I already have a full topographical survey; what I now need is an accurate extension that pulls new information from a recent high-resolution drone orthophoto. The aim is to overlay building and landscaping detail onto the existing DWG so the drawing is ready for design work without further edits. The update must capture these elements extracted directly from the imagery: • Building footprints • Pathways and driveways • Garden and lawn areas • Trees and individual shrub locations • Fences and other boundary lines Work inside the current coordinate system, match the 0.5 m contour spacing already used, and keep positional accuracy within 50 mm of ground truth (control points will be supplied). Please return a cleaned, layered DWG plus a PDF plot; layers need clear names so my team can switch them on and off in AutoCAD/Civil 3D. Any photogrammetry or GIS workflow is fine—Pix4D, Agisoft, CloudCompare, QGIS, or similar—so long as the final geometry snaps perfectly over the existing survey when I overlay. I’ll provide the orthophoto TIFF and survey control as soon as we kick off. Deliver the revised drawing, confirm alignment passes a spot-check against the control, and we’re done. Feel free to message if anything is unclear; I’d like a quick turnaround.