Exploring IMG Format

TYPWiz 7

Advanced UTF-8 unicode TYP editor

For more information check out here

Quickly change your current map into any colour scheme!

Many of the new features are a result of car sat nav development.

1) Routing is more compacted

2) Includes multiple lane routing/switching on a motorway

3) Handles Junction View (JCV), pictures that popup at junctions, stored as a SVG (text) file

3) polygons can have height to enable 3d structures

4) Searches include Post Codes

5) Can contain raster images(jpgs)

6) Extra POIs and Active Routing

7) Better support for non english/american labelling

Some details regarding NT POIs have been reversed engineered here

Pointer to RGN2 data block,contains polygons with extended types 0 x 100+ ; for undocumented details about its structure see Exploring IMG Format

Offset 0 x 15 points to the first maplevel / subdivision as defined in TRE. with additional information in Exploring IMGFormat

It generally starts with 2 byte offsets to a different element type , ie polylines or polygons,within a given map level block. If just one element, ie polylines, is found ,then the subdivision contains no offsets.

Example:

28 0035 01 64 12 00 00 5e FF BD FF 17 64 CF 00 80 7A 00 94 FF 0F

Pointers are highlighted in bold:

Checkout Latest NT findings

More information in the following document:

Download Exploring IMG Format (pdf)

(latest with info on FID and PID & TRE SEP 3 2012)

Garmin GPI Files (POIs for Car/Bike Satnavs)

More information about its file structure

JUNCTION VIEW

Click here to check out JCV file structure