block truncation - meaning and definition. What is block truncation
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What (who) is block truncation - definition


Block Truncation Coding         
LOSSY IMAGE COMPRESSION TECHNIQUE
Block truncation coding
Block Truncation Coding (BTC) is a type of lossy image compression technique for greyscale images. It divides the original images into blocks and then uses a quantizer to reduce the number of grey levels in each block whilst maintaining the same mean and standard deviation.
Cheque truncation         
CHECK SCANNING TO OBVIATE PAPER DELIVERY TO THE CHECK'S BANK
Truncation (banking); Check truncation
Cheque truncation (check truncation in American English) is a cheque clearance system that involves the digitization of a physical paper cheque into a substitute electronic form for transmission to the paying bank. The process of cheque clearance, involving data matching and verification, is done using digital images instead of paper copies.
Block (permutation group theory)         
TERM IN MATHEMATICS AND GROUP THEORY
Block system
In mathematics and group theory, a block system for the action of a group G on a set X is a partition of X that is G-invariant. In terms of the associated equivalence relation on X, G-invariance means that