This study evaluated the potential of an autumn LANDSAT MSS diazo-enhanced composite which consisted of one yellow copy of band4, three magenta copies of band 5 and one cyan copy of band 7, to map an area of small scattered forestlands. The standard colour composite of the same scene was also used for comparative purposes. The best diazo composite was made by high-contrast films. The diazo technique used is discussed briefly. Interpretation errors were characterized as commission errors and omission errors which were further classified by size and into errors of boundary placement and errors of identification. Furthermore, they were classified according to land-cover/use and stocking-level stand-size classification systems. The three types of accuracy calculated (classification, interpretation and mapping) indicated, first, the potential of mapping forestlands on a LANDSAT image and, second, that the diazo composite improved the interpretation performance over the standard composite. On both imag...

Mapping of forest resources from a LANDSAT diazo colour composite

A photographic band-ratioing technique was investigated. The data source consisted of 70 mm Landsat Multispectral Scanner (MSS) negatives. The process would require combining registered positive and negative transparencies to achieve a ratio modulation in the resulting print. This would also require compensation for atmospheric effects on the original negatives by special photographic processing. Results indicate an inability to easily correct for atmospheric effects photographically. This was due exclusively to low intensity reciprocity failure. Procedural revisions could include the use of a custom light source, the selection of a different emulsion, the hypersensitization of the emulsion, or some combination of these. Related work could include a less theoretically strenuous application of positive-negative masks for target enhancement.

https://ir.library.oregonstate.edu/downloads/9g54xj33v

An investigation of photographic band-ratioing

How to use transparent diazo colour film for interpretation of landsat images

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How to use transparent diazo colour film for interpretation of landsat images