An unmanned autonomous vehicle assessment and reporting system may implement a crisscross boustrophedonic flight pattern for capturing images of a structure to develop a three-dimensional model of the same. Patch scan analysis of predefined sample sizes of the roof may be captured in a separate scan and/or as part of the crisscross boustrophedonic flight pattern. The crisscross boustrophedonic flight pattern may include integrated oblique image captures via structure-facing camera angles during approach portions of each pass of a boustrophedonic flight pattern, via structure-facing end passes, and/or via rounded structure-facing end passes. A crisscross boustrophedonic flight pattern may include two or more boustrophedonic flight patterns that are at angles relative to one another.