Method for automatically identifying walls in house type graph

Abstract

The invention provides a method for automatically identifying a wall body in a house type graph, which comprises the following steps of: carrying out position analysis on interference information in the house type graph, and eliminating the interference information in the house type graph by utilizing the maximum outer contour of the wall body; setting a segmentation threshold value according to bimodal characteristics of a wall gray histogram in the house type image, segmenting a wall area from the gray scale house type image according to the segmentation threshold value, and filtering an interference item according to the size of a connected domain area; and generating a vector data structure of the wall in a directional straight line fitting manner, so that the wall is identified from the house type graph. According to the method for automatically identifying the wall body in the house type graph, in the house type graph preprocessing stage, removal processing on interference information in the house type graph is added, the difficulty of follow-up wall recognition is reduced, and the accuracy of wall recognition is improved; the improved histogram double-peak method is utilizedto segment the wall body, and the situation of uneven gray scale caused by edge information damage is considered during threshold value selection, so that the wall body and the background can be distinguished better.

Description

technical field [0001] The invention relates to a method for identifying a house type diagram, in particular to a method for automatically recognizing a wall in a house type diagram. Background technique [0002] With the change of modern people's demand for house purchase and decoration, people increasingly hope to know the overall structure of the house and the expected decoration effect in advance. However, the traditional two types of building plans, building floor plans and building construction drawings, cannot bring users an immersive experience. At present, a new architectural effect display method based on virtual reality technology, three-dimensional house type display technology, has gradually replaced the traditional two-dimensional house type map and appeared in the house purchase market. [0003] Since the simple two-dimensional floor plan cannot provide the information of the entire building, it cannot bring realistic visual effects, and it is more complicate...

AI Technical Summary

Problems solved by technology

[0008] (3) Although the sparse pixel tracking method can directly extract the skeleton of the wall, the skeleton of other background objects will also be extracted while extracting the skeleton of the wall, which will affect the structure of doors, windows, furniture, etc. Distortion is likely to occur at the intersection of the wall skeleton, which increases the difficulty of post-processing work

[0009] (4) The method of dividing the wall area according to the flatness of the wall depends on the shape of the wall, but the scanned image is often affected by noise, and the edge information is easily lost, which affects the calculation of the flatness

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