Google/PSU Summer of Code

Refinement of the identification process will focus mainly on reduction false positives. False negatives are often easy to spot through cursory examination, and considering the current evaluation strategy (industrial standard of looking at each point with human eyes), all points are considered false negatives. False positives will have a lower chance of being discovered due to user confidence or indifference. Those structures which are identified as positive should also be marked as possible false positives if the the structure only slightly (within 20% range) meets the requirements for a p

The expected input to the finished(trained) program:

Image File

The image file should be an aerial photograph of the area in question

Export ID

the export ID will identify the GIS program to which the output should be associated with

Scaling factor

the scaling factor will be the intended scale of the photo

Set of coordinates

the coordinates of the upper left-hand corner of the photo

The expected output:

New image file

This may or may not be necessary, depending upon the export ID. This file is an exact copy of the input photo, but with either a point location or an outline around target areas.

object table

This is essentially an ID-dependent file which can be read by the target application to recreate the results of the image processor.

I intend to create a digital image processor which is capable of locating specific structures from aerial photographs. Exact location and accuracy are NOT short term goals of this project, instead, the identification of obviously impervious areas will be stressed. Forecasted problems with this project include:

Discerning structures covered by trees

Many structures will have some tree cover. Hopefully this can be solved by requiring polygons and arcs of a reasonable size to be connected via different traces along what is supposedly the same structure.

I've just finished setting up this Summer of Code Drupal site. The logo photo is of Haystack Rock, on the beautiful Oregon coast near where we live. (The photo was taken by Keith Packard June 2004.) Note that this is typical Oregon coastal Summer weather. We have lots of time to sit indoors and code...