{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/silk-simple-learned-keypoints","title":"SiLK -- Simple Learned Keypoints","arxiv_id":"2304.06194","date":"2023-04-12","proceeding":null,"authors":["Pierre Gleize","Weiyao Wang","Matt Feiszli"],"abstract":"Keypoint detection & descriptors are foundational tech-nologies for computer vision tasks like image matching, 3D reconstruction and visual odometry. Hand-engineered methods like Harris corners, SIFT, and HOG descriptors have been used for decades; more recently, there has been a trend to introduce learning in an attempt to improve keypoint detectors. On inspection however, the results are difficult to interpret; recent learning-based methods employ a vast diversity of experimental setups and design choices: empirical results are often reported using different backbones, protocols, datasets, types of supervisions or tasks. Since these differences are often coupled together, it raises a natural question on what makes a good learned keypoint detector. In this work, we revisit the design of existing keypoint detectors by deconstructing their methodologies and identifying the key components. We re-design each component from first-principle and propose Simple Learned Keypoints (SiLK) that is fully-differentiable, lightweight, and flexible. Despite its simplicity, SiLK advances new state-of-the-art on Detection Repeatability and Homography Estimation tasks on HPatches and 3D Point-Cloud Registration task on ScanNet, and achieves competitive performance to state-of-the-art on camera pose estimation in 2022 Image Matching Challenge and ScanNet.","url_abs":"https://arxiv.org/abs/2304.06194v1","url_pdf":"https://arxiv.org/pdf/2304.06194v1.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"abstracts"},"code_links":[{"paper_slug":"silk-simple-learned-keypoints","repo_url":"https://github.com/facebookresearch/silk","is_official":1,"mentioned_in_paper":1,"mentioned_in_github":1,"framework":"jax","reach":{"status":"ok","spdx":"GPL-3.0"}},{"paper_slug":"silk-simple-learned-keypoints","repo_url":"https://github.com/aliyoussef97/silk-prp","is_official":0,"mentioned_in_paper":0,"mentioned_in_github":1,"framework":"jax","reach":null}],"tasks":[{"task_slug":"3d-reconstruction","task_name":"3D Reconstruction"},{"task_slug":"camera-pose-estimation","task_name":"Camera Pose Estimation"},{"task_slug":"diversity","task_name":"Diversity"},{"task_slug":"homography-estimation","task_name":"Homography Estimation"},{"task_slug":"keypoint-detection","task_name":"Keypoint Detection"},{"task_slug":"point-cloud-registration","task_name":"Point Cloud Registration"},{"task_slug":"pose-estimation","task_name":"Pose Estimation"},{"task_slug":"visual-odometry","task_name":"Visual Odometry"}],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"atlas_url":"https://app.syntology.ai/?focus=2304.06194","mcp":{"get_harvested_code_for_paper":{"arxiv_id":"2304.06194"}},"developers":"https://syntology.ai/developers","read_at":"2026-09-24T18:15:14+00:00","read_at_is":"when the build read Syntology's graph, not when any sample ran","claim":"Per-sample execution status on synthesized fixtures; not a correctness claim about the paper. Samples come from repositories linked to the paper, official or community; repo_kind says which.","repos":[{"provenance":"external:paperswithcode_snapshot_2025-07-28","url":"https://github.com/aliyoussef97/silk-prp","reach":null},{"provenance":"external:paperswithcode_snapshot_2025-07-28","url":"https://github.com/facebookresearch/silk","reach":{"status":"ok","spdx":"GPL-3.0"}}],"summary":{"ran":4,"unverified":2},"by_repo_kind":{"listed":{"samples":6,"ran":4,"repositories":1}},"repo_kind_vocabulary":{"official":"The archive marks this repository official for the paper","named_in_paper":"The archive records that the paper mentions this repository; it is not marked official","listed":"In the archive's code links for this paper, not marked official and not recorded as mentioned in the paper","found_in_text":"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"},"n_pointer_only_for_licence":0,"samples":[{"code_sha256_prefix":"81740ef2bb6c1505","entry":"Descriptor_Head","repo":"aliyoussef97/silk-prp","repo_kind":"listed","path":"silkprp/model/SiLK_PrP.py","file_url":"https://github.com/aliyoussef97/silk-prp/blob/HEAD/silkprp/model/SiLK_PrP.py","link_basis":"first_harvest_node","language":"python","status":"ran","verification_level":1,"contract_check":null,"metamorphic_tier":"invariant","behaviour_fingerprint":true,"licence":"MIT","inline_ok":true,"mcp_get_code":{"code_sha256":"81740ef2bb6c1505"}},{"code_sha256_prefix":"e30ee714aa0be621","entry":"Detector_Head","repo":"aliyoussef97/silk-prp","repo_kind":"listed","path":"silkprp/model/SiLK_PrP.py","file_url":"https://github.com/aliyoussef97/silk-prp/blob/HEAD/silkprp/model/SiLK_PrP.py","link_basis":"first_harvest_node","language":"python","status":"ran","verification_level":1,"contract_check":null,"metamorphic_tier":"invariant","behaviour_fingerprint":true,"licence":"MIT","inline_ok":true,"mcp_get_code":{"code_sha256":"e30ee714aa0be621"}},{"code_sha256_prefix":"b85141d37b11202c","entry":"VGG_Backbone","repo":"aliyoussef97/silk-prp","repo_kind":"listed","path":"silkprp/model/SiLK_PrP.py","file_url":"https://github.com/aliyoussef97/silk-prp/blob/HEAD/silkprp/model/SiLK_PrP.py","link_basis":"first_harvest_node","language":"python","status":"ran","verification_level":1,"contract_check":null,"metamorphic_tier":"invariant","behaviour_fingerprint":false,"licence":"MIT","inline_ok":true,"mcp_get_code":{"code_sha256":"b85141d37b11202c"}},{"code_sha256_prefix":"462d0bdab87c963d","entry":"vgg_block","repo":"aliyoussef97/silk-prp","repo_kind":"listed","path":"silkprp/model/SiLK_PrP.py","file_url":"https://github.com/aliyoussef97/silk-prp/blob/HEAD/silkprp/model/SiLK_PrP.py","link_basis":"first_harvest_node","language":"python","status":"ran","verification_level":1,"contract_check":null,"metamorphic_tier":null,"behaviour_fingerprint":false,"licence":"MIT","inline_ok":true,"mcp_get_code":{"code_sha256":"462d0bdab87c963d"}},{"code_sha256_prefix":"b19ed87630247953","entry":"SiLKPrP","repo":"aliyoussef97/silk-prp","repo_kind":"listed","path":"silkprp/model/SiLK_PrP.py","file_url":"https://github.com/aliyoussef97/silk-prp/blob/HEAD/silkprp/model/SiLK_PrP.py","link_basis":"first_harvest_node","language":"python","status":"unverified","verification_level":0,"contract_check":null,"metamorphic_tier":null,"behaviour_fingerprint":false,"licence":"MIT","inline_ok":true,"mcp_get_code":{"code_sha256":"b19ed87630247953"}},{"code_sha256_prefix":"b8afedb4c1cfcf97","entry":"assertion","repo":"aliyoussef97/silk-prp","repo_kind":"listed","path":"silkprp/model/SiLK_PrP.py","file_url":"https://github.com/aliyoussef97/silk-prp/blob/HEAD/silkprp/model/SiLK_PrP.py","link_basis":"first_harvest_node","language":"python","status":"unverified","verification_level":0,"contract_check":null,"metamorphic_tier":null,"behaviour_fingerprint":false,"licence":"MIT","inline_ok":true,"mcp_get_code":{"code_sha256":"b8afedb4c1cfcf97"}}]},"arxiv_metadata":null,"syntology_extracted_results":null}