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Mathematical model of transforming image elements to structured data based on BP neural network


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Fig. 1

Schematic diagram of insulator infrared experimental device.
Schematic diagram of insulator infrared experimental device.

Fig. 2

Colour histogram of a single piece of degraded/standard insulator.
Colour histogram of a single piece of degraded/standard insulator.

Fig. 3

Colour moment distribution diagram of a single piece of degraded/standard insulator.
Colour moment distribution diagram of a single piece of degraded/standard insulator.

Fig. 4

BP neural network model.
BP neural network model.

Fig. 5

BP neural network prediction and actual value comparison under the colour histogram.
BP neural network prediction and actual value comparison under the colour histogram.

Fig. 6

Typical missed patterns under the colour histogram algorithm.
Typical missed patterns under the colour histogram algorithm.

Fig. 7

Comparison of BP neural network prediction results and actual values under colour moments.
Comparison of BP neural network prediction results and actual values under colour moments.

Fig. 8

Typical missed detection pattern under the colour moment algorithm.
Typical missed detection pattern under the colour moment algorithm.

Fig. 9

Comparison of BP neural network prediction results and actual values under the colour matrix of the insulator centre line.
Comparison of BP neural network prediction results and actual values under the colour matrix of the insulator centre line.

Fig. 10

Typical missed detection pattern under the colour matrix of the centreline of the insulator.
Typical missed detection pattern under the colour matrix of the centreline of the insulator.

Comprehensive comparison of three diagnostic methods

Feature amount Training time/s-1 Forecast accuracy rate/% Overview
Colour histogram 590.160333 87.58 Short training time, average prediction accuracy
Colour moment 10.764295 87.82 Longest training time, average prediction accuracy
Centreline colour matrix 46.679 750, 93.37 Short training time and high prediction accuracy

Comparison of the accuracy of the number of neurons in different hidden layers

Number of input neurons Colour moment accuracy rate/% Colour histogram accuracy rate/% Centreline colour matrix accuracy rate/%
5 86.87 83.88 93.37
10 87.82 87.58 93.37
15 87.70 85.37 93.13
20 87.76 82.69 93.13
30 87.88 85.67 92.84

Diagnosis results based on the feature amount of the colour histogram

Serial number 1 2 3 4 5 Average
Accuracy/% 86.27 87.16 88.06 88.66 87.76 87.58

Diagnosis results based on the colour moment feature quantity

Serial number 1 2 3 4 5 Average
Accuracy/% 88.06 86.87 89.25 88.36 86.57 87.82

Table 4 Diagnosis results based on the colour matrix of the centreline of the insulator

Serial number 1 2 3 4 5 Average
Accuracy/% 93.43 93.73 92.84 93.43 93.43 93.37
eISSN:
2444-8656
Język:
Angielski
Częstotliwość wydawania:
Volume Open
Dziedziny czasopisma:
Nauki biologiczne, inne, Matematyka, Matematyka stosowana, Matematyka ogólna, Fizyka