A new image-correlation concept based upon optical heterodyne dectection is presented. In the Heterodyne Optical Correlator System (HOC), two transparencies are relatively oriented and projected onto a common image plane where coincidence is detected. By means of heterodyne optical techniques, the normalized correlation coefficient is determined at each element of a photo diode array detector in the common image place. These correlation values are used to define regions of corresponding image coincidence for a given x-parallax condition. The basic principle of the HOC operation is expressed and an experimental system described. Potential applications for stereocompilation and cartographic feature extraction are briefly described and several other applications are listed. The unique features of the HOC as an area correlation system are included.

  • Corporate Authors:

    American Society of Photogrammetry

    105 North Virginia Avenue
    Falls Church, VA  United States  22046
  • Authors:
    • Balasubramanian
    • Leighty, R D
  • Publication Date: 1976-12

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00148402
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 30 1977 12:00AM