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allowing R users to work with dlib through Rcpp

R 0.01% C++ 98.60% CMake 0.56% C 0.28% Cuda 0.54% MATLAB 0.01% Shell 0.01%

dlib image-recognition machine-learning r rcpp robotics

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dlib's Issues

Link to example is broken

The link from README.md to https://github.com/bnosac/image.dlib is broken.

assert does not play well with CRAN

It seems that conversions of exit(), abort(), std::cout and std::cerr into Rcpp equivalents have been done for complying to CRAN rules. But I just ran into this error again when CRAN-checking one of my packages the links to dlib. It seems assert() is prohibited as well by CRAN but it is still in use in dlib as far as I understand.

R installation segfault

Hi! I'm really interested in using dlib's find_max_global from R, so I tried to install the package but I ran into errors. Here's my sessionInfo() and the logs from my second installation attempt. (My first gave me a lot of errors related to JPEG loading, so I removed -DDLIB_JPEG_SUPPORT in Makevars)

> sessionInfo()
R version 3.5.2 (2018-12-20)
Platform: x86_64-apple-darwin15.6.0 (64-bit)
Running under: macOS High Sierra 10.13.6

Matrix products: default
BLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/3.5/Resources/lib/libRlapack.dylib

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

loaded via a namespace (and not attached):
 [1] Rcpp_1.0.0        rstudioapi_0.8    magrittr_1.5      usethis_1.4.0     devtools_2.0.1    pkgload_1.0.2    
 [7] R6_2.3.0          rlang_0.3.1       tools_3.5.2       pkgbuild_1.0.2    sessioninfo_1.1.1 cli_1.0.1        
[13] withr_2.1.2       remotes_2.0.2     yaml_2.2.0        assertthat_0.2.0  digest_0.6.18     rprojroot_1.3-2  
[19] crayon_1.3.4      processx_3.2.0    callr_3.0.0       base64enc_0.1-3   fs_1.2.6          ps_1.2.1         
[25] testthat_2.0.1    glue_1.3.0        memoise_1.1.0     compiler_3.5.2    desc_1.2.0        backports_1.1.2  
[31] prettyunits_1.0.2

> devtools::install_local('~/lib/dlib/')
✔  checking for file ‘/private/var/folders/tk/pjpslqns2z36gd_64m23j2kx__t6v6/T/RtmpI1e9Tz/filecea31e5fc152/dlib/DESCRIPTION’ ...
─  preparing ‘dlib’: (595ms)
✔  checking DESCRIPTION meta-information
─  cleaning src
─  checking for LF line-endings in source and make files and shell scripts
─  checking for empty or unneeded directories
─  building ‘dlib_1.1.tar.gz’
   Warning: invalid uid value replaced by that for user 'nobody'
   Warning: invalid gid value replaced by that for user 'nobody'
   
* installing *source* package ‘dlib’ ...
** libs
clang++ -std=gnu++11 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG  -include r_cmd_check_happiness.h -I"/Library/Frameworks/R.framework/Versions/3.5/Resources/library/Rcpp/include" -I/usr/local/include  -I../inst/include -DDLIB_PNG_SUPPORT -DDLIB_NO_GUI_SUPPORT  -fPIC  -Wall -g -O2 -c RcppExports.cpp -o RcppExports.o
clang++ -std=gnu++11 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG  -include r_cmd_check_happiness.h -I"/Library/Frameworks/R.framework/Versions/3.5/Resources/library/Rcpp/include" -I/usr/local/include  -I../inst/include -DDLIB_PNG_SUPPORT -DDLIB_NO_GUI_SUPPORT  -fPIC  -Wall -g -O2 -c dlib-core.cpp -o dlib-core.o
clang++ -std=gnu++11 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG  -include r_cmd_check_happiness.h -I"/Library/Frameworks/R.framework/Versions/3.5/Resources/library/Rcpp/include" -I/usr/local/include  -I../inst/include -DDLIB_PNG_SUPPORT -DDLIB_NO_GUI_SUPPORT  -fPIC  -Wall -g -O2 -c dlib-example.cpp -o dlib-example.o
clang++ -std=gnu++11 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG  -include r_cmd_check_happiness.h -I"/Library/Frameworks/R.framework/Versions/3.5/Resources/library/Rcpp/include" -I/usr/local/include  -I../inst/include -DDLIB_PNG_SUPPORT -DDLIB_NO_GUI_SUPPORT  -fPIC  -Wall -g -O2 -c r_cmd_check_happiness.cc -o r_cmd_check_happiness.o
clang++ -std=gnu++11 -dynamiclib -Wl,-headerpad_max_install_names -undefined dynamic_lookup -single_module -multiply_defined suppress -L/Library/Frameworks/R.framework/Resources/lib -L/usr/local/clang4/lib -o dlib.so RcppExports.o dlib-core.o dlib-example.o r_cmd_check_happiness.o -lpng -lz -F/Library/Frameworks/R.framework/.. -framework R -Wl,-framework -Wl,CoreFoundation
ld: warning: text-based stub file /System/Library/Frameworks//CoreFoundation.framework/CoreFoundation.tbd and library file /System/Library/Frameworks//CoreFoundation.framework/CoreFoundation are out of sync. Falling back to library file for linking.
installing to /Library/Frameworks/R.framework/Versions/3.5/Resources/library/dlib/libs
** R
** inst
** byte-compile and prepare package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded
sh: line 1: 53608 Segmentation fault: 11  '/Library/Frameworks/R.framework/Resources/bin/R' --no-save --slave 2>&1 < '/var/folders/tk/pjpslqns2z36gd_64m23j2kx__t6v6/T//RtmpdVwV4F/filed11e39c17dce'

 *** caught segfault ***
address 0xffffffffffffffe8, cause 'memory not mapped'

Traceback:
 1: dyn.load(file, DLLpath = DLLpath, ...)
 2: library.dynam(lib, package, package.lib)
 3: loadNamespace(package, lib.loc)
 4: doTryCatch(return(expr), name, parentenv, handler)
 5: tryCatchOne(expr, names, parentenv, handlers[[1L]])
 6: tryCatchList(expr, classes, parentenv, handlers)
 7: tryCatch({    attr(package, "LibPath") <- which.lib.loc    ns <- loadNamespace(package, lib.loc)    env <- attachNamespace(ns, pos = pos, deps)}, error = function(e) {    P <- if (!is.null(cc <- conditionCall(e)))         paste(" in", deparse(cc)[1L])    else ""    msg <- gettextf("package or namespace load failed for %s%s:\n %s",         sQuote(package), P, conditionMessage(e))    if (logical.return)         message(paste("Error:", msg), domain = NA)    else stop(msg, call. = FALSE, domain = NA)})
 8: library(pkg_name, lib.loc = lib, character.only = TRUE, logical.return = TRUE)
 9: withCallingHandlers(expr, packageStartupMessage = function(c) invokeRestart("muffleMessage"))
10: suppressPackageStartupMessages(library(pkg_name, lib.loc = lib,     character.only = TRUE, logical.return = TRUE))
11: doTryCatch(return(expr), name, parentenv, handler)
12: tryCatchOne(expr, names, parentenv, handlers[[1L]])
13: tryCatchList(expr, classes, parentenv, handlers)
14: tryCatch(expr, error = function(e) {    call <- conditionCall(e)    if (!is.null(call)) {        if (identical(call[[1L]], quote(doTryCatch)))             call <- sys.call(-4L)        dcall <- deparse(call)[1L]        prefix <- paste("Error in", dcall, ": ")        LONG <- 75L        sm <- strsplit(conditionMessage(e), "\n")[[1L]]        w <- 14L + nchar(dcall, type = "w") + nchar(sm[1L], type = "w")        if (is.na(w))             w <- 14L + nchar(dcall, type = "b") + nchar(sm[1L],                 type = "b")        if (w > LONG)             prefix <- paste0(prefix, "\n  ")    }    else prefix <- "Error : "    msg <- paste0(prefix, conditionMessage(e), "\n")    .Internal(seterrmessage(msg[1L]))    if (!silent && isTRUE(getOption("show.error.messages"))) {        cat(msg, file = outFile)        .Internal(printDeferredWarnings())    }    invisible(structure(msg, class = "try-error", condition = e))})
15: try(suppressPackageStartupMessages(library(pkg_name, lib.loc = lib,     character.only = TRUE, logical.return = TRUE)))
16: tools:::.test_load_package("dlib", "/Library/Frameworks/R.framework/Versions/3.5/Resources/library")
An irrecoverable exception occurred. R is aborting now ...
ERROR: loading failed
* removing ‘/Library/Frameworks/R.framework/Versions/3.5/Resources/library/dlib’
Error in i.p(...) : 
  (converted from warning) installation of package ‘/var/folders/tk/pjpslqns2z36gd_64m23j2kx__t6v6/T//RtmpI1e9Tz/filecea387c6070/dlib_1.1.tar.gz’ had non-zero exit status

Using optimization.h in Rcpp

Thank you very much for this package! I want to do constrained optimization with Rcpp and found this package helpful.

I would like to test the examples given in optimization_ex.cpp.html (http://dlib.net/optimization_ex.cpp.html) in Rcpp but got the following message:

no matching constructor for initialization of 'dlib::matrix<double,0,1,
dlib::memory_manager_stateless_kernel_1,dlib::row_major_layout>'

Below are my codes:

#include <Rcpp.h>
using namespace Rcpp;
// [[Rcpp::plugins(cpp11)]]
// [[Rcpp::depends(dlib)]]
#include <dlib/optimization.h>
using namespace dlib;
using namespace std;
typedef matrix<double,0,1> column_vector;
// [[Rcpp::export]]
double rosen (const column_vector& m)
{
//const column_vector m;
//const double x = m(0);
//const double y = m(1);
const double x = 1;
const double y = 1;
double res = 100.0pow(y - xx,2) + pow(1 - x,2);
return(res);
}

Can you provide me with some guidance on the problem? Thanks.

undefined symbol: _ZN4dlib6base64D1Ev

Hello,

Thanks for the package.

I tried to use this package to face detection, but it does not works as expected:

I use very simple example:

// [[Rcpp::plugins(cpp11)]]
// [[Rcpp::depends(dlib)]]


#include <Rcpp.h>
#include <iostream>
#include <dlib/image_processing/frontal_face_detector.h>
#include <dlib/image_io.h>


using namespace Rcpp;

//' @title Detect face
//'
//' @param file Path to image file
//'
//' @export
//'
// [[Rcpp::export]]
void face_detect(std::string file) {
    dlib::frontal_face_detector detector = dlib::get_frontal_face_detector();

    dlib::array2d<unsigned char> img;
    dlib::load_image(img, file);

    std::vector<dlib::rectangle> dets = detector(img);

    std::cout << "Number of faces detected: " << dets.size() << std::endl;
}

And Makevars:

CXX_STD = CXX11 
PKG_CPPFLAGS = -DENABLE_ASSERTS
PKG_LIBS = -lpthread -lX11

My installation output below:

> devtools::install()
✔  checking for file ‘/home/xxx/projects/R/packages/RFace/DESCRIPTION’ ...
─  preparing ‘RFace’:
✔  checking DESCRIPTION meta-information ...
─  cleaning src
─  checking for LF line-endings in source and make files and shell scripts
─  checking for empty or unneeded directories
   Removed empty directory ‘RFace/inst/extdata’
   Removed empty directory ‘RFace/inst’
   Removed empty directory ‘RFace/man’
─  building ‘RFace_0.1.0.tar.gz’
   
Running /usr/lib64/R/bin/R CMD INSTALL /tmp/Rtmp7mY9II/RFace_0.1.0.tar.gz --install-tests 
* installing to library ‘/home/xxx/R/x86_64-pc-linux-gnu-library/3.5’
* installing *source* package ‘RFace’ ...
** libs
clang++ -std=gnu++11 -I"/usr/include/R/" -DNDEBUG -DENABLE_ASSERTS -I"/home/xxx/R/x86_64-pc-linux-gnu-library/3.5/Rcpp/include" -I"/home/xxx/R/x86_64-pc-linux-gnu-library/3.5/dlib/include" -D_FORTIFY_SOURCE=2   -fpic  -march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong -fno-plt -c RcppExports.cpp -o RcppExports.o
clang++ -std=gnu++11 -I"/usr/include/R/" -DNDEBUG -DENABLE_ASSERTS -I"/home/xxx/R/x86_64-pc-linux-gnu-library/3.5/Rcpp/include" -I"/home/xxx/R/x86_64-pc-linux-gnu-library/3.5/dlib/include" -D_FORTIFY_SOURCE=2   -fpic  -march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong -fno-plt -c face_detection.cpp -o face_detection.o
clang++ -std=gnu++11 -shared -L/usr/lib64/R/lib -Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now -o RFace.so RcppExports.o face_detection.o -lpthread -lX11 -L/usr/lib64/R/lib -lR
installing to /home/xxx/R/x86_64-pc-linux-gnu-library/3.5/RFace/libs
** R
** byte-compile and prepare package for lazy loading
** help
No man pages found in package  ‘RFace’ 
*** installing help indices
** building package indices
** testing if installed package can be loaded
Error: package or namespace load failed for ‘RFace’ in dyn.load(file, DLLpath = DLLpath, ...):
 не могу загрузить разделяемый объект '/home/xxx/R/x86_64-pc-linux-gnu-library/3.5/RFace/libs/RFace.so':
  /home/xxx/R/x86_64-pc-linux-gnu-library/3.5/RFace/libs/RFace.so: undefined symbol: _ZN4dlib6base64D1Ev
Ошибка: загрузка не удалась
Выполнение остановлено
ERROR: loading failed
* removing ‘/home/xxx/R/x86_64-pc-linux-gnu-library/3.5/RFace’

Should I compile dlib and link with it? How can I do it using this package?

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