Urban building window-wall ratio automatic identification method

Abstract

The invention discloses an urban building window-wall ratio automatic identification method. A sample picture meeting a certain requirement is shot, pixel-level labeling is carried out, and an XML file is generated and imported into an improved Unet architecture; recognition training is carried out on the outer wall and the window in the picture in a zooming and window-scanning mode; after training is completed, a certain number of samples are selected for prediction and picture repairing, and when 80% or above of prediction sample recognition errors are smaller than 10%, it is considered thatthe model training effect is good, at the moment, a model prediction library is established according to set parameters, and the model prediction library is popularized to window-wall ratio identification application of urban mass buildings. For large-scale picture acquisition of cities, shooting or free map websites can be relied on; and finally, a picture to be predicted is input into the modelprediction library, and predicting is performed to obtain the window-wall ratio of each building. The urban building window-wall ratio automatic identification method provided by the invention can beused for urban energy consumption simulation, and can effectively improve the establishment speed and precision of an urban energy consumption model.

Description

technical field [0001] The invention belongs to the technical field of energy saving, and relates to model construction of urban energy consumption simulation, in particular to an automatic identification method of window-to-wall ratio of urban buildings. Background technique [0002] In the new era, to achieve the goal of energy conservation and emission reduction, it is necessary not only to analyze the current energy consumption, but also to have a relatively clear and accurate forecast of the city's future energy consumption demand, so as to formulate reasonable and effective energy policies in advance. This urgent need gave birth to the method of "urban energy consumption simulation". [0003] Urban energy consumption simulation is a "bottom-up" simulation method based on physical models. By establishing a three-dimensional model of the city and giving it a lot of information including thermal parameters of the envelope structure, equipment system parameters, personnel...

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Problems solved by technology

[0005] The problem to be solved by the present invention is: the existing method for obtaining the window-to-wall ratio of a building is not accurate, or the implementation cost is too expensive to be extended to the modeling of a large number of urban buildings. Accurate and universal information acquisition method for urban building window-to-wall ratio, providing technical support for urban energy consumption simulation research

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