Automatic Recognition of Repeating Patterns in Rectified Facade Images
نویسندگان
چکیده
Building facades typically consist of multiple similar tiles which are arranged quite strictly in grid-like structures. The proposed method takes advantage of translational symmetries and is able to analyze and segment facades into tiles assuming that there are horizontal and vertical repetitions of similar tiles. In order to solve this quite complex computer vision task efficiently a Monte Carlo approach is presented which samples only selected image features. This method, which is meant to be a preprocessing step for more sophisticated tile segmentation and window identification in urban reconstruction tasks, is able to robustly identify orthogonal repetitive patterns on rectified facade images even if they are partially occluded, shadowed, blurry or otherwise damaged. Additionally, the algorithm is very running time efficient because neither quality of results nor the computational complexity are significantly depending on the image size.
منابع مشابه
Automatic Extraction of Regular Grids from Rectified Facade Image
Automation of facade images interpretation is a crucial task for efficient 3D modeling of urban areas. Information about regularities in facade images can be used for image completion of texture areas occluded with foreground objects, 3D model compression and texture quality enhancement. Existing approaches cannot handle the whole variety of buildings facades and often fail in cases of occluded...
متن کاملAutomatic Face Recognition via Local Directional Patterns
Automatic facial recognition has many potential applications in different areas of humancomputer interaction. However, they are not yet fully realized due to the lack of an effectivefacial feature descriptor. In this paper, we present a new appearance based feature descriptor,the local directional pattern (LDP), to represent facial geometry and analyze its performance inrecognition. An LDP feat...
متن کاملAutomatic Feature Recognition Technique on Stone Monuments Using Visible and IR Photography
Visible photography has long been used in the field of architecture for documentation and restoration tasks. However, the automatic extraction and analysis of facade features, i. e. materials and alterations, is unusual in most of multidisciplinary teams involving documentation, conservation and restoration projects. This paper shows the profitability of applying digital image analysis on stone...
متن کاملFacade Interpretation Using a Marked Point Process
Our objective is the interpretation of facade images in a top-down manner, using a Markov marked point process formulated as a Gibbs process. Given single rectified facade images, we aim at the accurate detection of relevant facade objects as windows and entrances, using prior knowledge about their possible configurations within facade images. We represent facade objects by a simplified rectang...
متن کاملThe Effectiveness of the Automatic System of Fuzzy Logic-Based Technical Patterns Recognition: Evidence from Tehran Stock Exchange
The present research proposes an automatic system based on moving average (MA) and fuzzy logic to recognize technical analysis patterns including head and shoulder patterns, triangle patterns and broadening patterns in the Tehran Stock Exchange. The automatic system was used on 38 indicators of Tehran Stock Exchange within the period 2014-2017 in order to evaluate the effectiveness of technical...
متن کامل