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How hypotheses are generated and assessed

Once the program has formulated a hypothesis (i.e. detected the object that best matches the description provided in the element), it draws the region of the element on the image.

A region is an area on the image consisting of several rectangles drawn so as to enclose the object. The region of a null hypothesis is the entire search area of the element.

The search area of an element may contain several objects which match the description contained in the element, i.e. the program can formulate a hypothesis for each one of them. When describing an element, you can specify the maximum number of hypotheses — this will limit the number of candidate variants the program will consider when looking for objects described by the element. Hypotheses for the elements that come next in the tree are formulated on the basis of the best hypotheses for the preceding element. The maximum number of best hypotheses for a particular element is set in the element's Properties dialog box (General tab). For simple elements, the default value is; for Group elements, the default value is 1.

Important!We do not recommend changing the default maximum number of hypotheses.

The quality of a hypothesis depends on the properties of the corresponding elements.

4/13/2021 11:12:27 AM

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