free barcode generator in vb.net 12: Cleaning Up Your Images in Software

Encoder Denso QR Bar Code in Software 12: Cleaning Up Your Images

CHAPTER 12: Cleaning Up Your Images
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FIGURE 12-2
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You can connect a number of images to make a wide (or tall) panoramic shot
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As I mentioned in 6, there are two steps to taking a panorama: photographing the scene and stitching the images together afterward When shooting the pictures, keep these tips in mind:
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I You ll need to take a series of pictures that overlap Try to get 30 50 percent of each
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image to overlap into the next picture to make it easier to stitch them together
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I In order to keep each image s perspective identical, you ll need to keep the camera s
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rotational axis the same In plain English, that means you need to take all the pictures from the same location Don t drift a few feet as you photograph, and take the shots on a tripod if possible
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I Avoid using a wide-angle lens, since this can distort the images and make it difficult to
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line up edges Now it s time to make the panorama There s a hard way and an easy way; which way you choose depends upon how much enthusiasm you have for delicate editing and how much money you have to spend on yet another image editing program If you re game for doing it the easy way, you need to purchase a panorama program that automates the entire process for you There are several programs around that do the stitching for you If you re interested, check out any of these:
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I I I I I
Ulead Photo Express
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ArcSoft Panorama Maker PanVue ImageAssembler Easypano Panoweaver Adobe Photoshop Elements
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How to Do Everything with Your Digital Camera
FIGURE 12-3
Automatic panorama software is a convenient way to stitch images together
Using those programs, all you need to do is drag and drop the individual images in the proper order (see Figure 12-3) The software matches the edges all by itself, and does a good job even with low-quality digital cameras, wide-angle lenses, and other technical difficulties
The Resolution Advantage
Not all panoramas are photographed just to take wide, scenic landscapes Sometimes, you might want to photograph a subject in sections so you can get more pixels for a high-res print What am I talking about Consider a situation in which you want to make a 20 30-inch poster-sized print, but your 2-megapixel camera doesn t have remotely enough resolution to make a large picture You can still get the shot, as long as you re trying to photograph a stationary object Shoot it in sections then stitch the individual segments together on the PC
CHAPTER 12: Cleaning Up Your Images
When you re done, you ll end up with a much higher-resolution image since it ll have a lot more pixels than a single photo would have
Stitching Photos Together by Hand
If you don t have an automatic stitching program, you can still make a panorama by hand It just takes a bit longer (and your results will not be quite as good as what you get from most automated software)
How to Do Everything with Your Digital Camera
Here s how to do it: 1 Calculate the finished image size by finding the size of your individual images If you don t know the resolution of the individual shots, load one into Paint Shop Pro and choose Image | Image Information from the menu Close the image after you ve determined its size
2 Create a blank document by choosing File | New For image size, make sure it is the image width times the number of images (such as 640 3 images, or 1,920 pixels) For height, make it about 50 percent bigger than the starting image height, such as 720 pixels for a 480-pixel image This gives you some room to maneuver if the images turn out to have some vertical offset, and you ll crop out the extra white space at the very end You ll want the image type to be a 24-bit image (16 million colors)
CHAPTER 12: Cleaning Up Your Images
3 Add the first image to the panorama, working from left to right An easy way to do that is to leave the Browse window open and simply drag each image, as you need it, into the new image 4 Take the next image and add it to your panorama document As you add the images, line them up with the image to their left If you use a program like Paint Shop Pro that supports layers, you can make the new image somewhat transparent to help you see where it should line up with the previous image For a quick introduction to layers, see the sidebar Combining Images with Layers
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