XXII ISPRS Congress 2012: Technical Commission VIII

Shortis, M.; Shimoda, H.; Cho, K.

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Multivolume work

Persistent identifier:: 1663813779

Title:: XXII ISPRS Congress 2012

Sub title:: Melbourne, Australia, 25 August-1 September 2012

Year of publication:: 2013

Place of publication:: Red Hook, NY

Publisher of the original:: Curran Associates, Inc.

Identifier (digital):: 1663813779

Language:: English

Additional Notes:: Kongress-Thema: Imaging a sustainable future

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Document type:: Multivolume work

Volume

Persistent identifier:: 1663822514

Title:: Technical Commission VIII

Scope:: 590 Seiten

Year of publication:: 2014

Place of publication:: Red Hook, NY

Publisher of the original:: Curran Associates, Inc.

Identifier (digital):: 1663822514

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(39,B8)

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist ermittelt.; Literaturangaben

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Shortis, M.; Shimoda, H.; Cho, K.

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2019

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: [VIII/6: Agriculture, Ecosystems and Bio-Diversity]

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: EVALUATION OF WHEAT GROWTH MONITORING METHODS BASED ON HYPERSPECTRAL DATA OF LATER GRAIN FILLING AND HEADING STAGES IN WESTERN AUSTRALIA T. Nakanishi, Y. Imai, T. Morita, Y. Akamatsu, S. Odagawa, T. Takeda and O. Kashimura

Document type:: Multivolume work

Structure type:: Chapter

-B8, 2012 ding Stage HyMa Wavelength (nm) 05. 750 000, 2100, 2200 680, 1754 86, 1546 30, 721, 1206, 1573, 726, 2100, 2277 MI wavelengths 45, 630 510, 1680 206, 1331 07, 764, 1047, 1220, 025, 2242 MI wavelength 94. 911 92, 764, 1047, 1330, 676, 2360 MI wavelength 65, 845 000, 2100, 2200 680, 1754 171, 2260 21, 911, 1206, 1586, 726, 2099, 2277 MI wavelengths 65, 845 65, 845 05, 750 00 ... 599 31, 570 I... ] 95. 760 000, 2100, 2200 680, 1754 044, 2393 d 4 s 64, 911, 2045, 2409 MI wavelength 65. 845 65, 845 05, 750 00 ... 599 31, 570 9 , 95. 760 000, 2100, 2200 680, 1754 30, 560 07, 911, 1047, 1206, 477, 2277 1 wavelengths 145. 630 510, 1680 36. 764 07, 764, 1047, 1220, 663, 2360 AI wavelengths fficient of 0.6 or higher :ontent rate, and sture of the later nformance, and 6). sis Results ater Grain Filling Stage x(R?=0.31) A(R’=0.59) A(R>=0.54) International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B8, 2012 XXII ISPRS Congress, 25 August — 01 September 2012, Melbourne, Australia 5,3 Estimation Accuracy Verification For the grain weight, grain nitrogen content rate, ash content, and head moisture, estimated values and actual measured values were compared. In order to verify influences of soil texture differences, comparison results were separately plotted based on soil color (Figure 6). For example, the head moisture in a red color soil area is usually low (approximately 10%), and the growth speed is generally high. The magnitude relation of quadrats was mostly replicated. At the same time, The grain weight, grain nitrogen content rate, and ash content indicated that the estimated values well corresponded to the actual measured values. The determination coefficients for these items were 0.66, 0.81, and 0.70 respectively. Indirect estimations through the biomass, LAI, and SPAD values showed a good degree of conformance. However, these indirect estimation results did not exceed direct estimation results. For the grain weight, grain nitrogen content rate, and ash content, relations with soil color were not observed. f j 5 5 S ie Li | vie E $ = 3? = 13 3 f | 30 d i3 3 | 3 al 3 | Ex i : RR z | : B E 7100 Red scil Red soil |: 3 md Yellow. eb ssi] : 0 1 — i 0 40 20 9 40 90 1 2 3 4 5 i Estimated Valus (g) Estimated Value (9) i (a) Grain Weight (b) Grain Nitrogen Content Rate | 3 50% | 25 | za i g? | 3 HE Z 30% ANE $ | 215 har i | | ë : | 2206 3 { 1 | X 10s Ï 805 Sot | NE Yellow | | c os = Oi 05 115 105. 290508 | % 10% 20 3% 4x Sow | Eastimated Value | Estimated Value (4) (c) Ash Content (d) Head Moisture Figure 6: Comparison Results of Estimated and Actual Measured Values 5.4 Estimation Map Development Estimation maps of the grain weight, grain nitrogen content rate, and ash content were developed by applying the developed estimation model to the entire HyMap data considering local conditions of the study area. In the same manner, an estimation map of the head moisture was also developed (Figure 7). The estimation map corresponded to the distribution pattern of soil color. The red color soil area indicated a low degree of head moisture, while the yellow color soil area showed a high degree of head moisture. To sum up, it is possible to visualize the wheat yield, quality, and growth conditions on a regional scale using the hyperspectral data of the heading and later grain filling stages. 8840000 Legend 3 HS Quadrat 220000 330000 240000 350000 9 2500 5.500 10.600 Meters (a) HyMap Imagery of Heading Stage s + Legend 6860000 pee zr Sid c 6860000 6850000 Mz E Quadrat LLL moo fis An Paddock Estimated Grain Weight (g) 220000 30000 340000 9 25005000 10,000 Meters (b) Grain Weight 320000 330000 340000 350000 À : : | i Legend i pm Quadrat [100 rraton Fit Acca Paddock 2 Estimated Grain Nitrogen (M) 8 SI io 8 E] & 420000 330000 340000 350000 0 25005000 10.000 Meters (c) Grain Nitrogen Content

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