We study photo-induced static and dynamic spectral changes in self-assembled CdSe=ZnS quantum dot (QD) thin films with varying QD concentrations under ambient conditions. Using spatially resolved scanning photoluminescence microscopy in conjunction with spectrally resolved time-correlated photon counting, we measure the variations in spectral intensity, emission wavelength, and recombination li...

We address the problem of extending the field of view of a photo— an operation we call uncrop. Given a reference photograph to be uncropped, our approach selects, reprojects, and composites a subset of Internet imagery taken near the reference into a larger image around the reference using the underlying scene geometry. The proposed Markov Random Field based approach is capable of handling larg...

This paper presents novel methods to handle potential occlusion problems and to render realistically the lighting of embedded virtual 3D objects in photo-based 3D worlds. These 3D worlds are called 3D Photo Collections. The first focus of this work handles potential occlusion problems between image parts of photos and the embedded virtual objects by dividing photos into 3D segments, which we ca...

For a lot of tasks concerning architecturally valuable buildings photogrammetric methods have shown to be best suited to obtain the geometrical basis. Using photogrammetry, a three-dimensional photo-realistical model ("Photo-Model") can be produced based on digital images taken from a building. A photo-model is a three-dimensional surface-model of a real object with texture information taken fr...

Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Amandeep Dhir Name of the doctoral dissertation Exploring Online Self-presentation in Computer-mediated environments: Motives and Reasons for Photo-tagging and untagging Publisher School of Science Unit Department of Computer Science Series Aalto University publication series DOCTORAL DISSERTATIONS 79/2016 Field of research Us...