More accurately the present invention relates to an algorithms of the search for pictorial data. ;It is an object of the present invention to its object search systems, and there is the characteristic information implemented from pictorial data must reduce mistake using the corner points of the histogram of image, occur in current input method, simple keyword search system. ;One feature of image needed for the present invention includes the following steps: to extract one in searching algorithm for achieving the above object; Analyze feature extraction; It is other to be needed from the characteristic of analysis for the step of obtaining information; From the retrieval information of a safety database;Compare extraction step image from the database retrieved; Step is rediscovered within its consequence again; Accurate information extraction; It is characterized by comprising;In addition, the present invention includes that step one corner point of extraction is transformed into image at the edge in searching algorithm; Step is by dividing the summations of the pixel wherein 3x3 pixels of RGB (1-225) of corner points; Compare the value of corner and database; The image of 500 extraction of the conversion up in gray scale screen homogeneous phase; Histogram information acquisition step; It is divided into four empty vans and extracts a high frequency value; High frequency region in terms of deriving from fiducial value.
展开▼
