Method and Device for Processing Pixels Contained in a Video Sequence

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This invention provides a method and device for processing the value of image pixels in a video sequence by constructing individual 'motion trajectories' for each pixel, tracking their potential movement across multiple frames using different motion models. The system evaluates multiple candidate motion-shifted versions of each pixel in every frame, chooses the most appropriate ones according to specific criteria (such as similarity, distance, or value), and combines these to enhance the pixel value. This approach is aimed at improving video quality and data compression during encoding or decoding.

Use CasesContent extracted from patent full text and abstract with AI.

• Video encoding processes for streaming services to deliver higher quality videos at lower bitrates.
• Video decoders in consumer electronics (smart TVs, set-top boxes) to improve playback quality from compressed streams.
• Real-time video communications (video calls, conferencing) to optimize quality in limited bandwidth scenarios.
• Video editing/post-processing software that require noise reduction and artifact removal.
• Security and surveillance systems needing enhanced clarity from recorded video streams.
• Medical imaging and diagnostics where video sequence clarity can be critical.

BenefitsContent extracted from patent full text and abstract with AI.

• Improves both subjective (perceived) and objective (measured) video quality by considering individual pixel motion over time.
• Reduces visual artifacts caused by compression, such as blockiness or blurring.
• Enables more efficient video compression by optimally using motion information, potentially lowering required bitrates.
• Provides adaptability—different motion models and selection criteria can be used for different scenarios, balancing between quality and computational complexity.
• Compatible with both video encoding and decoding, so it enhances quality throughout the production and delivery chain.
• Can be embedded in both software and hardware solutions.

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Inventors & Applicants

Patent Abstract

The present invention inter alia relates to a method for processing the pixel value of at least one image pixel contained in a current frame of a video sequence, said method comprising the steps of constructing an individual motion trajectory comprising motion-shifted versions of the at least one image pixel over a plurality of preceding and/or subsequent frames, and processing the pixel value based on the individual motion trajectory, wherein said step of constructing said individual motion trajectory comprises the steps of: - choosing the at least one image pixel of the current frame as a start pixel of the individual motion trajectory, and adding motion-shifted versions of the at least one image pixel of preceding and/or subsequent frames to the individual motion trajectory; - wherein for each of the plurality of preceding and/or subsequent frames, at least two motion-shifted versions of the at least one image pixel are determined, - wherein, for each of the plurality of preceding and/or subsequent frames, one of said at least two motion-shifted versions of the at least one image pixel is selected and - wherein the selected motion-shifted version is added to the individual motion trajectory.