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Silva, L. F.

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Produced by the NASA Center for Aerospace Information (CASI) 
https://ntrs.nasa.gov/search.jsp?R=19740021579 2020-03-23T06:33:35+00:00Z
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tylab/EREP Report for the period of July 1973 to June 1974.
eroject SR-397 Contract 0 NAS 9-13301
Activities during the subject reporting period were con-
cerned principally with Jbe__acquisition and procea inaoS data
fx.o r,l the SL-2 mission (EREP pass M7) — over the Lake. Monroe, Ind-
...:na t_es.t—site. No data from SL-3 were acquired and dati from
SL-4 is not complete enough for analysis. Products from the
S-l c OA and B, and S-191 sensors were used in the analysis along
wits data from ERTS and supporting aircraft flights and ground
obbervation teams. Data from the S-191 sensor will be used in
future analysis.
(A) Overall Status
During the r"oorting period the SL-2 S190A&B photography,
4 seconds of interim 5192 data, and the interim 5191 data
from pass K7 over the Lake Monroe test site were received. The
S190A&B photography from passes 42 and 51 flown during the SL-3
mission was received but is of little use because of clouds.
For the SL-4 mission the S190A photography was received for
pass 90 over Ft. Wayne.
The S190A & the S192 data from the SL-2 mission have been
processed. The 5192 interim (unfiltered) data has been refor-
matted for LARSYS and has been analyzed. The S190 black and
white multiband frames over the Lake Monroe test site was
digitized by Mead Technology Corp. and the four bands have been
registered. The S190A color IR frame over Lake Monroe was also
separated, digitized and reformatted for use by LARSYS.
The S191 data from SL-2 was not processed because of warn-
ings from JSC. that the data was no good.
To date the analysis has been a comparison of the S192
MSS data, the ERTS MSS data, the digitized b&w multiband
photography and the digitized multiemulsion color IR photo-
graphy. At the present time the results of the analysis are being
written in a paper for presentation at the A.A.S. conference
in Los Angles. Further intensife analysis has been delayed
until the filtered data sets have been received.
(B) Scientific Recommendations
It is recommended that the S192 data be easily available
in a variety of states (raw,filtered, line straightened, conical
(L74-1+)bb1)	 ( r0.0ISI'I'IO,N ANr`' I VncyS:;-r'G
O: LA'IA F'I. (;M 'laiL. SL-2 MIJSION (i- V;, P  P;-
NO. 7) OV17 . 'IHi LANE i`WNvGL,, INLi1ANr'.
I[5? SI'rt)	 Y-atly .:' I!OLt, Ju'. 1`.'73
(Putelu^ Ultiv.)	 4 p IiC v4.07	 -SLL 05P	 1
a
N74-29b)2
Jlic iA
JJot,t
Yearly Report
July 26, 1974
Page Two
etc.) for detailed sensor studies. Also detailed information
on calibration procedures and algorithms used on specific data
be made available and notice of changes made or of problems
found with procedures that may affect the data received by the
principle investigator.
(C) Expected Accomplishments
On receipt of the filtered SL-2 5192 data over the Lake
Monroe test sight, an analysis similar to that of the unfiltered
S192 data set already completed will be done for comparison of
the two data sets. Other accomplishments will depend upon the
data received.
(P) P.esults
The results of the analysis to date have been reported
in a paper submitted for the A.A.S. conference in Los Angeles
in August. A comparison of the four sensors mentioned pre-
viously was done in a land-use analysis of the Lake Monroe
area, principally Lawerence County, Indiana using nine land-
use classes-Residential, Commercial, Extractive, Soil, Grass,
Deciduous Forest, Coniferous Forest, River, & Lake.
The analysis was done using the "best" four channels of
the S192 MSS and also using the four channels which are most
similar to the ERTS MSS. All four channels of the ERTS MSS
were used, as was all four channels of the digitized black
and white multiband photography data set, and all three channels
of the digitized multiemulsion color IR data set. The class-
ification performance results are given in Table 1.
The "best" four channels of Skylab gave comparable results
tc the ERTS MSS. It also appears that the inability to re-
gister the raw multiband photography exactly and an indistinct
boundary around Lake Monroe in the infrared bands affected
the classification perfo rmance of the b&w multiband data set.
The anomaly is in the 2n generation transparencies that
we have in house. It appears that the anomaly may have been
introduced by flare in a lens system or in duplication product
processing.
A study was also done to try to obtain a comparison of the
noise between the ERTS MSS and the Skylab MSS. The details of
how the figures were obtained are given in the A.A.S. paper.
The ERTS MSS appears to have less noise than the Skylab MSS.
See Table 1.
Yearly Report
July 26 9 1974
Page Three
Table 1
CLASSIFICATION PERFOxMANCE RESULTS
(PERCENT CORRECT)
SKYLAB MSS
4 Sand
3.7.8.11 3.5,6.8 ERTS MSS Color IR 86W
97 81 97 91 84
73 33 61 76 46
51 59 61 32 34
87 78 83 67 i8
95 86 93 82 69
81 80 86 84 77
99 68 95 85 43
87 27 77 16 64
89 86 86 98 93
87 80 88 83 76
84 66 82 70 65
Class
Residential
Com-Ind.
Extractive
Soil
Grass
Wood-Decid.
Coniferous
River
Lake
Overall (by points)
Class Average
Table 2
DATA QUALITY MEASURES
OBTAINED FROM A PORTION OF LAKE MONROE
SKYLAB MSS (S192)
Channel
	
Mean Std.	 Dev. Data Spread*(xlO-
2 98.93 6.41 65,
3 53.34 3:39 64.
4 44.85 3.95 88.
5 36.35 3.47 95.
6 34.73 4.63 133.
7 42.86 1.90 44.
8 38.68 3.64 94.
9 33.21 2.79 84.
10 49.43 4.11 83.
11 4A.57 1.84 41.
12 3.40 3.92 15111.
ZRTS MSS
1 66.00 1.58 24.
2 43.26 1.54 36.
3 32.16 2.58 80.
4 19080 2.56 1300
*Std, Dev./Mean
a.
Yearly Report
July 26, 1974
page Four
(E) Travel Summary and Plans
A trip to the Ribeyre Island test site was made in
August, 1973 in preparation of the test site during S1
-3;
however, the site was never flown. Two trips were made to
Bloomingt ,)n, Indiana for consultation with the Bloomington
Municipal Planning Department. Also travel to southern
Tippecanoe County was made to plan a pass during SL
-3. The
pass was never flown.
Future travel is planned to JSC. for the Principle
Investigators Data Meeting in July and to Los Angeles for
the A.A.$ conference in August.
Report submitted by:
Dr. LeRoy F. Silva
Laboratory for Applications of
Remote Sensing
Purdue University'
1220 Potter Drive
West Lafayette, Indiana 47906
Contract Monitor
R. E. Joostan
Mail Code TF 6
Johnson Space Center
National Aeronautics and Space Administration
Houston, Texas 77058
LFS:dse


Acquisition and processing of data from the SL-2 mission (EREP pass no. 7) over the Lake Monroe, Indiana test site

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