When stitching together multiple images of a scene to create a panorama, I often find that the edges end up being irregular (especially when shooting without a tripod). In the past, I typically had to either crop the the image (to avoid transparent areas) or take the panorama into Photoshop to use Content-Aware Fill, Liquify, Adaptive Wide Angle, or other techniques to fill in the missing areas. With the new Boundary Warp feature in Adobe Camera Raw and Adobe Lightroom you can adaptively stretch or reshape the edges of a stitched panorama to fill the rectangle boundary.
In this example, the original stitching results in irregular edges.
Using Auto Crop removes the transparent edges, but has to also remove some of the foreground which I would prefer to keep.
Applying the new Boundary Warp feature reshapes the image to fill in the missing areas.
Here are some additional (animated) examples of the effects of setting Boundary Warp’s slider at 0, 25, 50, 75, and 100%.
Boundary Warp may not work well on images with straight lines or architectural features as the process of warping the image to fill the surrounding canvas may bend the lines. In the example below (and in the general case of buildings with possibly many straight lines), it’s not possible to stretch the image to fit the canvas AND preserve the lines at the same time. In other words, something has to give (the windows in the upper right and light on the left look a bit distorted) .
And a video from the famous Dr. Brown!
For more information about new camera and lens profile support, how to install the updates, as well as bug fixes and other changes, please see this post from the Adobe Lightroom Journal.