ITPEC IP April 2022 Question 25
ITPEC IP April 2022 — Question 25 of 100
Raster graphics allow the color and brightness of each individual pixel to be adjusted. A raster image stores a grid of pixels, each with its own color value. This makes raster representation well suited to photographs and painting operations that manipulate fine color and tone details at particular points.
Answer (b)
Why not others:
- (a) CAD commonly relies on vector graphics because shapes and dimensions are represented mathematically
- (c) raster file size generally grows as resolution and pixel count increase
- (d) enlarging a raster image exposes its fixed pixels, producing jagged or blocky edges
Key rule: Raster graphics are resolution-dependent pixel grids; vector graphics are mathematically defined and can be enlarged without pixelation.
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