On Tue, 18 Apr 2023, Luis Felipe Romero wrote:
Dear gdal-dev group members,
I hope this email finds you well. I am Luis Felipe Romero, a researcher from
the University of Malaga in Spain, and I am excited to introduce myself to
this community. My research focuses on algorithms for digital elevation
models (DEM), and in particular, the development of algorithms for the
calculation of the total viewshed.
Recently, my team has developed a highly efficient algorithm that can
calculate the total viewshed for a model of 2500x2500 points in just 4
seconds on a GPU or approximately 2 minutes on a 16-core CPU. Our algorithm
is written in C++, and we also have a version that utilizes CUDA for GPU
acceleration.
I had a conversation with Even Roualt about the possibility of integrating
our algorithm into GDAL. However, he informed me of the incompatibilities
between GDAL and CUDA, but encouraged me to share my intentions with the
group. Therefore, I would like to share our Total Viewshed approach with the
gdal-dev community.
I understand that the performance is not as great as CUDA,
but OpenCL support *is* available in GDAL.
--
Andrew C. Aitchison Kendal, UK
and...@aitchison.me.uk
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