Procedure to recognize the license plate of a vehicle
Step 1 (Taking images)
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01. Iris control
Iris control based on ROI (Region Of Interest)
Environmental adaptive (EA)iris control
(Before control)
(After control)
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02. Pulse flash control by synchronizing with time for taking images
Taking optimum images for night and day with flash control
(Daytime image)
(Night image)
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03. Taking images synchronized with external sensor (RF loop sensor)
Step 2 (Image quality enhancement)
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01. denary (10~12bit) Taking image
Image quality enhancement process with our know-how
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02. Lossless Histogram bin transformation by Histogram Stretching & Normalizing
Our original technology is applied to take the optimum lossless image quality with our own algorithm to transform 10 bit images to 8 bit ones and normalizing of the range of the lost pixels so that the brightness of the pixels should be uniformed through Histogram Stretching process.
Step 3 (Recognition of license plate of a vehicle)
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01. Localization
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02. Rotating compensation
(Before)
(After)
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03. Dynamic thresholding to 2 level image
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04. Segmentation
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05. Character recognition
