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Review the scanning techniques graphics professionals and photographers use, while delving into workflow considerations and the advanced image-quality controls available in most scanning software. Author Taz Tally explains the core concepts, such as how resolution and interpolation affect scans; introduces the industry-standard SilverFast scanning software; and shares the settings to achieve the best results from a scan. The course also covers keeping your scanner and its parts clean and free of dust, and includes a variety of start-to-finish scanning tasks.
In this movie I'd like to discuss which kinds of images we're going to convert and edit as pixels and which kinds of images we're going to convert and edit as vectors. In the previous movie we talked about the fundamental differences between Pixels and Vector-based images. If you have any questions about that go ahead and refer to the previous movie. Here we're going to move on and look at a couple of different kinds of images and see which ones lend themselves best to saving as vectors and editing as vectors and which one to saving and editing as pixels. Let's start with the bicycle image that we used in the previous movie, I am going to zoom in here and just as a quick review I am going to zoom in on that edge remember Pixel-based images are made up of pixels.
Whereas and let's move over to Illustrator and the Vector-based images are made up of edges, where you don't have any of that stair-stepping. You can see the quality difference alone just looking at this. In the previous movie we discussed how the more you edit a Pixel-based image particularly, dimensionally scale, skew and rotate the lower the quality that edge gets. When we're working in Pixel-based images if we know we're going to be doing a lot of editing we know that edge quality is going to be degraded, whereas, if we have that same kind of image and we're working in a Vector-based image we know that we can edit that image to our hearts the light and the edge quality is going to remain the same.
Now notice with this bicycle-based image this image is defined by the edge, so if we have edge-based images in typically logo, line art, type that simple then it's going to behoove us to convert it into vectors and then to our editing, because then we're not going to have any degradation of our image. On the other hand if we have an image like this Moose that we see here, this is also a line art image, but it's a detailed line art image, and notice as we zoom in here we see lots and lots of detail. If you can imagine and try to convert this into a Vector, couple of things would happen. One is, the very detailed nature that you see in this image would be lost, because everything would be converted into vectors.
Secondly, it would be enormously complex who achieves the basic nature of the image. Let's take a look at another kind of image that has detail, a continuous tone image. Here is a picture of my buddy Zip, and as we zoom in on a Pixel-based image we see a lot of detail there as well. And here we begin to see a real fundamental difference between the kind of images we want to capture and save as Pixel-based images and edit them as pixels and those we want to capture as pixels as we have to in the scan and convert to vectors. If our image has a lot of detail in it we're going capture it as pixels and keep it that way.
If the image on the other hand is an edge -based image such as our bicycle, we're going to capture it as pixels because that's the way a scanner works and then we're going to convert it to vectors before we do any editing to it.
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