A technique is described for enhancing fine detail in the production of radiance pictures of targets in which large differences also occur, and where the dynamic range of the picture viewing system is limited. This is achieved by scannig a raster with a mirror-chopper fed detector over the target area, and referencing one sampled area on this target against the next, the radiance intensity from which is reduced by a constant factor. The detector output is then a difference curve related to a derivative trace of the radiance profile, superimposed on the true radiance profile reduced in intensity. The method is compared with a similar technique previously used by Low
© 1967 Optical Society of America
Original Manuscript: July 28, 1966
Published: March 1, 1967
Graham R. Hunt, "Enhancement of Fine Detail in the Presence of Large Radiance Differences," Appl. Opt. 6, 505-509 (1967)
- F. Low, Astrophys. J. 142, 806 (1965). [CrossRef]
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