Use of SC4060-Produced Microfilm Output in Pseudocolor Transformations,
Abstract
The human eye can distinguish only about 15 or 20 shades of gray in a complex black-and-white image. If the image is in color, far more distinctions can be made. Thus the representation of black-and-white original material by a chromatic presentation (pseudocolor) permits the eye to more rapidly or accurately interpret the data. This is one of the objectives of the image enhancement research. A computer-generated pseudocolor transformation of a black-and-white image was produced by assigning a chromaticity-luminance in the pseudocolor image to correspond to each shade of gray in the original image. Intermediate black-and-white records called 'pseudocolor separations' were produced, either photographically or by computer. These separations are of varying densities and control the amount of light which falls on the color material during the printing process. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1970
- Accession Number
- AD0713901
Entities
People
- Jeannine V. Lamar
Organizations
- RAND Corporation