j. Contract approval - Laserfiche WebLink

3. Brightness Determining an orthophoto project's desired overall brightness level depends on user preference. The new imagery can be created with the highest quality available with state of the art scanners and image processing software. Cass County will be given the opportunity to review the overall appearance of the Orthophotography before the imagery goes into full production. When photography is scanned, the scanners use parameters that control brightness and contrast, but the settings must be fine-tuned for optimum results. As more detail is captured at the ends of the spectrum (very bright or dark areas), less detail is captured in the middle of the spectrum. The ability to interpret ground features differs from the ability to see the features plainly. It is still possible to interpret features that may be somewhat obscured. Acceptable detail in bright area. REJECT IF: · The imagery's overall brightness doesn't meet Specifications set before production. ACCEPT IF: · The imagery's overall brightness meets Specifications set before production. 4. Shadows It's nearly impossible to obtain orthophotography without the shadows of buildings or cliffs. However, if the aerial film is exposed and processed correctly, it should have acceptable detail in shadow and bright areas. Sanbom scans the original negatives (rather than diapositives) that will produce better detail in bright and dark areas. A diapositive lacks detail in these areas, because it is a reproduction from the negative. When subsequent generations of film are created, contrast increases and fine 'detail is lost. As with brightness, shadowed areas should contain enough detail so that ground features are interpretable. If a seam line runs through a shadow, the shadow may change position or stop at the seam line. This may draw attention to the shadow, but is not grounds for rejection of data. Acceptable shadow detail. 13 Services Agreement between The Sanborn Map Company, Inc and Cass County, North Dakota