{ "_id": "6ad9b8acc230b829876fdb6f", "Package": "thinr", "Title": "Binary Image Thinning Algorithms", "Version": "0.3.0.9000", "Authors@R": "person(\"Bill\", \"Denney\", , \"wdenney@humanpredictions.com\",\nrole = c(\"aut\", \"cre\"),\ncomment = c(ORCID = \"0000-0002-5759-428X\",\naffiliation = \"Human Predictions, LLC\"))", "Description": "Thinning (skeletonization) algorithms for binary raster\nimages. Provides seven algorithms behind a single dispatching\nfunction: Zhang-Suen (Zhang and Suen 1984)\n, Guo-Hall (Guo and Hall 1989)\n, a 2-D adaptation of Lee (Lee,\nKashyap, and Chu 1994) , K3M\n(Saeed, Tabedzki, Rybnik, and Adamski 2010)\n, the parallel form commonly\nattributed to Hilditch (1969, in 'Machine Intelligence 4'),\nOPTA / SPTA (Naccache and Shinghal 1984), and Holt and\ncolleagues (1987) . Also provides the\nmedial axis transform (Blum 1967) and a distance transform\nimplementation following Felzenszwalb and Huttenlocher (2012)\n. The thin() API selects the\nalgorithm by name, defaulting to Zhang-Suen. Complements the\nmorphology in the 'EBImage' package, which does not provide a\nthinning operator.", "License": "LGPL-3", "Encoding": "UTF-8", "VignetteBuilder": "knitr", "Config/testthat/edition": "3", "Roxygen": "list(markdown = TRUE)", "RoxygenNote": "8.0.0", "URL": "https://github.com/humanpred/thinr,\nhttps://humanpred.github.io/thinr/", "BugReports": "https://github.com/humanpred/thinr/issues", "Repository": "https://humanpred.r-universe.dev", "Date/Publication": "2026-08-22 23:35:25 UTC", "RemoteUrl": "https://github.com/humanpred/thinr", "RemoteRef": "HEAD", "RemoteSha": "4f4b3aaea7dc5fdd98095e7a0cd00496919e62e4", "NeedsCompilation": "yes", "Packaged": { "Date": "2026-10-22 07:11:07 UTC", "User": "root" }, "Author": "Bill Denney [aut, cre] (ORCID: ,\naffiliation: Human Predictions, LLC)", "Maintainer": "Bill Denney ", "_user": "humanpred", "_type": "src", "_file": "thinr_0.3.0.9000.tar.gz", "_fileid": "https://r2.ropensci.org/148d738ac89fd459c6402f29b82ba2d724795f4b2dc7c5b8646a5e9e04fa3573", "_filesize": 154737, "_sha256": "148d738ac89fd459c6402f29b82ba2d724795f4b2dc7c5b8646a5e9e04fa3573", "_expires": "2027-01-30T07:18:02.000Z", "_created": "2026-10-22T07:11:07.000Z", "_published": "2026-10-22T07:18:04.352Z", "_upstream": "https://github.com/humanpred/thinr", "_status": "success", "_maintainer": { "name": "Bill Denney", "email": "wdenney@humanpredictions.com", "login": "billdenney", "description": "", "uuid": 10359931, "orcid": "0000-0002-5759-428X" }, "_jobs": [ { "job": 119690803967, "time": 126, "config": "linux-devel-arm64", "r": "4.7.0", "check": "OK", "artifact": "12407574856" }, { "job": 119690803931, "time": 124, "config": "linux-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "12408118037" }, { "job": 119690803951, "time": 123, "config": "linux-release-arm64", "r": "4.6.1", "check": "OK", "artifact": "12407798609" }, { "job": 119690804054, "time": 122, "config": "linux-release-x86_64", "r": "4.6.1", "check": "OK", "artifact": "12407898486" }, { "job": 119690803898, "time": 139, "config": "macos-oldrel-arm64", "r": "4.5.3", "check": "OK", "artifact": "12407958134" }, { "job": 119690803957, "time": 166, "config": "macos-oldrel-x86_64", "r": "4.5.3", "check": "OK", "artifact": "12407919712" }, { "job": 119690804038, "time": 140, "config": "macos-release-arm64", "r": "4.6.1", "check": "OK", "artifact": "12408930447" }, { "job": 119690804066, "time": 301, "config": "macos-release-x86_64", "r": "4.6.1", "check": "OK", "artifact": "12408502250" }, { "job": 119688944887, "time": 305, "config": "source", "r": "4.6.1", "check": "OK", "artifact": "12408147401" }, { "job": 119690803862, "time": 106, "config": "wasm-release", "r": "4.6.0", "check": "OK", "artifact": "12409010132" }, { "job": 119690803942, "time": 365, "config": "windows-devel-arm64", "r": "4.7.0", "check": "OK", "artifact": "12408895794" }, { "job": 119690804087, "time": 162, "config": "windows-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "12408057709" }, { "job": 119690804090, "time": 119, "config": "windows-oldrel-x86_64", "r": "4.5.3", "check": "OK", "artifact": "12408935078" }, { "job": 119690803936, "time": 363, "config": "windows-release-arm64", "r": "4.6.1", "check": "OK", "artifact": "12408965567" }, { "job": 119690804018, "time": 121, "config": "windows-release-x86_64", "r": "4.6.1", "check": "OK", "artifact": "12408615935" } ], "_buildurl": "https://github.com/r-universe/humanpred/actions/runs/39738208776", "_commit": { "id": "4f4b3aaea7dc5fdd98095e7a0cd00496919e62e4", "author": "Bill Denney ", "committer": "GitHub ", "message": "Merge pull request #15 from humanpred/fix/news-audit-waiver\n\nWaive the audit on the NEWS entry that records is_border_4()'s removal", "time": 1787441725 }, "_distro": "resolute", "_host": "GitHub-Actions", "_registered": true, "_dependencies": [ { "package": "R", "version": ">= 4.2", "role": "Depends" }, { "package": "Rcpp", "role": "LinkingTo" }, { "package": "Rcpp", "role": "Imports" }, { "package": "bench", "role": "Suggests" }, { "package": "covr", "role": "Suggests" }, { "package": "knitr", "role": "Suggests" }, { "package": "lintr", "role": "Suggests" }, { "package": "rmarkdown", "role": "Suggests" }, { "package": "styler", "role": "Suggests" }, { "package": "testthat", "version": ">= 3.0.0", "role": "Suggests" } ], "_owner": "humanpred", "_selfowned": true, "_usedby": 0, "_updates": [ { "week": "2026-20", "n": 5 }, { "week": "2026-22", "n": 4 }, { "week": "2026-26", "n": 1 }, { "week": "2026-27", "n": 3 }, { "week": "2026-30", "n": 1 }, { "week": "2026-31", "n": 3 }, { "week": "2026-34", "n": 1 } ], "_tags": [ { "name": "v0.3.0", "date": "2026-07-26" } ], "_stars": 0, "_contributors": [ { "user": "billdenney", "count": 61, "uuid": 10359931 } ], "_userbio": { "uuid": 130697527, "type": "organization", "name": "humanpred", "followers": 9 }, "_downloads": { "count": 242, "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/thinr" }, "_devurl": "https://github.com/humanpred/thinr", "_pkgdown": "https://humanpred.github.io/thinr/", "_searchresults": 4, "_topics": [ "cpp" ], "_rbuild": "4.6.1", "_assets": [ "extra/citation.cff", "extra/citation.html", "extra/citation.json", "extra/citation.txt", "extra/contents.json", "extra/manual.pdf", "extra/NEWS.html", "extra/NEWS.txt", "extra/readme.html", "extra/readme.md", "extra/thinr.html" ], "_homeurl": "https://github.com/humanpred/thinr", "_realowner": "humanpred", "_cranurl": true, "_releases": [ { "version": "0.2.0", "date": "2026-05-27" }, { "version": "0.3.0", "date": "2026-07-26" } ], "_exports": [ "distance_transform", "medial_axis", "thin" ], "_help": [ { "page": "distance_transform", "title": "Distance transform of a binary image", "topics": [ "distance_transform" ] }, { "page": "medial_axis", "title": "Medial axis transform", "topics": [ "medial_axis" ] }, { "page": "thin", "title": "Thin (skeletonize) a binary image", "topics": [ "thin" ] } ], "_readme": "https://github.com/humanpred/thinr/raw/HEAD/README.md", "_rundeps": [ "Rcpp" ], "_sysdeps": [ { "shlib": "libstdc++", "package": "libstdc++6", "source": "gcc", "version": "16-20260322-1ubuntu1", "name": "c++", "homepage": "http://gcc.gnu.org/", "description": "GNU Standard C++ Library v3" } ], "_vignettes": [ { "source": "choosing-a-method.Rmd", "filename": "choosing-a-method.html", "title": "Choosing a thinning method", "engine": "knitr::rmarkdown", "headings": [ "What's implemented", "A quick visual comparison", "When to use which", "Small isolated blobs", "Medial axis transform", "Distance transform", "Inputs and outputs", "Performance", "References", "Thinning", "Survey", "Medial axis and distance transform" ], "created": "2026-05-16 19:00:06", "modified": "2026-07-04 20:34:46", "commits": 5 }, { "source": "correctness-properties.Rmd", "filename": "correctness-properties.html", "title": "Correctness properties: edge handling, connectivity, and boundary cases", "engine": "knitr::rmarkdown", "headings": [ "Scope", "1. Edge handling: shapes that touch the frame", "2. Connectivity: thin strokes must not fragment", "3. Distance transform with no background pixel", "4. Invalid input fails loudly", "Summary", "References" ], "created": "2026-07-04 12:11:24", "modified": "2026-07-04 12:11:24", "commits": 1 } ], "_score": 4.845098040014257, "_indexed": true, "_nocasepkg": "thinr", "_universes": [ "humanpred", "billdenney" ], "_binaries": [ { "r": "4.7.0", "os": "linux", "version": "0.3.0.9000", "date": "2026-10-22T07:13:18.000Z", "distro": "resolute", "arch": "aarch64", "commit": "4f4b3aaea7dc5fdd98095e7a0cd00496919e62e4", "fileid": "https://r2.ropensci.org/0f178309deac66a96e8ffa02f9af0d9e287e2cb6c5637ec2940a2cd9d2f2e0f6", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/humanpred/actions/runs/39738208776" }, { "r": "4.7.0", "os": "linux", "version": "0.3.0.9000", "date": "2026-10-22T07:13:17.000Z", "distro": "resolute", "arch": "x86_64", "commit": "4f4b3aaea7dc5fdd98095e7a0cd00496919e62e4", "fileid": "https://r2.ropensci.org/ef6b892da5aa495c7af631b41c3b6bc5d2d394b5b868626050d3b88baac2f1dc", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/humanpred/actions/runs/39738208776" }, { "r": "4.6.1", "os": "linux", "version": "0.3.0.9000", "date": "2026-10-22T07:13:18.000Z", "distro": "resolute", "arch": "aarch64", "commit": "4f4b3aaea7dc5fdd98095e7a0cd00496919e62e4", "fileid": "https://r2.ropensci.org/0dfcbc93da2e89cdfbd249b80e2a74d72c3c587628066d68d6cadbcab5d22b61", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/humanpred/actions/runs/39738208776" }, { "r": "4.6.1", "os": "linux", "version": "0.3.0.9000", "date": "2026-10-22T07:13:17.000Z", "distro": "resolute", "arch": "x86_64", "commit": "4f4b3aaea7dc5fdd98095e7a0cd00496919e62e4", "fileid": "https://r2.ropensci.org/92ac4d660674f00c6c372f5b1f33cadb30d8888162a7cd68846902141f71d04b", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/humanpred/actions/runs/39738208776" }, { "r": "4.5.3", "os": "mac", "version": "0.3.0.9000", "date": "2026-10-22T07:13:11.000Z", "arch": "aarch64", "commit": "4f4b3aaea7dc5fdd98095e7a0cd00496919e62e4", "fileid": "https://r2.ropensci.org/ed0e4dca1481278ff8490591664ec5c0ec51354e7c784312f5e4582d3c3e63fe", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/humanpred/actions/runs/39738208776" }, { "r": "4.5.3", "os": "mac", "version": "0.3.0.9000", "date": "2026-10-22T07:13:36.000Z", "arch": "x86_64", "commit": "4f4b3aaea7dc5fdd98095e7a0cd00496919e62e4", "fileid": "https://r2.ropensci.org/0d0591b6114d7a0753334c8313a97f9c4200f045f7c3d384fd6f02b1fce57417", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/humanpred/actions/runs/39738208776" }, { "r": "4.6.1", "os": "mac", "version": "0.3.0.9000", "date": "2026-10-22T07:13:22.000Z", "arch": "aarch64", "commit": "4f4b3aaea7dc5fdd98095e7a0cd00496919e62e4", "fileid": "https://r2.ropensci.org/79456943c0b89bc97fe5544089424306e920c6a59991617bdb3334d6d83fe3b6", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/humanpred/actions/runs/39738208776" }, { "r": "4.6.1", "os": "mac", "version": "0.3.0.9000", "date": "2026-10-22T07:15:00.000Z", "arch": "x86_64", "commit": "4f4b3aaea7dc5fdd98095e7a0cd00496919e62e4", "fileid": "https://r2.ropensci.org/7577572b71d167780be5b815f69cd3213e7ecdc43ec6f5704d12d21d1953a2a4", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/humanpred/actions/runs/39738208776" }, { "r": "4.6.0", "os": "wasm", "version": "0.3.0.9000", "date": "2026-10-22T07:13:06.000Z", "arch": "emscripten", "commit": "4f4b3aaea7dc5fdd98095e7a0cd00496919e62e4", "fileid": "https://r2.ropensci.org/b4014abbaa612dcbf40fb936e67aa739794ee6a7171a6f264b44aa2ea4ca4b79", "status": "success", "buildurl": "https://github.com/r-universe/humanpred/actions/runs/39738208776" }, { "r": "4.7.0", "os": "win", "version": "0.3.0.9000", "date": "2026-10-22T07:16:12.000Z", "arch": "aarch64", "commit": "4f4b3aaea7dc5fdd98095e7a0cd00496919e62e4", "fileid": "https://r2.ropensci.org/950019b66c79b2362a95416f3542e75ef92a0d692376c1c2fa8f72892449516f", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/humanpred/actions/runs/39738208776" }, { "r": "4.7.0", "os": "win", "version": "0.3.0.9000", "date": "2026-10-22T07:12:28.000Z", "arch": "x86_64", "commit": "4f4b3aaea7dc5fdd98095e7a0cd00496919e62e4", "fileid": "https://r2.ropensci.org/1ec88bd472e6cdb317abbb20ce1f8939828fae76f1e7a3b8bcc44d1b41b2214f", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/humanpred/actions/runs/39738208776" }, { "r": "4.5.3", "os": "win", "version": "0.3.0.9000", "date": "2026-10-22T07:12:36.000Z", "arch": "x86_64", "commit": "4f4b3aaea7dc5fdd98095e7a0cd00496919e62e4", "fileid": "https://r2.ropensci.org/ec928630b20248bc4021db21443648c764e5b2f987b723091b36fb2fc13e5b9d", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/humanpred/actions/runs/39738208776" }, { "r": "4.6.1", "os": "win", "version": "0.3.0.9000", "date": "2026-10-22T07:16:24.000Z", "arch": "aarch64", "commit": "4f4b3aaea7dc5fdd98095e7a0cd00496919e62e4", "fileid": "https://r2.ropensci.org/79df8d71405081354f065ec08f1375c06450205635b7419e2e935197c3b4c6d4", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/humanpred/actions/runs/39738208776" }, { "r": "4.6.1", "os": "win", "version": "0.3.0.9000", "date": "2026-10-22T07:12:29.000Z", "arch": "x86_64", "commit": "4f4b3aaea7dc5fdd98095e7a0cd00496919e62e4", "fileid": "https://r2.ropensci.org/df298f83feb8695416bfc1eeb8bef4edb8fda18626f04e964050ae64761f73fe", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/humanpred/actions/runs/39738208776" } ] }