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

Abstract

The present invention provides an image processing device, an image display apparatus, and an image processing method, which can restrain the reduction of the image quality of the displayed image caused by the displacement of the display position of displayed sub-pixel corresponding to sub-pixel forming one pixel. The image processing device adapted to correct a pixel value corresponding to a sub-pixel constituting a pixel includes a displacement amount storage section adapted to store a displacement amount of a display position of a display sub-pixel corresponding to the sub-pixel constituting a display pixel in a reference position in a display image plane, and a pixel value correction section adapted to correct the pixel value of the sub-pixel corresponding to the display sub-pixel at an end of the display image plane in accordance with the displacement amount stored in the displacement amount storage section.

Description

technical field [0001] The present invention relates to an image processing device, an image display device and an image processing method. Background technique [0002] In recent years, high-performance image display devices such as large-screen televisions and projectors have spread widely. In these image display devices, it is important to further improve the quality of displayed images. In particular, for a projector that is valued as an image display device that has a high degree of freedom of installation and can easily adjust the size of a displayed image by a so-called zoom function, it is increasingly required to achieve a further high-quality image by improving the image quality of the content itself. Image quality. [0003] As such a projector, Patent Document 1 discloses a projector using a transmissive matrix liquid crystal display device as a light valve. This projector is equipped with a plurality of dichroic mirrors through which light from a light source i...

AI Technical Summary

Problems solved by technology

[0006] However, due to the chromatic aberration of the optical system of the projector, the adjustment accuracy of the position adjustment parts of the constituent members of the optical system, etc., the display position of the display sub-pixel corresponding to the sub-pixel constituting one pixel is deviated on the screen. shift

Therefore, for example, in the edge portion of the displayed image on the screen, there is a problem that the image quality of the displayed image deteriorates due to the decrease in resolution and the occurrence of false colors.

The deviation of the display position of the display sub-pixel corresponding to such a sub-pixel can be ignored when the number of display pixels is small, but with the increase of the number of display pixels, the deviation of the display position becomes conspicuous, and it is easy to occur due to the error on the screen. Tendency to degrade image quality due to deviation of display position of sub-pixels

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