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2. Radiometric Consistency Inconsistent radiometry is one of the most noticeable aesthetic issues in mosaicked Orthophotography. Overview displays of project areas can take on a "checker board" appearance when radiometry isn't properly balanced. When viewed at high resolution, seams between photos may appear as a hard line between distinctly different color, brightness or contrast levels. As a standard option for color orthophotography, Sanborn will color balance the photos to ensure consistent radiometry between photos. If this option is not selected, radiometric consistency will not be corrected and may be removed from these acceptance criteria. Sanborn is continually developing new tools and procedures to better control and blend radiometry. However, changes in the environment during photo capture (such as sun angle or humidity), or differing film processing may result in some minor radiometric differences, even after radiometric balancing, which should be accepted. REJECT IF: · No radiometric corrections have been applied to imagery. · Sharp contrast is visible at photo seams. · There are significant radiometric differences among photographs. ACCEPT IF: · Photo seams are blended to a smooth seam. · There are only minor radiometry differences. · Radiometry is consistent among photographs. Example of imagery with unacceptable radiometric consistency. Example of imagery with acceptable radiometric consistency. This picture shows imagery taken at different times of the day. Imagery to the upper right had more haze in the air when the photograph was captured than to the lower left. This is kept to a minimum through specifications for the capture of aerial photography. This effect does not affect the interpretability of the imagery, and is acceptable as a standard product. Services Agreement between The Sanborn Map Company, Inc and Cass County, North Dakota 12