Two-dimensional-based indoor area confirmation method and device, terminal and storage medium

The invention discloses a two-dimensional-based indoor area confirmation method and device, a terminal and a storage medium, and discloses a method for obtaining a wall line segment set composed of all wall line segments of a wall frame under a two-dimensional plane, setting the value of each wall line segment as 2, selecting a starting wall line segment from the wall line segments, inquiring thesequentially connected wall line segments according to a certain direction so as to obtain a maximum closed area and a minimum closed area, recording the minimum closed area, subtracting 1 from the values of the wall line segments corresponding to the maximum closed area and the minimum closed area respectively, and selecting one wall line segment with the value of 1 to repeatedly execute the process; and taking all the recorded minimum closed areas as indoor areas and outputting the indoor areas until all the wall line segments are zero. By means of the mode, the indoor area can be automatically confirmed on the two-