Memory

4.1 Introduction imshow function Spatial resolution and Quantization Image quality Image attributes 4.2 The imshow function 1) Greyscale images x : matrix of type uint8 (int bw 0 ~ 255) → imshow(x) : display x as greyscale img c : matrix of type double → (1) or (2) (1) Convert to type uint8 and then display (2) Display the matrix directly imshow(c) : display c of type double as greyscale img if ..

3.1 Greyscale images 1) imread >> w = imread('wombats.tif'); (1) w : A matrix variable (which has grey values of all the pixels in greyscale image) (2) imread : To read the pixel values from an image file, and return a matrix of all the pixel values - It ends in a semicolon ( ; ) : not displaying the result of command to screen The result of imread command is a matrix of size 256x256, or with 65..

2.1 Introduction 1) MATLAB : Data analysis and visualization tool designed with powerful support for matrices and matrix operations 2) MATLAB's standard data type : Matrix - All data are considered to be matrices of some sort - Images are matrices whose elements are the grey values (or possibly the RGB values) of its pixels - Single values are considered to be 1x1 matrices, while a string is a 1..

1.1 Images and pictures Image : a single picture which represents something 1.2 What is Image Processing Image Processing involves changing the nature of an image in order to either 1) improve its pictorial information for human interpretation, 2) render it more suitable for autonomous machine perception. Digital Image Processing involves using a computer to change the nature of a digital image ..