Representative point of the WFD water body.

The representative-point extraction unit extracts one representative point for each extracted dwell area and determines a score for each representative point on the basis of the density of data points within that dwell area.

determination by continuous flow measurement at a representative point.

The representative point determining circuit (44) determines a new representative point and stores the coordinates and the feature value of the vicinity image.

A representative point determining circuit (44) determines a representative point in an image and stores the coordinates and the feature value of the vicinity image.

A representative point seeking circuit (45) seeks the representative point of the immediately previous image of each of the images till the image in which an ending point is determined and stores the coordinates.

The object detection apparatus outputs data regarding the set representative point.

A representative point is a coordinate point that represents a line or a polygon.

a representative point is a point that represents a line or a polygon.

(Ein- is another representative point where und are negative.)

(b) determination by continuous flow measurement at a representative point.

(A- is another representative point where and are negative.)

The flue gas flow Qe is determined by continuous flow measurement at a representative point.

According to the main curvature at the representative point, a curvature line generated.

The GHG-concentration in the flue gas is determined by continuous measurement at a representative point.