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.
- 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.
- 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.
- 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 .
- 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
- 16. COMPONENTS OF AN IMAGE PROCESSING SYSTEM