Cell Bound — How accurate is your brain at quantifying populations visually?

Your browser does not support the Cell Bound preview canvas.Analyzing locally…
Occupied candidate area…
Background / fat-space candidate…
Non-target / bone candidate…
Open full analyzer ↓

Research and education only · Not for diagnosis or patient care · Image pixels stay local

Research and education only · Not for diagnosis or patient care · Image pixels stay local

Quantification and grouping of populations based on visual phenotype

The “Fruit Stand Approach”

The full field—or a selected rectangular region—is the fixed denominator. Visual-group percentages and heuristic image compartments all use that same region.

No field
Choose an image to beginPNG, JPEG, or WebP · up to 30 MB

Local image workspace

Bring in one representative field

Choose, drop, or paste a de-identified PNG, JPEG, or WebP image. It is processed locally; maximum file size: 30 MB.

Analysis regionFull field
Enter exact region in analyzed pixels
Advanced exploratory setting

This recalculates every image compartment. It has no validated clinical cutoff and is provided only to explore the heuristic.

Segmentation and clustering run locally in this browser.Use a de-identified, pre-cropped representative field.

Why Cell Bound exists

People around the world deserve access to good medical care regardless of income.

Estimating cellularity and population proportions is a visual skill built through repeated exposure, feedback, and calibration. Cell Bound makes that practice more accessible and reviewable without claiming to diagnose disease or guide patient care.

Private by designNo image saving required. Selected pixels stay in the browser during analysis.
Human-reviewableThe overlay and every denominator remain visible instead of hiding the calculation.
Intentionally boundedNo diagnosis, no cell-type identification, and no claim of clinical validation.
Research and education only · Not for diagnosis or patient care
No WSI requiredWorks without a whole-slide scanner.
No expensive cameraDesigned for ordinary microscope-camera exports.
Android compatibleDesigned for current Android browsers; device performance varies.
FreeAn open research and education proof of concept.