Formulate and evaluate an element hypothesis

Properties of a formulated element hypothesis — Element name, Page, Surrounding rect, Width × Height, Detected, Search Conditions quality, Chain quality.

As a result of a hypothesis being formulated, an element region is indicated on the image. An element region is a region on the image consisting of an interconnected set of rectangles around an object detected on the image. The region for the null hypothesis is the entire element search region. The search region may contain several objects that suit the element description, and a hypothesis can be formulated for each one.

A formulated element hypothesis is displayed on the Tree of Hypotheses pane and has the following properties:

Hypothesis properties

Property	Description
Element name	The full name of the element.
Page	The number of the page on which the element was detected.
Surrounding rect	The coordinates of the rectangle which surrounds the region of the hypothesis.
Width x Height	The width and height of the region of the hypothesis.
Detected	Shows whether the object described by the element has been found (True) or whether a null hypothesis has been formulated (False).
From the best path	Shows whether the found hypothesis belongs to the best path in the tree of hypotheses (True) or not (False).
Search Conditions quality	How well the hypothesis matches the properties of the element specified either explicitly or using additional search area conditions (Code Editor panel, Search Conditions section).
Hypotheses Evaluation quality	How well the hypothesis matches the additional hypothesis precision conditions (Code Editor pane, Hypotheses Evaluation section).
Chain quality	The current quality of the chain of hypotheses, from the first subelement of the group to the current subelement. Chain quality is calculated by multiplying the qualities of all subelements in the chain and is used to compare rival chains of hypotheses.