One time while we were in a store, my sister and I saw a Crayola product that let you turn your digital photos into coloring sheets. You don’t have to buy anything in order to do this. It is a simple process that only requires downloading some free software.
You Will Need:
Your Digital Photo(s)
Download Inkscape. Do this by going to http://inkscape.org/ and clicking on the gray box on the left that says “download.” If the page changes, search the page for the word “download.” The software is available for Windows, Mac, and Linux.
Start Inkscape by finding it in your programs and clicking or double-clicking the icon or link depending on your computer’s settings.
Open your digital photo in Inkscape by going to “File” and then “Open” in the program. Find the location of your digital photo and double-click it to open the file. If Inkscape asks you to link or embed the photo, choose “embed,” and press “OK.”
Make the outline of the image by selecting the photo by clicking on it. Then go to “Path” and then to “Trace Bitmap” in Inkscape. A box will pop up with different options. Make sure that the radio button next to “Edge Detection” is selected. In the box that says, “threshold” directly across from “Edge Detection,” select all the numbers and then type 0.650. Push the button that says “Update.” After you’ve pushed the button that says “Update,” push the button that says “OK.” Now close the window that popped up when you asked the program to trace bitmap. Press the tab key and then press the delete key. You will be left with a coloring sheet.
Save the coloring sheet by going to “File” and then “Save As.” Go to the folder where you want your coloring sheet saved and then type in the name you want to give your coloring sheet, making sure that you also select the file type of the picture that you want to save. If you want to make sure that the newly made coloring sheet can be posted on the Internet and sent in e-mail, save the image as a PNG by selecting “Cairo PNG” in the box next to the text that says “Save as type.”
Print and/or share your coloring page by uploading to a web server, sharing on Facebook, or sending e-mails to your friends and relatives.
You can see an example of an original photo here and the coloring page made here. This process does not work well for dark photos.