DHash

GPTKB entity

Statements (27)
Predicate Object
gptkbp:instanceOf gptkb:algorithm
gptkbp:advantage fast computation
less robust to geometric transformations
low storage requirements
robust to minor image changes
gptkbp:contrastsWith gptkb:MD5
aHash
pHash
gptkbp:field computer vision
image processing
digital forensics
duplicate image detection
gptkbp:format binary string
https://www.w3.org/2000/01/rdf-schema#label DHash
gptkbp:input gptkb:illustrator
gptkbp:output hash value
gptkbp:step compare adjacent pixel values
concatenate bits to form hash
convert image to grayscale
encode comparisons as bits
resize image to fixed size
gptkbp:supportsAlgorithm perceptual hash function
gptkbp:usedFor image hashing
image similarity detection
perceptual hashing
gptkbp:bfsParent gptkb:CFS_(Cooperative_File_System)
gptkbp:bfsLayer 7