/answers/how-to-estimate-rock-and-aggregate-size-with-computer-vision/index.md · 42 lines
---
title: "How to estimate rock and aggregate size with computer vision"
description: "A camera with steady light over a conveyor after the crusher or screen takes photos of the material as it passes. A model trained on the plant own images estimates the spread of rock sizes, flags oversize pieces, fines that look higher than usual, and foreign material such as wood, metal or clay balls, and it logs the result by belt and time. Plant staff can see a drift in size soon after it starts, which helps them check screens, crusher settings and feed before a lot of off-spec material is made. Each flag keeps its photo. Aim the camera at the belt, not at people. The plant lead reviews the trend and decides what to adjust. The model does not replace sieve tests, lab samples or product specs, which stay in place, and people make every quality and shipping call."
url: https://lidvizion.ai/answers/how-to-estimate-rock-and-aggregate-size-with-computer-vision/
site: Lid Vizion
index: https://lidvizion.ai/llms.txt
---
[Direct answers](https://lidvizion.ai/answers/)
# How can a quarry, mine or aggregate plant use computer vision to keep an eye on rock size between lab tests?
A camera with steady light over a conveyor after the crusher or screen takes photos of the material as it passes. A model trained on the plant own images estimates the spread of rock sizes, flags oversize pieces, fines that look higher than usual, and foreign material such as wood, metal or clay balls, and it logs the result by belt and time. Plant staff can see a drift in size soon after it starts, which helps them check screens, crusher settings and feed before a lot of off-spec material is made. Each flag keeps its photo. Aim the camera at the belt, not at people. The plant lead reviews the trend and decides what to adjust. The model does not replace sieve tests, lab samples or product specs, which stay in place, and people make every quality and shipping call.
## What this means in practice
- Start with one belt after one crusher or screen.
- Use steady lighting and a fixed camera height.
- Check the size estimates against your own sieve tests.
- Log results by belt and time to spot drift early.
- Keep sieve tests and lab samples in place.
## How Lid Vizion approaches it
We start with the business decision and operating context, define ownership and measurable milestones, then use configuration, integrations, automation, or custom software only where each earns its place.
## More on Automation & custom AI
- [How can a garage owner or operator use computer vision to keep track of wear and damage between engineer visits?](https://lidvizion.ai/answers/how-to-inspect-parking-garages-with-computer-vision/)
- [How can a property manager or building owner use computer vision to check walls, windows, gutters and other exterior parts?](https://lidvizion.ai/answers/how-to-inspect-building-exteriors-with-computer-vision/)
- [How can a pool service company use computer vision to document visits and spot problems early?](https://lidvizion.ai/answers/how-to-support-pool-service-visits-with-computer-vision/)
[Compare services](https://lidvizion.ai/services/) · [Use a planning tool](https://lidvizion.ai/tools/) · [Explore workflow use cases](https://lidvizion.ai/use-cases/) · [More direct answers](https://lidvizion.ai/answers/)
Talk it through
## Have a version of this question inside your company?
Bring the decision, the constraints, and what a good outcome looks like.
[Talk through the decision](https://lidvizion.ai/contact/?need=ai-workflow&from=%2Fanswers%2Fhow-to-estimate-rock-and-aggregate-size-with-computer-vision%2F#write) · [Book a call](https://calendar.app.google/bB26LdA9e2gmGFp69)