Overview: Painting foreground and background allows you to segment an object occluded in the background
Steps to segment foreground or background:
Knowing how to use the foreground and background are very useful in data labeling.
Start labeling by using left-click.
When we label the 1st object which was occluded by another 2nd object. It should be labeled with an extra region of the object.
By using the foreground option for the 2nd object which was in front of the 1st object. It will cut the 1st object polygon accurately.
By using the background option we can label an occluded object without affecting the polygon in front of the occluded objects
Click “control + shift” to draw a Polygon within a polygon.
Overview: Semantic segmentation is the task of classifying each and every pixel in an image into a class or category. 1. Select an instance or semantic segmentation by clicking “Label” at the top panel
2. Draw an object with a polygon using the left mouse click. 3. When you are labeling objects in the semantic if the objects are touching each other than their drawn polygons are merged with each other with a single id. 4. In the below image, you can see the merged polygons with a single id
Overview: Identify each object instance of each pixel for every known object within an image.
Select an instance or semantic segmentation by clicking “Label” at the top panel.
2. Draw an object with a polygon using the left mouse click. 3. When you are labeling objects in the Instance segmentation, each object can be labelled distinctly with a unique ID. 4. In the image below, you can see the object’s polygons with different IDs like Car1, Car2 and Car3.
