Image Processor and Image Processing Method

Inactive Publication Date: 2010-02-04
KK TOSHIBA
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

With such technologies, however, a sharp image cannot be obtained.
Therefore, when the super-resolution processing is equivalently performed on various videos, noise contained in, for example, the video provided via CS broadcasting having less information amount with respect to others becomes noticeable, thereby degrading the enhanced sharpness of video.
However, such

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  • Image Processor and Image Processing Method
  • Image Processor and Image Processing Method

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Example

[0074]In the aforementioned first embodiment, the type of broadcasting is explained as an example of the information amount of the externally received video signal. However, a noise amount contained in the broadcasting changes based on the type of the received broadcasting. Hence, if strong super-resolution conversion is performed on the video signal having a large noise amount, the noise amount might become noticeable. Hence, instead of the information amount such as the type of broadcasting, super-resolution conversion is performed based on the noise amount contained in the video signal.

[0075]FIG. 8 is an exemplary schematic block diagram illustrating a central processor 82 of the image display apparatus (not shown) of a second embodiment. The central processor 82 differs from the central processor 12 of the first embodiment in that the central processor 82 has a noise amount detector 822. In the following, identical symbols are assigned to elements identical to that of the first ...

Example

[0079]Processing performed by the image display apparatus of the second embodiment is explained with reference to FIG. 10. Explanations of the processing similar to that of the first embodiment are omitted.

[0080]The noise amount detector 822 detects the noise amount of the received image signal (S1001), and outputs the received image signal and the noise amount to the resolution increasing module 13 (S1002). It is already mentioned that the noise amount can be detected after the noise reduction.

[0081]Upon receipt of the image signal from the source code determination module 122, the preprocessor 131 of the resolution increasing module 13 performs an image processing such as the interlace / progressive conversion, and outputs the noise amount received from the central processor 12 and the image signal to the super-resolution converter 132 (S1003).

[0082]Upon receipt of the noise amount and the image signal from the preprocessor 131, the super-resolution converter 132 obtains the super-r...

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Abstract

According to one embodiment, an image processor has a resolution increase module, a detector, and a controller. The resolution increase module is configured to perform super-resolution processing so as to restore a first video signal to a second video signal having a second resolution higher than the first resolution. The detector is configured to detect at least one of an information amount of the first image signal, a noise amount of the first image signal, and a type of a terminal to which the first video signal is input. The controller is configured to change a degree of a super-resolution processing performed by the resolution increase module based on a detection. result of the detector.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2008-201201, filed Aug. 4, 2008, the entire contents of which are incorporated herein by reference.BACKGROUND[0002]1. Field[0003]One embodiment of the invention relates to a technology for increasing resolution of an image, and relates particularly to an image processor and an image processing method for increasing resolution of an image.[0004]2. Description of the Related Art[0005]Recent progress in the integration of a personal computer (PC) and a television provides more opportunities to view various types of videos on a high-resolution display with high definition (HD) exceeding standard definition (SD).[0006]Video broadcast for SD televisions, video recorded on DVD, or the like has low resolution. Therefore, when users view video in HD size (especially, in full HD size, i.e., full HD resolution of 1920×1080 pixels), the resolution o...

Claims

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Application Information

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IPC IPC(8): G06K9/32G06T3/40H04N7/01
CPCG06T3/40
Inventor TERADA, MUNEHIRONAGAI, KENICHI
Owner KK TOSHIBA
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