Digital image processing
Abstract
The technology of image processing is concerned with a manipulation of the elements of a picture to enhance its information content. Digital image processing involves the use of a digital computer for the required operations. In the case of images transmitted from spacecraft, the images are received at ground stations in the form of a stream of binary-coded data bits which are recorded on magnetic tape. The data can be converted to pictures by means of a straightforward process involving a film recorder. However, the results are often unsatisfactory in connection with geometric, photometric, and other types of distortion. The elimination of distortion by means of data manipulations conducted with the aid of computers is discussed, taking into account photometric manipulation, geometric correction, precision registration, and image enhancement.
- Publication:
-
Quest
- Pub Date:
- November 1977
- Bibcode:
- 1977Quest...1....2K
- Keywords:
-
- Digital Techniques;
- Image Enhancement;
- Image Processing;
- Landsat Satellites;
- Photometry;
- Earth Resources;
- Image Contrast;
- Nasa Programs;
- Optical Correction Procedure;
- Technological Forecasting;
- Instrumentation and Photography