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In 2017, partnership with City of Kirkland, Mercer Island contracted with GeoTerra, Inc. to acquire a contigous block of leaf-off flight. On March 19th, clear skies accompanied with a reasonable window of high sun angle allowed for GeoTerra’s first flight opportunity. Photography was acquired between 11:22am and 2:39pm (PDT) when sun angles were above 35 degrees from horizon. 3-band digital photos were acquired on March 19th using the Vexcel UltraCamFlacon Prime. Each digital image was processed from native format into final 8-bit, 3-band TIF files for use in aerial triangulation and ortho-image processing. A radiometric adjustment was applied on each image using UltraMap to remove the effects of sun spots, and a Project-Based .Color Balance for the blocks of imagery to produce a seamless color across the project areas. |
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In 2017, partnership with City of Kirkland, Mercer Island contracted with GeoTerra, Inc. to acquire a contigous block of leaf-off flight. On March 19th, clear skies accompanied with a reasonable window of high sun angle allowed for GeoTerra’s first flight opportunity. Photography was acquired between 11:22am and 2:39pm (PDT) when sun angles were above 35 degrees from horizon. 3-band digital photos were acquired on March 19th using the Vexcel UltraCamFlacon Prime. Each digital image was processed from native format into final 8-bit, 3-band TIF files for use in aerial triangulation and ortho-image processing. A radiometric adjustment was applied on each image using UltraMap to remove the effects of sun spots, and a Project-Based .Color Balance for the blocks of imagery to produce a seamless color across the project areas. |
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GeoTerra, Inc. City of Kirkland
City of Mercer Island |
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5000 |
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<DIV STYLE="text-align:Left;"><DIV><P><SPAN>In 2017, partnership with City of Kirkland, Mercer Island contracted with GeoTerra, Inc. to acquire a contigous block of leaf-off flight. On March 19th, clear skies accompanied with a reasonable window of high sun angle allowed for GeoTerra’s first flight opportunity. Photography was acquired between 11:22am and 2:39pm (PDT) when sun angles were above 35 degrees from horizon. 3-band digital photos were acquired on March 19th using the Vexcel UltraCamFlacon Prime. Each digital image was processed from native format into final 8-bit, 3-band TIF files for use in aerial triangulation and ortho-image processing. A radiometric adjustment was applied on each image using UltraMap to remove the effects of sun spots, and a Project-Based .Color Balance for the blocks of imagery to produce a seamless color across the project areas. </SPAN></P></DIV></DIV> |
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gis_raster.DBO.MARCH2017 |
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["Aerial Photograpy 2017"] |
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en-US |
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