Motion-compensated transform coding of video using adaptive displacement fields

Hao Bi; Pattabiraman Subramanian; Jiandong Shen; Wai-Yip Geoffrey Chan

doi:10.1117/1.482595

1 July 1998 Motion-compensated transform coding of video using adaptive displacement fields

Hao Bi, Pattabiraman Subramanian, Jiandong Shen, Wai-Yip Geoffrey Chan

Journal of Electronic Imaging, Vol. 7, Issue 3, (July 1998). https://doi.org/10.1117/1.482595

To find good trade-offs between the rate-distortion efficiency of motion-compensated, discrete-cosine-transform video coding and its computational complexity, we explore a scheme which uses an adaptive displacement vector field for motion compensation. The sampling density of the field is nonuniform and is adapted to the image scene using a Lagrangian optimization algorithm. The algorithm is formulated to minimize an overall distortion for a given bit rate constraint on the video frame. The algorithm takes into account the contributions to the overall bit rate and distortion due to motion vector and prediction residual coding. Our simulation results demonstrate that, for various common video sequences, the proposed scheme outperforms a popular H.263 test model by about 0.5 dB of peak signal-to-noise ratio. Significant reduction in coding artifacts is observed, and visual quality improvement is highly palpable. The work demonstrates that a suitably crafted rate-distortion optimization scheme can improve performance without exacerbating complexity.

Citation Download Citation

Hao Bi, Pattabiraman Subramanian, Jiandong Shen, and Wai-Yip Geoffrey Chan "Motion-compensated transform coding of video using adaptive displacement fields," Journal of Electronic Imaging 7(3), (1 July 1998). https://doi.org/10.1117/1.482595

Published: 1 July 1998

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available