Panoramic image splicing method for curtain wall building facade

Active Publication Date: 2020-05-22
TONGJI UNIV
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Problems solved by technology

[0007] The purpose of the present invention is to overcome the shortcomings of the existing feature-based image mosaic technology in the application effect of the curtain wall building is poor or can not be spliced, and propose a panoramic image mosaic idea and method for the façade of the curtain wall building

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  • Panoramic image splicing method for curtain wall building facade
  • Panoramic image splicing method for curtain wall building facade
  • Panoramic image splicing method for curtain wall building facade

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be pointed out that the implementation scheme uses the following known algorithms: SIFT feature point recognition algorithm, fast nearest neighbor search algorithm, MSAC algorithm, L-M (Levenberg-Marquard) algorithm, optimal seam search algorithm based on dynamic programming, etc., but not limited on these algorithms.

[0032] The main flow chart is as figure 1 shown.

[0033]S1. Obtain the image sequence of the curtain wall structure taken by the optical imaging device. The sequence of the image sequence is arranged according to the shooting sequence of the building facade from bottom to top, and the sequenced image sequence is provided to S2.

[0034] S2. Perform conventional technical preprocessing on the input image sequence, inclu...

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Abstract

A panoramic image splicing method for a curtain wall building facade comprises the following steps: obtaining a high-definition image sequence of the curtain wall building fa ade, performing image preprocessing, determining an ROI (Region of Interest) of the image, extracting feature points of the key region of the facade by using a visual feature recognition algorithm, calculating and dividing anoverlapping region between the image sequences, removing irrelevant feature points, performing preliminary registration, estimating feature point registration model parameters to complete accurate registration of the feature points between different images and solution of a homography transformation matrix, correcting and optimizing a transformation model, determining an optimal splicing seam, and performing image splicing. According to the method, the defect that a traditional panoramic image splicing algorithm is difficult to apply to scenes such as glass curtain wall buildings is overcome,and an efficient method is provided for curtain wall building appearance quality damage detection and evaluation.

Description

technical field [0001] The invention relates to the field of structural health monitoring and the technical field of image feature recognition and registration, in particular to a panoramic image splicing method for facades of curtain walls. Background technique [0002] Computer vision has developed rapidly in recent years and has become one of the most popular artificial intelligence directions. Image mosaic is a research hotspot in the field of computer vision and image processing. It is to spatially register multiple image sequences with overlapping areas, and form a wide-view scene, high-resolution image that contains the information of each image sequence after image fusion. resolution image. A complete and feasible set of panoramic high-definition image stitching methods for scenes such as curtain wall buildings has not yet been seen. [0003] As the key and core of image stitching technology, image registration is to solve the affine transformation model between im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/40G06K9/46G06T7/33
CPCG06T3/4038G06T7/33G06V10/462Y02T10/40
Inventor 单伽锃程凯
Owner TONGJI UNIV
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