Remove and Reposition an Object in an Image

Use segmentation to extract an object from an image, remove it with inpainting, and place it at a new location

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Image segmentation can isolate objects within a scene so they can be manipulated independently. In this example, a goose is selected using a bounding box and segmented from the image. The same region is then removed using inpainting, which reconstructs the surrounding background. Finally, the extracted goose is composited back into the image at a new location.

Start with an image:

In[1]:=

img=

;

Identify the bounding boxes that contain the individual geese:

In[2]:=

bbs=ImageBoundingBoxes[img]

Out[2]=



bird

{Rectangle[{38,172},{126,236}],Rectangle[{135,113},{208,163}],Rectangle[{228,47},{313,109}],Rectangle[{322,74},{396,116}]}

Visualize the selected regions:

In[3]:=

HighlightImage[img,bbs]

Out[3]=

Select and highlight the first goose:

In[4]:=

rect=bbs〚1,1〛;HighlightImage[img,rect]

Out[4]=

Extract the object using segmentation:

In[5]:=

goose=RemoveBackground[img,{"Object",rect}]

Out[5]=

Create a mask corresponding to the selected region and use Inpaint to reconstruct the background where the goose was originally located:

In[6]:=

p1=rect〚1〛;p2=rect〚2〛;dims=ImageDimensions[img];box=Rectangle[Min/@Transpose[{p1,p2}],Max/@Transpose[{p1,p2}]];mask=ImageResize[Rasterize[Graphics[{White,box},BackgroundBlack,PlotRange{{0,dims〚1〛},{0,dims〚2〛}},ImageSizedims],"Image"],dims];background=Inpaint[img,mask]

Out[6]=

Use ImageCompose to insert the extracted goose at a new location in the inpainted image:

In[7]:=

newPos={523,200};moved=ImageCompose[background,goose,newPos]

Out[7]=

Related Symbols

RemoveBackground
Inpaint
ImageCompose
HighlightImage
ImageBoundingBoxes
ImageSaliencyFilter

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Contributed by: Wolfram Staff

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Remove and Reposition an Object in an Image

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