METHODS, DEVICES AND COMPUTER-READABLE STORAGE MEDIA FOR SCALE SPACE NORMALIZATION TECHNIQUE FOR IMPROVED FEATURE DETECTION IN UNIFORM AND NON-UNIFORM ILLUMINATION CHANGES

摘要

normalization process is completely or substantially reduce the impact that changes in illumination on the features / keypoints detected in the image is implemented in a different room to scale. Images may be processed by screen gradually blur the image using the smoothing function to produce a smoothed scale space for the image. Scale difference space may be generated by obtaining the difference between the two different versions of the smoothed image. Normalized scale space difference image may be generated by dividing the difference between the scale space image in a third smoothed version of the image, wherein the third version of the smoothed image is smooth as much as two different smoothed version of the image of only the smooth or is more blunt. Scaling the normalized difference image space may be used to detect one or more features / key point for the image after that. ;