Ideas on Video Communications

Ideas on Video Communications


Lens Distortion Correction of Live Video [Webinar Recording]

July 15, 2020

Correct lens distortion in live video in real-time.  Maximize the impact and value of your media assets.
Watch and learn from MC Patel about the top four use cases in which real-time correction of lens distortion can transform live video into a valuable addition to your live production.
Small broadcast-quality HD cameras with wide-angle or fisheye lenses are both a practical and cost-effective solution for live sports and reality TV broadcasts, as well as a host of other applications including medical, forensics/security, concerts and other live events, covert wildlife image capture, electronic newsgathering, and more. Due to their compact size and lower cost, such cameras can be deployed with much greater flexibility than larger broadcast cameras to bring viewers new or unusual perspectives. Unfortunately, the wide field-of-view lenses typically used with such “micro-cameras” give rise to lens distortion and curvilinear perspective image artifacts resulting from camera positioning. To incorporate live video from HD micro-cameras into high-quality applications, broadcasters and production companies must be able to correct for these distortions in real-time.
 
 
Highlights:

* Removal of Curvilinear Artifacts
* Adjustment of Rotation
* Virtual Camera Off-set
* Optimization of Zoom

 

Geometry plays a big role in the world in which we live. Straight lines and the shapes they create are included in much of what we see before us. Geometric optical lens distortion changes the way lines appear on the screen. This is a problem facing many modern videographers as the use of fisheye and wide-angle live HD cameras become more fluent in the mainstream recording.
While wide-angle cameras provide an added level of depth which standard lenses don’t capture, it does pose some problems in terms of rectilinear projection. The lines which were once straight beginning to curve and distort around the edges of the shot. This optical aberration makes it difficult for viewers to determine what they’re looking at in the moment.
For videographers with the time to correct these issues during the editing process, it’s not a problem. However, live broadcasters recording sports games, local news, research for the medical industry, or even corporate AV, are unable to rectify the distortion before the image reaches viewers. This is where VidOvation’s AlphaEye becomes an asset.
Transcript:
 
Jim Jachetta (00:00):
Good morning everyone. I’m Jim Jachetta, CTO and co founder of VidOvation. Today we have a very special guest, my good friend MC Patel. He is the CEO of Alpha Image, and today he’s going to talk about a very innovative product he has called the Alpha Eye. Now all of us people in the television industry and the video industry, we’ve all seen distortion or artifacts in video with fisheye lens, wide angle lenses.
Jim Jachetta (00:49):
So I’ll give you an example. It’s not uncommon to have a wide angle shot above a basketball basket on...