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Image detection device and method thereof

An image detection device and image detection technology, applied in the field of video processing, can solve problems such as flaws and noise processing

Active Publication Date: 2013-09-04
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, when the multimedia chip performs other image processing that requires feedback (feedback) operations, since the current field / frame must be compared with the previous field / frame, it may cause cross-processing of the image 81 of one field / frame and the image 81 of another field / frame. Edge masking 82, resulting in artifacts such as noise processing

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  • Image detection device and method thereof
  • Image detection device and method thereof

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Embodiment Construction

[0032] Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

[0033] first preferred embodiment

[0034] refer to figure 2 , the image detection device of the present invention is suitable for receiving a video stream comprising a plurality of pictures, the resolution of each picture is M×N, including N columns of data (for example: the 1st column, the 2nd column...the nth column.. .), and each column of data has M pixels (eg: 1st pixel, 2nd pixel...mth pixel...). This preferred embodiment includes a characteristic unit 1 , a searcher 2 and a validator 3 . The searcher 2 includes an upper search unit 21, a lower search unit 22, a left search unit 23 and a right search unit 24, and each search unit 21, 22, 23, 24 includes an image comparator 211, 221, 231, 241, a cover Edge comparators 212 , 222 , 232 , 242 and judgers 213 , 223 , 233 , 243 . The validator 3...

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Abstract

The invention discloses an image detection device, used for receiving a video stream containing at least one picture; wherein each picture comprises a plurality of lines of data, each line of data comprises a plurality of pixels, and each picture shows an image and a shielding side. The image detection device comprises a characteristic unit and a search engine; wherein the characteristic unit receives a plurality of pixels in sequence, so as to determine pixel characteristic value for each pixel; the search engine comprises an image comparator and a shielding side comparator, wherein the image comparator is used for measuring the pixel characteristic value of the current pixel, so as to judge whether the pixel belongs to the image or not, and the shielding side comparator is used for measuring the pixel characteristic value of the current pixel, so as to judge whether the pixel belongs to the shielding side or not; and the search engine is used for speculating the image position based on the judging results of the image comparator and the shielding comparator. The invention also discloses an image detection method.

Description

technical field [0001] The present invention relates to video processing technology, in particular to an image detection device and method for identifying image positions. Background technique [0002] Digital TV provides a wide screen size of 16:9, which can effectively expand the viewing field of view, making viewers feel as if they are in the picture. Since traditional analog TVs mostly produce video images with an aspect ratio of 4:3, they must be processed through appropriate conversion ratios before they can be displayed on wide-screen TVs. Similarly, if you want to watch a high-quality video picture produced in a 16:9 ratio through a traditional analog TV, you also need a corresponding conversion ratio. [0003] refer to figure 1 , the general conversion ratio processing will scale the original picture with the most appropriate ratio7, but usually it cannot completely match the ratio of the format to be produced. At this time, the method of increasing black shading...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/14H04N9/64
Inventor 王基峰林恢弘
Owner REALTEK SEMICON CORP