Bounding Box and Cuboid
Create Box Annotation
# Get item from the platform
item = dataset.items.get(filepath='/your-image-file-path.jpg')
# Create a builder instance
builder = item.annotations.builder()
# Create box annotation with label
builder.add(annotation_definition=dl.Box(top=10,
left=10,
bottom=100,
right=100,
label='my-label'))
# Upload box to the item
item.annotations.upload(builder)Create a Rotated Bounding Box Annotation
A rotated box is created by setting its top-left and bottom-right coordinates, and providing its rotation angle.
# Get item from the platform
item = dataset.items.get(filepath='/your-image-file-path.jpg')
# Create a builder instance
builder = item.annotations.builder()
# Create box annotation with label
builder.add(annotation_definition=dl.Box(top=10,
left=10,
bottom=100,
right=100,
angle=80,
label='my-label'))
# Upload box to the item
item.annotations.upload(builder)Convert Semantic Segmentation to Bounding Box
Convert all semantic segmentation annotations in an item into box annotation
annotations = item.annotations.list()
builder = item.annotations.builder()
# run over all annotation in item
for annotation in annotations:
if annotation.type == dl.AnnotationType.SEGMENTATION:
print("Found binary annotation - id:", annotation.id)
builder.add(annotation_definition=annotation.annotation_definition.to_box())
item.annotations.upload(annotations=builder)Create Cuboid (3D Box) Annotation
Create cuboid annotation in one of two ways :
# A.Bring front and back rectangles and the angel of the cuboid
builder.add(annotation_definition=dl.Cube.from_boxes_and_angle(label="label",
front_top=100,
front_left=100,
front_right=300,
front_bottom=300,
back_top=200,
back_left=200,
back_right=400,
back_bottom=400,
angle=0
))
# B.Bring all 8 points of the Cuboid
builder.add(annotation_definition=dl.Cube(label="label",
# front top left point coordinates
front_tl=[200, 200],
# front top right point coordinates
front_tr=[500, 250],
# front bottom right point coordinates
front_br=[500, 550],
# front bottom left point coordinates
front_bl=[200, 500],
# back top left point coordinates
back_tl=[300, 300],
# back top right point coordinates
back_tr=[600, 350],
# back bottom right point coordinates
back_br=[600, 650],
# back bottom left point coordinates
back_bl=[300, 600]
))
item.annotations.upload(builder)