Image processing steps. Inputting Photographs Input devices get photographs or other data into a computer system. The input device you're probably most familiar with is the keyboard. However, there are hundreds of other input devices including mice, touch pads, voice recognition systems, scanners, and so on. Film cameras capture photographs on slides, negatives, or prints which you can then scan to convert them to digital photographs.
Video cameras capture images in a video format.
You can then use a frame grabber to isolate out individual frames and save them as still images. Digital video cameras sometimes are able to capture still images just like a digital still camera does. You can also use a video-editing card to extract still images from the digital video. Digital cameras are the easiest way to get images in a digital format because there is no conversion process required. Courtesy of Olympus .