What exactly does the checker show?

It automatically detects and displays highly similar images found on the web, scores similarity across several dimensions such as meaning and structure, and gives a list view plus the number of 警告画像 that exceed a set score.

Why is Hakuhodo offering it outside the company?

The tool was already used inside Hakuhodo, but customer companies asked for it, so the company decided to provide it externally after adding usage-history monitoring.

Image GenerationAI Safety & AlignmentNikkei AI Stocks1d agoOct 19, 2026, 19:01 JST

Hakuhodo opens its 画像類似度チェッカー to corporate clients

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3 Key Points

What happened
On October 19, Hakuhodo said it will offer its 画像類似度チェッカー to companies, automatically detecting and displaying highly similar images on the web for any image a user selects.
Why it matters
Checking AI-generated images against existing works by hand is laborious and judgments vary by person, so a scored, listable result could make that review more consistent.

WHO IT HITSMarketing and legal-review teams at companies producing AI-generated ad creative are the target users, since the tool scores similarity across meaning, structure and other dimensions and counts images above a set threshold as 警告画像.

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Context & Analysis

Hakuhodo's checker addresses a workflow problem rather than a legal rule: copyright-protected text and images can be the basis of infringement claims when similarity is found, yet manually comparing AI-generated images with existing works takes effort and produces uneven judgments across staff. By scoring similarity across meaning, structure and other dimensions and by surfacing the number of 警告画像 above a threshold, the tool turns an ad-hoc visual review into a listable check.

The commercial opening came from demand rather than a planned launch. The checker was already in use inside Hakuhodo, and requests from client companies led to the decision to offer it externally. The version being released adds usage-history monitoring, a change the company frames around AI governance, suggesting that record-keeping is part of what corporate buyers asked for.

FAQ

What exactly does the checker show?: It automatically detects and displays highly similar images found on the web, scores similarity across several dimensions such as meaning and structure, and gives a list view plus the number of 警告画像 that exceed a set score.
Why is Hakuhodo offering it outside the company?: The tool was already used inside Hakuhodo, but customer companies asked for it, so the company decided to provide it externally after adding usage-history monitoring.

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