Image segmentation interface
Add a new object
To add a new object:
Select a drawing tool (see Drawing tools)
Label the object by drawing on the image
Press
Space
to confirm the object once you finished labeling
Select an object
Press
Space
orEscape
or click thebutton in the left toolbar to enter view-and-select mode
Click on a labeled object to select it. You can also select an object by selecting it in the right sidebar
Remove an object
Select an object and press Backspace
to remove it. You can also click the icon in the sidebar to remove an object.
Change the category of an object
Select an object and click on its name in the sidebar to select a different category. You can also use hotkey c
to change the category of the active object.
Drawing tools
Brush
Click the
button in the left toolbar or press
b
to select the brush toolChange the brush size by adjusting the slider in the top left of the screen, or by scrolling your mouse wheel
Click and drag on the image to draw
Polygon
Click the
button in the left toolbar or press
g
to select the polygon toolClick on the image to draw polygon points. You can also click and drag to draw free-form lines
Double click or click the first point of the polygon to finish it. The region within the polygon will now be annotated
Superpixels
Click the
button in the left toolbar or press
s
to select the superpixel toolChange the superpixel granularity by adjusting the slider in the top left of the screen, or by scrolling your mouse wheel
Click on a superpixel to select the corresponding region, or drag across multiple superpixels to select more than one at a time
Click a superpixel again to unselect the region
More info in this blog post.
Autosegment
Click the
button in the left toolbar or press
a
to select the autosegment toolDraw a box around an object in the image through click and drag
The object within the box will be automatically segmented
More info in this blog post.
Hover-and-click
Click the
button in the left toolbar or press
d
to select the hover-and-click toolHover with your mouse over the image to see mask suggestions appear
Click to select a suggested mask
More info in this blog post.
Erase and lock mode
The object within the box will be automatically segmented
Erase mode
When labeling in brush, polygon or autosegment mode, an eraser button will appear in the left toolbar. Click it or hold hotkey
e
to enable the erase mode.
Lock mode
Click thebutton in the left toolbar or press hotkey
r
to toggle the lock mode. When lock mode is enabled, existing objects will not be affected when drawing over them.
Ruler mode
Click the
button in the right toolbar or press hotkey
z
to toggle the ruler modeClick in the interface to set the first point
Move your cursor to another point and it will display the measurement in pixels
Click again to go back to select-and-view mode or press
esc
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