Image Menu
Anonymization Marquee
- Previews an interactive selection marquee that outlines a rectangular region that can be used to anonymize images. Drag and size the marquee to overlay private portions of an image.
Anonymize
- Overlays the rectangle marked by the anonymization marquee with black. To fully anonymize a plan, including text fields, use the anonymization preference setting.
Rectangular Marquee
- Show the rectangular cropping marquee.
Elliptical Marquee
- Show the elliptical cropping marquee.
Crop to Marquee
- Crop the image to the rectangular or elliptical marquee. Elliptical cropping is often combined with image size reduction to optimize fundus images to use as 3D textures.
Invert Colors
- Inverts the colors of an image.
Equalize Histogram
- Applies vImage histogram equalization to the currently displayed image.
Stretch Contrast
- Applies vImage contrast stretching to the currently displayed image.
Ends-In Stretch Contrast
- Applies vImage ends-in contrast stretching to the currently displayed image. The default lower and upper ends are 5%.
Weighted Conversion to Grayscale
- RGB color images are converted to 8-bit grayscale using either the averaging formula gray = (red + green + blue) / 3 or the weighted formula gray = 0.299 red + 0.587 green + 0.114 blue if this menu item is enabled (ie checked). This setting also applies to the way in which pixel gray is calculated when Image auto-contrast is enabled.
Lock Montage Center #1 to Pole
- Locks the center of fundus camera montage component #1 to the posterior pole.
Synch MPR Gamma
- When checked, the gamma settings (brightness, contrast, etc...) of the 5 MPR images (axial, equator, sagittal, t-meridian and t-coronal) will all change together. If unchecked, each image can have its own gamma settings.
Snap to Grid
- Rulers snap to horizontal or vertical alignment while dragging if the ruler diameter exceeds 25% of the image size.
Description...
- opens a dialog sheet in which image descriptors and coordinates can be entered.
Show Ruler GWorld...
- Toggles display of the 8-bit monochrome image generated by the ruler auto-calibration functions. Used primarily to test and debug the algorithms that search the image for calibration rulers (e.g. green horizontal and/or vertical lines with tic marks).
Reduce Image Size...
- opens a dialog sheet in which you can reduce the image size.
Anonymization tool marquee
Anonymized image
Image Description
Description...
- opens a modal dialog sheet in which image descriptors and coordinates can be entered for the currently selected image. You can also access the description sheet for a specific image from the contextual menus of each image button.
Image Size
Image Size...
- opens a modal dialog sheet in which image size can be changed.