The image information change law with the change of scale parameter is first studied in terms of regarding ramp edge
and step edge as measurement of image information. Then the paper proposes a kind of adaptive recursive algorithm of
scale parameter with the module of visual characters. The information of the image is uniformly distributed among each
layer in the algorithm. The method can avoid the problem of complicated computation or over- distortion because of
losing too much key information. The experimental results show that the uniformly distributed information is more
reasonable for human to perceive an image which will be useful for higher-level image processing technologies such as
object recognition.
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