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Visionpro-blob工具-骰子的应用

news 2026/5/28 13:23:14

斑点寻找工具Blob

Blob的概述

CogBlobTool 工具，俗称斑点工具；经常应用于工业的一些检测类型的项目。
斑点分析探测并且分析图像中的二维形状
Blob 是先根据用户设定好的灰阶范围对图像进行分割，然后对目标进行查找和分析
面积
质心
周长
主轴
......

应用场景

——>Blob 分析非常合适以下场合的应用:
- ——> 对象在尺寸、形状/或方向上差异很大（训练模型很难或者不可能）
- ——> 对象在背景中找不到的截然不同的灰度
- ——> 对象没有重叠或者接触
——> 应用案例：
- ——> 检查环氧树脂点分配的数量、尺寸和形状
- ——> 检查表示坏薄片模型的墨水点的正常位置和大小
- ——> 检查药片的破碎和大小
- ——> 根据对象的尺寸、形状或位置整理或者分类对象

Blob_参数

主要用于检测和分析图像中的斑点特征:

SegmentationParams.Mode：设置图像分割模式，包括固定阈值（HardFixedThreshold）、动态阈值（HardDynamicThreshold）、相对阈值（HardRelativeThreshold）等。
SegmentationParam.Polarity：设置斑点的极性，包括白底黑点（DarkBlobs）和黑底白点（LightBlobs）
ConnectivityCleanup：设置连通性清理模式、包括修剪（Prune）、填充（Fill）等
ConnectivityMinPixels：设置最小面积，用于过滤过小的斑点
ConnectivityMode：设置连通性，包括已标记（Labeled）、灰度（GreyScale）等
Region：设置检测区域的形状、包括圆形（CogCircle）、椭圆（CogEllipse）、多边形（CogPolygon）等
RunTimeMeasures：设置测试属性，包括面积（Area）、质心坐标（CenterMassX、CenterMassY）等

阈值模式：选择合适的阈值模式（固定阈值、动态阈值、相对阈值）来分割图像中的斑点和背景
极性设置：根据斑点的灰度特征，选择白底黑点或黑底白点的极性
连通性处理：通过设置连通性模式和清理模式，处理斑点的连通性问题
区域设置：指定检测区域、以限制斑点检测的范围
面积过滤：通过设置最小面积和最大面积，过滤不符合要求的斑点
形状筛选：通过设置形状参数，如非环形值、筛选出特定形状的斑点

骰子案例：

工具使用（CogBlobTool）

脚本

声明label集合

private CogGraphicCollection dt = new CogGraphicCollection(); dt.Clear();

封装label

private CogGraphicLabel createlabel(string text, float size, double x, double y, CogColorConstants color) { CogGraphicLabel label = new CogGraphicLabel(); label.Font = new Font("Arial", size, FontStyle.Bold, GraphicsUnit.Pixel); label.Color = color; label.Alignment = CogGraphicLabelAlignmentConstants.TopLeft; label.BackgroundColor = CogColorConstants.White; label.SetXYText(x, y, text); return label; }

实例化转黑白图像

CogImageConvertTool imageconvert = new CogImageConvertTool(); imageconvert.InputImage = null; imageconvert.InputImage = mToolBlock.Inputs["InputImage"].Value as ICogImage; imageconvert.RunParams.RunMode = CogImageConvertRunModeConstants.Intensity; imageconvert.Run();

声明工具，清空变量

CogBlobTool blob = mToolBlock.Tools["CogBlobTool1"]as CogBlobTool; mToolBlock.Outputs["ResultContent"].Value = ""; mToolBlock.Outputs["Count"].Value = "";

赋值

if(imageconvert.RunStatus.Result == CogToolResultConstants.Accept) { blob.InputImage = imageconvert.OutputImage; blob.Run(); foreach(ICogTool tool in mToolBlock.Tools) if(tool.RunStatus.Result == CogToolResultConstants.Accept) { mToolBlock.RunTool(tool, ref message, ref result); mToolBlock.Outputs["Count"].Value = blob.Results.GetBlobs().Count; mToolBlock.Outputs["ResultContent"].Value ="骰子的点数是:"+mToolBlock.Outputs["Count"].Value; string text = mToolBlock.Outputs["ResultContent"].Value as string; dt.Add(createlabel(text, 25, 0, 0, CogColorConstants.Blue)); dt.Add(createlabel(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), 25, 0, 120, CogColorConstants.Green)); } }

All脚本

#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.Dimensioning; using Cognex.VisionPro.ImageProcessing; using Cognex.VisionPro.Blob; #endregion public class CogToolBlockAdvancedScript : CogToolBlockAdvancedScriptBase { #region Private Member Variables private Cognex.VisionPro.ToolBlock.CogToolBlock mToolBlock; #endregion private CogGraphicCollection dt = new CogGraphicCollection(); /// <summary> /// Called when the parent tool is run. /// Add code here to customize or replace the normal run behavior. /// </summary> /// <param name="message">Sets the Message in the tool's RunStatus.</param> /// <param name="result">Sets the Result in the tool's RunStatus</param> /// <returns>True if the tool should run normally, /// False if GroupRun customizes run behavior</returns> 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 dt.Clear(); CogImageConvertTool imageconvert = new CogImageConvertTool(); imageconvert.InputImage = null; imageconvert.InputImage = mToolBlock.Inputs["InputImage"].Value as ICogImage; imageconvert.RunParams.RunMode = CogImageConvertRunModeConstants.Intensity; imageconvert.Run(); CogBlobTool blob = mToolBlock.Tools["CogBlobTool1"]as CogBlobTool; mToolBlock.Outputs["ResultContent"].Value = ""; mToolBlock.Outputs["Count"].Value = ""; // Run each tool using the RunTool function if(imageconvert.RunStatus.Result == CogToolResultConstants.Accept) { blob.InputImage = imageconvert.OutputImage; blob.Run(); foreach(ICogTool tool in mToolBlock.Tools) if(tool.RunStatus.Result == CogToolResultConstants.Accept) { mToolBlock.RunTool(tool, ref message, ref result); mToolBlock.Outputs["Count"].Value = blob.Results.GetBlobs().Count; mToolBlock.Outputs["ResultContent"].Value ="骰子的点数是:"+mToolBlock.Outputs["Count"].Value; string text = mToolBlock.Outputs["ResultContent"].Value as string; dt.Add(createlabel(text, 25, 0, 0, CogColorConstants.Blue)); dt.Add(createlabel(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), 25, 0, 120, CogColorConstants.Green)); } } return false; } private CogGraphicLabel createlabel(string text, float size, double x, double y, CogColorConstants color) { CogGraphicLabel label = new CogGraphicLabel(); label.Font = new Font("Arial", size, FontStyle.Bold, GraphicsUnit.Pixel); label.Color = color; label.Alignment = CogGraphicLabelAlignmentConstants.TopLeft; label.BackgroundColor = CogColorConstants.White; label.SetXYText(x, y, text); return label; } #region When the Current Run Record is Created /// <summary> /// Called when the current record may have changed and is being reconstructed /// </summary> /// <param name="currentRecord"> /// The new currentRecord is available to be initialized or customized.</param> public override void ModifyCurrentRunRecord(Cognex.VisionPro.ICogRecord currentRecord) { } #endregion #region When the Last Run Record is Created /// <summary> /// Called when the last run record may have changed and is being reconstructed /// </summary> /// <param name="lastRecord"> /// The new last run record is available to be initialized or customized.</param> public override void ModifyLastRunRecord(Cognex.VisionPro.ICogRecord lastRecord) { foreach(ICogGraphic s in dt) { mToolBlock.AddGraphicToRunRecord(s, lastRecord, "CogBlobTool1.InputImage", "script"); } } #endregion #region When the Script is Initialized /// <summary> /// Perform any initialization required by your script here /// </summary> /// <param name="host">The host tool</param> public override void Initialize(Cognex.VisionPro.ToolGroup.CogToolGroup host) { // DO NOT REMOVE - Call the base class implementation first - DO NOT REMOVE base.Initialize(host); // Store a local copy of the script host this.mToolBlock = ((Cognex.VisionPro.ToolBlock.CogToolBlock)(host)); } #endregion }

载具判断案例

工具

Blob

脚本

声明工具· 并添加集合

private CogGraphicCollection dt = new CogGraphicCollection(); dt.Clear(); mToolBlock.Outputs["Count"].Value = ""; mToolBlock.Outputs["Result"].Value = ""; CogPMAlignTool pma = mToolBlock.Tools["CogPMAlignTool1"]as CogPMAlignTool; CogToolBlock tb = mToolBlock.Tools["CogTranform"]as CogToolBlock; CogBlobTool small = mToolBlock.Tools["small"]as CogBlobTool; CogBlobTool big = mToolBlock.Tools["big"]as CogBlobTool; CogHistogramTool histogram = mToolBlock.Tools["CogHistogramTool1"]as CogHistogramTool; pma.Run(); int count = 0; bool state = true; double x = (double)tb.Outputs["X"].Value; double y = (double)tb.Outputs["Y"].Value;

判断值并圈写框

if(pma.RunStatus.Result == CogToolResultConstants.Accept) { foreach(ICogTool tool in mToolBlock.Tools) mToolBlock.RunTool(tool, ref message, ref result); count = small.Results.GetBlobs().Count + big.Results.GetBlobs().Count; if(histogram.Result.Mean < 110) { state = false; CogTransform2DLinear transform1 = new CogTransform2DLinear(); CogRectangleAffine res = histogram.Region as CogRectangleAffine; transform1.TranslationX = res.CenterX + x; transform1.TranslationY = res.CenterY + y; res.Color = CogColorConstants.Red; CogHistogramTool his = new CogHistogramTool(); his.Name = histogram.Name; his.Region = res; dt.Add(res); dt.Add(createlabel("此处图像NG", 15, transform1.TranslationX, transform1.TranslationY, CogColorConstants.Red)); } }

声明结果在图像

dt.Add(createlabel(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), 25, 0, 0, CogColorConstants.Green)); dt.Add(createlabel("物料状态:" + (state ? "OK" : "NG"), 25, 0, 110, state ? CogColorConstants.Blue : CogColorConstants.Red)); dt.Add(createlabel("产品孔洞:" + count, 25, 0, 200, CogColorConstants.Purple)); mToolBlock.Outputs["Count"].Value = count; mToolBlock.Outputs["Result"].Value = state ? "OK" : "NG";

创建label

private CogGraphicLabel createlabel(string text, float size, double x, double y, CogColorConstants color) { CogGraphicLabel label = new CogGraphicLabel(); label.Color = color; if(!text.Contains("此处图像")) { label.Alignment = CogGraphicLabelAlignmentConstants.TopLeft; } label.BackgroundColor = CogColorConstants.White; label.Font = new Font("Arial", size, FontStyle.Bold, GraphicsUnit.Pixel); label.SetXYText(x, y, text); return label; }

输出集合

foreach(ICogGraphic s in dt) { mToolBlock.AddGraphicToRunRecord(s, lastRecord, "CogPMAlignTool1.InputImage", "lastRecord"); }

All_脚本

#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.PMAlign; using Cognex.VisionPro.CalibFix; using Cognex.VisionPro.Blob; using Cognex.VisionPro.ImageProcessing; #endregion public class CogToolBlockAdvancedScript : CogToolBlockAdvancedScriptBase { #region Private Member Variables private Cognex.VisionPro.ToolBlock.CogToolBlock mToolBlock; #endregion private CogGraphicCollection dt = new CogGraphicCollection(); /// <summary> /// Called when the parent tool is run. /// Add code here to customize or replace the normal run behavior. /// </summary> /// <param name="message">Sets the Message in the tool's RunStatus.</param> /// <param name="result">Sets the Result in the tool's RunStatus</param> /// <returns>True if the tool should run normally, /// False if GroupRun customizes run behavior</returns> 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 dt.Clear(); mToolBlock.Outputs["Count"].Value = ""; mToolBlock.Outputs["Result"].Value = ""; CogPMAlignTool pma = mToolBlock.Tools["CogPMAlignTool1"]as CogPMAlignTool; CogToolBlock tb = mToolBlock.Tools["CogTranform"]as CogToolBlock; CogBlobTool small = mToolBlock.Tools["small"]as CogBlobTool; CogBlobTool big = mToolBlock.Tools["big"]as CogBlobTool; CogHistogramTool histogram = mToolBlock.Tools["CogHistogramTool1"]as CogHistogramTool; // Run each tool using the RunTool function pma.Run(); int count = 0; bool state = true; double x = (double)tb.Outputs["X"].Value; double y = (double)tb.Outputs["Y"].Value; if(pma.RunStatus.Result == CogToolResultConstants.Accept) { foreach(ICogTool tool in mToolBlock.Tools) mToolBlock.RunTool(tool, ref message, ref result); count = small.Results.GetBlobs().Count + big.Results.GetBlobs().Count; if(histogram.Result.Mean < 110) { state = false; CogTransform2DLinear transform1 = new CogTransform2DLinear(); CogRectangleAffine res = histogram.Region as CogRectangleAffine; transform1.TranslationX = res.CenterX + x; transform1.TranslationY = res.CenterY + y; res.Color = CogColorConstants.Red; CogHistogramTool his = new CogHistogramTool(); his.Name = histogram.Name; his.Region = res; dt.Add(res); dt.Add(createlabel("此处图像NG", 15, transform1.TranslationX, transform1.TranslationY, CogColorConstants.Red)); } } dt.Add(createlabel(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), 25, 0, 0, CogColorConstants.Green)); dt.Add(createlabel("物料状态:" + (state ? "OK" : "NG"), 25, 0, 110, state ? CogColorConstants.Blue : CogColorConstants.Red)); dt.Add(createlabel("产品孔洞:" + count, 25, 0, 200, CogColorConstants.Purple)); mToolBlock.Outputs["Count"].Value = count; mToolBlock.Outputs["Result"].Value = state ? "OK" : "NG"; return false; } private CogGraphicLabel createlabel(string text, float size, double x, double y, CogColorConstants color) { CogGraphicLabel label = new CogGraphicLabel(); label.Color = color; if(!text.Contains("此处图像")) { label.Alignment = CogGraphicLabelAlignmentConstants.TopLeft; } label.BackgroundColor = CogColorConstants.White; label.Font = new Font("Arial", size, FontStyle.Bold, GraphicsUnit.Pixel); label.SetXYText(x, y, text); return label; } #region When the Current Run Record is Created /// <summary> /// Called when the current record may have changed and is being reconstructed /// </summary> /// <param name="currentRecord"> /// The new currentRecord is available to be initialized or customized.</param> public override void ModifyCurrentRunRecord(Cognex.VisionPro.ICogRecord currentRecord) { } #endregion #region When the Last Run Record is Created /// <summary> /// Called when the last run record may have changed and is being reconstructed /// </summary> /// <param name="lastRecord"> /// The new last run record is available to be initialized or customized.</param> public override void ModifyLastRunRecord(Cognex.VisionPro.ICogRecord lastRecord) { foreach(ICogGraphic s in dt) { mToolBlock.AddGraphicToRunRecord(s, lastRecord, "CogPMAlignTool1.InputImage", "lastRecord"); } } #endregion #region When the Script is Initialized /// <summary> /// Perform any initialization required by your script here /// </summary> /// <param name="host">The host tool</param> public override void Initialize(Cognex.VisionPro.ToolGroup.CogToolGroup host) { // DO NOT REMOVE - Call the base class implementation first - DO NOT REMOVE base.Initialize(host); // Store a local copy of the script host this.mToolBlock = ((Cognex.VisionPro.ToolBlock.CogToolBlock)(host)); } #endregion }

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