On Stereo Viewing of SAR Images
The interpretability of side-looking radar images can be significantly enhanced by the use of overlapping image strips viewed stereoscopically. Although the subject has been studied for many years, the lack of systematically acquired data has meant that the optimum sensor geometry for good stereo vi...
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| Published in | IEEE transactions on geoscience and remote sensing Vol. GE-23; no. 2; pp. 110 - 117 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
Legacy CDMS
IEEE
01.03.1985
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0196-2892 |
| DOI | 10.1109/TGRS.1985.289407 |
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| Abstract | The interpretability of side-looking radar images can be significantly enhanced by the use of overlapping image strips viewed stereoscopically. Although the subject has been studied for many years, the lack of systematically acquired data has meant that the optimum sensor geometry for good stereo viewing and mapping accuracy is still undetermined. This paper attempts to evaluate stereo viewability using available real images and describes on-going work utilizing digital elevation maps and computer image simulation. |
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| AbstractList | Stereo viewing is indispensable for the measurement of homologue points in two overlapping images and the subsequent reconstruction of the three-dimensional topographic relief. Aspects of stereo viewing geometry are discussed along with problems of radar stereoscopy, taking into account stereo evaluation with an exaggeration factor, the viewability of real images, and radar stereoscopic computations. Attention is given to the definition of radar stereoscopic exaggeration, questions of image simulation, and the accuracy obtained with parallax measurements in radar images. An evaluation with a large set of about 40 radar stereo models demonstrates that same-side arrangements provide good stereo viewability. This result was confirmed for aircraft radar with look angles off-nadir of 60-80 deg and intersection angles between 0.2 deg and 23 deg, and for satellite radar (Seasat) with look angles of 20 deg and interaction angles of 1.2 deg - 4.8 deg. The interpretability of side-looking radar images can be significantly enhanced by the use of overlapping image strips viewed stereoscopically. Although the subject has been studied for many years, the lack of systematically acquired data has meant that the optimum sensor geometry for good stereo viewing and mapping accuracy is still undetermined. This paper attempts to evaluate stereo viewability using available real images and describes on-going work utilizing digital elevation maps and computer image simulation. |
| Audience | PUBLIC |
| Author | Leberl, Franz W. Raggam, Johannes Kobrick, Michael |
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| Cites_doi | 10.1109/TGE.1974.294356 10.1109/TGE.1973.294315 10.21236/AD0903321 |
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| EndPage | 117 |
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| References | konecny (ref12) 1972; 42 rosenfield (ref23) 1968; xxxiv laprade (ref16) 1980 gracie (ref8) 1970 (ref7) 1974 bair (ref1) 1975; xli ref2 graham (ref9) 1975 leberl (ref20) 1979 derenyi (ref5) 1975 rinner (ref22) 1972 innes (ref10) 1964 leberl (ref18) 1975 leberl (ref19) 1978 laprade (ref15) 1975 laprade (ref14) 1970 ref3 domik (ref6) 1984 laprade (ref13) 1963; xxix leberl (ref17) 1972 muenster (ref21) 1942 (ref4) 1974 kaupp (ref11) 1982 |
| References_xml | – year: 1972 ident: ref22 publication-title: Band III al1 Handbuch der Vermessungskunde – year: 1974 ident: ref7 publication-title: "Preliminary imagery data analysis Goodyear electronic mapping system (GEMS) " – start-page: 346 year: 1942 ident: ref21 article-title: ueber einige probleme der stereoskopischen messung publication-title: Z f r Instrumentenkunde – year: 1975 ident: ref15 publication-title: "Addendum to GIB-9169 subjective considerations for stereo radar " – year: 1980 ident: ref16 publication-title: Manual of Photogrammetry – volume: xli year: 1975 ident: ref1 article-title: height measurement with stereo radar publication-title: Photogrammetr Eng – year: 1982 ident: ref11 article-title: comparison of simulated stereo radar imagery publication-title: IGARSS 1982 Munich FRG – year: 1972 ident: ref17 article-title: on model formation with remote sensing imagery publication-title: sterreichische Z f r Vermessungswesen – year: 1970 ident: ref14 publication-title: "Subjective considerations for stereo radar " – start-page: 249 year: 1984 ident: ref6 article-title: radarbildanalyse mit digitalen hohenmodellen publication-title: Bildmessung und Luftbildwesen – ident: ref2 doi: 10.1109/TGE.1974.294356 – ident: ref3 doi: 10.1109/TGE.1973.294315 – year: 1975 ident: ref9 article-title: flight planning for radar stereo mapping publication-title: Proc Am Soc Photogrammetr 41st Meeting – year: 1979 ident: ref20 publication-title: "Accuracy aspects of stereo-side-looking radar " – start-page: 156 year: 1978 ident: ref19 article-title: satellitenradargrammetrie publication-title: Deutsche Geodaetische Kommission – volume: xxxiv year: 1968 ident: ref23 article-title: stereo radar techniques publication-title: Photogrammetr Eng – year: 1964 ident: ref10 publication-title: "Principles of SLAR-measurements of the third coordinate of target position " – volume: xxix year: 1963 ident: ref13 article-title: an analytical and experimental study of stereo for radar publication-title: Photogrammetr Eng – year: 1975 ident: ref5 article-title: topographical accuracy of side looking radar imagery publication-title: Bildmessung und Luftbildwesen – year: 1974 ident: ref4 publication-title: "Research studies and investigations for radar control extensions " – volume: 42 year: 1972 ident: ref12 article-title: gometrische probleme der fernerkundung publication-title: Bildmessung und Luftbildwesen – year: 1970 ident: ref8 publication-title: "Stereo radar analysis " doi: 10.21236/AD0903321 – year: 1975 ident: ref18 article-title: lunar radargrammetry with alse-vhf-imagery publication-title: Proc Amer Soc Photogramm |
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| Snippet | The interpretability of side-looking radar images can be significantly enhanced by the use of overlapping image strips viewed stereoscopically. Although the... Stereo viewing is indispensable for the measurement of homologue points in two overlapping images and the subsequent reconstruction of the three-dimensional... |
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| SubjectTerms | Computational modeling Geometry Image reconstruction Instrumentation And Photography Laboratories Propulsion Radar antennas Radar imaging Sensor systems Space technology Strips |
| Title | On Stereo Viewing of SAR Images |
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