Patent ID: 11922643
Assignee: nan
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 8:
9. The method for intelligently measuring vehicle speed based on the binocular stereo vision system according to claim 6, wherein the distance measurement method of the binocular stereo vision system in step 5 comprises: calculating the distance di of all N matching points respectively; calculating the mean value μ and the standard deviation σ of di; calculating the Z score Zi for each matching point:, μ
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    σ, eliminating m1 matching points with the absolute values of Z score |Zi|>1; choosing the matching point i closest to the center of the license plate from the remaining N−m1 matching points; and taking coordinates of the matching point i as the position Pi of the target vehicle in current frame.