Abstract: First, the image recognition method of the present invention transforms a first Cartesian coordinate value of a first image and a second Cartesian coordinate value of a second image in the Cartesian coordinate system into a first polar coordinate value and a second polar coordinate value in a polar coordinate system, respectively. Afterwards, the image recognition method adjusts the first image and the second image to multiple scales based on a radial coordinate of the polar coordinate system, and obtains a plurality of first local description values and a plurality of second local description values by analyzing the first interest points of the first image and the second interest points of the second image on the multiple scales, respectively. Finally, by intercomparing the first local description values and the second local description values, a matching feature between the first image and the second image is recognized.

Abstract: First, the image recognition method of the present invention transforms a first Cartesian coordinate value of a first image and a second Cartesian coordinate value of a second image in the Cartesian coordinate system into a first polar coordinate value and a second polar coordinate value in a polar coordinate system, respectively. Afterwards, the image recognition method adjusts the first image and the second image to multiple scales based on a radial coordinate of the polar coordinate system, and obtains a plurality of first local description values and a plurality of second local description values by analyzing the first interest points of the first image and the second interest points of the second image on the multiple scales, respectively. Finally, by intercomparing the first local description values and the second local description values, a matching feature between the first image and the second image is recognized.