mc
short answer
essay
Prompt
[MANDATORY] AOI — Area of Interest: definition and purpose.
Plain English answer (default view) — what you'd actually write on the test
**AOI = Area of Interest.** It's like cropping a satellite image down to just the patch you care about. Could be a polygon, a rectangle, or a weird outline — whatever fits your study area. Why bother? Two reasons: - **Speeds things up** — the computer only crunches the area you specified, not the whole 185 km × 170 km Landsat scene. - **Keeps your training samples honest** — you don't want unrelated land-cover muddying your stats. In ERDAS Imagine you draw it on the screen and the software respects it for whatever you do next.
🔬 Technical version / model bullets (revealed on click) — one bullet per line
User-defined spatial subset — polygon, rectangle, or irregular shape. Restricts an operation to part of an image (clip, classify, summarize stats for only that area). In ERDAS Imagine, an AOI can be one region or a layer of regions. Why: saves processing time + disk space, and focuses training statistics on the intended target.
💡 Mnemonic / memory aid (shown on hover)
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