Key pixel point matching method and device, and image matching method and device

The embodiment of the invention relates to the field of digital image processing and in particular relates to a key pixel point matching method and device, and an imaging matching method and device, which are used for improving the reliability and the accuracy rate of determined matching points. The key pixel point matching method provided by the embodiment of the invention comprises the following steps: determining a first feature vector matched with a feature vector of a to-be-matched key pixel point in a feature vector set of a second image on account of a to-be-matched key pixel point of a first image; determining a second feature vector matched with the first feature vector in a feature vector set of the first image; determining that the to-be-matched key pixel point and a key pixel point corresponding to the first feature vector form a pair of matching points when a coordinate vector of the to-be-matched key pixel point is as same as that of a key pixel point corresponding to the second feature vector. The key pixel point matching method and device, and the imaging matching method and device provided by the embodiment of the invention can be used for improving the reliability and the accuracy rate of the determined matching points.