Beginning Digital Image Processing: Using Free Tools for by Sebastian Montabone

By Sebastian Montabone

Because the creation of electronic images, we have now been capable of post-process our photographs. despite the fact that, to do it accurately, we need to develop into electronic artwork apprentices. Sebastian Montabone is a working laptop or computer imaginative and prescient specialist who wishes us to exploit our cameras and picture processing software program to come back up with artistic endeavors. during this publication, he teaches photo processing suggestions of ascending hassle according to freely to be had instruments. The booklet teaches you to take advantage of the simplest instruments for the task, and it makes a speciality of the options, no longer the environments or toolchains within which they run. additionally during this ebook, you are going to find out about the Canon Hack improvement equipment (CHDK), which expands the positive factors of a few cameras.What youll learnLearn how you can strategy your photographs via example.Save cash through the use of loose instruments rather than pricey advertisement software.Create unimaginable high-dynamic diversity (HDR) pictures.Generate attractive panoramas from usual pictures.Use the Canon Hack improvement equipment (CHDK) to extend your digicam features.Make video clips and edit them simply utilizing unfastened software.Who this publication is for This ebook is for a person who's attracted to images, snapshot processing, or loose snapshot modifying software program, with out exceptions.

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GIF GIF stands for Graphics Interchange Format. It can store a depth of color of only 8 bits (256 colors). It handles transparency in a very basic form (each pixel is either transparent or not). The main advantage 44 CHAPTER 2  DIGITAL IMAGES of this file format is that it can be used to save animations. Also, because it is an old format, it is very compatible with old versions of web browsers and other software. It uses lossless compression. This format has been used mostly for displaying graphics and animations on web pages.

It supports a color depth of up to 48 bits (16 bits per channel) and also supports transparency. Because all of its options, it is suitable for professional digital photography, especially for archiving and printing. OpenEXR This format is an open standard for describing high dynamic range images (HDR). The file extension that it uses is EXR. You can use it with lossy or lossless compression. It was created and actively used by Industrial Light & Magic on motion pictures. There is a publicly available library for reading and writing images in this format.

Also, the distances between the objects seem much larger than before. You can obtain an interesting effect by changing the focal length and location of the camera so that the target object fills the same area in the viewfinder on each image. In Figures 1-18 through 1-21, note how the foreground object remains roughly the same size and position while the background gets larger on each picture. The effect is more noticeable when the objects are far away like the trees in this example. Using this technique, you can change how the background will appear in the scene without changing the size of the foreground object.

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