齿轮缺角 引脚缺失 图像去噪

1.案例? 齿轮缺角

1.预留图形预处理工具

1.边缘提取工具

利用copyRegin工具 实现 齿轮环 分割效果 为blob分析 齿轮缺失做准备

1和2 把 blob中的灰度图添加到 copyRegin的俩个图像输入参数中

3.把blob匹配结果中心坐标给copyRegin 匹配区域坐标

4.设置填充数值? 128?? 目的? 为了 使填充的区域灰度值和 目标图像背景灰度值 一致

5.填充区域设置

6.区域外 调整像素 调整为 不写入像素?

1.勾选使用图像配对

1.运行

2.运行后最终效果??? （此 图效果? 可以清晰的匹配 每个齿轮）

1.使用blob工具

2.设置参数

3.匹配效果图

?根据blob分析的结果数 来判断是否 缺失齿轮

#region namespace imports
using System;
using System.Collections;
using System.Drawing;
using System.IO;
using System.Windows.Forms;
using Cognex.VisionPro;
using Cognex.VisionPro.ToolBlock;
using Cognex.VisionPro3D;
using Cognex.VisionPro.ImageProcessing;
using Cognex.VisionPro.PMAlign;
using Cognex.VisionPro.Blob;
#endregion

public class CogToolBlockAdvancedScript : CogToolBlockAdvancedScriptBase
{
? #region Private Member Variables
? private Cognex.VisionPro.ToolBlock.CogToolBlock mToolBlock;
? #endregion
?
? //定义图形集合
? CogGraphicLabel label = new CogGraphicLabel();
?
? public override bool GroupRun(ref string message, ref CogToolResultConstants result)
? {

???? ?
?? ?
??? int count = (int)mToolBlock.Inputs["Count"].Value;
??? CogBlobTool blob = mToolBlock.Tools["CogBlobTool2"] as CogBlobTool;

??? // Run each tool using the RunTool function
??? foreach(ICogTool tool in mToolBlock.Tools)
????? mToolBlock.RunTool(tool, ref message, ref result);
?? ?
??? //获取blob结果个数
??? int currentCount = blob.Results.GetBlobs().Count;
??? //获取齿轮差值
??? int diff = count - currentCount;
?? ?
?? ????
??? string res = "";
??? label.Color = CogColorConstants.Green;
??? label.Font = new Font("宋体", 20);
??? //根据差值判断是否有缺失
??? if (diff > 0)
??? {
????? res = "缺失：" + diff;
????? label.Color = CogColorConstants.Red;
??? }
??? else
??? {
????? res = "良品";
???? ?
??? }
??? label.SetXYText(100, 250, res);
??? return false;
? }

??public override void ModifyLastRunRecord(Cognex.VisionPro.ICogRecord lastRecord)
? {
??? mToolBlock.AddGraphicToRunRecord(label, lastRecord, "CogIPOneImageTool1.InputImage", "Script");
? }

1使用cogIPoneImage去掉背景图中的白色噪点

2.添加灰阶形态NxM? 内核高度与宽度 设置? 3 x3

1.使用blob? 匹配出图像中的引脚

1.设置过滤参数

1.使用卡尺工具? 测量每个引脚距离? 目的:检测是否有缺失的引脚

#region namespace imports
using System;
using System.Collections;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Windows.Forms;
using Cognex.VisionPro;
using Cognex.VisionPro.ToolBlock;
using Cognex.VisionPro3D;
using Cognex.VisionPro.ImageProcessing;
using Cognex.VisionPro.Blob;
using Cognex.VisionPro.Caliper;
#endregion

public class CogToolBlockAdvancedScript : CogToolBlockAdvancedScriptBase
{
? #region Private Member Variables
? private Cognex.VisionPro.ToolBlock.CogToolBlock mToolBlock;
? #endregion
? //声明图形集合
? private CogGraphicCollection col = new CogGraphicCollection();
? //声明BlobTool成员变量
? CogBlobTool blob;
? // 声明卡尺工具成员变量
? CogCaliperTool cal1;
? public override bool GroupRun(ref string message, ref CogToolResultConstants result)
? {
??? // To let the execution stop in this script when a debugger is attached, uncomment the following lines.
???? #if DEBUG
???? if (System.Diagnostics.Debugger.IsAttached) System.Diagnostics.Debugger.Break();
???? #endif

?
??? //映射blob
??? blob = mToolBlock.Tools["CogBlobTool1"] as CogBlobTool;
??? //映射卡尺工具
??? cal1 = mToolBlock.Tools["CogCaliperTool1"] as CogCaliperTool;

??? //判断是否有图形缺陷? true 为无缺陷? false反之
??? bool b = true;

??? //清空图形集合
??? col.Clear();
??? // Run each tool using the RunTool function
??? foreach(ICogTool tool in mToolBlock.Tools)
????? mToolBlock.RunTool(tool, ref message, ref result);
?? ?
?? ?
??? //
??? for (int i = 0; i < blob.Results.GetBlobs().Count; i++)
??? {
????? //获取角度
????? double angle = Math.Abs((blob.Results.GetBlobs()[i].Angle) * 180 / Math.PI);
???? ?
????? //通过角度大小判断是否NG
????? if (Math.Abs(angle- 90) > 5)
????? {
??????? //初始化
??????? CogPolygon polygon = new CogPolygon();
??????? polygon = blob.Results.GetBlobs()[i].GetBoundary();
??????? polygon.Color = CogColorConstants.Red;
?????? ?
??????? col.Add(polygon);
??????? b = false;
????? }
?????? ?
???? ?
????? //获取blob检测的高度
????? double h = blob.Results.GetBlobs()[i].GetMeasure(CogBlobMeasureConstants.BoundingBoxExtremaAngleHeight);
????? //通过Y坐标判断? 斑点在上方还是下方
????? //上方
????? if (blob.Results.GetBlobs()[i].CenterOfMassY < 220)
????? {
??????? //判断高度 大于110或者小于90? 上方特征有缺陷
??????? if (h > 110 || h < 90)
??????? {
????????? //
????????? CogPolygon polygon = new CogPolygon();
????????? polygon = blob.Results.GetBlobs()[i].GetBoundary();
????????? polygon.Color = CogColorConstants.Red;
????????? col.Add(polygon);
????????? b = false;
??????? }
????? }
??????? //下方
????? else if(blob.Results.GetBlobs()[i].CenterOfMassY > 220)
????? {
??????? //判断高度 大于65或者小于50? 下方特征有缺陷
??????? if (h > 65 || h < 50)
??????? {
???????? ?
????????? //初始化边界显示线
????????? CogPolygon polygon = new CogPolygon();
????????? polygon = blob.Results.GetBlobs()[i].GetBoundary();
????????? polygon.Color = CogColorConstants.Red;
????????? //添加到图形集合工具
????????? col.Add(polygon);
????????? b = false;
??????? }
????? }
??? }
?? ?
?? ?
?
??? //卡尺判断间距? 判断引脚是否有缺失
??? ?
??? //初始化泛型集合
??? List<double> listX = new List<double>();
?? ?
??? //循环 卡尺工具结果个数
??? for (int j = 0; j < cal1.Results.Count; j++)
??? {
???? ?
????? //添加每个结果X坐标点到泛型集合中
????? listX.Add(cal1.Results[j].Edge0.PositionX);
??? }
??? listX.Sort();//升序??? 目的:把做升序排列? 方便后续 进行差值计算
???? ?
?? ?
?? ?
??? for (int i = 0; i < listX.Count - 1; i++)
??? {
???? ?
????? //相邻坐标点求 差值
????? double width = listX[i + 1] - listX[i];
????? //差值大于80? 证明引脚有缺失
????? if (width > 80)
????? {
?????? ?
??????? //初始化图形限定框
??????? CogRectangleAffine rec = new CogRectangleAffine();
??????? //限定款位置
??????? rec.CenterX = (listX[i + 1] + listX[i]) / 2;
??????? rec.CenterY = cal1.Results[i].Edge0.PositionY;
??????? rec.SideXLength = width;
??????? rec.SideYLength = 100;
??????? rec.Color = CogColorConstants.Red;
??????? //添加到图形集合工具
??????? col.Add(rec);
??????? b = false;
????? }
??? }
?? ?
??? //初始化label 显示NG 或者OK信息
??? CogGraphicLabel label = new CogGraphicLabel();
??? label.Font = new Font("微软雅黑", 20);
??? if (b)
??? {
????? label.SetXYText(100, 80, "OK");
????? label.Color = CogColorConstants.Green;
??? }
??? else
??? {
????? label.SetXYText(100, 80, "NG");
????? label.Color = CogColorConstants.Red;
??? }
??? //添加到图形集合工具
??? col.Add(label);
??? return false;
? }

?public override void ModifyLastRunRecord(Cognex.VisionPro.ICogRecord lastRecord)
? {
??? for (int i = 0; i < col.Count; i++)
??? {
????? mToolBlock.AddGraphicToRunRecord(col[i], lastRecord, "CogIPOneImageTool1.InputImage", "Script");
??? }
? }?

1.图像去噪 ?

中值Nxm： 内核高度和宽度? 设置 7x7 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? 消除干扰像素??

灰度形态调整：设置腐蚀 ?? 来缩小白色区域? 扩大黑色区域??? 加粗字体效果