Images
To open an image folder, click File > Open Folder... and select the folder which contains the images you want to annotate. The following image formats are supported:
- JPEG
- PNG
- BMP
Alternatively, you can also just drag and drop a folder into the program to load the contained images.
Note
The program ignores .txt, .json, .data, and .xml files present in the image folder (supporting the case where annotation files are placed alongside image files). For other files that cannot be loaded as images an error report will be shown after file parsing completes.
To navigate the loaded images, you can either use the navigation buttons on the top of the main image panel, use the shortcut keys Ctrl-A (Cmd-A on Mac) (previous image) and Ctrl-D (Cmd-D on Mac) (next image) or you can directly click on images in the Images side-panel.
Navigation buttons
Move your mouse-pointer over the central main image panel, hold Ctrl (Cmd on Mac) and use your mouse-wheel to zoom in and out of the image relative to the mouse-pointer position. To pan the zoomed image, hold Ctrl (Cmd on Mac), then click and drag the image to change the visible portion.
Zooming and panning
To reset an image to its selected default size (see Setting default image size mode) and re-center it in the main image panel, click on the corresponding Reset Image Size and Center icon in the top panel of the main image panel.
By toggling the View > Maximize Images menu-item, you can choose between two different modes for the default size of loaded images in the main image panel. If Maximize Images is ticked, images will by default be displayed as large as the window size allows while still showing the whole image. If set to off, images will be displayed in a size that is as close as possible to the size it had when it was originally loaded.
You can search and select image files in the Search filename text-field at the top of the right side-panel (Ctrl-Alt-F (Cmd-Option-F on Mac) to focus the file search-field).
Filenames are searched as you type and the first file whose filename starts with the typed string will be selected automatically.
Searching image files