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Images

7 July 2003
This QuickBird satellite image shows the distinctive regular lines of Frascati vineyards at 0.61 m resolution. French research institute Cemagref are working on pattern recognition software to automatically recognize vines from satellite or aerial images.

7 July 2003
This unspecified satellite-derived image shows local slope face direction, overlaid with the limits of the Frascati Denominazione d'Origine Controllata. The 'hottest' reddish colors face the most south, and therefore get more Sun exposure, while 'cooler' colors face towards the north. Such information could be imported into the proposed Bacchus geographical information system to permit vine growers to estimate optimal sites to cultivate particular grape species

7 July 2003
An unspecified satellite image of Frascati imported into a geographic information system and overlaid with other data. Vineyards are shown as green polygons while the pink rectangles are buildings marked on previous maps of the area. Any construction not overlaid with pink is therefore new. Used in this way, Bacchus could track land use changes in vine-growing areas throughout Europe.

3 images above from http://www.esa.int/export/esaSA/SEMO75XO4HD_earth_0.html

Here we see an early image of damaged areas in one area of Napa Valley included in the GRAPES study.

from http://geo.arc.nasa.gov/sge/grapes/grapes.html

Below are three aerial photography false color infrared images taken in the mid to early 1990's showing phylloxera infested areas. Red represents healthy vegetation and near bare soil appears cyan (blue-green).

from http://geo.arc.nasa.gov/sge/grapes/aircraft.html

1993: 2m pixel resolution image

The block in the middle of this image was recently replanted, so it contains very little vine growth yet. All of the blocks in this image were infested with phylloxera and show mottled patterns indicating damaged areas within the blocks.

1994: 5m pixel resolution image

The spatial resolution of this image was coarser than in 1993. The image has a similar appearance to the one above, but the damaged areas have spread and two blocks along the top of the image are now cyan, since the vines there have been pulled out.

1995: 3m pixel resolution image

This image shows more blocks have been pulled out and those that remain may be pulled by now. In contrast, the blocks in the middle of the image are well grown and the lower one has full canopy cover.

More images can be seen at NASA's GRAPES page.

Pamela O'Brien

Salem State College, MS in Geo-Information Science

Professor S. Young GGR909 Remote Sensing

Last modified: December 15, 2003