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Teachers' toolkit for creating and re-purposing OER using FOSS/Image and animation OER (view source)
Revision as of 14:42, 28 March 2017
, 14:42, 28 March 2017no edit summary
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==== Creating image resources using a screen capture tool [https://help.ubuntu.com/stable/ubuntu-help/screen-shot-record.html Screenshot] ====
==== Creating image resources using a screen capture tool [[File:Screeshoto logo.png|frameless|25x25px]][https://help.ubuntu.com/stable/ubuntu-help/screen-shot-record.html Screenshot] ====
[[File:COL_-_Creating_an_image_using_Screenshot_-_select_area.png|thumb|450x450px|Image 5 - 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.
[[File:COL_-_Creating_an_image_using_Screenshot_-_select_area.png|thumb|450x450px|Image 5 - 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 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’ (image 5). 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).
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’ (image 5). 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).
{{clear}}
{{clear}}
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’.
{| class="wikitable"
|'''Activity time''' - You should create an image OER using Screenshot of an image from your computer or the web, when it is sharing information which you find relevant to your OER.
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’.
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=== Creating a simple animation (''Tux Paint'') ===
=== Creating a simple animation (''Tux Paint'') ===
We have created four drawings of a tree, to represent different views over the year. The first one is barren, second with leaves, third with leaves and flowers and fourth one with leaves, flowers and fruits. The second, third and fourth images are created by modifying the previous one and saving the same. Playing these images recurrently in Tux Paint creates a simple animation of the changes in the tree over time (image 6).
We have created four drawings of a tree, to represent different views over the year. The first one is barren, second with leaves, third with leaves and flowers and fourth one with leaves, flowers and fruits. The second, third and fourth images are created by modifying the previous one and saving the same. Playing these images recurrently in Tux Paint creates a simple animation of the changes in the tree over time (image 6).
{{clear}}A second example of creating an animation using a series of images in Tux Paint is also shown below. Here with very minimum changes between the images, an animation of a walking person has been created. RAKESH INSERT ANIMATION HERE
{{clear}}A second example of creating an animation using a series of images in Tux Paint is also shown below. Here with very minimum changes between the images, an animation of a walking person has been created. RAKESH / Venkatesh INSERT ANIMATION HERE
{{clear}}
{{clear}}
=== Creating and editing image resources using an Image editor [https://www.gimp.org/ GIMP] ===
{| class="wikitable"
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 graphics or 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 make raster images. There is another kind of digital image called the [https://en.wikipedia.org/wiki/Vector_graphics vector graphics] which is not discussed in the toolkit. Vector graphics or images involve creating drawings based on defined geometrical information; 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.
|'''Activity time''' - You should create an animation using a series of images in Tux Paint. You should carefully do the first drawing, then make minor changes to an image, using a brush and eraser, and save it as the next image in the animation.
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=== Creating and editing image resources using an image editor [[File:GIMP Icon without brush.svg|frameless|24x24px]] [https://www.gimp.org/ GIMP] ===
Whether we capture using camera or an application like Tux Paint 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 [[wikipedia:Raster_graphics|raster images]] and they are dependent on the resolution of the device for their quality. All raster graphics or images are those that involve capturing some image or object using various devices.
GNU Image Manipulation Program (GIMP) is an image editing software, that can edit and make raster images. There is another kind of digital image called the [https://en.wikipedia.org/wiki/Vector_graphics vector graphics] which is not discussed in the toolkit. Vector graphics or images involve creating drawings based on defined geometrical information; this can be defined in terms of the shapes and is not governed by the resolution of the device. [[wikipedia:Inkscape|Inkscape]] is a tool that can be used to create and edit vector images.
GIMP can be opened from Applications--->Graphics--->[[File:GIMP Icon without brush.svg|frameless|24x24px]] [https://www.gimp.org/ GIMP Image Editor] (image 7). GIMP stands for GNU Image Manipulation program.
GIMP can be opened from Applications--->Graphics--->[[File:GIMP Icon without brush.svg|frameless|24x24px]] [https://www.gimp.org/ GIMP Image Editor] (image 7). GIMP stands for GNU Image Manipulation program.