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DacuSign Envelope ID'. FC3Fg5A4-OA51.4664-8416-344D1AA47C5B <br />APPENDIX 1 PHOTOGRAMMETRIC PRODUCT SPECIFICATIONS <br />Color Digital Orthophotography <br />Product Oven ulrv: <br />Seamless, 4-band, digital ortho-mosaic produced from individual frames and tiled to County's preferred tiling scheme. Specifications and deliverables as follows: <br />Acquisition: <br />Fame Overlap: 60% fbmard/30% side <br />Capture Window: solar elevation �30 degrees or most optimal 4-hour window <br />Environmental Conditions: ground free of snow cover; imagery free of clouds, fog, haze, smoke, and dust <br />Camera System: Pictometry PentaView, Sensor based system; dynamic range of 12 bits per band, ROB +NIR, resampled to 8 bits during processing <br />Ground Control: <br />Points surveyed to meet ASPRS Positional Accuracy Standards Edition t Version l — November 2014 <br />Image Pracessin& <br />Aerial Triangulation: Pietometry will perform aerial triangulation utilizing post -processed exterior orientations, calibrated camera model(s), and specified ground <br />control points as input to the aerial triangulation process. Aerial triangulation process to be performed using Trimble tapho's Match -AT software. <br />Elevation Surface: Best available remain model will be used to support orthorectification; if surface is found to be of insufficient accuracy/quality, to support accuracy <br />specifications, Picmmetry will use automated surface extraction with limited instant editing to generate a surface to support generation of ortbuirragery. <br />Orthorectification: Pictometry will no the triangulated exterior orientation values, calibrated camera interior orientation models, and the specified digital terrain model <br />to perform the Orthorectification. When rectification requires a resampling of the source imagery, cubic convolution will be used. <br />Mosaicking: Global color balancing will be applied to all orthuphoms to create homogeneous ortrophows, within the project area. Local adjustments of brightness <br />values, color, and contrast will be performed if needed, Them will be no obvious seam edge between two adjacent orthophotos. Mosaic will be created using automated <br />semolina steering, with manual edits to eliminate feature misalignment caused by seamlinas which pass thou features above the elevation surface, Feature alignment <br />across seamlines will be 3 pixels or better, When possible, seamlines will be steered away it= elevated features to improve orhophom quality. Final mosaic will be <br />tiled and named according to the agreed upon schema for delivery or as specified below. <br />Tiling Schema: Imagery will be tiled according to mutually agreed upon schema. <br />Delive s• <br />The following will be delivered: <br />3-inch GSD four -band (R,G,B,MR) ortho mosaic tiles (G xTIFF format; according to specified tiling schema) <br />3-inch GSD area -wide ortho mosaic (RGB, ECW format) <br />3-inch GSD area -wide ortho mosaic (ROB, MrSID format) <br />3-inch GSD area -wide ortho mosaic (CIR, ECW format) <br />3-inch GSD area -wide ortho mosaic (CIR, MrSID format) <br />FGDC compliant matadors. <br />AT/Survey report <br />Orthommaic Aceurac <br />3-inch GSD: RMSE(x or y) 0.73 ft; RMSE(r) L06 It. NSSDA (95%) 1.84 ft <br />Third Party Planimetries <br />INTRODUCTION <br />Pictometry and its Subcontractor (DatasetSolutions) shall deliver under this Statement of Work (SOW) <br />Building Representations collected from stereo imagery. The planimetric features (building <br />representations) shall be topologically correct and meet the American Society for Photogrammetryand <br />SCAG_Extemal Entity F'orm_C 11074408_June 17, 2020 <br />1 of 10 <br />