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Mapping the Fear of Crime, a Web Based GIS Solution to Capturing “Fuzzy” Geography ... - page 26 / 40

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Compression

WHY? From 859K to 14K !!

E.G. a combined image and data object of 859Kb was compressed to 67Kb just using the GZip algorithm, and further compressed to 14Kb with the addition of the shrinking process.

Other algorithms could improve on this.

User dots

Density map

Shrunk to 1/5 size

GIF style compression

GZip

Sent

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