We hadn’t had access to the images for many years.”Īfter the slides were scanned, however, a whole set of faded memories resurfaced for the family. The bulb for the slide projector went out a long time ago, and then the projector itself stopped working. “Before I sent in those 650 slides for scanning, none of us had really had a chance to view them all together. As she described it, there had been no easy way to get to those images until that point: One customer recently sent us a moving account of how she decided to get a box of old slides digitized and in the process, uncovered several photos of a father who passed away when she was only four. Compression rates of 10:1 or 20:1 yield little degradation in image quality.Some of the most heartwarming stories we get to hear in the photo scanning business come from customers who have recently had their photographic slides digitized.Īt one point in the pre-digital era, slides represented the most common way to capture memories.īut since most people, these days don’t have access to a projector for viewing them, the memories in them often stay boxed and buried. Compression rates of 100:1 can be achieved, although the loss is noticeable at that level. JPEG involves a lossy compression mechanism using discrete cosine transform (DCT).
JPEG is a joint standard of the International Telecommunications Union (ITU-T T.81) and the International Organization for Standardization (ISO 10918-1). JPG is a graphical file format for editing still images, it offers a symmetrical compression technique which is processor intensive and time consiming in both compression and decompression. The JPG file is a great format as it often manages to compress files to 1/10 of the size of the original file which is especially good for saving on bandwidth. The JPG format is often used in digital camera memory cards. The resultant 'lossy' file means that quality can never be recovered. JPG's are often used for web sites and email as they are generally smaller file sizes as they are lossy meaning that some image quality is lost when the JPG is compressed and saved.
These can be animated in a variety of ways. Entrance, emphasis, and exit of elements on a slide itself are controlled by what PowerPoint calls Custom Animations Transitions.
Many businesses and students that have to present something will almost always do their presentation using Microsoft PowerPoint.Ī large part of any presentation is how the text enters, appears and exits the screen. It is a very powerful tool that you can use to create presentations that include pictures, graphs, text and many other objects.
Originally developed by Forethought, who Microsoft bought out, PPT is the worlds most popular presentation file format.
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