Imaging processing method and apparatus suitably used for obtaining shading image
US5046108A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1988 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | Oct 26, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S378/901
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An image processing apparatus for obtaining a shading image from a plurality of two-dimensional tomogram images includes a first obtaining section for obtaining a plurality of distance gradation images from the plurality of two-dimensional tomogram images and a second obtaining section for obtaining a distance image having density data is selected from the distance gradation image density data in units of pixels in gradation. The distance image has density data representing, in gradation, distances from a pre-designated area on a pre-designated plane to an object in gradiation. The image processing apparatus further includes a third obtaining section for obtaining a normal image having as density data normal vector components of the object from the distance image, and a fourth obtaining section for obtaining the shading image having as density data luminance data obtained from the density data of the normal image and direction data representing a designated direction from when the object is viewed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.