From Satellite Pixels to Farmer Decisions: What Building FieldLens Taught Me

说明与用途

FieldLens 将免费卫星数据转化为可操作、隐私保护的农户建议，减少人工检查并实现成本效益。

问题

Farmers in Guangdong need actionable insights from satellite data but lack tools to interpret it.

结果

FieldLens turns free satellite data into actionable, privacy‑preserving advisories for small growers, reducing manual field checks and enabling cost‑effective monitoring.

工作流

• Draw a polygon on the map or use a sample orchard.
• Pull Sentinel‑2 NDVI time series via Google Earth Engine and composite into vigor zones.
• Run a local Gemma model via Ollama to generate a plain‑language advisory report in Chinese.
• Present the report to the farmer; pricing is 199 RMB/plot/year.
• Iterate based on field validation scheduled for November.

证据

Satellite data could answer all of this — Sentinel‑2 flies over every five days, free for anyone to use.

来源

A local Gemma model via Ollama writes the advisory report. This was a deliberate choice, not a gimmick: grower data never leaves the machine, there's no per-report API bill, and it works where connectivity is flaky.

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During research I found that NDVI ≥ 0.70 is a drone canopy-pixel reference, not a Sentinel‑2 block-average threshold. Mixing those up is exactly how ag‑tech demos lie to farmers.

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Every screenshot and demo polygon is a sample geometry with a visible "Sample" badge. I never drew a real orchard boundary in any public material.

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