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| 基于Shi-Tomasi的太赫兹人体图像边缘物体识别 |
| Edge object recognition of terahertz human image based on Shi-Tomasi |
| 投稿时间：2020-12-24 |
| DOI：10.3969/j.issn.1005-5630.2021.03.003 |
| 中文关键词: 太赫兹成像 Shi-Tomasi算子 角点提取 边缘物体识别 |
| 英文关键词:terahertz imaging Shi-Tomasi operator corner extraction edge object recognition |
| 基金项目: |
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| 摘要点击次数: 1986 |
| 全文下载次数: 1728 |
| 中文摘要: |
| 为了提高太赫兹安检系统对人体图像边缘物体识别的准确率，提出了一种基于Shi-Tomasi算子的角点特征识别算法。首先对原始图像进行预处理，经二值化、腐蚀膨胀、边缘平滑后消除人体轮廓中孤立的噪声和边缘刺峰；然后将Shi-Tomasi算子筛选后的人体轮廓强角点与垂直方向阈值范围内的相邻角点连线，并根据连线两侧遍历像素变化点，最后通过比对背景侧数值实现人体边缘物体的识别。实验结果表明，该算法识别速度快，对人体边缘物体的识别率高于98%，能够应用于太赫兹人体图像边缘物体的识别。 |
| 英文摘要: |
| In order to improve the accuracy of terahertz security system in image recognition of human body edge objects, a corner feature recognition algorithm based on Shi-Tomasi operator was proposed. The algorithm dealt with the original image preprocessing, the binarization, corrosion expansion and edge smooth after eliminating the body contour in the isolated noise and the edge of the peak. Then, the Shi-Tomasi operator was used for strong corner threshold and vertical direction within the scope of the adjacent corner point of attachment. According to the attachment on both sides of the cross point, body edge recognition was realized. Experiments show that the algorithm has a fast recognition speed and a recognition rate of more than 98% for human body edge recognition. It is suitable for the recognition of object edges in the terahertz images. |
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