Bendigo's duplicate image problem: the key decisions that will shape what comes next

Bendigo's cultural institutions are sitting on a problem that has quietly compounded for years: thousands of duplicate digital images clogging collections management systems, inflating storage costs and making genuine historical records harder to find. The question now is not whether to act, but who decides, who pays, and what gets deleted permanently.

The issue has sharpened in 2026 because several institutions face converging pressures. Bendigo Art Gallery on View Street is midway through a digitisation push tied to its 150th anniversary program. The Bendigo Regional Archives Centre, which holds civic records dating to the 1850s, is operating under a Victorian Public Record Office compliance review. And the Goldfields Library Corporation, which serves the Greater Bendigo local government area from its Hargreaves Street branch, is preparing a new digital asset policy for adoption before the end of the 2026 calendar year.

Why duplicates accumulate — and why cleaning them up is harder than it sounds

Duplicate images enter collections in predictable ways. Batch scanning projects produce near-identical files when operators rescan uncertain items. Migrations between software platforms — common when institutions move from legacy systems to cloud-based collections tools — routinely import records multiple times if merge logic fails. Staff turnover means institutional knowledge about what has already been digitised disappears, and the next person starts again.

The practical cost is real. Cloud storage is not free, and collections that have grown without culling now carry annual storage bills that can consume a measurable share of tight operational budgets. For a regional institution running on Victoria's Public Libraries Funding Program allocation, that is money that cannot go to new acquisitions, conservation work or community programs. The Goldfields Library Corporation's draft digital asset policy, expected to go before its board in the September quarter of 2026, is understood to include a storage audit as a first step — though the findings will determine whether the board authorises a full deduplication project or a more limited triage.

La Trobe University's Bendigo campus, anchored on Edwards Road, adds another dimension. Its library system connects to the broader La Trobe network, meaning local deduplication decisions can have flow-on effects for researchers across multiple campuses. Coordinating a cull with university-wide metadata standards is a bureaucratic exercise that takes time even when there is clear will to act.

The decisions that matter most in the months ahead

Three choices will define what actually happens. First, who has authority to mark an image for deletion? In most institutional frameworks, this requires a senior archivist or collections manager to approve each removal — a sensible safeguard, but one that turns a technical problem into a staffing problem when backlogs run to tens of thousands of files. Bendigo Art Gallery's collections team is small; the gallery has publicly described its digitisation ambitions as significant relative to its current staffing level.

Second, what happens to duplicates that are not identical but are very similar — slightly different exposures of the same object, or two scans of the same document at different resolutions? Deleting the lower-quality version sounds obvious, but provenance records may attach to either file, and destroying one can create a gap in the audit trail. The Victorian Public Record Office's retention and disposal authorities govern what can lawfully be destroyed from civic records, and the Bendigo Regional Archives Centre must work within those frameworks regardless of what its own storage budget demands.

Third, how much of this work can be automated? Software that identifies duplicate images using perceptual hashing has become more capable and more affordable. Several Australian state libraries have begun piloting such tools. But automation still requires human review of flagged candidates before deletion — the technology surfaces candidates, it does not make the final call.

For residents and researchers who use these collections, the practical message is straightforward: if there are local photographs, maps or records you want preserved or correctly attributed, the consultation windows opening around these policy reviews are the moment to engage. The Goldfields Library Corporation accepts community submissions on policy matters through its Hargreaves Street branch and via its website. The Bendigo Art Gallery's anniversary digitisation project also has a community contribution component running through the second half of 2026. Those channels will not stay open indefinitely.