The Ocean Drilling Program recorded the visual appearance of the
recovered drilled sediments and rocks with whole-core photography.
Those photographs exist as TIFF images in various data centres.
Recent developments in
software, such as Corelyzer, work with strip images of the core
placed on a track alongside measured and observed data. For IODP data
to work with these new systems, the whole core photographs must be
split into compatible image strips. The project described here devised
a method and
software for doing that task.
This web page shows some
outputs. The state of the
project is "Beta", and improvements to the software are being made and delivery
of the full image strip collection is being organized.
These reports are available:
Display of example photos and
Poster of development at stage I:
The Image Strip
The strips are organized by core hole, for example "0736A". Within
each core hole folder are processed files and reduced resolution /
greyscale copies of the
Contains all files used in the processing
Folder per hole
Corelyzer project import file (for latest Corelyzer version only)*1
Table suited to EXCEL, per hole, with metadata for each strip,
including error reports
Program pr Hole to crop the full resolution colour TIFs, attach water
and allow for the scale-mark selvages for each strip
SubFolder with the Image Strips (for each core)
Greyscale reduced resolution untrimmed strip
Greyscale reduced resolution trimmed strip
Colour trimmed strip at resolution of original photo
Colour trimmed strip at resolution of original photo, with scale marks
SubFolder with the Whole Core Photos (for Hole) *2
Photo image file as supplied by Data Archive
SubFolder with the Corelyzer XML frameworks
Corelyzer project per photo (i.e., core) with local URL
Corelyzer project per photo (i.e., core) with web
*1: The TopOffset, BotOffset columns
in this file are redundant for Corelyzer.
SubFolder with miscellaneous outputs and diagnostics
Greyscale reduced copies of the photos
*2: All TIFs in this folder will be
processed; those in sub-folders will not.
The primary program imgSTRIPS_*.py
is available on request. It is Python 2.5 and currently at version 15.
Several other Python scripts are used to to tidy up the project before
The full collection of IODP Image Strips will be
posted at a public site for general use.
For the present, these image strip sets are posted, with their .csv and