三焦相对姿势从线到点的三焦相对姿势
IEEE transactions on pattern analysis and machine intelligence
|October 11, 2023
概括
本研究引入了一种使用三视图和点线对应的摄像头姿势估计的新方法. 这种新的方法有效地解决了现有方法失败的复杂问题,提高了3D重建的准确性.
科学领域:
- 计算机视觉 计算机视觉
- 机器人技术 机器人技术 机器人技术
- 几何深度学习 几何深度学习
背景情况:
- 相对相机姿势估计对于3D重建和场景理解至关重要.
- 现有的方法与涉及多个视图中的点线对应的最小问题作斗争.
- 对于这些复杂的几何约束,Grobner基础方法是计算密集的.
研究的目的:
- 开发一种有效的解决方案,用于三视相对相机姿势估计中的两个最小问题.
- 解决涉及点和线对应的情况,这些对当前最先进的技术来说是难以处理的.
- 为了提高结构从运动 (SfM) 初始化的稳定性和适用性.
主要方法:
- 引入了一个名为MINUS的新型同位素延续 (HC) 解决方案框架.
- 专门的HC方法对三视图最小问题的通用案例 (三点/一行,三点/两行).
- 描述了这些最小问题的解决方案的数量.
主要成果:
- MINUS框架显著加速了用于摄像头姿势估计的HC解决.
- 模拟实验证明了图像噪声下的数值稳定性和稳定性.
- 现实世界的实验证实了SIFT特征在三视图重建中的点与线对应的有效性.
- 成功解决了具有稀疏或噪音匹配的具有挑战性的案例,在传统的SfM初始化失败的情况下.
结论:
- 拟议的HC解决方案提供了一个高效和强大的解决方案,用于挑战三视角相对相机立场估计问题.
- 这种方法扩大了SfM的功能,特别是在特征数据有限或杂的场景中.
- 这些发现有助于从多个角度进行更可靠,更准确的3D场景重建.
相关概念视频
01:29Space Trusses: Problem Solving
595
A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. Due to its adaptability and capacity to withstand complex loads, the space truss is widely used in various construction projects.
Consider a tripod consisting of a tetrahedral space truss with a ball-and-socket joint at C. Suppose the height and lengths of the horizontal and vertical...
Consider a tripod consisting of a tetrahedral space truss with a ball-and-socket joint at C. Suppose the height and lengths of the horizontal and vertical...
595
01:25Relative Motion Analysis using Rotating Axes
472
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
472
01:23Curvilinear Motion: Rectangular Components
467
Curvilinear motion characterizes the movement of a particle or object along a curved path, notably evident when envisioning a car navigating a winding road. If the car starts at point A, its position vector is established within a fixed frame of reference, where the ratio of the position vector to its magnitude signifies the unit vector pointing in the position vector's direction.
As the car advances, its position evolves over time. Quantifying the car's velocity involves computing the...
As the car advances, its position evolves over time. Quantifying the car's velocity involves computing the...
467
01:25Space Trusses
814
A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. The space truss is widely used in various construction projects due to its adaptability and capacity to withstand complex loads.
At the core of a space truss lies the fundamental unit known as the tetrahedron. This structure is composed of six members that form a three-dimensional shape...
At the core of a space truss lies the fundamental unit known as the tetrahedron. This structure is composed of six members that form a three-dimensional shape...
814
01:24Relative Motion Analysis - Velocity
382
A stroke engine has a slider-crank mechanism that converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider.
When an external force is exerted, it sets the crank into a rotational movement. This, in turn, instigates the motion of the connecting rod, leading to what is referred to as a general plane motion. This process involves two key points - point A on the connecting rod...
When an external force is exerted, it sets the crank into a rotational movement. This, in turn, instigates the motion of the connecting rod, leading to what is referred to as a general plane motion. This process involves two key points - point A on the connecting rod...
382
01:29Relative Motion Analysis using Rotating Axes-Problem Solving
408
Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
Here, in order to determine the magnitude of velocity and acceleration for point...
408