Most assuredly they cannot be as rapidly indexed and accessed as a computer file. In addition, digitized images can be transmitted by modem or Internet to other physicians. It can also be reproduced on CD-ROM or DVD for CME and other educational purposes. Second, having endoscopic images in digital form permits many novel manipulation techniques. Images can be reprocessed, enhanced or analyzed.
Video is an analog, electronic, visual interpretation of our surroundings.
The pixels are arranged in multiple horizontal lines in a pattern that when put together is what we see on the screen as an image. This is called a frame. Perhaps the most essential component in a video capture system is the video capture card. Two models in particular are worth mentioning as excellent buys for professional and novice alike. Older video capture cards are still sold, often at significant discount, but a beginner in DTV should avoid them.