Assignment #2

Due to: Fr. Sept. 26th (Same Date as Assignment 1 !)
Score: 5 points The programs must be sent to the TA as MATLAB-scripts.

Load the 'bear' - grayvalue image and create 50 noisy versions adding random values (using the MATLAB 'rand' function)
Average the noisy versions to a new image, show the result
Show the error between the original (without noise) image and the averaged image by creating the (enhanced) difference
Show the process of image averaging as a movie, showing in frame n the average of the first n noisy images, n=1:50

we'll talk about creating movies in the class and/or lab.

Here's the image you should use:

(download this image with explorer: right click, save target as...)
Score: 3 points

Load the picture below
Create the histogram (try to find a MATLAB function that is helpful, using the 'lookfor histogram' command)
Take a look at the histogram and decide a good threshold to create a binary (black/white) image
Create and show a binary image using your threshold

Is it a good idea to use a global threshold ? How could the algorithm be improved ?

Score: 2 points

Have fun !