VDIS (Video Digital Image Stabilization)

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Contents

1. Introducing VDIS technology
   2. VDIS in Galaxy camera
   3. Notes

Introducing VDIS technology

What is VDIS?

VDIS technology minimizes and corrects the unsteadiness of a video by utilizing motion sensor data and video analysis. The below images are a testimony to how the VDIS solution can help record a video with relative steadiness.

VDIS default action

VDIS corrects the instability of the camera at parts with unruly movements. It narrows down the angle of view recorded. If you look at the pictures below, VDIS takes a shaky input frame and extracts a particular area as the output frame to reduce any shakiness.

Difference in VDIS performance based on corrective margin

Corrective margin refers to the degree of unsteadiness VDIS technology can correct. A 50% of margin means that 50% is taken off both the vertical and horizontal orientation and this can correct the unsteadiness by 50%. As evident from the images below, a 50% corrective margin compared to a 25% corrective margin can revise movements of a larger degree, but as a consequence the viewing angle is cut down considerably more than a 25% corrective margin.

VDIS in Galaxy camera

VDIS corrects unsteadiness by analysing data from the gyro sensor that detects camera motion, the OIS (Optical Image Stabilization) sensor, and the video recorded. Any unsteadiness is corrected to ensure smooth transition between frames by taking all the data of a particular interval in account.

 Motion Estimation

Motion in directions x, y, z is analysed per frame using the gyro sensor and video analysis.

 Camera Path Planning

Corrective path for directions x, y, z is calculated to ensure smooth movement.

 Correction using Image Warping ^[1] 

Every frame is corrected keeping the calculated corrective path, rolling shutter distortion ^[2], lens distortion ^[3], etc. in mind using the camera path planning

VDIS technology applied scenario ^[4]

• Video, Pro Video, Portrait Video, Director’s view: VDIS feature is applied to different video recording scenarios, and can be turned on/off from 'Camera Settings – Video stabilisation’.
• Zoom Lock (Photo mode): It can help stabilise a subject prone to unsteadiness in high zoom.
• Super Steady (Video mode): Gives usability to maximise stabilisation performance using a huge correction margin.
• Hyperlapse: VDIS is also applied to hyper lapse mode where you can dynamically experience the flow of time in tandem with a change in the sense of space. 

■ Related Content

Adaptive VDIS (Video Digital Image Stabilization) - Samsung Members

CamCyclopedia Index - Samsung Members

You can also access CamCyclopedia anytime by going to Community -> Category (app) -> CamCyclopedia -> “CamCyclopedia Index”.

Reference

[1] Image Warping: https://en.wikipedia.org/wiki/Image_warping

[2] Rolling Shutter Distortion: https://ko.wikipedia.org/wiki/롤링_셔터

[3] Lens Distortion: https://en.wikipedia.org/wiki/Distortion_(optics)

[4] VDIS and VDIS applied scenarios are not supported in some models.