Temporal resolution enhancement in compressed video sequences

Authors:
Mark A. Robertson;Robert L. Stevenson
Affiliations:
Laboratory for Image and Signal Analysis (LISA), University of Notre Dame, Notre Dame, IN;Laboratory for Image and Signal Analysis (LISA), University of Notre Dame, Notre Dame, IN
Venue:
EURASIP Journal on Applied Signal Processing
Year:
2001

Citing 6
Cited 0

Fundamentals of digital image processing

Fundamentals of digital image processing
Extraction of high-resolution frames from video sequences

IEEE Transactions on Image Processing
Projection-based spatially adaptive reconstruction of block-transform compressed images

IEEE Transactions on Image Processing
Improved image decompression for reduced transform coding artifacts

IEEE Transactions on Circuits and Systems for Video Technology
A method for motion adaptive frame rate up-conversion

IEEE Transactions on Circuits and Systems for Video Technology
Reduction of blocking artifacts in image and video coding

IEEE Transactions on Circuits and Systems for Video Technology

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Abstract

Compressed video may possess a number of artifacts, both spatial and temporal. Spatial compression artifacts arise as a result of quantization of the transform-domain coefficients, and are often manifested as blocking and ringing artifacts. Temporal limitations in compressed video occur when the encoder, in an effort to reduce bandwidth, drops frames. Omitting frames decreases the reconstructed frame rate, which can cause motion to appear jerky and uneven. This paper discusses a method to increase the frame rate of video compressed with the DCT by inserting images between received frames of the sequence. The Bayesian formulation of the restoration prevents spatial compression artifacts in the received frames from propagating to the reconstructed frames.