Localisation map

Related terms

Affine transform estimation

The recovery of the geometric transformation (rotation, scaling, shear) relating a copied region to its source, using matched keypoint pairs. Geometrically consistent...

Block-matching

A copy-move detection strategy that divides the image into overlapping fixed-size blocks, computes a compact feature vector per block, sorts vectors, and...

Chromatic aberration

Colour fringing at high-contrast edges caused by differential refraction of light wavelengths by a lens. The pattern is lens-specific and inconsistent across...

Copy-move forgery

An intra-image manipulation in which a patch copied from one location within the image is pasted over another location in the same...

Noiseprint

A CNN-based camera-model fingerprint extractor by Cozzolino and Verdoliva. Applied to deepfakes, it reveals inconsistency between the camera fingerprint in the genuine...

Passive forgery detection

Detection that operates on the image data alone, without any pre-embedded watermark or signature. Distinguished from active methods such as digital watermarking...

SIFT (Scale-Invariant Feature Transform)

A keypoint descriptor algorithm that detects interest points and computes 128-dimensional descriptors invariant to scale and rotation. In forgery detection, matching SIFT...

Splicing

An inter-image manipulation in which content from one or more external images is inserted into a target image. Splicing introduces cross-boundary inconsistencies...

Explained in

• Copy-Move and Splicing Detection in ImagesThe output of a forgery detection algorithm that marks, at pixel or block resolution, which regions of the image are identified as manipulated. A binary or hea...