Digital Images What to do with all those pictures.

Who is this for? This presentation is for those of us who own a digital camera, have taken lots of pictures and have folders and folders of them on our computers. I will attempt to: Show you how to dress them up Help you organize them Show you how to make them work for you

Image Files and their Formats: TIF or TIFF is "Tagged Image File Format". PNG is “Portable Network Graphics” GIF, is “Graphics Interchange Format” BMP is “BitMaP” JPEG or JPG is “Joint Photographic Experts Group”, (the original name of the committee that wrote the standard.) Jpeg is easily the most common one used today. More advanced cameras will let you have access to the ‘raw’ image file.

Free Software ! I will be showing you editing techniques using the program Paint.Net Dressing them up (borders and labels) Picture within a picture Resizing

Paint.Net

Borders and Labels!

Open your picture

Set your background color. Picture shows black foreground and white background, you can swap them with the double ended arrow.

From the Image menu: Choose ‘Canvas Size’ Increase the canvas sizes by entering a number greater than 100 thus creating a border. You can change which borders get increased by changing the placement of the picture.

So this:

Becomes this: I used white first, then made a second border of black.

Adding Text !

To place text on the picture. Set your foreground/text color Then click on the text tool. Place the text tool cursor where you want the text to begin.

Pointing out parts of your pictures!

Open your picture

Choose the ellipse select tool. Select the area to showcase. (hold shift to maintain a perfect circle) “Copy” this by pressing Or by choosing copy from the edit menu

Paste the copied section in to the picture by pressing or choosing “paste” from the edit menu This tool should be chosen for you automatically after pasting, you can click inside the selected area and drag the pasted section to the location you want it to be.

Move the cursor to one of the corners. ( it will become a hand) Grab the corner by clicking and holding. Now drag the corner until the picture is the size you wish. You may move the selection at any time, like in the previous step. Next “De-select” by choosing is from the menu (you want the moving dashed lines to go away)

Using the Ellipse Tool draw a circle around the area you enlarged on the original photo. Then draw, lines connecting the two circles.

And there.

Resizing Why resize your pictures? You could be: putting them on the internet or ing them. reducing storage space needed. merging them with other pictures in a collage. ___________________________ setting the print size (i.e. 3x5 or 8x10) for printing at home.

Choose the Picture to resize.

From the image menu choose ‘resize’. This software allows you to change the size of your image 3 ways: By a percentage Reducing pixels dictating the dimensions We will compare the three here.

50% Best Quality

Reduced Pixels numbers by half

Reduced Pixels numbers by half but set resolution at 144

Reduced Measurement numbers by half

Side by side

There was no real reduction in memory by cutting the picture in half. 1.7 Mb to 1.51 Mb So I decided to shrink the image even smaller.

25% Best Quality

One fourth pixels

One fourth pixels with 144 resolution.

One fourth Measurements

ResolutionPixelsInchesMemory size Original x x Mb percent x x Kb Pixels x x Kb Measurements x x Kb

There seems to be no real difference in the methods of decreasing image size and the resultant picture quality. So I tried different re-sampling methods.

25% Best Quality

25% - Bicubic

25% - Bilinear

25% - Nearest Neighbor

Side by side

25% ResolutionPixelsInchesMemory size Best Quality x x Kb Bicubic x x Kb Bilinear x x Kb Nearest Neighbor x x Kb

25% ResolutionPixelsInchesMemory size Best Quality x x Kb Bicubic x x Kb Bilinear x x Kb Nearest Neighbor x x Kb

The finished product at 1/3 the memory consumption.

Other Helpful Software XnView - www. xnview.com/ - XnView is free software to view, organize, convert graphics files. Picasa Picasa is free software to view, organize, and edit graphics files.

Sources: photo_formats.htm#TIF