Papers › Roof material classification from aerial imagery

Roof material classification from aerial imagery

23 Apr 2020arXiv:2004.11482archive 2025-07-28

Roman Solovyev

This paper describes an algorithm for classification of roof materials using aerial photographs. Main advantages of the algorithm are proposed methods to improve prediction accuracy. Proposed methods includes: method of converting ImageNet weights of neural networks for using multi-channel images; special set of features of second level models that are used in addition to specific predictions of neural networks; special set of image augmentations that improve training accuracy. In addition, complete flow for solving this problem is proposed. The following content is available in open access: solution code, weight sets and architecture of the used neural networks. The proposed solution achieved second place in the competition "Open AI Caribbean Challenge".

PaperPDFCodeCode Syntology ran

In Syntology Open this paper in Syntology's Atlas, the map of the papers in Syntology's graph and their citations.

For agents, Syntology's MCP tool lists every function and class Syntology harvested from this paper and whether it ran (how to connect): get_harvested_code_for_paper(arxiv_id="2004.11482")

Code

Syntology Ran 4 of 6 code samples harvested from 1 repository linked to this paper; 2 have no recorded run. Of those that ran: 1 ran · violated contract; 3 ran · our draft was wrong.

By repository: official repository: 6 samples from 1 repository, 4 ran. The run record, sample by sample. “Ran” means executed on a synthesized input, not that the code is correct or reproduces the paper.

ZFTurbo/DrivenData-Open-AI-Caribbean-Challenge-2nd-place-solution officialmentioned in papermentioned on GitHubtf report

Repository list and official/mentioned flags are the archive's, frozen 2025-07-28. Reachability, where shown, is from one Syntology probe window (2026-09-16 to 2026-09-18); repositories not probed show nothing. GitHub stars are not tracked.

Code Syntology ran Syntology

6 samples harvested; 4 ran; 0 honoured the contract we drafted; 2 have no recorded run. Read from Syntology's graph 2026-09-24; that is when this build read the record, not when the samples ran.

1ran · violated contract
3ran · our draft was wrong
2unverified

Licence: 6 of the 6 samples are pointer only, meaning Syntology does not serve that copy's text. This page shows no code text for any sample; each one links to its file in the repository.

Harvested from ZFTurbo/DrivenData-Open-AI-Caribbean-Challenge-2nd-place-solution. “Ran” means the sample executed on a synthesized input. It does not mean the output is correct, and nothing here reproduces the paper's results. “Honoured” and “violated” refer to a contract Syntology drafted from the code itself; “our draft was wrong” and “fixture could not drive it” are failures of Syntology's instrument, not of the code.

Each sample ends with its code_sha256, Syntology's identity for that exact code. An agent fetches the stored sample with Syntology's MCP tool get_code(code_sha256="…") (how to connect); click an identity to copy that call.

Repository labels, per sample. official repository: The archive marks this repository official for the paper. named in the paper: The archive records that the paper mentions this repository; it is not marked official. community (archive-listed): In the archive's code links for this paper, not marked official and not recorded as mentioned in the paper. found in paper text by Syntology: Syntology found this repository in the paper's own text; whether it is the authors' implementation is not asserted. community: Not in the archive's code links for this paper; a community repository Syntology harvested. Samples from a repository marked official are listed first. Licence labels name the repository's licence as recorded at harvest. “Pointer only” means Syntology does not serve that copy's text, for one of four reasons: no licence file was found; the licence was not identified; the licence is recorded as permissive but that copy's record is not marked cleared; or the licence is outside the permissive list Syntology serves text under (MIT, Apache-2.0, BSD and similar). Some licences outside that list permit redistribution, such as WTFPL, and GPL-3.0 under its conditions; they are simply not on the list. Hover a licence label for the reason. File links open the file on GitHub at the default branch, which may have changed since the harvest.

load_from_file ZFTurbo/DrivenData-Open-AI-Caribbean-Challenge-2nd-place-solution/a00_common_functions.py official repository ran · our draft was wrong no licence file found · pointer only · be62f9d3417e260d · report
load_from_file_fast ZFTurbo/DrivenData-Open-AI-Caribbean-Challenge-2nd-place-solution/a00_common_functions.py official repository ran · our draft was wrong no licence file found · pointer only · 289f2859e7bc1220 · report
preproc_input_classifcation ZFTurbo/DrivenData-Open-AI-Caribbean-Challenge-2nd-place-solution/cnn_v1_densenet121/r16_classification_d121_train_kfold_224.py official repository ran · violated contract fingerprinted no licence file found · pointer only · 881cb75b2db21bb9 · report
sort_dict_by_values ZFTurbo/DrivenData-Open-AI-Caribbean-Challenge-2nd-place-solution/a00_common_functions.py official repository ran · our draft was wrong no licence file found · pointer only · 17d2bc6eca9de2b2 · report
simple_aug ZFTurbo/DrivenData-Open-AI-Caribbean-Challenge-2nd-place-solution/cnn_v1_densenet121/r16_classification_d121_train_kfold_224.py official repository unverified no licence file found · pointer only · 2b3f00f49a3d8321 · report
strong_aug ZFTurbo/DrivenData-Open-AI-Caribbean-Challenge-2nd-place-solution/cnn_v1_densenet121/r16_classification_d121_train_kfold_224.py official repository unverified no licence file found · pointer only · b639c99cec12a359 · report

Tasks

ClassificationGeneral ClassificationMaterial Classification

Results from the paper archive 2025-07-28

No leaderboard rows for this paper in the archive.

Report a problem or propose a change · a person checks every report against the paper or source before anything changes; decisions are listed on /corrections