Abstract
A joint transform correlator (JTC) with white light source and a tri-color grating in the input plane is used to encode color patterns into different space frequencies. Four channels of spatial spectrum are used for parallel color pattern recognition. The tri-color grating is made up of three Rochi gratings in three different orientations for red, green and blue primary colors, respectively. Results showed that a strong correlation peak and a shape-only correlation peak appear in the green channel and in the zero order channel, respectively, and no correlation peak appears in the red or blue channel.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 213-214 |
| Number of pages | 2 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 3749 |
| State | Published - 1999 |
| Externally published | Yes |
| Event | Proceedings of the 1999 18th Congress of the International Commission for Optics (ICO XVIII): Optics for the Next Millennium - San Francisco, CA, USA Duration: Aug 2 1999 → Aug 6 1999 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering