Sommaren går nu mot sitt slut, precis som sommarjobbet. Om tre veckor flyger jag till Hong kong för att börja året utomlands genom Chalmers utbytesprogram. För någon dag sen fick jag mitt studentvisum och klartecken för boendet. Flygbiljetten är klar sedan maj. Spänningen stiger 
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Juli har visst varit den mest solfattiga julimånaden på 50 år i sverige så det ska bli skönt att landa i Hong Kong med 30-35 grader värme vanligtvis i slutet av augusti. Under vintern blir det som lägst +10 sägs det.
Med 9 miljoner invånare i Hong Kong lär det bli en smärre förändring mot Göteborg och det ska bli otroligt spännande!
Tags: swedish
Posted in Chalmers, Hong Kong, Personal, Work | No Comments »
Three dimensional forest
As my bachelor thesis, I finally chose the task of measuring individual trees from three dimensional images of a forest, generated by a helicopter equipped with a laser. The raw data was already generated for us so the work consisted mainly of image processing of this data.
The first and crucial part was, of course, to actually find the trees in the forest. The four of us split and implemented two such algorithms in parallell. I was part of implementing an advanced pattern recognition algorithm called Multiscale Isotropic Matched Filtering invented a few years earlier.
Both methods performed well but unfortunately the other algorithm, which was very simple and intuitive in contrast to ours, found more trees.
With the detected trees it was possible to compare our findings to data from ground measurements. With this knowledge it was possible to estimate the relationship between tree height and diameter for example and the tree biomass. The final goal was to get a good estimate of the total biomass in an area. The simple method overestimated the biomass with only 8% and was very accurate.
Anyway, it’s been a rather fun project and I find the area of image processing and pattern analysis very interesting.
Downlod Bachelor thesis report
Posted in Chalmers, Programming | 2 Comments »
Juli har visst varit den mest solfattiga julimånaden på 50 år i sverige så det ska bli skönt att landa i Hong Kong med 30-35 grader värme vanligtvis i slutet av augusti. Under vintern blir det som lägst +10 sägs det.