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Teachers' toolkit for creating and re-purposing OER using FOSS/Image and animation OER (view source)
Revision as of 11:21, 28 February 2017
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You should also create a drawing on an issue connected to your topic. One possibility is you could use any image you found as a reference, and draw it using Tux Paint.<br>
You should also create a drawing on an issue connected to your topic. One possibility is you could use any image you found as a reference, and draw it using Tux Paint.<br>
=== Creating image resources using a screen capture tool (Screenshot) ===
[[File:COL_-_Creating_an_image_using_Screenshot_-_select_area.png|thumb|450x450px|Creating an image using Screenshot (select area to grab)]]One of the simplest and yet very powerful ways of creating an image is to simply take a picture of your computer screen. You may have opened a web page on which there is an image or some text you want to store as an image, or it may be from a file on your computer, or it may be a snapshot of a video you are playing.
You can use the tool Screenshot for this. Open Screenshot on your computer, through <u>Applications → Accessories → Screenshot</u>
You have an option of capturing the entire display on your screen or selecting a smaller area. For the latter option, chose ‘select area to grab’, as shown in the image. Then use your mouse to drag drop the (rectangular) area you want to capture. (Move your cursor to the left top of the area, keep your left mouse click pressed, move the cursor to the right bottom point and release it).
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You can thus easily create an image OER using Screenshot of an image from your computer or the web. As mentioned earlier, taking a photo of a copyrighted material (such as a photo), is a violation of the copyright law, with exception given for ‘fair use’.
=== Creating a simple animation (''Tux Paint'') ===
=== Creating a simple animation (''Tux Paint'') ===
Tux Paint allows you to create simple animations by letting you create a slide presentation of a set of images. You can save the image you drew. Make small changes to it and save it as a new file. You can then ‘play’ the two photos in a recurring manner to create a simple animation. Your animation can have as many images as you like.
Tux Paint allows you to create simple animations by letting you create a slide presentation of a set of images. You can save the image you drew. Make small changes to it and save it as a new file. You can then ‘play’ the two photos in a recurring manner to create a simple animation. Your animation can have as many images as you like.
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=== Creating and editing image resources using an Image editor (''GIMP'') ===
Whether we capture using camera or an application called TuxPaint or Screenshot, the images have been captured digitally based on the resolution of the computer or mobile screen; this is indicated in terms of pixels. Such images are called raster images and they are dependent on the resolution of the device for their quality. All raster images are those that involve capturing some underlying image or object using various devices. For more information on raster images, see [https://en.wikipedia.org/wiki/Raster_graphics here]. GNU Image Manipulation Program (GIMP) is an image editing software, that can edit and compile raster images. There is another kind of digital image called the [https://en.wikipedia.org/wiki/Vector_graphics vector] which is not discussed in the toolkit. Vector images involve creating drawings based on defined mathematical shapes; this can be defined in terms of the shapes and is not governed by the resolution of the device. Inkscape is a tool that can be used to create and edit vector images.
GIMP can be opened from Applications--->Graphics--->
[[File:COL_-_Opening_an_image_file_using_GIMP.png|thumb|450x450px|File opened in GIMP]] or a set of bitmaps. It is not a vector image editor (Inkscape is an vector image editor). A vector editor edits [https://en.wikipedia.org/wiki/Vector_graphics vector images]- which are stored as geometric information. GIMP is very powerful with many sophisticated features. We will learn a few commonly used functions in image editing:
[[File:COL_-_Opening_an_image_file_using_GIMP.png|thumb|450x450px|File opened in GIMP]] or a set of bitmaps. It is not a vector image editor (Inkscape is an vector image editor). A vector editor edits [https://en.wikipedia.org/wiki/Vector_graphics vector images]- which are stored as geometric information. GIMP is very powerful with many sophisticated features. We will learn a few commonly used functions in image editing:
# Cropping an image
# Cropping an image
