Aiming at the problem that the structure from motion algorithm needs to change the position of the camera in the process of camera shooting, we utilize the relationship between the relative motion of the object and th...
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ISBN:
(纸本)9798350388084;9798350388077
Aiming at the problem that the structure from motion algorithm needs to change the position of the camera in the process of camera shooting, we utilize the relationship between the relative motion of the object and the camera to obtain the image sequence containing the multi-angle view of the object. A relative structure from motion is designed and realized by locating the region where the object is located in the image sequence and constraining the applicable range of feature point extraction. The experimental results show that the SFRM algorithm is applicable to the fixed position of the camera, and can increase the proportion of matched pairs located in the object region from 32% to 84% of the total number of matched pairs, and improve the time efficiency by 38.29% compared with the traditional sfm algorithm, thus successfully expanding the applicability of the sfm algorithm.
The current urban three-dimensional landscape design process is mainly based on the three-dimensional simulation of urban landscape for the overall design. How to achieve the innovation of urban three-dimensional land...
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The current urban three-dimensional landscape design process is mainly based on the three-dimensional simulation of urban landscape for the overall design. How to achieve the innovation of urban three-dimensional landscape design process with the help of green building materials is the current development trend. Based on this, this paper studies the application of green building materials in urban three-dimensional landscape design. Firstly, the three-dimensional model of urban landscape based on sfm (Structure from motion) algorithm is proposed, and the autocorrelation function is used to simulate the landscape signal. Through the maximum value of autocorrelation function curve in the process of three-dimensional reconstruction, the restoration of three-dimensional landscape is realised, and then the error of three-dimensional model is analysed. Secondly, the fuzzy evaluation method is used in the simulation evaluation, and the improved sfm three-dimensional reconstruction model is used to analyse the results of three-dimensional landscape design. Finally, the application value of different types of green building materials in urban three-dimensional landscape design is analysed through the design of three-dimensional simulation experiment.
To improve the accuracy of indoor digital landscape scene modeling and enhance its overall visual effect, this paper proposes a multi view indoor landscape scene modeling method that considers adjacent area fusion. Fi...
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Traditional means of monitoring deformation in earth and rock dams encounter challenges such as low monitoring efficiency and limited coverage. Despite the potential of emerging technologies such as GPS and three-dime...
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Traditional means of monitoring deformation in earth and rock dams encounter challenges such as low monitoring efficiency and limited coverage. Despite the potential of emerging technologies such as GPS and three-dimensional laser scanning, their adoption is expensive and hard to promote. This paper presents a deformation monitoring method for earth and rock dams based on the close-range photogrammetry technique. The proposed approach focuses on analytical algorithm the design and deployment of monitoring points, photographic schemes, camera checking and calibration, as well as deformation analysis methods. Initially, based on the analysis of the parsing algorithms' applicability, they are fused to address the shortcomings of common image parsing methods in meeting the requirements of high precision and multi-image processing for deformation monitoring of earth and rock dams. Subsequently, the fused algorithm is introduced to analyze the acquired image data for 3D reconstruction, and the deformation in earth and rock dams is assessed based on the generated dense point cloud model. The proposed deformation monitoring method is applied to Pine Bridge Reservoir Dam, and the results demonstrated its capacity to comprehensively analyze the deformation. Furthermore, the required equipment is simple and easy to operate, aligning with the requirements for deformation monitoring accuracy of earth and rock dams.
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