XXII ISPRS Congress 2012: Technical Commission VIII

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

Bibliographic data

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:: LOW-COST, ULTRA-HIGH SPATIAL AND TEMPORAL RESOLUTION MAPPING OF INTERTIDAL ROCK PLATFORMS Mitch Bryson, Matthew Johnson-Roberson and Richard Murphy

Document type:: Multivolume work

Structure type:: Chapter

/8, 2012 um-level zoom lisation system n and a photo- . Figure 5 (b) 1 from medium lisation system ed in a single, ail information dual rock pools of micro-algae 'eriwinkles and he mosaic such n the rock (see gy rimary types of cosystems with e infeasible us- napping allows y, vertical posi- ope and aspect aphic mapping present during variables such f near-infrared :ts on plant and ulations at sev- efore and after not possible to us reducing the ‚ost method al- atial scales and illowing for ap- cially valuable h as seasonality 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 from human impacts such as construction, pollution or climate change in a statistically robust way. The method presented here is not limited to rocky intertidal sub- strata but can also be used for various applications on intertidal mud flats. Conditions on intertidal mud flats can change over an interval of a few minutes - large changes in sediment properties can occur including dewatering of the sediment and the migration of microphytobenthos to the surface (Perkins et al., 2003). These changes can have significant impacts upon sediment stability over the course of a single tidal cycle. Due the dynamic nature of inter- tidal mudflats combined with the relatively slow pace of conven- tional field sampling make it impossible to make measurements of sediment properties across space which are truly independent of changes in time. Our method, by enabling large amounts of data to be acquired in a snapshot of time, at specific times in the tidal cycle, enables independent measurements to be made. Ap- plications include the determination of impacts of structures on sediment properties or the effects of spillage of contaminants e.g. algicides, pesticides or fertiliser (Murphy and Tolhurst, 2009) on phytobenthos. 4 CONCLUSIONS AND FUTURE WORK In this paper, we have described a photogrammetric pipeline that was developed for constructing high-resolution, 3D, photo-realistic terrain models of intertidal areas using multiple low-altitude im- ages collected from a consumer-grade digital camera suspended by a kite platform. Dynamic intertidal ecosystems by their na- ture can change rapidly at the scale of minutes to years making it almost impossible to acquire data that describe changes which oc- cur spatially independently of temporal changes using field-based sampling. The methods presented acquire colour and topographic information across a hierarchy of spatial scales in a very small time interval, enabling changes in spatial distributions of assem- blages to be determined independently of temporal changes. The appropriate sampling of plant and animal assemblages in highly dynamic ecosystems such as intertidal environments is an enduring problem. Ongoing work is focusing on mapping and registering multiple datasets collected over subsequent low tides to track the dynamics of biota in the area over varying timescales. Additionally, ongoing work is focusing on acquiring near-infrared images using a modified consumer grade camera that will compli- ment the visual images and provide additional data such as vege- tation, chlorophyll and algal biomass indices. ACKNOWLEDGEMENTS This work was supported in part by Australian Research Council and the New South Wales State Government. REFERENCES Aber, J., Aber, S. and Pavri, E., 2002. Unmanned Small-format Aerial Photography from Kites for Acquiring Large-scale, High- resolution, Multiview-angle Imagery. In: ISPRS Commission VFIEOS 2002 Conference Proceedings. Aber, J., Sobieski, R., Distler, D. and Nowak, M., 1999. Kite Aerial Photography for Environmental Site Investigations in Kansas. Kansas Academy of Science 102(1-2), pp. 57—67. Agarwal, S., Snavely, N., Seitz, S. and Szeliski, R., 2010. Bundle Semen in the Large. In: European Conference on Computer ision. Artigas, F. and Pechmann, I., 2010. Balloon Imagery Verification of Remotely Sensed Phragmites Australis Expansion in an Urban Estuary of New Jersey, USA. Landscape and Urban Planning 95(1), pp. 105-112. Barber, C., Dobkin, D. and Huhdanpaa, H., 1996. The Quick- hull algorithm for convex hulls. ACM Trans. on Mathematical Software 22(4), pp. 469—483. Beis, J. and Lowe, D., 2003. Shape indexing using approximate nearest-neighbor search in high-dimensional spaces. In: Com- puter Vision and Pattern Recognition, pp. 1000-1006. Frahm, J., Pollefeys, M., Lazebnik, S., Gallup, D., Clipp, B., Raguram, R., Wu, C., Zach, C. and Johnson, T., 2010. Fast ro- bust large-scale mapping from video and internet photo collec- tions. ISPRS Journal of Photogrammetry and Remote Sensing 65(1), pp. 538-549. Furukawa, Y. and Ponce, J., 2010. Accurate, Dense, and Robust Multi-View Stereopsis. IEEE Trans. on Pattern Analysis and Ma- chine Intelligence 32(8), pp. 1362-1376. Guichard, F., Bourget, E. and Agnard, J., 2000. High-resolution remote sensing of intertidal ecosystems: A low-cost technique to link scale-dependent patterns and processes. Limnology and Oceanography 45(2), pp. 328-338. Horn, B. K. P, 1987. Closed-form solution of absolute orien- tation using unit quaternions. Journal of the Optical Society of America 4(4), pp. 629—642. Johnson-Roberson, M., Pizarro, O., Williams, S. and Mahon, L, 2010. Generation and Visualization of Large-scale Three- dimensional Reconstructions from Underwater Robotic Surveys. Journal of Field Robotics 27(1), pp. 21—51. Murphy, R. and Tolhurst, T., 2009. Effects of experimental ma- nipulation of algae and fauna on the properties of intertidal soft sediments. Journal of Experimental Marine Biology and Ecology 379(1-2), pp. 77-84. Murphy, R., Tolhurst, T., Chapman, M. and Underwood, A., 2008. Spatial Variation of Chlorophyll on Estuarine Mudflats determined by Field-based Remote Sensing. Marine Ecology Progress Series 365(1), pp. 45-55. Perkins, R., Honeywill, C., Consalvey, M., Austin, H., Tolhurst, T. and Paterson, D., 2003. Changes in microphytobenthic chloro- phyll a and EPS resulting from sediment compaction due to de- watering: opposing patterns in concentration and content. Conti- nental Shelf Research 23, pp. 575-58. Sklaver, B., Manangan, A., Bullard, S., Svanberg, A. and Handzel, T., 2006. Rapid Imagery through Kite Aerial Photogra- phy in a Complex Humanitarian Emergency. International Jour- nal of Remote Sensing 27(21), pp. 4709-4714. Snavely, N., Seitz, S. and Szeliski, R., 2008. Modeling the world from Internet photo collections. International Journal of Com- puter Vision 80(2), pp. 189-210. Torr, P. and Murray, D., 1997. The Development and Compari- son of Robust Methods for Estimating the Fundamental Matrix. International Journal of Computer Vision 24(3), pp. 271-300. Underwood, A., 1994. On beyond BACI: Sampling designs that might reliably detect environmental disturbances. Ecological Ap- plications 4(1), pp. 3-15.

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