Introduction - Studying the images by eye can deliver many interesting insights on particle interactions, but the images also encode a wealth of quantitative information which can be extracted with an appropriate understanding of the physical parameters of the bubble chamber and its optical system. This section describes some of the studies which have been perfomed to understand the feasibility of "reconstructing" digitised bubble chamber images for quantitative scientific analysis.

CERN 2m Bubble Chamber - Remarkably, nearly 60 years since the chamber was first commissioned, the basic technical information required to reconstruct particle interactions from measurements of 2m bubble chamber film has been comprehensively preserved by CERN and is publicly available. In particular, the "users' handbook" (https://cds.cern.ch/record/2227678) of the 2m bubble chamber includes all of the information necessary to perfom a basic reconstruction of particle trajectries and interaction verticies within the chamber. Some information on the early studies of reconstructing 2m bubble chamber images can be found in the slides prepared for a talk at the 2023 IOP HEPP conference. In the time since this presentation was delivered, more progress has been made and a journal article is currently being prepared to describe the current understanding.

Big European Bubble Chamber (BEBC) - The CERN Big European Bubble Chamber was one of the final endeavours of the bubble chamber era and one of the largest chambers ever constructed. Recently, at the request of the project, the CERN library very kindly digitised the entire BEBC users' handbook (https://cds.cern.ch/record/101328 - beware, this file is almost 1 GB in size!). BEBC featured optical system involving five "fisheye" cameras and it is expected that the optical reconstruction, based on the users' handbook alone, will be more challenging to decipher than that of the CERN 2m chamber. No comparable concerted effort has yet taken place to reconstruct BEBC images, though some preliminary investigations are planned for the near future.