An anomaly region marking method for industrial process based on weighted median filter
A weighted median and abnormal area technology, which is applied in the direction of instruments, character and pattern recognition, computer components, etc., can solve the problems of difficult to obtain sparse marking of working condition label data, low efficiency of manual marking, long time required, etc., to achieve Save manpower and material resources, improve accuracy, and promote the effect of application
Active Publication Date: 2018-12-25
NORTHEASTERN UNIV
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However, such methods need to use video images as input data and label data to train the network, and then adjust network parameters through data that contains both input and label data, so synchronously sampled working condition video data and a large number of working condition label data are required.
Although the video image data can be obtained in real time at a high rate, the label data of the corresponding period of time is often sparsely marked and difficult to obtain
At present, there is no method to quickly generate labeled data. The existing method is to manually judge whether a semi-melting condition occurs, and then artificially label each frame of the training set video sequence
Manually making label data not only requires a lot of manpower and high cost, but also takes a long time due to the low efficiency of manual labeling
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[0024] The invention will be further described below in conjunction with the accompanying drawings and specific implementation examples: the embodiment of the present invention is a fused magnesia furnace of a fused magnesia production plant, and the image data of the furnace wall of the fused magnesia furnace at the production site is collected as experimental data, and the data is resolved rate, where the first two dimensions are the spatial dimensions in the horizontal and vertical directions, respectively, and the last dimension is the time dimension, that is, the number of video frames.
[0025] The flowchart implemented in this embodiment is as follows figure 1 As shown, the specific process is as follows:
[0026] Step 1: Obtain a video image sequence in RGB format, and convert the video image sequence in RGB format into a grayscale video image, such as figure 2 As shown, it is a grayscale image at 200 frames;
[0027] Step 2: Sparse and rough labeling of video image...
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The invention provides a method for marking abnormal region of industrial process based on weighted median filter, in particular comprising the following steps: obtaining a video image sequence of anRGB format, converting the video image sequence of an RGB format into a gray-scale video image; video image sequence sparse rough marking; sparse coarse marker propagation; optimizing the rectangularmarker regions of all video images; obtaining final label data; By manually marking only the start frame and the end frame of a video sequence, it is possible to mark the half-melting condition in thewhole video sequence and obtain the tag data, so that a large amount of data with the half-melting tag can be quickly obtained. In the diagnosis of semi-melting condition, a large number of labeled data improve the training accuracy of the model, and then improve the accuracy of diagnosis. Promote the application of diagnostic technology in the industrial field, save manpower and material resources, reduce the potential safety hazards.
Description
technical field [0001] The invention belongs to the technical field of fault diagnosis, in particular to a method for marking abnormal regions of industrial processes based on weighted median filtering. Background technique [0002] Fused magnesia, also known as fused magnesia (MgO), has the characteristics of high melting point, strong structure, strong insulation, and good oxidation resistance. It is an important refractory material in many industries such as metallurgy, chemical industry, electrical equipment, and aerospace. At present, its production process is mainly to use a three-phase AC electric fused magnesia furnace to heat and melt magnesite ore to obtain MgO melt, and then obtain high-purity fused magnesia through cooling and crystallization. The abnormal working condition of the semi-melting of the fused magnesium furnace is caused by the condensation of the high-temperature magnesium oxide melt on the inner wall of the furnace shell, and the phenomenon that th...
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IPC IPC(8): G06K9/20G06K9/32G06K9/00
CPCG06V20/40G06V10/22G06V10/245
Inventor 刘强孔德志吴高昌柴天佑
Owner NORTHEASTERN UNIV