• Press Snapshot to capture an image 
• Activate Service.Toolbox - Double click on the FindObject tool and select the Setup panel.
• A blob tool must be configured to search in a specific area on the image called Region of Interest - ROI.
• Move the mouse to the centre of the object / area of interest and read the X and Y coordinates.
• Enter the search area coordinates and specify the delta X and delta Y values.
  • dX and dY are the width and height of the ROI - the dimensions of the ROI are given by the reference system
• Press Apply and the ROI visualisation is shown in the image.
  • If nothings appear the ROI may be set outside the image
• Setting threshold
  • Place the mouse on the object and read the greyscale (pixel) value. 
  • If the maximum Threshold is set to a higher value and the minimum to a lower, the Blob tool will find the object. 
  • You can also set minimum and maximum requirements for the blob area to be located an accepted area. This is normally used to filter out small areas which is not the object of any interest

Hint : To make the threshold robust against intensity variations the results from an Intensity may be used as a dynamic threshold