A Comparative Study of Angular Extrapolation in Sinogram and Stackgram Domains for Limited Angle Tomography. - Antti P. Happonen; Ulla Ruotsalainen (SCIA, 2005)

Decomposition of radon projections into stackgrams for filtering, extrapolation, and alignment of sinogram data. - Antti P. Happonen (2005)

Preliminary results on noise reduction using stackgrams for (low-dose) X-ray CT sinograms. - Antti P. Happonen; Matti O. Koskinen (EUSIPCO, 2007)

Assessment of automated scintigram alignment in the stackgram domain for cardiac stress-rest SPECT studies. - Antti P. Happonen; Matti O. Koskinen (Comput. Medical Imaging Graph., 2007)

Experimental Investigation of Angular Stackgram Filtering for Noise Reduction of SPECT Projection Data: Study with Linear and Nonlinear Filters. - Antti P. Happonen; Matti O. Koskinen (Int. J. Biomed. Imaging, 2007)

P4Well concept to empower self-management of psychophysiological wellbeing and load recovery. - Antti P. Happonen; Elina M. Mattila; Marja-Liisa Kinnunen; Veikko Ikonen; Tero Myllymaki; Kirsikka Kaipainen; Heikki Rusko; Raimo Lappalainen; Ilkka Korhonen (PervasiveHealth, 2009)

Elastic Neural Networks: A Scalable Framework for Embedded Computer Vision. - Yue Bai; Shuvra S. Bhattacharyya; Antti P. Happonen; Heikki Huttunen (EUSIPCO, 2018)

Embedded Implementation of a Deep Learning Smile Detector. - Pedram Ghazi; Antti P. Happonen; Jani Boutellier; Heikki Huttunen (EUVIP, 2018)