Lf119, Graphics: Gimp's tools: selection and color correction. Gimp's tools: selection and color correction Abstract: The Gimp is a very powerful program to create and manipulate images.
Some of its many tools allow you to make selections, and that's what this article is about. A selection is used to isolate a specific part of the image in order to change it, independent of the rest of the image. You can copy, move, replace or filter a selection, and you can also change its colors/contrast/brightness or even apply an effect to it. When we speak of color corrections, it's important to be careful with the corrections you do. This article describes Gimp's selection tools and the different ways you can handle selections, and also gives a small introduction to some color correction tools. This toolbar shows Gimp 1.0.4, a stable version.
The rectangular and the elliptic/circular selection tools. The lasso, for selecting a zone you draw by hand. The fuzzy selection tool, to select a continuous region. Some common rules for tools and selections Tweaking... Attack of the Clones! In this easy lesson, you will learn how to create an image which appears to show the same person appearing in multiple locations in a scene.
Ideally you would begin with a photo of the scene without the person in it to use as the background image. You will need at least two pictures of the same scene with the person you plan to clone appearing in a different location in each photo. Tip: For best results, set up the camera using a tripod and keep its position and settings fixed for all the photos. Download source images here: empty background | girl left | girl right | girl back Step 1. The selection needn't be precise. Step 2. Step 3. ... to properly position the clone over the background. Repeat Steps 1-3 to copy, paste, and position the person you are cloning from an image in which she appears in a different place.
Step 1 Step 2 Step 3 You now have a picture in which the same person appears in two different places! The challenge comes when one of your clones is to appear in front of another. Blending images. In this easy GIMP exercise you'll combine two images together into a nice, blended single image with two views of the same subject.
Some of the things you will do in this lesson: Create a new image of a specific sizeSelect and copy an entire imagePaste a new layer from the clipboardUse a layer mask with the Blend Tool First, grab the two source images by Annika Banfield from stock.xchng: Image A | Image B These images will be very large, so the first task is to resize the two images to a smaller easier-to-work-with size, but more importantly, so that both images are the same height, Image > Scale Image… . Create a new image, File > New…, with the same height (1200 pixels) and a width approximately equal to the sum of the widths of the two source images (2300 pixels). Select all of Image B, Select > All (or Ctrl+A). and copy it, Edit > Copy (Ctrl+C). Repeat this process with Image A, naming this layer Layer A. See a video showing how to do this. Desaturate Layer A Blur Layer A.