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CHARACTERISTICS OF IMAGE OPERATIONS

Posted on December 1, 2021December 1, 2021 By christo No Comments on CHARACTERISTICS OF IMAGE OPERATIONS

There is a variety of ways to classify and characterize image operations. The reason for doing so is to understand what type of results we might expect to achieve with a given type of operation or what might be the computational burden associated with a given operation

Table of Contents

  • Types of operations
  • Types of neighborhoods

Types of operations

The types of operations that can be applied to digital images to transform an input image a[m,n] into an output image b[m,n] (or another representation) can be classified into three categories

OperationCharacterizationGeneric
Complexity/Pixel
Point– the output value at a specific coordinate is dependent only
on the input value at that same coordinate
constant
Localhe output value at a specific coordinate is dependent on the
input values in the neighborhood of that same coordinate
P2
Globalthe output value at a specific coordinate is dependent on all
the values in the input image
N2
Types of image operations
image operations
image operations

Types of neighborhoods

Neighborhood operations play a key role in modern digital image processing. It is therefore important to understand how images can be sampled and how that relates to the various neighborhoods that can be used to process an image

  • Rectangular sampling In most cases, images are sampled by laying a rectangular grid over an image
  • Hexagonal sampling An alternative sampling scheme is shown in Figure 3c and is termed hexagonal sampling
Types of neighborhoods
Types of neighborhoods
image processing Tags:image processing

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