Image Acquisition - The image is captured by a sensor (Camera), and digitized if the output of the camera or sensor is not already in digital form, using analogue-to-digital
convertor
Image Enhancement
The process of manipulating an image so that the result is more suitable than the original for specific applications
Filtering
Image Restoration
Improving the appearance of an image
Tend to be mathematical or probabilistic models based on human subjective preferences
Color Image Processing
If image is not black-white/grey-scale, Use the colour of the image to extract features of interest in an image
Wavelets
Resolution = Number of Pixels per Inch
The foundation of representing images in various degrees of resolution
Compression
Techniques for reducing the storage required to save an image or the bandwidth required to transmit it
Morphological Processing
Tools for extracting image components that are useful in the representation and description of shape
Output image attributes
Segmentation
Segmentation procedures partition an image into its constituent parts or objects
The more accurate the segmentation, the more likely recognition is to succeed
Types
Threshold
Representation & Description
Representation
Make a decision whether the data should be represented as a boundary or as a complete region
It is almost always follows the output of a segmentation stage
Types
Boundary Representation
Focus on external shape characteristics, such as corners and inflections
Region Representation
Focus on internal properties, such as texture or skeleton shape
Description (Feature selection)
Extracting attributes that result in some information of interest
Object Recognition
Recognition
Process that assigns label to an object based on the information provided by its description
Knowledge Base
Knowledge about a problem domain is coded into an image processing system in the form of a knowledge database
