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

By Sebastian Montabone

Because the creation of electronic images, now we have been in a position to post-process our images. in spite of the fact that, to do it competently, we need to develop into electronic paintings apprentices. Sebastian Montabone is a working laptop or computer imaginative and prescient professional who wishes us to take advantage of our cameras and picture processing software program to return up with artworks. during this ebook, he teaches snapshot processing innovations of ascending hassle according to freely to be had instruments. The e-book teaches you to take advantage of the simplest instruments for the activity, and it makes a speciality of the suggestions, no longer the environments or toolchains during which they run. additionally during this booklet, you are going to find out about the Canon Hack improvement equipment (CHDK), which expands the beneficial properties of a few cameras.What youll learnLearn the best way to approach your pictures via example.Save cash through the use of unfastened instruments rather than pricey advertisement software.Create incredible high-dynamic diversity (HDR) pictures.Generate beautiful panoramas from usual pictures.Use the Canon Hack improvement equipment (CHDK) to extend your digital camera features.Make movies and edit them simply utilizing unfastened software.Who this publication is for This e-book is for a person who's drawn to images, picture processing, or loose photo modifying software program, without exceptions.

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Understanding what a digital image is will help you to get better results while you are working in your digital darkroom. Vector Images vs. Raster Images A digital image is a set of bits (zeroes and ones) that represents an image. That set of bits is created following a specific digital image format so that different programs can understand it. There are two main categories of digital images; one of them is called vector images and the other, raster images. Vector images are formed using mathematical equations such as lines, points, polygons, and others.

Inside the camera, the sensor awaits the incoming light with a predefined sensitivity. With these three controls, you can tell the camera how much light you want to capture. If you capture too much light, your photo will be entirely white, and if you don’t capture enough light, your image will be black. Also, each control affects how the image will look if you change it. I will describe now these three controls, starting with shutter speed because it is the simpler to understand. 23 CHAPTER 1  DIGITAL PHOTOGRAPHY Shutter Speed The term shutter speed refers to the amount of time that the camera gathers light.

Figure 2-2. This image shows a photograph with a tiny resolution of 6 × 4 pixels. The resolution is so low that you can actually count the pixels in the image. At this resolution, the image looks so bad that the contents of the photo cannot be distinguished. 33 CHAPTER 2  DIGITAL IMAGES Figure 2-3. Here, a resolution of 28 × 21 was used. At this resolution, very little detail is shown; you can only tell that there is some kind of light object on a darker background. 34 CHAPTER 2  DIGITAL IMAGES Figure 2-4.

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