Scale space normalization technique to improve the detection characteristics in the change of the uniform and non-uniform illumination

摘要

Normalization process is carried out by the difference in scale space in order to greatly reduce or completely the effects of changes in the lighting on the features / key points detected in the image. Can be processed by in order to generate a scale space of the smoothed image, the image blurs progressively images using a smoothing function. Can be generated by the difference in scale space, taking the difference between the smoothed version two different images. May be generated by the differential image of the scale space is normalized, dividing the difference image of the scale space by smoothed version of the third image, a smoothed version two different image version smoothed third image is smoother than that or is smooth as much as smoothest at home. Next, the difference image of the scale space is normalized, can be used to detect the feature / keys one or more points on the image.