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8.7

Binary grouping analysis

Asked by gmk1212 in Probability & Statistics, Algorithms, Math & Science

Tags: binary file analysis

I have a file that contains a bunch of Datablocks that are raw image files. The images can be put together to form a larger image. I need to figure out the positional information for the individual Datablocks so that I can create a program to automatically put them together.

In the Datablock Header, there is information for X and Y size, as well as IDs and groups, or something. What I am looking for is grouping information as well as individual ID information. The most I have assertained thus far is that they are grouped in multiples of 14* or 16*. aka (14*14=196, 16*16=256), however I have not found a fool proof way of grouping them. Even my above observations fall apart towards the middle/end of the list.

I have compiled these Datablock Headers into an HTML file and MS Excel file and have done basic analysis on them. I converted 2 byte blocks to Shorts and 4 byte blocks to integers. I then performed a MIN, MAX, and UNIQUEness calc on them all.

Here is the data:
----------
HTML Format (20MB)
http://www.mydatadump.com/indices.htm

Office 2003 Format (25MB)
http://www.mydatadump.com/indices.xls
 
Related Solutions
Keywords: Binary grouping analysis
Title
1 reverse engineering binary image data …
 
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Tags: binary file analysis
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