View Add/Edit Patient Images screen. View Video, 1 min. 43 sec.

Scanner Compression Quality Setting
You can further fine tune JPEG and PNG images by setting their degree of compression. Since bitmaps are by definition, not compressed, the Compression Quality Setting does not apply to the None (bitmap) setting. The Compression Quality Setting goes from 1% to 100%. With JPEGs, 1% gives you the lowest image quality with extreme compression and 100% gives best image quality with the least compression. Therefore, 1% will have the disadvantage of being the lowest quality image but have the advantage of being saved as the smallest possible file. Now a JPEG with a Compression Quality Setting of 100% is still a very compressed file with a small file size. It’s just that as you move the Compression Quality down from 100%, the file size gets even smaller, and correspondingly, the quality of the image deteriorates. For PNG files, the Compression Quality Setting is something of a misnomer. Remember that PNG files use a “lossless” compression method. So as you increase the compression of a PNG, it does not lose quality but it does take longer to save the file and load the file. Sluggish performance may result. So lesser “Quality” in the case of PNGs refers to lesser performance. For this reason we tend to favor JPEGs over PNGs when image compression is desired. For scanners, we recommend that you set your Compression setting to JPEG and the Quality Compression Setting be set at 100% or lower (but not so low that image quality suffers).

Scanner General and X-Ray Settings
Each TWAIN device has two setting modes: General and X-ray. Each mode maintains its own settings for Compression and Compression Quality (discussed earlier). For example, a particular TWAIN scanner can have a General setting with a Compression of “None” and therefore Compression Quality is not applicable and an X-ray setting with Compression of JPEG and Compression Quality of 80%. Each mode, General and X-Ray, will store its own values for these choices. Remember to set both the General Compression and Compression Quality as well as the X-Ray Compression and Compression Quality.

Digital Camera Setup
Digital camera setup is different from scanner setup in that most digital cameras today are not TWAIN based but Memory based devices. With a memory based digital camera you attach a USB cable from the camera to the computer, or you will plug the camera’s memory chip directly into a compatible slot in the computer. This will add a new virtual drive to your computer. This virtual drive is where your camera’s digital images can be found. The goal of Digital Camera Setup is simply to give the program the path to that virtual drive where your camera images are stored.