August 2018
Intermediate to advanced
272 pages
7h 2m
English
book
Hands-On Convolutional Neural Networks with TensorFlow
by Iffat Zafar, Giounona Tzanidou, Richard Burton, Nimesh Patel, Leonardo Araujo
Content preview from Hands-On Convolutional Neural Networks with TensorFlow
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Evaluating detection (Intersection Over Union)
Before we move further, we need to know how to measure whether our model detected an object correctly or not; for this, we calculate the Intersection Over Union (IoU) that will return a number, telling us how good our detection was based on some reference (Ground Truth). IoU is calculated by dividing the area where a detection and ground-truth box overlap with each over by the total area covered by the detection and ground-truth box:
Here is an example of a poor, good, and excellent IoU:
By convention, ...
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