地测PSIM:通过地测补丁相似性通过纹理地图预测静态网格的质量.
概括
一个新的指标Geodesic Patch Similarity (GeodesicPSIM) 准确地预测了纹理3D网格的感知质量. 这种基于模型的方法考虑了几何和颜色,优于现有的方法.
科学领域:
- 计算机图形 计算机图形
- 计算机视觉 计算机视觉
- 多媒体处理处理.
背景情况:
- 静态网格与纹理图的客观质量评估对于工业和学术应用至关重要.
- 现有的基于模型的指标经常忽略颜色信息或具有严格的拓约束.
- 基于图像和基于点的指标容易受到预处理工件的影响.
研究的目的:
- 提出地质贴片相似性 (GeodesicPSIM),这是一个基于模型的新型度量,用于准确地预测人类对静态网格的感知质量,使用纹理图.
- 通过结合几何和颜色信息来解决现有指标的局限性.
- 为纹理3D模型开发一个强大而有效的客观质量评估方法.
主要方法:
- 使用选定的关键点和网格清理算法,从参考和扭曲的网格构建 1-hop 地测补丁.
- 使用两步补丁裁剪和纹理映射模块来改进补丁,并将几何与颜色信息集成在一起.
- 提取三个特征:补丁颜色的光滑度,离散平均曲率和像素颜色的平均/变异.
主要成果:
- 在一个新的具有挑战性的数据库上,PSIM展示了与基于图像,基于点和基于视频的指标相比的最先进的性能.
- 该指标显示了跨不同超参数设置的稳定性.
- 除研究证实了拟议的特征和补丁裁剪算法的有效性.
结论:
- 地测PSIM是第一个基于模型的度量,专门设计用于与纹理图的静态网格.
- 拟议的度量准确地预测感知质量,有效地利用几何和纹理信息.
- 地测PSIM为3D图形中的客观质量评估提供了强大而准确的解决方案.
更多相关视频
相关概念视频
01:29Plotting of Topographic Maps
33
Topographic maps represent the Earth's surface features using contour lines, which connect points of equal elevation to create a two-dimensional representation of three-dimensional terrain. Creating a topographic map requires a systematic approach.Begin by plotting a scaled grid and marking intersections corresponding to the survey's elevation data points. Assign elevation values at these intersections to build the base map. Next, determine contour levels using a consistent contour interval,...
33
01:25Shape and Texture of Coarse Aggregate
187
Aggregate shape is classified based on the relative sharpness or roundness of the edges and corners. This classification includes categories like rounded, angular, elongated, and flaky, each with specific characteristics. Rounded aggregates, fully shaped by attrition, are typical of river or seashore gravel, while angular aggregates, such as crushed rock, have well-defined edges. Aggregates that are elongated and flaky are less desirable, as they can reduce the workability and strength of...
187
01:12Modeling and Similitude
213
Scaled modeling is a fundamental technique in engineering, enabling the study of large and complex systems by creating smaller, manageable replicas that recreate critical characteristics of the original. In hydrology and civil infrastructure, for example, scaled models of dams help analyze water flow, turbulence, and pressure. This method allows for accurate predictions of real-world behavior within a controlled environment, significantly reducing the cost and time involved in full-scale...
213