Onis Viewer - Dicom viewer and PACS

Support

How to manipulate images? (zoom, pan, rotate, flip, reset)

There are several ways to manipulate images: by the right mouse button, by the left one, by clicking on buttons...

Pan, zoom, rotate with the "left mouse button" toolbar

In the "left mouse button" toolbar, you can modify the current function of the mouse by clicking on one of these buttons:

You can manipulate (pan/rotate/zoom) the images of a series with your left mouse button by following these steps:

Choose the function that you want by clicking on one of these buttons: Pan, rotate or zoom.
Put your mouse cursor above an image of a series in a display area and press the left mouse button.
While holding the left mouse button, drag your mouse to manipulate (pan/rotate/zoom) the image.
Release the left mouse button.

By default, all images in the display area will be affected. If you want to pan over one or more images independently, uncheck the "Auto propagate settings to all images" in the "Image" menu of the 2D Viewer window. In this case, only the selected images will be affected.

Pan, with the right mouse button

You can pan over the images of a series with your mouse by following these steps:

Bring your mouse cursor above an image of a series in a display area and press the right mouse button.
While holding the right mouse button, drag your mouse to pan over the image.
Release the right mouse button.

Panning images with the right mouse button is a shortcut by default. To change it, see "How to change the shortcuts?".

Zoom, with the right mouse button

You can zoom in or zoom out an image of a series with your mouse by following these steps:

Put your mouse cursor above an image of a series in a display area and press the right mouse button while holding the 'Alt' key.
While holding the right mouse button, move your mouse upward (away from you) to zoom in the image or downward (toward you) to zoom out the image.
Release the right mouse button.

Note: Zooming images with the right mouse button is a shortcut by default. To change it, see "How to change the shortcuts?".

Rotate and flip with the toolbar of the display area

To rotate or flip some images in a display area, follow these instructions:

Select one view if you have several displayed views in your 2D viewer window.
Click on one of these 4 buttons:

Note:

By default, all images in the display area will be affected by the rotation or flip transformation. If you want to apply these transformation to one or several images independently, uncheck the "Auto propagate settings to all images" in the "Image" menu of the 2D Viewer window. In this case, only the selected images will be affected.
You can do the same operation through the "Image" menu of the 2D Viewer window and from the context menu of the display area. To open the context menu of a display area, put your mouse cursor above one image from it and click on the right mouse button.

Reset an image

You can reset the pan, the rotation, the flip, the zoom (and the Window Level) in every image, by clicking on the below button, in the toolbar of the display area:

By default, all images in the display area will be affected by the rotation, flip or inverse transformation. If you want to apply these transformations to one or several images independently, uncheck the "Auto propagate settings to all images" in the "Image" menu of the 2D Viewer window. In this case, only the selected images will be affected.

Example:

Same functions by the context menu or the top menu

When your mouse cursor is on one image, you can open the context menu by clicking on the right mouse button:

You can also find the same function in the top menu, by going into the "Image" and "Tools" menus.