There are several ways to change your view of the canvas, from basic zooming and panning around the image to more advanced image and annotation settings.
Expand the settings panel on the right sidebar to access both image and annotation view settings.
The image settings at the top of the settings panel allow the user to adjust the saturation, brightness, and contrast of the image. There is also a check box that allows users to show or hide the image navigator on the classes panel. All preferences persist from one image to the next.
Annotators can change the opacity of the masks using the annotation settings on the lower half of the settings panel. Object detection tasks give users the option to view class labels within each bounding box, and all non-classification tasks give users the option to make annotations persist from one image to the next.
Zoom & Pan
The Image Navigator
The image navigator is located in the classes panel, and is a centralized way to zoom and pan around an image. Slide the scale below the navigator to zoom in, and drag the purple box on the minimap to pan around the image.
Without using the minimap, users can zoom by scrolling with the cursor held over the image, using the zoom tool to click, Shift + click, or click and drag to view a region, or by using the dropdown or 'zoom extents' () to fill the canvas in the upper right corner of the canvas.
Aside from panning using the image navigator, Annotators can pan by holding the Alt key or clicking the middle mouse button (often a scroll wheel) and dragging the image directly.