Privacy-Preserving Sensing and Two-Stage Building Occupancy Prediction Using Random Forest Learning

Algorithm 2

Feature extraction from raw data.

Result: Extract number of blobs

threshold=25;

% Static or dynamic value based on moving average

Find active cells;

for i=1:64 do

 Reshape 8x8 matrix as a frame;

 ifthen

  Cell = active;

 else

  Cell = inactive

 end

end

ifthen

 Blob found;

 Increase counter value

end

Read counter value;