JUMBF (JPEG Universal Metadata Box Format)
Definition
A container format (ISO/IEC 19566-5) used by the C2PA specification to embed provenance manifest data within JPEG image files. The JUMBF box is stored in the JPEG's application marker segment and is preserved through most standard JPEG operations.
Related terms
- Adversarial Attack
- In AI detection contexts, a forgery specifically constructed to defeat a trained detector by incorporating small perturbations that cause the detector's classifier...
- Automatic Signature Verification (ASV)
- Algorithmic systems that compare a questioned signature against a reference set using extracted biometric features (stroke curvature, velocity profile, pressure distribution). Designed...
- C2PA (Coalition for Content Provenance and Authenticity)
- An open technical standard that embeds cryptographically signed provenance assertions into media files at the point of capture or editing. A C2PA...
- Content-Aware Fill
- An image editing feature (Photoshop from CS5; AI-driven from version 22.0) that replaces a masked region with synthesised pixel content matching the...
- Diffusion Model
- A generative neural network architecture (Ho et al., 2020; Stable Diffusion, Rombach et al., 2022) that learns to reverse a noise-addition process...
- ESDA (Electrostatic Detection Apparatus)
- A non-destructive technique for detecting indented impressions on paper caused by writing pressure. A physical ink signature on paper produces detectable ESDA...
- GAN (Generative Adversarial Network)
- A neural architecture introduced by Goodfellow et al. (2014) consisting of a generator and discriminator trained in opposition. The generator learns to...
- GAN Spectrum Fingerprint
- Periodic artefacts in the Fourier frequency spectrum of images generated by GAN architectures with upsampling layers. First reported by Zhang et al....
- PRNU (Photo Response Non-Uniformity)
- The unique pattern of pixel-level sensitivity variations in a camera sensor, used as a device fingerprint. A genuine camera-original image carries the...
Explained in
- AI-Generated Documents, Deepfake Signatures and Image ManipulationA container format (ISO/IEC 19566-5) used by the C2PA specification to embed provenance manifest data within JPEG image files. The JUMBF box is stored in the J...