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Alternation resistance system and method with adaptability edge threshold

An adaptive and threshold technology, applied in the field of anti-interleaving systems, can solve problems such as misjudgment, increased calculation amount, and increased cost

Inactive Publication Date: 2010-05-26
SUNPLUS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the use of a fixed threshold value, it cannot satisfy different sources or different image frames, so there are often misjudgments
[0005] To solve the problem caused by using a fixed threshold value to determine whether a picture is a dynamic picture, US Patent No. US7,027,099 B2 analyzes whether a picture is a dynamic picture in the frequency domain to avoid using a fixed threshold value In case of misjudgment, however, this method needs to convert the picture to the frequency domain (frequency domain), thereby increasing the amount of calculation, which will cause the problem of increased cost
It can be seen that there is still room for improvement in the existing deinterlacing system and method

Method used

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  • Alternation resistance system and method with adaptability edge threshold
  • Alternation resistance system and method with adaptability edge threshold
  • Alternation resistance system and method with adaptability edge threshold

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Embodiment Construction

[0031] figure 2 is a block diagram of the deinterlacing system with adaptive edge threshold of the present invention. The system receives an image data stream composed of a plurality of image fields F, each image field F is composed of a two-dimensional array of pixels 240 and arranged in a plurality of column direction pixels, the system adds a plurality of pixels 240 to To increase the resolution of the field F, each increased pixel 240 is located at a position of the field F. The system includes a motion factor generating device 210 , an adaptive edge threshold generating device 220 and a judging device 230 .

[0032] The movement factor generating device 210 receives a previous field F[N-1] and a next field F[N+1] of a current field F[N] (Current field) to generate a movement factor of the position Mot_fact.

[0033] The adaptive edge threshold generating device 220 receives a current field F[N], a previous field F[N-1] and a next field F[N+1] to generate an adaptive ed...

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Abstract

The invention discloses a deinterleaving system and method comprising adaptive edge threshold value, wherein a moving factor generating device generates moving factor of a position according previousimage field and next image field. An adaptive edge threshold value generating device generates an adaptive edge threshold value according to current image field, previous image field and next image field. A judging device judges pixel to be interpolated in the position according to the moving factor, adaptive edge threshold value. When the moving factor is larger than the adaptive edge threshold value, the interpolation on the pixel to be interpolated on the position is carried out by using pixel of current image field; when the moving factor is less than the adaptive edge threshold value, theinterpolation on the pixel to be interpolated on the position is carried out by using the previous image field and the next image field.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an anti-interlacing system and method with adaptive edge threshold. Background technique [0002] Due to the limitation of transmission bandwidth, the current transmission of TV images adopts the method of interactive transmission of odd image field / even image field. Such as figure 1 As shown, odd fields 10 and 12 only have image data of odd lines, and even fields 11 and 13 only have image data of even lines. Due to the improvement of the resolution in the vertical direction of the new-generation TV, a line doubler (line doubler) is needed inside the TV to perform frequency doubling processing, so as to improve the resolution in the vertical direction. Among them, the simplest frequency doubling process directly combines adjacent odd and even fields to form a progressive scan frame. However, due to the time difference between the adjacent odd and even fields, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/44H04N7/01G06T5/00G06T3/40
Inventor 苏德松陈衍霖
Owner SUNPLUS TECH CO LTD
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