A Performance Criterion for the Depth Estimation of a Robot Visual Control System
نویسندگان
چکیده
In this paper we propose a performance criterion for the depth estimation of an active vision system. It is well-known that the linear velocity of the camera must satisfy some constraints for a success of the depth estimation. However, these constraints cannot ensure a good convergence performance of the depth estimation. Our criterion is an extension from an estimation result of a linear system. Furthermore, we use it to develop a new visual servo control scheme that has good performance in both the depth estimation and the visual control. Finally, experiments and simulation results of a visual application verify our proposition.
منابع مشابه
Simulation of Position Based Visual Control and Performance Tests of 6R Robot
This paper presents simulation and experimental results of position-based visual servoing control process of a 6R robot using 2 fixed cameras. This method has the ability to deal with real time changes in the relative position of the target-object with respect to robot. Also, greater accuracy and independency of servo control structure from the target pose coordinates are the additional advanta...
متن کاملA performance criterion for the depth estimation with application to robot visual servo control
This article deals with the depth observability problem of a robot visual system with a moving camera. In the visual system, the unknown depth of a feature point is estimated from the input of the camera velocity and the output of the image of the feature point. Although it is well known that the linear velocity of the camera must satisfy some constraints for successful depth estimation, this p...
متن کاملCamera Arrangement in Visual 3D Systems using Iso-disparity Model to Enhance Depth Estimation Accuracy
In this paper we address the problem of automatic arrangement of cameras in a 3D system to enhance the performance of depth acquisition procedure. Lacking ground truth or a priori information, a measure of uncertainty is required to assess the quality of reconstruction. The mathematical model of iso-disparity surfaces provides an efficient way to estimate the depth estimation uncertainty which ...
متن کاملBall Trajectory Estimation and Robot Control to Reach the Ball Using Single Camera
In robotics research, catching a projectile object with a robotic system is one of the challenging problems. The outcome of these researches can be used in a wide range of applications such as video surveillance systems, analysis of sports videos, monitoring programs for human activities, and human-machine interactions. In this paper, we propose a new vision-based algorithm to estimate the traj...
متن کاملEstimation of metallurgical parameters of flotation process from froth visual features
The estimation of metallurgical parameters of flotation process from froth visual features is the ultimate goal of a machine vision based control system. In this study, a batch flotation system was operated under different process conditions and metallurgical parameters and froth image data were determined simultaneously. Algorithms have been developed for measuring textural and physical froth ...
متن کامل