Robust Detection Outcome (RoDeO)

---

Official Repository of Robust Detection Outcome: A Metric for Pathology Detection in Medical Images. RoDeO is an easy to use object detection metric useful for (but not limited to) applications in medical imaging, such as pathology detection in Chest X-ray images. It evaluates three sources of errors (misclassification, faulty localization, and shape mismatch) separately and combines them to one score. RoDeO better fulfills requirements in medical applications through its interpretability, notion of proximity and strong penalization of over- and under-prediction, encouraging precise models.

Installation

RoDeO is available as a python package for python 3.7+ as rodeometric. To install, simply install it with pip:

python -m pip install rodeometric

Usage

import numpy as np
from rodeo import RoDeO

# Init RoDeO with two classes
rodeo = RoDeO(class_names=['a', 'b'])
# Add some predictions and targets
pred = [np.array([[0.1, 0.1, 0.2, 0.1, 0.0],
                  [0.0, 0.3, 0.1, 0.1, 1.0],
                  [0.2, 0.2, 0.1, 0.1, 0.0]])]
target = [np.array([[0.0, 0.0, 0.1, 0.1, 0.0],
                    [0.0, 0.2, 0.1, 0.1, 1.0]])]
rodeo.add(pred, target)
# Compute the score
score = rodeo.compute()
for key, val in score.items():
    print(f'{key}: {val}')

Advantages of RoDeO

1. AP@IoU benefits from severe overprediction at higher thresholds

RoDeO	AP@IoU	acc@IoU

2. Acc@IoU achieves high scores with underprediction due to the dominance of true negatives

RoDeO	AP@IoU	acc@IoU

3. Compared to threshold-based metrics (like Average Precision @ IoU), RoDeO degrades more gracefully and has a better notion of proximity

AP@IoU	acc@IoU