

## OpenImageR 1.1.7

* I fixed an error in the *'equal_spaced'* version of the *crop_image_secondary()* function
* I fixed invalid URL's (both in R scripts and vignettes)
* I added the *superpixel_bbox()* function which returns the bounding box boundaries for the superpixels
* I added the *superpixel_bbox_subset()* function which returns the bounding box boundaries of a subset of superpixels
* I added the *padding()* function, which allows a user to pad / extend a matrix or array using a specified value


## OpenImageR 1.1.6

* I renamed the *load_3d_binary* to *load_binary* and now a user can load either a 2- or a 3-dimensional object. I also fixed a bug in the function.
* I modified the *superpixels* function, so that it can take 2-dimensional objects too (matrices) besides 3-dimensional images (no need to convert to 3-dimensional outside of the function).
* I added the parameter *vectorize_magnitude* to the *gabor_feature_extraction* method of the *GaborFeatureExtract* R6 class. In case that the *vectorize_magnitude* parameter is set to FALSE the user will receive the magnitude in form of a matrix ( for instance if the *scales* parameter is set to 2 and the (rows, cols) of the image are (128, 128) then the resulted magnitude will be a list of length 2 where each sublist will be a matrix with dimensions (128, 128) (pixel-wise magnitude values) )
* I modified the *meshgrid_x()* and *meshgrid_y()* Rcpp functions and now they return faster as before
* I modified the check-input-data-cases for the *RGB_to_Lab* and *RGB_to_HSV*
* I fixed the *"failure: the condition has length > 1"* CRAN error which appeared mainly due to the misuse of the base *class()* function in multiple code snippets in the package (for more info on this matter see: https://developer.r-project.org/Blog/public/2019/11/09/when-you-think-class.-think-again/index.html)


## OpenImageR 1.1.5

* I renamed the internal function *norm_range_gauss* to *norm_matrix_range*. Now, the *norm_matrix_range* function is accessible when loading the OpenImageR package. Moreover, I excluded rounding [ round() ], which occured by default in the *norm_range_gauss* function.


## OpenImageR 1.1.4

* I fixed the duplicated vignette title warning


## OpenImageR 1.1.3

* I fixed a documentation error as suggested in [issue 11](https://github.com/mlampros/OpenImageR/issues/11) of the OpenImageR Github repository (converted radians to degrees in all scripts of the OpenImageR package).


## OpenImageR 1.1.2

* I converted the OpenImageR package to a header-only package, so that Rcpp functions can be called from another R package.
* I added the *SLIC* and *SLICO* superpixel algorithms as header files and as a function (*superpixels()*) which can be called from within R.
* I added the *load_3d_binary()* function in case that a user intends to load 3d-image data from a binary file (as is the case when a user writes data when using the *superpixels()* function).
* I added the RGB (Red-Green-Blue) to LAB (Lightness, A-colour-dimension, B-colour-dimension) colour conversion (*RGB_to_Lab()*).
* I added the RGB (Red-Green-Blue) to HSV (Hue, Saturation, Value) colour conversion (*RGB_to_HSV()*).
* I added the vignette "Image_segmentation_superpixels_clustering.Rmd"


## OpenImageR 1.1.1

* I modified the *rotate_nearest_bilinear* Rcpp function in the *utils.cpp* file to fix the ASAN-gcc error.


## OpenImageR 1.1.0

* I fixed the ASAN-gcc error.
* I commented 3 test cases for the Solaris OS, otherwise it gives an error (see the comments in the *test-gabor.R* tests file).
* I updated the Vignette *Gabor Feature extraction*.


## OpenImageR 1.0.9

I added the *GaborFeatureExtract* R6 class, which as the name suggests extracts Gabor features from images (I updated the documentation and Vignettes too)


## OpenImageR 1.0.8

I added the *DARMA_64BIT_WORD* flag in the Makevars file to allow the package processing big datasets


## OpenImageR 1.0.7

I removed the *threads* parameter from the *Augmentation* function as there is no significant improvement (in execution speed) between a threaded and a non-threaded version.
I modified the *OpenMP* clauses of the .cpp files to address the ASAN errors.


## OpenImageR 1.0.6

I fixed a bug in the *translation_mat* function of the *utils.cpp* source file (https://github.com/mlampros/OpenImageR/issues/6 and https://github.com/mlampros/OpenImageR/issues/7). Moreover, I added the *padded_value* parameter in the *translation* and *Augmentation* R functions to allow the user to adjust the shifted values ( in case that *shift_rows* or *shift_cols* is not 0 ). The *padded_value* parameter can take either a numeric value or a numeric vector depending on the dimensions of the image. Previously, the shifted values were replaced by default with 0.


## OpenImageR 1.0.5

I fixed a bug in the *dhash* function according to the [Changelog](https://github.com/JohannesBuchner/imagehash) of the imagehash python library. Moreover, I added a function to round float numbers in the *image_hashing.cpp* source file, otherwise by creating hash values using the *bilinear* interpolation method the returned values are incorrect.


## OpenImageR 1.0.4

I modified the R script files to accept extension types similar to .tiff such as .tif, .TIFF or .TIF


## OpenImageR 1.0.3

I modified the Augmentation function to correct an issue which occured due to the zca_comps parameter


## OpenImageR 1.0.2

I did OpenMP optional for all cpp files due to the fact that the OSX OS does not currently support openMP ( r-devel-osx-x86_64-clang )


I removed the floor() function from the lines 45, 46 of the hog_features.cpp, because otherwise Solaris OS throws the following error:

* error: call of overloaded ‘floor(int)’ is ambiguous


I can not fix the following error in the hog_features.cpp file for the r-oldrel-windows platform as it has either to do with the RcppArmadillo version or is GCC specific,

* error: could not convert '{{-0x00000000000000001, 0, 1}, {-0x00000000000000002, 0, 2}, {-0x00000000000000001, 0, 1}}' from '<brace-enclosed initializer list>' to 'arma::mat {aka arma::Mat<double>}'

Platforms, which support newer versions of GCC (GCC >= 4.9.0) and a recent version of RcppArmadillo (>= 0.7)  do not throw such an error.


## OpenImageR 1.0.1

I modified the Makevars files, so that OpenImageR can be installed error-free in the following OS's,

* r-devel-osx-x86_64-clang
* r-patched-solaris-sparc
* r-patched-solaris-x86
* r-oldrel-windows-ix86+x86_64


## OpenImageR 1.0.0

