Automobile circular trailer hole gas mark defect detection method based on machine vision

The invention relates to the technical field of image processing, in particular to an automobile circular trailer hole gas mark defect detection method based on machine vision. The method comprises the following steps: acquiring a candidate grayscale image of a circular trailer hole of an automobile...

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Bibliographische Detailangaben
Hauptverfasser: LUO DAOBAO, WANG XUANXUAN, FANG LEI, ZHAI HUIYING, CHEN XIAOQIANG, LIU MINGKU, HU XIN
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention relates to the technical field of image processing, in particular to an automobile circular trailer hole gas mark defect detection method based on machine vision. The method comprises the following steps: acquiring a candidate grayscale image of a circular trailer hole of an automobile, identifying abnormal pixel points of the candidate grayscale image, and acquiring a retention necessity degree of a search area according to a target distance between each abnormal pixel point and other abnormal pixel points in the same column as the abnormal pixel point and an information entropy of the search area; according to the retention necessity degree, obtaining an adjustment factor of an initial non-local mean filtering parameter of the search area so as to adjust the initial non-local mean filtering parameter to obtain a target non-local mean filtering parameter, and carrying out filtering processing on the search area to obtain a target grayscale image; and according to the target gray level image, ca