基于視覺的家居服務(wù)機(jī)器人物體感知研究
[Abstract]:With the development of society and the increasingly serious problem of aging, the demand for home service robots is becoming more and more urgent. Good object perception ability is the premise of intelligent operation for home service robots, and it is also a research focus in the field of machine vision. The unstructured home environment, the variety of objects, the arbitrary placement of objects in different positions, the mutual contact and occlusion between multiple objects, and the fuzziness of the images caused by robot motion. And real-time requirements have brought a lot of difficulties to robot object perception. The main research contents of this paper are as follows: firstly, a complete object recognition system of home service robot is designed and implemented based on SURF features. It mainly includes three processes: feature point detection, feature point description and feature point matching, and improves the mismatching problem. RANSAC algorithm is used for matching purification, which effectively eliminates the mismatching. The hardware platform of the robot is built and the recognition experiment is carried out in the indoor unstructured environment. The results show that the method has good robustness, but the real-time performance needs to be improved. Secondly, in order to further improve the performance of the system, a robot object recognition algorithm based on salient area guidance is proposed. Through the visual selective attention mechanism, the significant region in the image is selected, the SURF feature of the significant region is extracted, and the recognition of the target object in the scene is realized by matching the feature points. The experimental results show that compared with the traditional SURF algorithm, the recognition rate and recognition speed of the improved algorithm are effectively improved. Finally, in order to solve the problem that the traditional Camshift algorithm needs to select and track the target manually, an unsupervised object tracking algorithm for home service robot based on detection is proposed. SURF feature matching is used to automatically find the target object, and the automatic tracking is realized. In order to solve the problem that the traditional Camshift algorithm is vulnerable to similar color interference, SURF features are integrated into the framework of Camshift algorithm, and a Camshift object tracking algorithm based on SURF features is proposed. The experimental results show that the algorithm can effectively solve the problem of tracking failure of the traditional Camshift algorithm in the context of similar color to the target.
【學(xué)位授予單位】:河北工業(yè)大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:TP391.41;TP242
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