image-interpolation-processing

A minimalist Matlab implementation of the image basic processign functions like: rotating an image and scaling an image. The project works for both greyscaled images and RBG images. Project tries to solve those problems using 3 different interpolation methods "proximal", "bicubic" and "lanczos"

Table of Contents

1. Getting Started
2. Using Project
3. Testing

Getting Started

Project "image-interpolation-processing" is a small api to process any type of images and to perfom som ebasic functions like rotating or scaling. The most interesnting think is that if we perform an action on a white-black image we can perform the same action on a RGB image, however we should make an action on every color channel considering every channel as a white-black image.

For this project you have 3 interpolations that will help us to perform those operations:

• Proximal Interpolation
• Bicubic Interpolation
• Lanczos Interpolation

For every type of interpolation exists a folder with all helper and main functions to perform above functions

Using Project

In order to use a function for example the bicubic resize of one image, you should:

• Read the image into the system with imread
• Send the image with other params in the specific function
• After that as an result you will get an image (greyscaled or RGB)
• After receving the image you should write on disk with imwrite

Example of executing one function:

    >> img = imread("path\\to\\file\\image.ext");
    >> img = bicubic_resize_rgb(img, 2000, 4000); % Can pass another new sizes
    >> imwrite(img, "path\\to\\savefile\\new_image.ext");

Other functions for different interpolations works the same.

Testing

In order to tast some examples how they work and what the project does in a nutshell you first have to check that:

• You do not run the code in MATLAB, but you run it in OCTAVE.
• You have to be in the folder of the interpolation that you want to check

For example to test proximal interpolation you should run:

    >> check_proximal();

After that some messages with what tests are passed and what test are not passed (depends of you system)

Have fun coding