Counting & germination

Counting seeds, sprouts and produce from images

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Counting is the measurement people most often do by hand and most often get wrong at scale — miscounts compound quietly across a trial. These guides cover what a smartphone can count reliably, where automated germination counting still needs a human check, and what counting at volume revealed in a real warming experiment.

Stomata Count Guide

Stomata Count with AI: How to Measure Stomatal Density from Microscope Images in Seconds

How AI counts stomata on leaf micrographs: stomatal density and index formulas, sample preparation, confidence scores, on-device counting, accuracy limits and use cases.

1 October 2026
Forest Regeneration & Climate

Climate Impacts on Oak Germination and Early Development: What a 2,112-Acorn Warming Experiment Reveals

A common-garden warming experiment on sessile and pubescent oak shows that a seed's climate of origin — not warming alone — drives germination, survival, and early growth. Leaf area was measured with the Petiole Pro app to derive specific leaf area.

1 August 2026
Germination Count Guide

Beyond the Sprout: 5 Surprising Lessons from Using AI for Germination Counting

Five practical lessons from applying Edge AI to germination counting in commercial nurseries, from diagnostic germination rates to human-in-the-loop verification and biological timing.

8 June 2026
Counting & Quality Control

Counting Round Objects with a Smartphone: Blueberries, Seeds, Nuts and Computer Vision

How a smartphone counts round objects — blueberries, soybean and chickpea seeds, peanuts, beans, grapes — using computer vision and light deep-learning models. Get count, average size, and standard deviation from one photo, why 87% accuracy is often enough, and why a calibration plate is the rule for real measurements.

14 May 2026
Germination Count Guide

AI-Powered Germination Count from a Photo: How It Works, What It Measures and How to Get Accurate Results

How AI counts germinated seedlings in plug trays from one photo: the method, germination rate and per-row metrics, photo tips, accuracy limits and use cases.

20 October 2025

Petiole Pro does the counting on a phone, with the count and the annotated image exported together so a number can always be traced back to what produced it.