Convert an image to black and white

Use the Image Thresholding block to convert colored or grey-scale images to black and white images based on the intensity.

To convert an image to black and white

1. On the Block Definitions toolbar, select Pre-Processing.

   The Pre-Processing list expands.

2. Drag an Image Thresholding block onto the Canvas.

   

3. Connect the block to other blocks on the Canvas as needed.

4. Select the Image Thresholding block on the Canvas.

5. Right-click the block, and then select Properties.

   

   The Properties side sheet appears on the right side of the screen.

   

6. In the Threshold value box, enter the threshold that you want to use for the black and white conversion.

   You can set this value from 0 to 255. You can also use the slider or the increase button () and decrease button () on the same row to change the Threshold value.

7. Select Apply Changes.

   The preview image for the block updates on both the Properties side sheet and the Canvas.