Rapid Crop Damage Assessment by Drone

Romania has 8.1 million hectares of arable land. Every year, extreme weather events — hail, floods, prolonged drought — affect hundreds of thousands of hectares. In 2024 alone, hail destroyed over 120,000 ha of crops in Teleorman, Olt, and Dolj counties. Affected farmers depend on rapid, precise damage assessment to access APIA subsidies or private insurance payouts.

Drone-based assessment replaces the manual inventory process — an expert walking through fields for days — with a complete aerial inspection in a few hours. The drone captures multispectral images, generates NDVI maps, and automatically calculates affected areas with sub-1-square-meter precision.

How It Works

1. Urgent request through the platform. The farmer or agronomist places a request on ProxyDrone indicating the parcel location, crop type, and nature of the event (hail, flood, drought). The nearest available operator is notified.
2. Flight planning. The operator configures an automated flight path based on the parcel boundary. Flight altitude (30-50 m) and image overlap (75% frontal, 60% lateral) are set for high-resolution orthophoto generation.
3. Autonomous flight with multiple sensors. The drone surveys the parcel capturing RGB (visible) and multispectral (NIR, Red Edge) images. A typical flight covers 20-30 ha in 25 minutes.
4. Processing and delivery. Images are processed into a georeferenced orthomosaic and NDVI map. The report includes: total affected area, degree of damage per zone (0-100%), and estimated quantitative losses.

The NDVI Index — Key to Objective Assessment

NDVI (Normalized Difference Vegetation Index) measures vegetation health on a scale from -1 to +1. Healthy vegetation strongly reflects near-infrared light (NIR) and absorbs red light, producing NDVI values of 0.6-0.9. Damaged crops show values below 0.3.

This measurement eliminates the subjectivity of visual assessment. Two adjacent parcels may look similar to the naked eye, but an NDVI map reveals clear differences between hail-struck areas (NDVI 0.15-0.25) and unaffected zones (NDVI 0.7-0.85).

Comparison: Drone Assessment vs. Manual Ground Assessment

Economic Analysis

The direct cost of drone assessment is significantly lower, but the real advantage comes from secondary consequences:

• Faster payouts. A damage claim with complete aerial documentation is processed on average 40-60% faster by APIA and insurers. The farmer receives funds when there is still time to react — replanting, purchasing alternative feed.
• Higher payouts. Manual assessment frequently underestimates the affected area by 15-25% because it relies on sampling. The NDVI map documents every patch of damaged land, including isolated zones the expert never walked through.
• Fewer disputes. Georeferenced data with timestamps is accepted as objective evidence. Farmers report a 70% reduction in insurer contestations when presenting NDVI documentation.

Common Use Cases

Hail — immediate documentation matters

Hail strikes randomly: one parcel may be completely destroyed while the adjacent one is untouched. Ground assessment cannot accurately map the boundaries of affected zones. The drone generates a precise damage-degree map on the same day, essential for the insurance claim. After 48-72 hours, visible hail traces fade on certain crops, making late documentation less conclusive.

Floods — field access is impossible

When a field is underwater or turned into a swamp, no expert can physically enter the parcel. The drone surveys the flooded area, measures the extent of water coverage, identifies compromised crops, and estimates the area of total vs. partial losses. This type of assessment is frequently requested in the Baragan Plain and Western Plain after episodes of excessive rainfall.

Drought — gradual assessment of water stress

Unlike hail, drought does not destroy uniformly. A 100 ha parcel may have zones with total loss, zones with moderate stress, and unaffected zones (for example, near a watercourse). The NDVI map automatically classifies these zones, enabling precise calculation of differentiated losses.

Why ProxyDrone

The ProxyDrone platform connects farmers with verified drone operators in their proximity. For an urgent damage assessment request, the system automatically identifies the nearest available operator to the parcel location. Pricing is transparent, payment is secured through escrow, and the report is delivered digitally through the platform.

The farmer receives a complete file: RGB orthomosaic, NDVI map, area calculations by damage category, and a PDF report ready to attach to the compensation claim. The operator receives payment after the farmer confirms delivery.

Frequently Asked Questions

How much does drone damage assessment cost?

The cost is approximately 200 RON/ha, significantly less than manual assessment (500-800 RON/ha). The price includes the flight, image processing, NDVI map, and the complete PDF report.

How quickly can an operator arrive after a weather event?

The ProxyDrone platform automatically identifies the nearest available operator. Average time from request to flight is 4-12 hours, depending on location. For hail damage, we recommend requesting within the first 24 hours, before visible traces fade.

Is the assessment report accepted by insurers and APIA?

Yes. The report includes a georeferenced orthophoto with timestamp, NDVI map with damage grade classification, and automatic area calculation. Insurers and APIA accept this data as objective evidence, and farmers report a 70% reduction in contestations.

What happens if the weather is bad on assessment day?

The drone can fly under clouds without issues. The only limitations are active rain and wind above 35 km/h. In these conditions, the flight is rescheduled for the first favorable weather window, usually the same day or the next.