Panasonic MICRO-IMAGECHECKER PV310 Use Manual

Also see for Micro-Imagechecker PV310: Brochure & specs

102Setting CheckersChapter 67. Press "Edge Thresh.".What is Edge Threshold?This is a value to decide whether to detect or not as an edge according tothe degree of the gray value change.The Gray Edge function calculates a "differential value" that are the degreeof brightness change based on the gray value of each pixel. If the portionhaving the absolute value of the differential value that is more than "EdgeThreshold" value, it is regarded as a detection edgeExample:EdgeThresholdDetect Count Objects15 6Whole edges are detected70 2Detects 2 edges in the middleobject150 0You should set an edge threshold value checking the differential value of the detected edges under theResult tab.8. Select "Detect Position".Select "Front", "Peak", "Plural", or "Front/Rear" from the menu.Detect Position:In the case where there are multiple portions matching the conditions, set a portion that is detected as anedge.Setting ofDetectionPositionEdge to be detected Edge to bedetectedFront Outputs the nearest portionfrom the start point as anedgeA (1 edge)Peak Outputs the portion havingthe highest absolute valueof the differential value asan edge.C (1 edge)Plural Outputs all portions as anedge.A - F(6 edges)Front/ Rear Outputs the nearest portionfrom the start point or fromthe end point.A and F(2 edges)