MATLAB Basics and Image Processing Toolbox

Study Notes

MATLAB is a programming language and interactive environment for numerical computation, visualization, and algorithm development.
The experiment demonstrates basic operations such as addition, subtraction, multiplication, division, and modulo using MATLAB's disp command.
Variables are declared and assigned values, illustrating how MATLAB handles numerical calculations and assigns the results to variables.

The Image Processing Toolbox is a toolbox within MATLAB that offers a comprehensive set of functions for image processing, analysis, and visualization.
The experiment is about reading, writing, displaying, and converting image formats with the use of the toolbox.
imread reads an image from a file, assigning its data to a variable.
imshow displays the image on the screen, providing a visual representation.
title adds a title, making the image more informative.
The experiment illustrates how to perform simple image processing tasks and display results within MATLAB's environment.
imwrite saves the modified image to a new file for later use.

The experiment focuses on how to extract information about individual pixels and specific regions of the image.
photo(50,50,:); retrieves pixel information at row 50, column 50, and all color channels.
This shows how individual pixels are identified and accessed for analysis.
The use of photo(60:120,80:100); extracts a subset of the image, creating a rectangular region for further processing.
It allows analyzing specific areas of the image or performing specialized operations on those regions.

The experiment shows how to read images from files and write them to the disk.
imread reads an image from a specified file, loading its data into a variable for processing.
imwrite saves the processed or modified image to a new file, allowing for further use or sharing.

imshow is used to display images within the MATLAB environment, providing a visual representation of the image data.
Images can be displayed in a variety of ways, including individually or in a tiled arrangement using subplot for comparison and analysis.

This experiment demonstrates how to convert images between different formats, such as jpeg to png, and how to separate color channels.
imresize changes the size of an image, scaling it by a specified factor or to specific dimensions.
The experiment highlights the ability to manipulate and adjust images to specific requirements or analytical needs.
The experiment covers converting image types by using im2double and im2uint8.

imresize method is used to resize images by a specified factor.
The experiment showcases the ability to manipulate image dimensions for a variety of purposes.
Images can be resized to adjust for display, reduce storage space, or prepare them for specific processing techniques.
saveas is used to save an image that has been resized, and it can save in a variety of formats.