HMCS Vancouver Pre-Deployment Brief - May 2024 (Web Version).pptx
Fundamentals steps in Digital Image processing
1. CLASS -2
FUNDAMENTAL STEPS IN DIGITAL IMAGE
PROCESSING
• There is no general “theory” of image enhancement .When an image is
processed for visual interpretation.
• Enhancement techniques are so varied and use so many different image
processing approaches.
• Difficult to assemble a meaningful body of techniques suitable for
enhancement in one chapter without extensive background development.
• Beginners in the field of image processing generally find enhancement
applications visually appealing , interesting and relatively simple to
understand.
2.
3. IMAGE ACQUISITION
• It is defined as the action of retrieving an image from some source,
usually a hardware source of processing.
• The image that is required is completely unprocessed.
4. IMAGE ENHANCEMENT
• It is widely used in computer graphics.
• The objectives of image enhancement techniques is to process an
image so that the result is more suitable than the original image for a
specific application.
6. COLOR IMAGE PROCESSING
• It is an area that has been gaining in importance because of the significant
increase in the use of digital images over the internet.
• Color is used also in later chapter as the basics for extracting features of interest
in an image.
7.
8. WAVELETS AND MULTIRESOLUTION
PROCESSING
• It is foundation for representing images in various degrees of
resolution.
• In data compression & for pyramidal representation in which images
are subdivided successively into smaller regions.
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12. IMAGE REPRESENTATION & DESCRIPTION
• After the image is segmented into regions, the resulting aggregate of
segmented pixels is represented & described for further computer
processing.
• Representation in two ways :
• Boundary Representation:
• Based on their external characteristics(its boundary)
• Shape characteristics .Such as corners & inflection.
• Regional Representation:
• Based on their internal characteristics(its region)
• Regional properties : color, texture .
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15. COMPONENTS OF AN IMAGE PROCESSING
SYSTEM
• The basic components comprising a typical general – purpose system used for
digital image processing.
• Two elements are,
• Physical device that is sensitive to the energy radiated by the object we wish
to image.
• A device for converting the output of the physical sensing device into digital
form. Ex: digital video camera
