Patent ID: 8620070

Claim:
A corresponding image processing method comprising: a first step for searching for a corresponding point between a target image and a corresponding image; a second step for performing radiometric calibration such that a camera response function of the corresponding image has a linear function; a third step for compensating for a color of the corresponding image by calculating a color conversion matrix; and a fourth step for measuring similarity between the target image and the corresponding image, wherein the first step comprises: detecting features using a feature detecting method based on a corner point; deriving first matching points N by matching the features; deriving second matching points M by removing outlier in the first matching points N; and determining suitability of the feature detection, and wherein the determining the suitability of the feature detection comprises: when a number of the second matching points M is divided by a number of the first matching points N and a quotient falls below 0.7, re-detecting the features using a feature detecting method based on invariant features; and matching the features and re-deriving second matching points M 2 by removing outlier.