A few words on

Image Processing

Image from the Sinai Palimpsests Project. Used with permission. Syriac text written on top of erased Syriac text.

While the EV System approach was designed to provide images well-suited to sophisticated postprocessing techniques, we don’t include such post-processing tools in PhotoShoot. We are focused on capture-look-organize-save. Our efforts are to provide images of sufficient quality, documentation and provenance to enable a wide range of post processing. PhotoShoot images are compatible with image analysis software such as Hoku, ENVI L3Harris, Image J, GIMP and Adobe Photoshop.

Screenshot of Hoku image processing software

“Hoku is an image processing package for multispectral images. This software is distributed free of charge and is intended for the recovery of erased or damaged writings on ancient manuscripts. Hoku is a batch processing software package. Jobs are defined and parameters are set interactively with a graphical user interface, but jobs are run in batch mode until they conclude. There are no interactive image processing methods available. You cannot touch-up or draw on an image with this software, but you can apply any of several image processing methods to enhance image details that otherwise are difficult to see. The software is written in Java and requires having installed 64-bit Java.”

Dr. Keith T. Knox


Hoku is a Free Software

A set of automated workflows designed to take advantage of multispectral imagery
Picture: https://www.l3harrisgeospatial.com/Software-Technology/ENVI

ENVI is an off-the-shelf software program used to visualize, process and analyze geospatial imagery. It is the industry standard for image processing and analysis software.



ENVI is a Proprietary Software

ImageJ interface
Source: https://en.wikipedia.org/wiki/ImageJ

ImageJ is public domain software for processing and analyzing scientific images.

It is written in Java, which allows it to run on many different platforms.


Image J is a Free Software

GIMP interface
Source: https://en.wikipedia.org/wiki/GIMP

GIMP is a cross-platform image editor available for GNU/Linux, macOS, Windows and more operating systems. It is free software, you can change its source code and distribute your changes.


GIMP is a Free Software

Adobe Photoshop interface
Source: https://en.wikipedia.org/wiki/Adobe_Photoshop

Adobe Photoshop is a raster graphics editor developed and published by Adobe Inc. for Windows and macOS. Photoshop can edit and compose raster images in multiple layers and supports masks, alpha compositing and several color models.



Adobe Photoshop is a Proprietary Software