Difference between revisions of "GIMP"
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*The tool bar, the main features to use from it are '''Image''' and '''Tools'''. In the toolbox(Positioned on the right hand side) the main tool to use is '''Select'''. | *The tool bar, the main features to use from it are '''Image''' and '''Tools'''. In the toolbox(Positioned on the right hand side) the main tool to use is '''Select'''. | ||
**'''Image''', located on the top left hand side of GIMP, had various tools within it. The main one to use is '''Mode''' though '''Crop to Selection''' can be used if what you've selected in an image is much smaller than the rest of the canvas. | **'''Image''', located on the top left hand side of GIMP, had various tools within it. The main one to use is '''Mode''' though '''Crop to Selection''' can be used if what you've selected in an image is much smaller than the rest of the canvas. | ||
| − | *** Within '''Mode''' there is 5 options. | + | *** Within '''Mode''' there is 5 options. '''RGB''', '''Gray scale''' and '''Indexed''' are the most important to understand when making a raster. |
**** '''RGB''' is the normal setting of a image, where colors at selected via 3 channels of colors(Red,Green and Blue) allowing for greater intensity of colors. | **** '''RGB''' is the normal setting of a image, where colors at selected via 3 channels of colors(Red,Green and Blue) allowing for greater intensity of colors. | ||
| − | **** ''' | + | **** '''Gray scale''' changes the image so that the images colors are flattened and converted to 256 values of gray, with each pixel being adjusted on a 0(white)-255(black) scale of brightness |
**** '''Indexed''' changes the image so that it becomes a 8-bit image with up to 255 color variations, though GIMP lets you change the maximum amount of colors allowed. Dithering is just in case the image has more that 255 color variations, as without dithering images with more than 255 colors would have blotches or solid blocks of color where there should be subtle color variations. | **** '''Indexed''' changes the image so that it becomes a 8-bit image with up to 255 color variations, though GIMP lets you change the maximum amount of colors allowed. Dithering is just in case the image has more that 255 color variations, as without dithering images with more than 255 colors would have blotches or solid blocks of color where there should be subtle color variations. | ||
***'''Crop to Selection''' is a straight forward tool, it crops down the canvas size to the borders of what you have selected. | ***'''Crop to Selection''' is a straight forward tool, it crops down the canvas size to the borders of what you have selected. | ||
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****'''Brightness and Contrast''' adjusts the brightness of the image and the contrasts between the dark and lights. | ****'''Brightness and Contrast''' adjusts the brightness of the image and the contrasts between the dark and lights. | ||
****'''Hue and Saturation''' adjusts the hue, saturation and color weights on an active layer or selected area. Generally a pure color saturation that doesn't change the image's mode unlike '''Colorize''' | ****'''Hue and Saturation''' adjusts the hue, saturation and color weights on an active layer or selected area. Generally a pure color saturation that doesn't change the image's mode unlike '''Colorize''' | ||
| − | ****'''Colorize''' renders the active layer or selected area into a | + | ****'''Colorize''' renders the active layer or selected area into a gray scale before applying a color over it so it appears more like a colored glass. Gives a sepia like effect to images. |
****'''Color Balance''' subtly adjusts the color balance in an active layer or selected area, making it useful for correcting colors in digital photos. | ****'''Color Balance''' subtly adjusts the color balance in an active layer or selected area, making it useful for correcting colors in digital photos. | ||
**'''Select tool''': There are 4 types of selection tools in the toolkit: '''Rectangular''', '''Elliptical''', '''Free''' and '''Fuzzy'''. | **'''Select tool''': There are 4 types of selection tools in the toolkit: '''Rectangular''', '''Elliptical''', '''Free''' and '''Fuzzy'''. | ||
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***'''Elliptical'''(Dotted circle icon) is also like a normal selection type except for the fact that it selects in a circular shape rather than a rectangular shape. | ***'''Elliptical'''(Dotted circle icon) is also like a normal selection type except for the fact that it selects in a circular shape rather than a rectangular shape. | ||
***'''Free'''(Lasso icon) or otherwise known as a 'Lasso' select functions differently. The user sets an origin point on the image and then continue to put down points along the image until they return back to the origin point. Everything within the selected points will be selected, making this select tool the best for when you need precision. | ***'''Free'''(Lasso icon) or otherwise known as a 'Lasso' select functions differently. The user sets an origin point on the image and then continue to put down points along the image until they return back to the origin point. Everything within the selected points will be selected, making this select tool the best for when you need precision. | ||
| − | ***'''Fuzzy'''(Wand Icon), the last selection tool functions more like a quick Free Select tool where you just click on where you want to select and it'll select until it hits the borders of | + | ***'''Fuzzy'''(Wand Icon), the last selection tool functions more like a quick Free Select tool where you just click on where you want to select and it'll select a that section until it hits the borders of it. It works the best with images that don't have too much anti aliasing and aren't blurry, as it may cause the Fuzzy tool to not select some sections of an image. |
===Using GIMP to create a raster=== | ===Using GIMP to create a raster=== | ||
*Start off by opening the image file in GIMP.[[File:GimpRasterTest.jpg|thumbnail|Border|right|Alignment|250 px|link=File:GimpRasterTest.jpg|alt=Alt|lang=Langtag|Starting image.]] | *Start off by opening the image file in GIMP.[[File:GimpRasterTest.jpg|thumbnail|Border|right|Alignment|250 px|link=File:GimpRasterTest.jpg|alt=Alt|lang=Langtag|Starting image.]] | ||
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*If you missed a section that you want to select but don't want to deselect what was already selected you can hold the shift key to add to your existing selection. | *If you missed a section that you want to select but don't want to deselect what was already selected you can hold the shift key to add to your existing selection. | ||
**Likewise if you find you've selected too much just simply hold the ctrl key and you can deselect from your existing selection while it is held. | **Likewise if you find you've selected too much just simply hold the ctrl key and you can deselect from your existing selection while it is held. | ||
| − | *If you want to select one color in the image but it's not all joined together, you can use '''Tools''' -> '''Selection Tools''' -> '''By Color Select'''. This will select every instance with the same color value in the canvas. | + | *If you want to select one color in the image but it's not all joined together, you can use '''Tools''' -> '''Selection Tools''' -> '''By Color Select'''. This will select every instance with the same color value in the canvas. Has some issues as it will only pull the same color values, so even if it's off by a bit it won't be selected. |
*GIMP also has a online tutorial guide on how to do various tasks within the program. The link can be found here: https://docs.gimp.org/en/index.html | *GIMP also has a online tutorial guide on how to do various tasks within the program. The link can be found here: https://docs.gimp.org/en/index.html | ||
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Revision as of 12:00, 23 April 2018
Open source raster graphics editor.
***Instructions will be added soon***
