===============================================================================
            Object-based Iterative Spanning Forest (OISF)

        Felipe C. Belém, Silvio J. F. Guimarães and Alexandre X. Falcão
===============================================================================

This is an implementation of the Object-based Iterative Spanning Forest (OISF)
framework. By providing an object saliency map, OISF delineates the objects 
effectively whilst provides inumerous different segmentations (for the same
quantity of superpixels) to better adapt it for a given application (e.g.,
semantic segmentation and image compression). The user has the ability to control
the quantity, the displacement and the boundary adherence (considering the color
space or the saliency one) of the superpixels.

1) Papers & Citation:
    This work was published at... 
        [1] - https://ieeexplore.ieee.org/document/8919941
        [2] - https://link.springer.com/chapter/10.1007%2F978-3-030-13469-3_39
        [3] - https://sol.sbc.org.br/index.php/sibgrapi_estendido/article/view/12979
        [4] - http://repositorio.unicamp.br/jspui/handle/REPOSIP/345378
    ...and if you're interested in using our code, we appreciate if you cite one of these works (especially, [2] and [4]) in your project.

2) Languages Supported:
    C/C++ (Implementation)

3) Compiling & Cleaning:
    In order to compile the necessary files for executing in C environment, one can execute the following rules...
        make    
        make all
    For removing all generated files from source (excluding and including the external libraries), simply run, respectively:
        make clean
        make remove
    Finally, for compiling each demo (either iftOISF_OGRID or iftOISF_OSMOX), one can execute the following rule:
        make demo/<demo_name_sans_ext>

4) Running:
    In this folder, there are two demo files, one for each OISF variant (i.e., OISF-OGRID and OISF-OSMOX). After compiling and assuring the generation of the necessary files, one can execute each demo for more details on its parameters. Alternatively, one can execute with the parameter "--help" for the same information. As an example, for a terminal located at this folder, one can run the following command:
        ./bin/iftOISF_OSMOX --img=input_img.png --objsm=saliency_map.png --k=200 --labels=segmentation.pgm --ovlay=overlayed_borders.ppm

5) Hardware & Requirements:
    This code was implemented and evaluated in computers with the following 
    specifications:
        Acer Chromebook C720P
        Order: Little-Endian
        OS: GalliumOS v4.16.18 x86_64
        CPU: 4x Dual-core Intel(R) Core(TM) i3-4005U CPU @ 1.70GHz
        Memory: 4GB RAM ; 32GB SSD

        Gigabyte Technology H170M-D3H
        Order: Little-Endian
        OS: Ubuntu v4.15.0 x86_64
        CPU: 8x Quad-core Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz
        Memory: 64GB RAM ; 1TB SSD

    Moreover, it was compiled and executed using the following programs:
        GNU Make: v4.1
        GNU GCC: v5.4.0 v7.5.0

    Therefore, it is >>>NOT<<< guaranteed that this code will compile/execute properly in any
    other operational system (e.g., Windows and MacOS) or programs (e.g., MinGW and Clang).

6) License:
    This code is licensed under Open Software License ("OSL") v.3.0. Please, see LICENSE for
    more details.

7) Acknowledgments
    This work was developed during Felipe's M.Sc. and Ph.D. studies at the University of Campinas (UNICAMP), in São Paulo, Brazil, with the cooperation of the Pontifical Catholic University of Minas Gerais (PUC-MG), in Minas Gerais, Brazil. Moreover, it was financially supported by CNPq, FAPESP, FAPEMIG and CAPES --- all brazilian research funding agencies.

9) Contact:
    Please, feel free to contact the authors for any unexpected behavior you might face (e.g., bugs):
        Felipe C. Belém: [email protected]
        Silvio J. F. Guimarães: [email protected]
        Alexandre X. Falcão: [email protected]