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Image Tiling Individual orthogonal images are edge-feathered and mosaiced to produce orthogonal image tiles with tile sizes selected to balance single image coverage as well as manageability of open images . These orthogonal tiles provide continuous coverage across the area of interest. While some color balancing is done, these orthogonal tiles are not fully radiometrically balanced or edge-matched . Oblique Images Sensor Size Pixels : 4872 X 3248 in a Landscape orientation. Image Format Industry- standard image format with proprietary image trailer, including JFIF (JPEG) , TIFF, and BMP . Image Quality Images will have an unobstructed view of the ground . In controlled airspace around airports, etc . , and in areas of rapid elevation changes, the image footprint sizes and resolutions may vary. There may be varying degrees of ground illumination and color variations due to lighting and cloud shadows . Due to the nature of oblique aerial photography, there may also be artifacts such as haze and glint and glare caused by reflected sunlight. Measurement Accuracy <0 . 75 % measurement error, excluding user pixel selection error Pixel Placement Accuracy Pictometry provides a visualization system and therefore does not certify image accuracy. However, some Pictometry customers have done their own certification on the Pictometry data after delivery and have shared their results . On average, customers have been seeing better than 2 . 0-meter RMS error at a 95 % confidence level (NMAS 1 : 2400) for oblique imagery over relatively flat terrain or in areas with accurate elevation data, and 4 . 0-meter RMS error at a 95 % confidence level (NMAS 1 : 4800) for more varied terrain or in areas with poor elevation data . However, Pictometry does not guarantee these accuracies and your results may vary. Sensor Orientation Pictometry utilizes an IMU (Inertial Measurement Unit) , ground station post-corrected differential GPS , and Kalman filtering to achieve a high degree of positional and directional accuracy. Sensor Positional Accuracy mean 15cm absolute Sensor Directional Accuracy 0 . 015 degrees absolute (roll/pitch) 0 . 035 degrees absolute (heading) Image Export JFIF (JPEG) , TIFF, BMP EFS software can be utilized to export the images into any of the above industry-standard formats . Notes 1 . The existing National Map Accuracy Standards focus on conventional analog aerial photography products . When used for digital mapping products, it is necessary to specify the approximate image scale (e . g. 1 : 1200) when stating NMAS requirements . 2 . Pictometry ' s orthogonal images provide the coordinate accuracy fulfilling most planemetric requirements, however, Pictometry data is not intended for authoritative definitive mapping or surveying replacement. If there is a need for authoritative mapping products, additional work is required by licensed individuals in order to certify Pictometry ' s orthogonal imagery. Alternatively, a separate , authoritative orthogonal image capture can be done and those orthogonal images used inside of Pictometry . Our oblique images are unique to Pictometry and are intended to provide data not available elsewhere and lateral views with more visual information, such as building stock analysis . In Pictometry the orthogonal and oblique images are linked for your convenience and additional study. With a few clicks you can find the revealing lateral views , height measurements, and other information afforded by the oblique images while using the coordinate accuracy afforded by the orthogonal images . CONFIDENTIAL Page 4 of 4 03012011 Not for distribution to third parties