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41 lines
1.8 KiB
Plaintext
41 lines
1.8 KiB
Plaintext
imglab is a simple graphical tool for annotating images with object bounding
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boxes and optionally their part locations. Generally, you use it when you want
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to train an object detector (e.g. a face detector) since it allows you to
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easily create the needed training dataset.
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You can compile imglab with the following commands:
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cd dlib/tools/imglab
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mkdir build
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cd build
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cmake ..
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cmake --build . --config Release
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Note that you may need to install CMake (www.cmake.org) for this to work. On a
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unix system you can also install imglab into /usr/local/bin by running
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sudo make install
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This will make running it more convenient.
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Next, to use it, lets assume you have a folder of images called /tmp/images.
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These images should contain examples of the objects you want to learn to
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detect. You will use the imglab tool to label these objects. Do this by
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typing the following command:
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./imglab -c mydataset.xml /tmp/images
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This will create a file called mydataset.xml which simply lists the images in
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/tmp/images. To add bounding boxes to the objects you run:
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./imglab mydataset.xml
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and a window will appear showing all the images. You can use the up and down
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arrow keys to cycle though the images and the mouse to label objects. In
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particular, holding the shift key, left clicking, and dragging the mouse will
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allow you to draw boxes around the objects you wish to detect.
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Once you finish labeling objects go to the file menu, click save, and then
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close the program. This will save the object boxes back to mydataset.xml. You
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can verify this by opening the tool again with:
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./imglab mydataset.xml
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and observing that the boxes are present.
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imglab can do a few additional things. To see these run:
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imglab -h
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and also read the instructions in the About->Help menu.
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