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De-interlacing device for adaptable angle and its de-interlacing method

A de-interlacing and adaptive technology, applied to color TV parts, TV system parts, TVs, etc., can solve the problems of wrong grayscale value of the target pixel, and the image quality cannot meet the expected requirements, etc.

Inactive Publication Date: 2010-05-12
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, whether the image after interpolation is good or not depends on whether the edge angle is selected correctly. A wrong edge angle will cause the grayscale value of the target pixel to be wrong, so that the image quality after interpolation cannot meet the expected requirements.

Method used

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  • De-interlacing device for adaptable angle and its de-interlacing method
  • De-interlacing device for adaptable angle and its de-interlacing method
  • De-interlacing device for adaptable angle and its de-interlacing method

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no. 1 example

[0042] Please refer to figure 2 , which is a de-interleaving device according to the first embodiment of the present invention. The deinterleaving device 20 (1) comprises a first memory 210, a second memory 220, a complexity detection module 230, a qualifier (Qualifier) ​​240, a comparator (Comparator) 250 and a mixer (Mixer) 260; and the complexity detection module 230 includes a first complexity detector 232 , a second complexity detector 234 and a logic operator 236 . The first memory 210 is used to store the aforementioned first display line L -1 , and the second memory 220 is used to store the aforementioned second display line L +1 (Such as figure 1 shown).

[0043] The first complexity detector 232 is used for detecting the first display line L corresponding to the target pixel within a first range -1 . The pixel data of each pixel in the first range forms a brightness distribution curve along with the pixel position. The first complexity detector 232 according ...

no. 2 example

[0055] Please refer to Figure 4 , shows a deinterleaving apparatus according to a second embodiment of the present invention. In this embodiment, the extremum detection module 270 is used to detect the first display line L within a third range corresponding to the target pixel -1 and the second display line L +1 extreme values, for example, when the first display line L within the third range -1 and the second display line L +1 When the luminance distribution curves of each have an extremum, the prediction signal S6 is output. The prediction signal S6 is used to indicate a predicted angle range of possible edge angles. This enables the de-interlacing device 20(2) to more accurately find the best edge angle within the predicted angle range to interpolate appropriate pixel data.

[0056] The extremum detection module 270 includes a first extremum detector 272 , a second extremum detector 274 and an angle predictor 276 . The first extremum detector 272 is used to detect th...

no. 3 example

[0066] Please refer to Figure 6 , showing the deinterleaving device according to the third embodiment of the present invention, the deinterleaving device 20(3) can respectively detect the first display line L through the complexity detection module 230 and the extremum detection module 270 -1 and the second display line L +1 The extremum and / or complexity of , to accurately find the best edge angle to interpolate appropriate pixel data.

[0067] Please refer to Figure 7 , showing a flowchart of a de-interlacing method according to a preferred embodiment of the present invention, which can be used in the above-mentioned de-interlacing device 20(3). First, as shown in step 710, when the first display line in the third range relative to the target pixel L -1 and the second display line L +1 When each of the luminance distribution curves has an extremum, the extremum detection module 270 outputs a prediction signal S6 to indicate a predicted angle range of possible edge angl...

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Abstract

The adaptive angular disinterlacing device comprises: a complexity detection module to output a control signal for indicating a second range according to the complexity of the target pixel first / second display line light distribution curve in first range, a limiter to receive the control signal and generate the possible edge angular similarity corresponding to the first / second display line pixel in the second range, a comparator to compare the similarity and select the better edge angle, and a mixer to generate target pixel data according to the better angle, wherein it is better that the complexity of the first / second display line is less than the threshold in the second range.

Description

【Technical field】 [0001] The present invention relates to an adaptive angle de-interlacing device and its de-interlacing method, and in particular to an adaptive method for accurately finding a better edge angle by detecting the extremum or complexity near a target pixel. A de-interleaving device and a de-interleaving method thereof from a gender perspective. 【Background technique】 [0002] General videos are shot and played in an interlaced manner. Taking TV as an example, the playback of a frame is completed by first broadcasting the odd field (Odd Field), and then broadcasting the even field (Even Field). The odd field is composed of the odd display lines of the picture; the even field is formed of the even display lines of the picture. [0003] The refresh rate of a general TV is 30Hz, that is, 30 pictures are broadcast within one second. Each picture is divided into odd image field and even image field, so there are 60 image fields in one second. [0004] Due to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/14H04N7/01
Inventor 任立寰
Owner MEDIATEK INC