Visual upper system design and development (Halcon WinForm) -6 Nodes and grids

This article will introduce the design of node operation and multi grid preview .

1. take halcon Some operators of are encapsulated into corresponding tool nodes , for example , Image reading , Color conversion , Template matching creation and so on , Provide input setting parameters , Output the execution result after execution , Generally, the output result of the previous node is part of the input parameters of the next node .

For example, the input parameter of the image source node is the image address , Or camera stream , The output is image and grayscale , And picture size .

The input of the color conversion node is the original image , The output is a multi-channel image .

The input of template matching is template outline and image , The output is the matching number and score of the image .

Define the operation parameters of the node , Input parameters , Output results , In this way, when the nodes in series are processed circularly, the input and output can be defined according to the needs of the nodes .

2. In general visual projects, it is common for multiple cameras to detect different parts of the scene , Therefore, in the process of debugging and running, you will need to display images in multiple grids , Choose the grid according to the customized number or the number of cameras . Here we use winform Medium  TableLayoutPanel Perform automatic division and equal division . According to the setting of rows and columns table Row and column addition of , Finally, fill the image control of the node into table in

 private void SetTableCell(int rows,int columns) {
            TablePanel.Controls.Clear();
            TablePanel.RowStyles.Clear();
            TablePanel.ColumnStyles.Clear();
                  TablePanel.RowCount = rows;
            for (int i = 0; i < rows; i++)
            {
                TablePanel.RowStyles.Add(new RowStyle(SizeType.Percent, 100F));
            }

            TablePanel.ColumnCount = columns;
            for (int i = 0; i < columns; i++) {
                TablePanel.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 100F));
            }
          
        }

The renderings are as follows ：