Image processing
- 1. H A M S A L A T H A . S B U B M 1 5 0 1 2 IMAGE PROCESSING
- 2. INTRODUCTION • It is processing of images using mathematical operations by using any form of signal processing. • The input is an image, a series of images or a video, such as a photograph or video frame • The output of image processing may be either an image or a set of characteristics or parameters related to the image.
- 3. WHAT IS THE USE OF IMAGE PROCESSING? Image processing is required for two main aspects such as:- • Improves the visual appearance of the image to a human viewer. • Preparing images for the measurement of the features and structures present.
- 4. NEED FOR IMAGE PROCESSING • Digital image is “invisible” so it must be prepared for viewing in one or more output devices such as printer , monitor etc. • It can be optimized for the application by enhancing or altering the appearance of structures. • It is possible to analyse the image in the computer and provide clues for the radiologists to detect any abnormality in the human body.
- 5. ACQUIRING IMAGE • The scientific instruments generally create images rather than audible tone or emitting any smell. • In case of space missions to other planets the main component is cameras as we judge the success of those missions by the quality of the images returned.
- 6. TYPES OF IMAGE PROCESSING IMAGE PROCESSING IMAGE TO IMAGE TRANSFORMATIONS IMAGE TO INFORMATION TRANSFORMATION INFORMATION TO IMAGE TRANSFORMATION
- 8. IMAGE TO IMAGE TRANSFORMATIONS • Enhancement • Restoration • Geometry
- 9. IMAGE TO INFORMATION TRANSFORMATIONS • Image statistics (Histograms) • Image compression • Image analysis (Image segmentation, feature extraction, pattern recognition) • Computer aided detection and diagnosis (CAD)
- 11. INFORMATION TO IMAGE TRANSFORMATIONS • Decompression of compressed image data. • Reconstruction of image slices from CT or MRI raw data. • Computer graphics, Animations and Virtual reality (synthetic objects).
- 12. HARDWARE REQUIREMENTS • General purpose computer is used for this purpose. • The four key demands must be met such as:- 1. High resolution 2. Image display 3. Sufficient memory transfer bandwith 4. Sufficient storage space 5. Sufficient computing power Eg: A 32 bit computer can process upto 4GB RAM.
- 13. SOFTWARE REQUIREMENTS • Adobe photoshop • Corel draw • Serif photoplus