基于相位一致性的转炉出钢下渣检测方法

针对当前转炉出钢下渣检测系统检测准确性不高、使用寿命短、安装维护困难等问题,提出基于相位一致性的红外下渣检测方法.通过对转炉出钢下渣过程和钢水钢渣混流图像特征的研究,构造改进的相位一致性模型,并利用正交的log Gabor滤波器组求解模型.该算法很好克服传统边缘检测方法容易受到亮度、对比度以及噪声影响的缺点,能够检测到清晰并且连续的钢渣边缘.工业现场试验结果表明,该方法在提高红外转炉出钢检测系统的检测准确率和控制钢包渣厚两方面效果明显. 关键词：

Converter tapping slag detection method based on phase congruency

In order to solve some problems of converter tapping slag detection system, such as low accuracy, short service life, inconvenient installation and maintenance, a new infrared slag detection method based on phase congruency was developed. Through analyzing the process details of converter tapping and the characteristics of the molten steel and slag mixed image, a new model with phase congruency was constructed and the model was calculated via log Gabor filters in quadrature. The traditional edge detection methods are vulnerable to the brightness, contrast and noise, while this algorithm based on phase congruency can overcome such shortcomings and detect a clear and continuous edge of slag. Industrial test results show that the method is effective to improve accuracy of infrared slag detection system and control thickness of slag in ladle.