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Consolidating and Adding the Image Processing Functions to LIBICV | Consolidating and Adding the Image Processing Functions to LIBICV | ||
==Brief summary of Project== | ==Brief summary of Project== | ||
− | BRL-CAD has a number of image processing tools. Currently all the tools are implemented in a modular fashion where in each tool is accessed as a module. The primitive task of this project is to combine the image processing functionalities of these tools to a library. This task will ensure the | + | BRL-CAD has a number of image processing tools. Currently all the tools are implemented in a modular fashion where in each tool is accessed as a module. The primitive task of this project is to combine the image processing functionalities of these tools to a library. This task will ensure the reusability of these functionalities by the application programmer through relevant api calls in the code and thus will be useful for building a proper GUI for BRL-CAD and helpful in other new tools/functions to be added to BRL-CAD in future. |
==Project Description (Detailed)== | ==Project Description (Detailed)== | ||
===Introduction=== | ===Introduction=== | ||
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===BRL-CAD’s IPT(s) Information and Current Status=== | ===BRL-CAD’s IPT(s) Information and Current Status=== | ||
Currently these tools are implemented as standalone applications where in each tool is a separate program and separate executable are compiled through these programs. To run any tool, currently we pass command line arguments to the executable file (separate for each tool) and the return arguments are received on standard output buffers or it could be done by saving the output at | Currently these tools are implemented as standalone applications where in each tool is a separate program and separate executable are compiled through these programs. To run any tool, currently we pass command line arguments to the executable file (separate for each tool) and the return arguments are received on standard output buffers or it could be done by saving the output at | ||
− | BRL-CAD’s IPT(s) are extensively written for various Image Processing task. Apart from the other formats, it has support for the BRL-CAD pioneered '''.pix''' format and the | + | BRL-CAD’s IPT(s) are extensively written for various Image Processing task. Apart from the other formats, it has support for the BRL-CAD pioneered '''.pix''' format and the unix plots. Thus BRL-CAD cannot use any other third party library for Image Processing without altering them. Therefore work is underway in strengthening and Consolidating BRL-CAD’s image Processing Library and adding various Image Processing functionalities in it. |
===Consolidating IPT(s) under LIBICV=== | ===Consolidating IPT(s) under LIBICV=== | ||
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library lib_icv. It is possible to create our own library of function by writing the functions as subroutines and compiling them to link to a shared library. | library lib_icv. It is possible to create our own library of function by writing the functions as subroutines and compiling them to link to a shared library. | ||
− | Any | + | Any api caller just needs to include the said library and thus has access to the implemented functions of image processing. |
Among the current tools, image processing functions and there common groups will be identified which could enhance the usability of the tools. Proper Documentation will be done as discussed in later sections. | Among the current tools, image processing functions and there common groups will be identified which could enhance the usability of the tools. Proper Documentation will be done as discussed in later sections. | ||
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===Formats of Image to be supported=== | ===Formats of Image to be supported=== | ||
The current status of icv.h defines .PIX,.BW,.ALIAS,.BMP,.CI,.ORLE,.PNG,.PPM,.PS,.RLE,.SPM,.SUN,.YUV and looking at the conversion tools among the IPTs in | The current status of icv.h defines .PIX,.BW,.ALIAS,.BMP,.CI,.ORLE,.PNG,.PPM,.PS,.RLE,.SPM,.SUN,.YUV and looking at the conversion tools among the IPTs in | ||
− | src/util folder these seem to be the only | + | src/util folder these seem to be the only relavant formats for BRLCAD. Very few formats among them are currently implemented for loading and saving of the |
images. This project will create functions for loading and saving of all these formats. | images. This project will create functions for loading and saving of all these formats. | ||
===Categories of Image Processing Functions=== | ===Categories of Image Processing Functions=== | ||
On analyzing the current status of the IPTs they involve usage of the following categories of image processing functionalities. | On analyzing the current status of the IPTs they involve usage of the following categories of image processing functionalities. | ||
+ | *Crop or Rect | ||
+ | *Differences and other arithmetic operations | ||
+ | *Filters, | ||
+ | *Histograms and Equalizations | ||
+ | *Rotate | ||
+ | *Scale or Shrink | ||
+ | *Stats | ||
+ | *Thresh | ||
+ | *Interpolate | ||
+ | *Dimensions and Image Information | ||
+ | *Background | ||
+ | *Borders | ||
+ | *Fading | ||
+ | *Merge or Split | ||
+ | *Saturation | ||
+ | *Morphing | ||
− | + | In this project, I propose to add these functionalities in the icv library. | |
− | + | Further analysis will be done to identify other functionality. During the initial working stage details of these functions will | |
− | + | be worked with to identify the input and output arguments, usability and different methods to be incorporated in the functions. | |
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− | + | ===Implemnetation=== | |
− | + | The current tools present in the /src/util include usage of most of the above mentioned functionalities and the image format. The implemnetation | |
− | === | + | task will include extractings these functionalities, finding commong attributes to arrange them in common groups, improve usabiltiy and add multiple available methods. |
− | The current tools present in the /src/util include usage of most of the above mentioned functionalities and the image format. The | ||
− | task will include | ||
===Use of image containers and structures=== | ===Use of image containers and structures=== | ||
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unsigned char *data; | unsigned char *data; | ||
unsigned long flags; | unsigned long flags; | ||
− | + | }; | |
− | + | Like any other image processing library there will be a need of containers to keep the points, arrays etc. No, judgement is made at this stage about these | |
− | Like any other image processing library there will be a need of containers to keep the points, arrays etc. No, | ||
structures. In the working schedule special time is devoted for this purpose. On discussion with the mentors and other developers decision will be taken | structures. In the working schedule special time is devoted for this purpose. On discussion with the mentors and other developers decision will be taken | ||
− | about deciding the image container and other structures needed for this library. | + | about deciding the image container and other structures needed for this library. |
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==Sample Codes and Tools== | ==Sample Codes and Tools== | ||
*Code Patch (A code containing functions to load .png, .bw and .pix files). https://sourceforge.net/p/brlcad/patches/176/ | *Code Patch (A code containing functions to load .png, .bw and .pix files). https://sourceforge.net/p/brlcad/patches/176/ | ||
*Tools of Image Processing in /src/util. | *Tools of Image Processing in /src/util. | ||
*gprof for Performance Analysis | *gprof for Performance Analysis | ||
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==Documentation== | ==Documentation== | ||
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*Witting Documentation of all the structures included. PDF+Wiki | *Witting Documentation of all the structures included. PDF+Wiki | ||
*Creating Patches all together. | *Creating Patches all together. | ||
− | ====July 1 - | + | ====July 1 - July 15 [~2 Week]==== |
+ | *Implimentation of Import/Export Modules. | ||
+ | *Testing these Modules. | ||
+ | *Documentation of these modules. | ||
+ | ====July 16 - Sep 2 [~7 Week]==== | ||
*Implementation of image processing functionalities focusing on categories identified during project analysis period. | *Implementation of image processing functionalities focusing on categories identified during project analysis period. | ||
*Enough Time is allotted to this to follow up the implementation as decided during analysis step. | *Enough Time is allotted to this to follow up the implementation as decided during analysis step. | ||
*Implementation of 3-4 functions a week which includes unit-level testing and code coverage. | *Implementation of 3-4 functions a week which includes unit-level testing and code coverage. | ||
*Documentation of the functions including input output arguments/methods etc. | *Documentation of the functions including input output arguments/methods etc. | ||
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===Sep 2 - Sep 27 (Final Wrap UP and Cleaning)=== | ===Sep 2 - Sep 27 (Final Wrap UP and Cleaning)=== | ||
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==Why BRL-CAD?== | ==Why BRL-CAD?== | ||
In my final year at the university, I am due to work on my Under Graduate thesis. As per my background, my university has assigned me a faculty dealing in graphics and Image Processing. | In my final year at the university, I am due to work on my Under Graduate thesis. As per my background, my university has assigned me a faculty dealing in graphics and Image Processing. | ||
− | This motivates me to | + | This motivates me to utilise my summer holidays working with BRLCAD due to their large codebase dealing with Image Processing and Graphics and thus becoming a regular contributor with it in my final year which would help me to complete my thesis. |
==Why you?== | ==Why you?== | ||
I am good in c, c++. I will not say that I possess excellent coding skills. But I have enough to work on this project. Besides this I am dedicated and have an inquisitiveness to learn new things. | I am good in c, c++. I will not say that I possess excellent coding skills. But I have enough to work on this project. Besides this I am dedicated and have an inquisitiveness to learn new things. |