Dual Convergent Lines (DCL) obfuscates keypoints via two fixed anchors on a partition line to make geometry-recovery attacks ill-posed while remaining compatible with line-based localization solvers.
Obfuscation based privacy preserving representations are recoverable using neighborhood informa- tion
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Revisiting Geometric Obfuscation with Dual Convergent Lines for Privacy-Preserving Image Queries in Visual Localization
Dual Convergent Lines (DCL) obfuscates keypoints via two fixed anchors on a partition line to make geometry-recovery attacks ill-posed while remaining compatible with line-based localization solvers.