I was able to better understand this approach by connecting to Huffman encoding, where we use a similar strategy to start by merging the smallest nodes and moving up, similar to how here we start by merging smaller bounding boxes and then move up.
I was able to better understand this approach by connecting to Huffman encoding, where we use a similar strategy to start by merging the smallest nodes and moving up, similar to how here we start by merging smaller bounding boxes and then move up.