RoI pooling (51843512648).jpg
Region of interest pooling is an operation widely used in object detection tasks using convolutional neural networks. For example, to detect multiple cars and pedestrians in a single image. Its purpose is to perform max pooling on inputs of nonuniform sizes to obtain fixed-size feature maps (e.g. 7×7)
Artist: Exey Panteleev from Moscow, Russia. License: CC BY 2.0. Source
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