Image authentication
Definition
The process of evaluating whether an image faithfully represents the scene it purports to show, using analysis of pixel statistics, file metadata, and structural consistency.
Related terms
- Active authentication
- Authentication that depends on a signal deliberately inserted at capture time, such as a digital watermark, a cryptographic hash, or a manufacturer's...
- Copy-move forgery
- A manipulation that clones a region from within the same image and pastes it elsewhere, typically to hide an object or repeat...
- Image verification
- The narrower task of confirming that a specific file originated from a claimed device or has not changed since capture, often relying...
- Passive (blind) authentication
- Analysis that relies solely on traces in the existing image data, with no pre-embedded signal. Methods include noise analysis, JPEG artefact examination,...
- Splicing
- A manipulation that inserts content from a completely different source image into the target, producing a composite that may look coherent but...
Explained in
- Image Authentication: Principles and the Forgery TaxonomyThe process of evaluating whether an image faithfully represents the scene it purports to show, using analysis of pixel statistics, file metadata, and structur...