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Image display device and method, image processing apparatus and method

An image display device and an image display technology, which are applied in image data processing, image enhancement, image communication, etc., can solve problems such as inability to reproduce original image information accurately, image quality degradation, etc.

Inactive Publication Date: 2005-05-11
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, there is a problem of image quality degradation in the image processed by extraction and interpolation at the selected position as described above.
That is, in the above example, the white line image in the black image is reproduced by the gray line image in the black image, and the information of the original image cannot be reproduced very accurately.

Method used

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  • Image display device and method, image processing apparatus and method
  • Image display device and method, image processing apparatus and method
  • Image display device and method, image processing apparatus and method

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Embodiment

[0033] A. The overall structure of the device

[0034] Next, embodiments of the present invention will be described based on examples. FIG. 1 is a block diagram showing the overall configuration of an image display device as an embodiment of the present invention. This image display device is a projection type display device that projects and displays an image on a screen SC. The image display device is a computer system having an A-D converter 20 , a video decoder 22 , a frame memory 24 , a video processor 26 , a liquid crystal panel drive circuit 30 , a liquid crystal panel 32 and a remote controller control circuit 34 . The frame memory 24 and the video processor 26 are integrated as one integrated circuit 60 for image processing.

[0035]In addition, the image display device has an illumination device 50 for illuminating the liquid crystal panel 32 and a projection optical system 52 for projecting image light emitted from the liquid crystal panel 32 onto the screen SC. ...

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Abstract

An image display device and method, as well as an image processing device and method, which can reduce the degradation of image quality caused by interpolation processing performed when decimation processing is performed. The image display device includes an image adjustment unit and an image display unit, and the image adjustment unit includes an interpolation processing unit and a filter processing unit that actually performs filtering processing by the spatial low-pass filter and the spatial high-pass filter in this order.

Description

technical field [0001] The present invention relates to techniques of image processing, in particular techniques for adjusting interpolated images. Background technique [0002] In an image display device, image adjustment is often required in order to make an input original image an image suitable for the image display unit. For example, when the resolution of the original image is higher than the resolution that can be displayed by the image display unit, the original image must be reduced. Specifically, when displaying an input SXGA original image on an image display unit capable of displaying an XGA image, the original image must be reduced in size. [0003] When reducing the original image, the original image is usually subjected to extraction processing. In addition, when the value extraction process is performed, the interpolation process is also performed in many cases. As such extraction processing, there is a method of selectively extracting values ​​from groups...

Claims

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Application Information

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IPC IPC(8): H04N1/387G06T3/40G06T5/20G09G3/36G09G5/36G09G5/395H04N1/409H04N5/14H04N5/57H04N5/74H04N9/31
CPCG06T3/4023G09G3/3611G09G5/395G09G2340/0414G09G2340/0421H04N5/14H04N5/57H04N5/7416H04N9/3185H04N2005/745H04N2005/7466
Inventor 竹内启佐敏
Owner SEIKO EPSON CORP