What it is
| Fact | Value |
|---|---|
| Accession | BBBC041, version 1 |
| Sample | human blood smears, Giemsa stained, P. vivax infection |
| Images | 1,364, from three sets (Brazil, Southeast Asia, and a time course) |
| Cells | about 80,000 |
| Classes | 2 uninfected (RBC, leukocyte), 4 infected (gametocyte, ring, trophozoite, schizont) |
| Labels | class plus bounding box per cell, with a "difficult" flag |
| Format | PNG or JPG |
| License | CC BY-NC-SA 3.0 (Jane Hung) |
The source page gives no image size.
What people use it for
Object detection with heavy class imbalance: more than 95% of cells are uninfected red blood cells, so a model that finds the rare stages is the real test.
Source and citation
Source: https://bbbc.broadinstitute.org/BBBC041 (read 2026-10-22). Cite: "We used image set BBBC041v1, available from the Broad Bioimage Benchmark Collection [Ljosa et al., Nature Methods, 2012]."
Frequently asked questions
What classes are in BBBC041?
Uninfected red blood cells and leukocytes, and four infected stages, gametocytes, rings, trophozoites and schizonts. Annotators could also mark a cell as difficult.
What format are the BBBC041 labels?
Each cell has a class label and bounding box coordinates. Images are PNG or JPG.
Can I use BBBC041 commercially?
No. It is licensed CC BY-NC-SA 3.0 Unported, by Jane Hung.
