Digital video is often acquired from analog sources such as airwaves or cable transmissions. Due to the nature of analog signals and analog signal processing, video is often corrupted by various manifestations of analog noise, such as color spots and ghosts, in addition to high levels of ordinary noise.

We have designed a special denoising algorithm for the purpose of removing analog noise artifacts from video. Our algorithm uses a specially tuned mixture of spatial and temporal filtration that allows for the removal of strong color noise and for the partial removal of ghosts, moire and interlacing artifacts.

Primary Applications

• DVD and HD DVD recorders
• Video CD/DVD/DivX players
• Digital camcorders
• Television equipment
• Stream pre-processing for better quality/compression ratio trade-off after encoding by either lossy or lossless video codecs
• Home video processing

Key Features

• Adjustable speed/quality trade-off
• Fully automatic
• Preserves details
• Tunable for suppression of individual noise types
• Suitable for hardware implementation

Basic Deliverables

• Source code for a reference implementation in C
• C and assembly language source code for an implementation optimized for the PC (if required)
• Algorithm description
• Software description
• Verification instructions