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Improving temporal consistency in video sharpness enhancement

A clarity and consistency technology, applied in the direction of digital video signal modification, TV, color TV, etc., can solve the problem that the value function can only use one algorithm, etc.

Inactive Publication Date: 2005-04-20
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with the combination of value function and enhancement function is that the value function can only use one algorithm

Method used

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  • Improving temporal consistency in video sharpness enhancement
  • Improving temporal consistency in video sharpness enhancement
  • Improving temporal consistency in video sharpness enhancement

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Embodiment Construction

[0024] Reference will now be made in detail to the preferred embodiments of the invention, an example of which is illustrated in the accompanying drawings. The method and corresponding steps of the present invention will be described in conjunction with the detailed description of the system.

[0025] The attached Figures 1 to 3The various embodiments and examples used to describe the principles of the systems and methods of the invention are by way of illustration only and should not be construed in any way to limit the scope of the invention. The system and method of the present invention will be described as a system and method for improving the picture quality of an encoded digital video signal in a digital television. It is important to realize that the systems and methods of the present invention are not limited to digital televisions. Those of ordinary skill in the art will readily appreciate that the principles of the present invention can be successfully used in an...

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Abstract

A method and system are provided for improving the temporal consistency of an enhanced signal (210) representing at least one frame by enhancing gain using a sharpness enhancement algorithm. The method comprises the steps of: receiving an enhancement signal comprising at least one frame (210); obtaining an enhancement gain for each pixel in the frame; obtaining an enhancement gain value for each pixel in the reference frame from a gain memory using a motion vector, determining Whether the frame is an I, P or B frame type and update enhancement gain is determined for the I frame type by computing the gain map used in the sharpness enhancement algorithm (235). The updated enhancement gain for each pixel is equal to the previously determined enhancement gain used in the sharpness enhancement algorithm. Additionally, the method includes storing an updated enhancement gain in a gain memory; and applying the updated enhancement gain to said sharpness enhancement algorithm to improve temporal consistency of said enhanced signal (210).

Description

technical field [0001] The present invention relates to a system and method for improving the quality of digital video signals. Specifically, the systems and methods of the present invention improve temporal consistency in the sharpness enhancement algorithm. Background technique [0002] High-quality multimedia devices (such as set-top boxes, high-end TVs, digital TVs, personal TVs, storage products, PDAs, wireless network equipment, etc.) are developing in the direction of multiple architectures and new functional components for these devices development in a more open direction. Moreover, the development of these new products and their ability to display video data in arbitrary formats has led to new demands and opportunities for video processing and video enhancement algorithms. [0003] MPEG (Moving Picture Experts Group) video compression is being used in many current and emerging products. MPEG is the core of digital TV set-top box, DSS, HDTV decoder, DVD player, v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/208H04N19/117H04N19/134H04N19/137H04N19/139H04N19/159H04N19/172H04N19/182H04N19/186H04N19/196H04N19/44H04N19/50H04N19/503H04N19/577H04N19/80H04N19/85H04N19/86
CPCH04N19/527H04N19/85H04N19/86H04N1/409
Inventor Y·杨L·博罗茨基J·G·W·M·扬森
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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