Objectives:
- Define the term ‘‘digital image processing’’
- Describe the rationale for understanding the use of image postprocessing
techniques in digital radiology - List examples of image postprocessing techniques currently used in digital
imaging modalities - Describe the characteristics of a digital image
- Identify and briefly describe five classes of image postprocessing operations
- State the major difference between point, local, and global processing algorithms
- Explain each of the following: Histogram, Look-up table and Windowing
- Explain the characteristics of spatial frequency filtering using high-pass and low-pass filters
- Define the term ‘‘compression ratio’’ and distinguish between reversible (lossless) compression and irreversible (lossy) compression
- List several commercial image processing tools available for digital radiology
- Outline the use of image processing in dose optimization
- Identify the role of the technologist in image processing in medical imaging