How to Correct Fisheye/Barrel Lens Distortion from GoPro/Drone Video
VideoProc is a piece of ease-to-use yet powerful video processing software capable of removing fisheye/barrel/pincushion distortion from videos easily. It accepts any video source, incl. 4K UHD video, time-lapse video and slow-mo video, straightens the fisheye video, and therefore removes the distinctive ultra-wide-angle look from video footage without degrading quality. Most importantly, slow video rendering is never the case with VideoProc. By taking advantages of Full GPU acceleration, it make better use of GPU to process 4K and other large-sized videos pretty fast, without any freezing, stuttering or computer overheating.
Almost all types of video lens distortion are correctable. After downloading and installing VideoProc on your PC or Mac, you can follow step-by-step guides below.
Step 1: Add Source Video to the Fisheye Lens Distortion Correction Software
Launch VideoProc, the video editing software is capable of correcting fisheye distortion, barrel distortion, and pincushion distortion. Click Video icon on the main interface to fire off the video editing and converting feature. Tap +Video button to add the distorted video.
Step 2: Enable the Fisheye Feature
Click the Toolbox at the bottom of the interface > Find Fisheye and double click on it to enable the fisheye Lens Correction feature.
Step 3: Tweak Settings for the Best Possible Result
On the main interface of the Lens Correction, 4 parameter settings are available for you to tweak so that you can have the fisheye/barrel distortion minimized or even removed from your abnormal video.
Here are some suggestions:
How to Correct Lens Distortion
Relative x-coordinate of the focal point of the image, and thereby the center of the distortion, with a value ranging from 0 to 1.
Focal point will changed horizontally, from right to left typically, when you move the slide bar from 0 to 1.
Relative y-coordinate of the focal point of the image, and thereby the center of the distortion, with a value ranging from 0 to 1.
Focal point will changed vertically, from bottom to top typically, when you move the slide bar from 0 to 1.
Coefficient of the quadratic correction term, with a value ranging from -1 to 1.
The higher the value is, the more barrel distortion it will be. While the lower the value is, the more pincushion distortion it will be. You can get different amount of distortion in your source video, which will affect your post-production. So move the slider bars to do the parameter adjustment and get your best possible result by yourself, based on the preview window on the left side.
1. Technically, CX and CY actually refers to correct perspective distortion, which isn't a true distortion but a natural characteristic of 3D vision. While K1 and K2 usually involves in correcting barrel/pincushion distortion.
2. The process of correction involves in redistribution of the video resolution. With the correction of barrel distortion, the center will be slightly sharper at the expense of the edge, but with the removal of pincushion distortion, the edges will be slightly sharper at the expense of the center.
3. Video cropping during the lens distortion correction is inevitable as a mean to crop out curved edges of the corrected frame, even when you try other professional video editing software. By far, there is no other solution to overcome this problem. But VideoProc minimizes the auto cropping problem with its unique algorithm and strongly recommends to do the lens distortion removal before you cropping your video.
Step 4: Set the Output Folder
Click Browse button to save the destination for your normal video .
Step 5: Start Fisheye or Barrel Lens Distortion Removal Process
Click RUN button at the bottom of the interface to eliminate the fisheye effect and barrel distortion caused by GoPro or other wide angle camera lens.
Note: Full GPU acceleration is enabled to guarantee the fastest possible processing speed if your computer is equipped with 2012 GeForce GT 630, 2011 Sandy Bridge Intel CPU or newer.