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Video window detector

A technology for video, video frames, applied in the field of improving the quality of video and graphics, which can solve problems such as inefficient use, reduction of original image size and/or resolution, etc.

Inactive Publication Date: 2008-01-30
GENESIS MICROCHIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the presence of these white spaces not only reduces the size and / or resolution of the original image, but any video enhancement or other processing is effectively rendered useless in the white spaces, resulting in an inefficient use of computer and / or memory resources

Method used

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Embodiment Construction

[0017] Reference will now be made in detail to a specific embodiment of the invention, an example of which is illustrated in the accompanying drawings. While the invention will be described in conjunction with particular embodiments, it will be understood that the invention is not limited to the described embodiments. On the contrary, various alterations, modifications, and equivalents are intended to be included within the spirit and scope of the invention as defined by the appended claims.

[0018] In general, a mostly synthetic image (e.g., a low fidelity index) is likely to be "text" and a mostly "real" image is likely to be video. Therefore, a video window can be identified if a part of the image with a higher realism index is concentrated in a rectangular area. In this case, the resulting data is searched arithmetically for a large window of truth, and if found, a similar operation is performed within a smaller window around each edge of the large rectangle, Zoom in to...

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Abstract

The invention provides for automatically identifying the location of a displayed video window based upon a characterization of selected portions of the image for realness based upon a distribution of luminance values for the selected portions. The image is then searched mathematically for a large rectangle of realness, and if found, a similar operation is performed in a smaller rectangle around each of the edges of the large rectangle, in turn, zooming in to a resolution of one pixel, thus identifying the position of the edge. This process can be repeated as often as necessary in order to maintain a fix on the edges of the video window.

Description

technical field [0001] The present invention generally relates to improving the quality of video and graphics. Background technique [0002] Televisions, computer monitors, and other display devices come in a variety of display sizes and aspect ratios. For example, a normal TV monitor has a 4:3 (1.33:1) aspect ratio (referred to here as a standard monitor), while a widescreen monitor, such as a theater or HDTV monitor, has a 16:9 (1.78:1) aspect ratio. ) screen aspect ratio. Wider displays also exist, with aspect ratios of 2.39:1 or 2.35:1. Furthermore, a given display unit should be capable of displaying a large number of existing video signal formats. In order for a given display unit to display a format other than its own native format, various techniques are used to shrink or stretch the screen aspect ratio of the non-native format. Many of these techniques involve projecting the non-native image in its native format onto the local display and simply blacking out the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G5/14G09G5/00
Inventor G·尼尔
Owner GENESIS MICROCHIP
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