{
  "title": "A line-based progressive refinement of 3D rooftop models using airborne LiDAR data with single view imagery",
  "authors": "Jung and Sohn",
  "year": 2019,
  "doi": "10.1016/j.isprsjprs.2019.01.003",
  "sources": [
    "https://doi.org/10.1016/j.isprsjprs.2019.01.003",
    "https://ausmlab.com/research/progressive-3d-city-modelling/",
    "https://www.researchgate.net/publication/331445005_A_line-based_progressive_refinement_of_3D_rooftop_models_using_airborne_LiDAR_data_with_single_view_imagery"
  ],
  "inspected_sections": [
    "2.1.1 optical lines and corners",
    "2.1.2 collinearity projection",
    "2.2 topological cue integration",
    "2.4 MDL",
    "2.5 MCMC/SA",
    "3.4.2 unchanged roof-plane count"
  ],
  "paper_workflow": [
    "existing LiDAR roof model",
    "image lines and corners",
    "project to existing planes",
    "compass/topological lines",
    "MDL with MCMC and simulated annealing",
    "refined boundaries"
  ],
  "completed_control": "point-only MLP front -> fixed Roofer -> joint semantic support review",
  "control_is_original_paper_algorithm": false,
  "original_algorithm_reproduced": false,
  "required_work": [
    "Implement or obtain Kovesi/Chabat feature extraction, topological proposal kernels and MDL/MCMC/SA optimizer.",
    "Original perspective experiment requires image calibration and orientation; current NAIP input is a georeferenced orthomosaic.",
    "For an NAIP adaptation, explicitly replace perspective ray geometry and document differences; do not claim original benchmark reproduction."
  ],
  "initial_model_difference": "Current control uses shared Roofer rather than the original Jung 2017 L-model pipeline.",
  "official_code_search": "No 2019 algorithm implementation located in this scoped search of the paper and author lab pages; absence is not established.",
  "original_plane_count_preserved": true,
  "tree_semantic_filter_is_not_its_core_task": true,
  "conclusion": "Workflow-order control executed. Original algorithm not reproduced or assessed for superiority in this probe."
}