Overview

The Overlays Widget allows you to control data layers and other aspects of what’s visible on the screen.

The Overlays Widget is found in the lower left corner of the Viewer. Clicking on the Widget will expand the window.

Imagery/Basemap

The Imagery/Basemap buttons allow you to select what kind of content you’re seeing on the screen.

When Imagery is selected, all imagery will be visible and accessible via the timeline.

When Basemap is selected, all imagery and the timeline will be hidden, and only the basemap will be visible.

Gray Sky Contrast

Gray sky imagery is collected under a variety of conditions, and sometimes smoke and clouds in the area can make features in the imagery harder to see. The Gray Sky Contrast feature allows you to dynamically increase the contrast on this kind of imagery so details can be seen easier.

To use the Gray Sky Contrast toggle, ensure you have a Gray Sky collection selected on the timeline, then Switch the Gray Sky Contrast toggle on. The imagery will update with increased contrast.

Once Gray Sky Contrast is switched on, it is automatically adjusted dynamically each time you pan or zoom the screen. This ensures that the contrast boost is appropriate for the range of pixel values (colors) currently on the screen and ensures you always get useful results.

Why doesn’t Vexcel apply the filter to the imagery before it’s made available in the Viewer? A one-size-fits-all application would not be effective, since conditions like smoke density and cloud cover vary widely across a single gray sky imagery collection, and conditions often change during image acquisition. The Gray Sky Contrast filter updates dynamically with your view, meaning it has the power to adapt itself perfectly for whatever you have on the screen at the time. This would not be possible with a static, pre-applied and pre-set filter.

Layers

Below the Gray Sky Contrast tool are layers that are available for your instance. They can be toggled on or off by checking or unchecking the checkbox associated with each layer.