Displaying device, method and programm

A technology of display device and display device, which can be applied to static indicators, cathode ray tube indicators, editing/combining graphics or text, etc., and can solve problems such as image quality deterioration.

Inactive Publication Date: 2004-07-07
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] As mentioned above, display devices that display high-quality images in sub-pixel units have the problem of image quality degradation. When the brightness of sub-pixels is smoothed many times, the image quality degradation will be very prominent.

Method used

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  • Displaying device, method and programm
  • Displaying device, method and programm
  • Displaying device, method and programm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] summary

[0072] The display device 100 in Embodiment 1 superimposes the foreground image on the background image which has been subjected to filtering processing, the luminance of which has been smoothed to eliminate color shift. The display device 100 subjects a composite image to a filtering process in which only a limited area of ​​the composite image is filtered, thereby preventing overlapping of filtering of background images in the composite image. The display device 100 then displays the composite image in sub-pixel units.

[0073] structure

[0074] figure 1 The structure of the display device 100 in Embodiment 1 of the present invention is illustrated. A display device 100 for displaying high-quality images by displaying images in sub-pixel units includes a display device 1, a frame memory 2, a texture memory 3, a CPU 4 and picture processing unit 5.

[0075] The display device 1 includes a display screen (not shown) and a driver (not shown). The displ...

example

[0201] attached Figure 12 Examples of display images displayed on a conventional display device and on the display device 100 of Embodiment 1 of the present invention are shown. in the attached Figure 12 Among them, 103 denotes a display image displayed on a conventional display device, and 104 denotes a display image displayed on the display device 100 in Embodiment 1. The displayed images 103 and 104 are composite images of the foreground image 101 and the background image 102, and here only the background image 102 has been filtered. The foreground image 101 includes: an opaque circular-like area 101a; and a transparent area 101b. The background image 102 includes: an opaque triangle-like area 102a; and a transparent area 102b. When the foreground image 101 is superimposed on the background image 102 as a composite image 103 to be displayed by a conventional display device, the entire area of ​​the foreground image 101 is subject to filtering. Therefore, the filtering...

Embodiment 2

[0204] summary

[0205] In Embodiment 1, the display device 100 judges the necessity of filtering processing based on the dissimilarity between each sub-pixel in the foreground image and its surrounding sub-pixels, so that the composite image superimposed on the background image and filtered The area is limited to a small area. In Embodiment 2, the display device changes the degree of the smoothing effect provided by the filtering process according to the degree of dissimilarity between each sub-pixel in the foreground image and its surrounding sub-pixels. In order to reduce the accumulation of the smoothing effect, a A high-quality image display with accurate sub-pixels.

[0206] structure

[0207] attached Figure 13 The configuration of the display device 200 used in Embodiment 2 of the present invention is shown. as attached Figure 13 As shown, the configuration of the display device 200 is the same as that of the display device 100 except that the superimposition / su...

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PUM

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Abstract

A display apparatus that displays a composite image of a front image and a back image. The display apparatus includes: a front-image change detecting unit 42 that detects a difference in a visual characteristic between a sub-pixel and the surrounding sub-pixels in a front image; a filtering necessity judging unit 43 that judges for each sub-pixel in the front image whether a sub-pixel should be subject to the filtering process or not, based on the degree of the detected difference; and a filtering unit 45 that performs the filtering process only on sub-pixels in the composite image that correspond to the sub-pixels that have been judged as having to be subject to the filtering process.

Description

technical field [0001] The present invention relates to a technique for displaying high-quality images on a display device comprising a plurality of pixels, wherein each pixel is an arrangement of three light emitting elements of three primary colors. Background technique [0002] Among various types of display devices, some types, such as LCD (Liquid Crystal Display) or PDP (Plasma Display), include a display device having a plurality of pixels, each pixel being the three primary colors R, G and B (red , green and blue) an arrangement of three light-emitting elements in which pixels are arranged in rows, and this light-emitting element is called a sub-pixel. [0003] Typically, images are displayed in pixel units. However, when the image is displayed on the pixel unit of a small-sized, low-resolution screen, for example, on the screen of a mobile phone or a portable computer, diagonal lines of characters, photographs, or complex drawings appear grainy. of. [0004] A tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T11/60G09G3/20G09G3/36G09G5/02G09G5/28G09G5/36G09G5/377
CPCG09G5/02G09G2340/0457G09G2320/103G09G5/28G09G3/2003G09G2340/10G09G3/20
Inventor 田冈宏毅手塚忠则
Owner PANASONIC CORP
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