display directional backlight based on diffractive elements

Mäkinen, J-T. & Ojala, K., 21 Nov 2019, Patent No. WO2019221993 A1, 8 May 2019, Priority date 17 May 2018

Research output: PatentPatent application

Light field image engine method and apparatus for generating projected 3D light fields

Mäkinen, J-T. & Ojala, K., 28 Feb 2019, Patent No. WO2019040484 A1, 21 Aug 2018

Research output: PatentPatent application

Method and system for aperture expansion in light field displays

Ojala, K. & Mäkinen, J-T., 9 May 2019, IPC No. G02B 27/00 , G02B 27/22 , H04N 13/305 , H04N 13/363 , Patent No. WO2019089283 A1, 23 Oct 2018, Priority date 2 Nov 2017, Priority No. 62/580,797

Research output: PatentPatent application

Multifocal optics for light field displays

Ojala, K. & Mäkinen, J-T., 29 Aug 2019, IPC No. H04N 13/307 , G02B 27/22, G02B 27/00 , G02B 27/01 , Patent No. WO2019164745 A1, 14 Feb 2019, Priority date 20 Feb 2018, Priority No. 62/633,047

Research output: PatentPatent application

2018

Method and apparatus for measuring the height of a surface

Ojala, K., 6 Sep 2018, IPC No. G01B 11/24, G01B11/06, G02B13/22, G02B27/42, Patent No. US2018252516 A, 6 Sep 2018, Priority date 22 Sep 2015, Priority No. FI20150005675 20150922

Research output: PatentPatent application

Systems and methods for 3d displays with flexible optical layers

Mäkinen, J-T., Ojala, K. & Metzger, J., 1 Nov 2018, IPC No. G02B 27/22, G02B 27/10, H04N 13/315, H04N 13/32 , Patent No. WO2018200417A1, 23 Apr 2018, Priority date 24 Apr 2017, Priority No. 62/489,393

Research output: PatentPatent application

2017

HULDA: Human detection around vehicles

Mäyrä, A., Vaarala, T., Aikio, M., Eskola, M., Guerre, R., Kämäräinen, J., Ojala, K., Mitikka, R. & Vasama, H., 2017, Towards a new era in manufacturing: Final report of VTT's For Industry spearhead programme. VTT Technical Research Centre of Finland, p. 93-97 (VTT Technology, Vol. 288).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access
2016

Crystallization monitoring using simultaneous bright field and PlasDIC imaging

El Arnaout, T., Kurki, L., Vaarala, T., Ojala, K., Cullen, P. J. & Sullivan, C., 2016, In : Chemical Engineering Journal. 300, p. 64-74

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)
2015

Fisheye optics for omnidirectional stereo camera - Performance evaluation for AGV applications

Mäyrä, A., Aikio, M., Ojala, K., Mandici, S., Vatavu, A. & Nedevschi, S., 2 Nov 2015, Intelligent Computer Communication and Processing (ICCP), 2015 IEEE International Conference on. IEEE Institute of Electrical and Electronic Engineers , p. 225-230

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

3 Citations (Scopus)
2012

Multi- and hyperspectral UAV imaging system for forest and agriculture applications

Mäkynen, J., Holmlund, C., Saari, H., Ojala, K. & Antila, T., 2012, Proceedings of SPIE 8374: Next-Generation Spectroscopic Technologies V. Druy, M. A. & Crocombe, R. A. (eds.). International Society for Optics and Photonics SPIE, 837409. (Proceedings of SPIE, Vol. 8374).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

15 Citations (Scopus)

Optical sensors and algorithms for life-sign detection in usar-operations

Mäyrä, A., Känsälä, K., Ojala, K., Aitta, P., Hietavalkama, T., Fernandez, F., Hildebrand, L. & Bussion, J., 2012, OSAV'2012: 3rd International Topical Meeting on Optical Sensing and Artificial Vision. Gurov, I. (ed.). American Institute of Physics AIP, Vol. 1537. p. 41-46 (AIP Conference Proceedings, Vol. 1537).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2011

Optical sensors for urban search and rescue operations

Mäyrä, A., Agapiou, A., Hildebrand, L., Ojala, K., Mikedi, K. & Statheropoulos, M., 2011, Electro-Optical and Infrared Systems: Technology and Applications VIII. Huckridge, D. A. (ed.). International Society for Optics and Photonics SPIE, 8 p. 81850F. (Proceedings of SPIE, Vol. 8185).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

3 Citations (Scopus)

UAV operated Hyperspectral Imager for forest and agriculture applications

Mäkynen, J., Holmlund, C., Saari, H., Ojala, K., Toivanen, H. & Antila, T., 2011, Proceedings of Finnish Remote Sensing Days 2011.

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Open Access

Unmanned Aerial Vehicle (UAV) operated imaging system for forest and agriculture applications

Saari, H., Antila, T., Holmlund, C., Mäkynen, J., Ojala, K., Toivanen, H., Pellikka, I., Tuominen, S., Pesonen, L. & Heikkilä, J., 2011, Proceedings of Finnish Remote Sensing Days 2011.

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Open Access

Unmanned aerial vehicle (UAV) operated megapixel spectral camera

Mäkynen, J., Holmlund, C., Saari, H., Ojala, K. & Antila, T., 2011, Electro-Optical Remote Sensing, Photonic Technologies, and Applications V. Bishop, G. J. (ed.). International Society for Optics and Photonics SPIE, 9 p. 81860Y. (Proceedings of SPIE, Vol. 8186).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

43 Citations (Scopus)

Unmanned Aerial Vehicle (UAV) operated spectral camera system for forest and agriculture applications

Saari, H., Pellikka, I., Pesonen, L., Tuominen, S., Heikkilä, J., Holmlund, C., Mäkynen, J., Ojala, K. & Antila, T., 2011, Proceedings of the SPIE: Remote Sensing for Agriculture, Ecosystems, and Hydrology XIII. International Society for Optics and Photonics SPIE, 15 p. 81740H. (Proceedings of SPIE, Vol. 8174).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

79 Citations (Scopus)

Unmanned Aerial Vehicle (UAV) operated spectral camera system for forest and agriculture applications

Saari, H., Antila, T., Holmlund, C., Mäkynen, J., Ojala, K., Toivanen, H., Pellikka, I., Tuominen, S., Pesonen, L. & Heikkilä, J., 2011, Optics Days 2011: Book of abstracts. University of Oulu

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Open Access
2001

IPSE: image processing simulation environment

Aikio, J., Kataja, K., Tukkiniemi, K., Karppinen, M., Mäkinen, J-T., Putila, V-P., Keränen, K., Ojala, K., Karioja, P. & Kolehmainen, T., 2001, Proceedings of the Finnish Optics Days 2001. 41

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific