soheil-zz/hammingdistance

ImageHash server with Vantage Point Tree data structure for fast hamming distance calculation of image phashes

Hamming Distance Server in C++

This Hamming Distance server can be used to find matching values in a corpus of data based on hamming distance closeness.

Compile and Run

make will create the executable in the current working directory. Running the following will start the server:

./server [PORT] [DATA_FILE]

• PORT port to start the server on.
• DATA_FILE one value per line, values must be 64-bit integers.

Querying

Make a TCP connection to above port on the client. The input format is

VALUE_TO_FIND_HAMMING_DISTANCE_FOR,THRESHOLD,COUNT

• VALUE_TO_FIND_HAMMING_DISTANCE_FOR is just the value that you'd like to search the corpus of data for.
• THRESHOLD acceptable match threshold value, values with this many or less differing bits are returned.
• COUNT server will only return this many matches, there is no ordering.

Example

From the command line with server running:

echo '2736476346,20,10' | nc 10.23.1.24 11600