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REPORTS OF RELATED ACTIVITIES 
t'is' recognized that most'of the aetive work in the areas of ISPRS 
WG II/3 interest is done independently of ISPRS. In addition to direct 
vities such as listed in the above schedule, personnel of the VC are 
involved in and/or follow the developments of outside activities. Several 
items of direct interest are listed below. 
T. Multispectral Imaging Science Working Groups 
The NASA Office of Space Science and Applications has sponsored a series of 
workshops at which the future remote sensing needs were discussed. The 
following condensed report from the Information Science Panel [MISWG 1982] 
was included in more detail in the Commission II 1982 Congress Proceedings. 
Systems Design 
Flight segment parameters (notably spatial and spectral resolution, revisit 
interval, and viewing conditions) will be influenced by the analysis 
desires of the user community. However, this community has little basis on 
which to decide parameter tradeoffs. What is needed is the development of 
comprehensive remote sensing research with parameter extents which exceed 
all likely parameter limits for the near future, with adequate ancillary 
data. 
Technology for Data Handling 
Digital geographic information systems are being designed to include 
remotely sensed data in conjunction with the more conventional geographic 
data. These systems are each different, designed to serve the developer, 
with little commonality. The multiplicity of data formats has hindered the 
use of disparate data in the solution of geographical problems, although 
the Landsat format family of formats has helped somewhat. 
Data co-registration continues to be a central problem, particularly for 
disparate data, in which the data sets represent different phenomena, and 
so do not easily oeorrelete. The geometric warping required still 
represents a major computer commitment. 
VLSI techniques are being developed which will greatly speed the design and 
implementation of (time consuming, using normal software approaches) 
algorithms in VLSI form. This will.allow VLSI to be used in smaller 
production runs than commercial applications, and thus make these available 
to the relatively small community of remote sensing users. 
Technology for Information Extraction 
With the use of many data planes in a given analysis, and the availability 
of more spectral bands, the data quantities are increasing rapidly for a 
given analysis. Development of quantitative methods of extracting 
information are required, as are methods for storage, labeling, addressing, 
and retrieval of specific data packets upon request by an analyst. 
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