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Deinterlacing Method and Device

Listed on
2026-10-28
High-Speed Deinterlacing Using Fuzzy Metric Weighting for Wiener Filter Interpolation

This technology is a deinterlacing device and method that performs initial interpolation of missing pixels using a Wiener filter with six vertical pixels, evaluates the difference between the interpolated value and surrounding pixel values using a fuzzy metric to determine pixel-specific weights, and updates the interpolated values using these weights.

In environments ranging from mobile devices to large displays that require different scan formats, displaying interlaced video directly often results in visual artifacts such as line crawling, field aliasing, and inter-line flicker. High-performance deinterlacing techniques designed to reduce these issues have historically been computationally intensive, making it difficult to achieve both high processing speeds and high image quality.

This technology utilizes a two-stage structure that refines simple linear filter results once using a fuzzy metric-based weighted average, allowing for improved image quality and faster deinterlacing results with minimal computational resources. It can be applied to real-time streaming services and mobile video playback devices, providing seamless progressive scan video even on devices with limited power and processing performance.

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Key Features:
  • A deinterlacing device comprising an image input unit that receives interlaced video and an output unit that outputs deinterlaced video
  • A filter that interpolates missing pixels by filtering the vertical surrounding pixel values of the target pixel using a Wiener filter
  • A weight calculation unit that calculates the weight of the target pixel by applying fuzzy metric coefficients to the interpolated value from the filter and the values of surrounding pixels
  • An update unit that deinterlaces the video by updating the interpolated value of the target pixel calculated by the filter based on the calculated weight

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Incheon National University
Jeon Gwang-gil
Document
Date of application:
2014-12-31
|
Patent registration number:
10-1661716
Industry
TV•home appliance
display
Technology
Image processing
Country
Korea
Family Patent

N/A

Price
4000000
Fixed price
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