Abstract
This paper introduces a system that can estimate the deformation process of a deformed flat object (folded plane) and generate the input data for a robot with human-like dexterous hands and fingers to reproduce the same deformation of another similar object. The system is based on processing RGB data and depth data with three core techniques: a weighted graph clustering method for non-rigid point matching and clustering; a refined region growing method for plane detection on depth data based on an offset error defined by ourselves; and a novel sliding checking model to check the bending line and adjacent relationship between each pair of planes. Through some evaluation experiments, we show the improvement of the core techniques to conventional studies. By applying our approach to different deformed papers, the performance of the entire system is confirmed to have around 1.59 degrees of average angular error, which is similar to the smallest angular discrimination of human eyes. As a result, for the deformation of the flat object caused by folding, if our system can get at least one feature point cluster on each plane, it can get spatial information of each bending line and each plane with acceptable accuracy. The subject of this paper is a folded plane, but we will develop it into a robotic reproduction of general object deformation.
Highlights
This paper introduces a system that can estimate the deformation process of a deformed flat object and generate the input data for a robot with human-like dexterous hands and fingers to reproduce the same deformation of another similar object
In order to evaluate the improvement of our weighted graph clustering method on the robustness, we compare our approach with the unweighted-graph method of [41] under different conditions such as different degrees of deformation, different objects, and occlusions
This paper has introduced a system that can estimate the deformation process of a deformed flat object and generate the input data for a robot with human-like dexterous hands and fingers to reproduce the same deformation of another similar object
Summary
This paper introduces a system that can estimate the deformation process of a deformed flat object (folded plane) and generate the input data for a robot with human-like dexterous hands and fingers to reproduce the same deformation of another similar object. This paper proposes three core techniques and verifies their effectiveness. By applying these three core techniques to RGB data and depth data, our system can estimate the equations of each bending line, the equations of each plane, and the range of each plane with acceptable accuracy in the camera coordinate system. Our system can generate the input data for a robot with human-like dexterous hands and fingers to perform the same deformation in the future
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