Raster Graphics

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What is raster graphics?
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Raster graphics are digital images created or captured as a set of samples of a given space, often made up of pixels.
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What is a pixel?
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A pixel is the smallest unit of a raster image, representing a single point in the graphic.
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What is resolution in raster graphics?
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Resolution refers to the number of pixels in an image, usually described in terms of width by height, like 1920x1080.
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What is an example of a raster file format?
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Common raster file formats include JPEG, PNG, BMP, and GIF.
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How is color stored in a raster image?
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Color in a raster image is stored as a set of values within each pixel, often using color models like RGB.
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What happens when you enlarge a raster image?
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Enlarging a raster image can make it look pixelated because the individual pixels become more visible.
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What are raster graphics commonly used for?
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Raster graphics are often used for digital photographs, illustrations, and web graphics.
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How are vector and raster graphics different?
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Vector graphics are made up of paths, while raster graphics are made up of pixels. Vectors can be scaled without losing quality, while rasters cannot.
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What is anti-aliasing in raster graphics?
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Anti-aliasing is a technique used to smooth jagged edges in raster images.
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Why is it important to consider file size with raster images?
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Because raster images can have large file sizes, which affects storage and may impact loading times.
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What is a bitmap?
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A bitmap is a type of raster graphics image that consists of millions of pixels creating the complete picture.
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What software is commonly used to edit raster images?
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Software like Adobe Photoshop, GIMP, and Microsoft Paint are commonly used to edit raster images.
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What limitations do raster graphics have?
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The main limitation is loss of image quality when scaling up, pixelation, and typically larger file sizes compared to vector graphics.
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What does DPI stand for in raster graphics?
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DPI stands for Dots Per Inch, which measures the resolution of a printed raster image.
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Can raster graphics be easily converted to vector graphics?
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Converting raster to vector is possible but can be complex and sometimes involves loss of detail.
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