🍍Lecture 14

● Faster-RCNN

Proposal

//learn the region proposal

//say it‘s a object or not

● Feature Pyramid Network

Motivation

How to compute

贵&not share computation

2stages

Stage1: 发现object

Stage2: classify

● Single Stage Detector

3 anchor（template）

K class； A anchor

○ FCOS

应用了

由于有anchor的话，many detection redundent；

FCOS： anchor free

Final class score