Pixel Calculator Activities

Here is an example of a digital image stored on a computer. It is a computerized picture of Mt. Rainier, the tallest mountain in Washington state.

A digital image is really just a sequence of tiny square color regions known as pixels. If you could look at a digital image through a magnifying glass, you might see something that looks like this:

We're going to use a computer program, called the Pixel Calculator, to take a look at the pixels in some images.

	Start the Pixel Calculator by double clicking on its icon.

Now we're going to open up a file in the Pixel Calculator.

	Select the File menu, and under that click on Get Image.

A dialog box will come up on the screen that looks like this:

	Find the file mountain.bmp in the list box on the left, then click on it. 
	Now press the OK button.

	Select the File menu, and under that click on Get Image.
	Pick a file name that looks interesting, the click on it.
	Now press the OK button.

Do this a few times until you find an image that you want to work with

What is the file name of the picture you chose?