ORTHOPHOTO DELIVERY REVIEW
Yenra | October 11, 2026
Guide: https://yenra.com/digital-mapping-camera/

Use this plain-text worksheet in a text editor. Save a separate copy for
each delivery. Record evidence paths and unresolved questions; blanks
mean not yet checked. This aid is not a professional survey specification.

PROJECT REQUIREMENTS
Purpose and features to identify:
Area of interest / boundary file:
Required acquisition date or season:
Required output pixel spacing (GSD, units):
Required positional accuracy, units and assessment method:
Who agreed these requirements:

FILES AND METADATA
Provider / delivery version / date received:
Raster file names and format:
Acquisition dates:
Coordinate reference system and units:
Elevation model / vertical reference if applicable:
Calibration, control and processing documentation:
Accuracy report (checkpoint count, distribution, quality, method, residuals):
License / permitted reuse:

REVIEW IN A GIS
Raster opens with its metadata:
Reference layer source, date and known accuracy:
Coordinate systems and transformations checked:
Coverage gaps, clouds, shadows or vegetation:
Seam / roof / bridge defects (coordinates and screenshot paths):
Accuracy report meets the agreed criterion? Evidence:
Separate elevation deliverable assessment, if required:

DECISION
Unresolved item | owner | evidence needed | review date:
Accepted uses and explicit exclusions:
Reviewer / decision / date:

ILLUSTRATIVE CALCULATION
A 50 cm-wide path at 5 cm GSD spans about 50 / 5 = 10 pixels.
This describes sampling under ideal viewing conditions. It establishes
neither visibility in every scene nor positional accuracy.

Sources and further context are linked from the guide. USGS calibration:
https://pubs.usgs.gov/publication/ofr20231033/full