# Feature detector vs dense detector

What is the difference between a feature detector and a dense detector in computer vision? Are they the same or a subset of one another?

For the following algorithms (implemented in OpenCV), which of them are feature detectors and/or dense detectors?

• SIFT
• SURF
• AGAST
• KAZE
• AKAZE
• FAST
• BRISK
• ORB
• GFTT
• HarrisLaplace
• StarDetector
• I know what a feature detector is (roughly so), but what's a dense detector? Can you link to a usage of that term? – Marcus Müller Jun 27 '20 at 0:16
• I was reading this paper and the authors mention Dense Detector, even in other papers they mention Dense Feature Detector. And, I've already googled but didn't find any concrete answer. – paul-shuvo Jun 27 '20 at 0:25