首页|形状基视觉传达约束下三维图像重构算法改进

形状基视觉传达约束下三维图像重构算法改进

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由于忽略了图像以真实性为准则的视觉传达需求,导致以形状基重构为主的相关方法效果不佳.为此,从视觉约束性出发,改进三维图像重构算法.分割、筛选所采集的目标点云数据,构建数据集.利用局部空间差分算法求解各像素值,并获得形状基约束性的像素值差分系数填充像素,以赋予各点云数据视觉传达约束性.以基于改进量子粒子群的k-means聚类算法和基于数字特征的二型熵模糊C均值聚类算法为基本算法,通过聚类目标区域和背景区域的数据,转换实际目标坐标系和重构图像坐标系,完成不同尺度、不同角度的三维图像重构.结果表明,所提方法重构的图像更贴合目标建筑的实际信息,符合图像的视觉传达需求,且峰值信噪比始终高于85 dB,均方误差均低于70 pixel,重构效果优越性显著.
Improvement of 3D Image Reconstruction Algorithm under Shape-based Visual Communication Constraints
Due to the neglect of the visual communication requirement of image authenticity as the criterion,the related methods with shape-based reconstruction have poor results.Therefore,the 3D image reconstruction algorithm is improved from visual constraints.This paper segments and filters the collected target point cloud data,and constructs a dataset.The local spatial difference algorithm is used to solve for each pixel value,and shape-based constraint pixel value difference coefficients are ob-tained to fill the pixels,which gives visual communication constraints to point cloud data.The k-means clustering algorithm based on improved quantum particle swarm and the type-2 entropy fuzzy C-means clustering algorithm based on digital features are used as the basic algorithms.By clustering the data of the target area and background area,an actual target coordinate sys-tem is transformed,and the reconstructed image coordinate system is reconstructed to achieve 3D image reconstruction at dif-ferent scales and angles.The results show that the reconstructed images using the proposed method are more similar to the ac-tual information of the target building,meet the visual communication needs of the images,and the peak signal-to-noise ratio is always above 85 dB,and the mean square error is below 70 pixel.The reconstruction effect is significantly superior.

visual communication constraint3D imageconstrain endowmentclustering algorithmcoordinate system trans-formationimage reconstruction

王晶、范晓鹏

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陕西青年职业学院,文化传媒系,陕西,西安 710068

西安建筑科技大学,建筑学院,陕西,西安 710055

视觉传达约束 三维图像 约束性赋予 聚类算法 坐标系转换 图像重构

2024

微型电脑应用
上海市微型电脑应用学会

微型电脑应用

CSTPCD
影响因子:0.359
ISSN:1007-757X
年,卷(期):2024.40(9)