Image feature detection is a key technique in image processing
pattern recognition
content-based image retrieval
and so on. The typical image feature detectors are analyzed. From the viewpoint of information used
the literatures on image feature detection are analyzed systematically
and image feature detectors can be categorized in to two kinds
that is
gradient-based ones and phase-based ones. Characteristics of each kind are discussed. The key issues of the important image feature detector are explained extensively and comprehensively. Based on the survey
some concerned issues needed further research are presented