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Method and device for smoothing of image data ,and smoothing program

An image data and processor technology, applied in the field of image data smoothing, can solve problems such as different smoothing results, color bar signal defects, etc.

Inactive Publication Date: 2004-06-09
PIONEER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the frame image data (30 frames per second) is smoothed by a pre-filter that performs smoothing in field units, due to the difference in the image on the line level in some image content, the smoothing results of each field are not the same, so Defects such as color bars may occur

Method used

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  • Method and device for smoothing of image data ,and smoothing program
  • Method and device for smoothing of image data ,and smoothing program
  • Method and device for smoothing of image data ,and smoothing program

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Embodiment Construction

[0030] Preferred embodiments of the present invention will now be described below with reference to the accompanying drawings. Note that the following embodiments show examples of applying the present invention to a prefilter for preparing compression encoding in an MPEG system.

[0031] compression coding system

[0032] figure 2 The configuration of a compression encoding system of image data to which the prefilter according to the present invention is applied is schematically shown. Such as figure 2 As shown in , the original image data D0 output from the image source 5 is supplied to the prefilter (smoothing filter) 10 of the present invention. Note that the image source 5 can be a certain storage medium, such as various types of optical discs and hard disks, and the original image data D0 can be various types of image data, including 60 field image data, 30 frame image data and 2-3 pull-down Frame image data, as described above.

[0033] The pre-filter 10 suitably ...

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Abstract

Image data (D0) which includes a plurality of object unit image data arranged in time series, such as field images, is supplied from an image source. The object unit image data subjected to the smoothing process is divided into blocks of a predetermined size. Then, a difference between the object unit image data and preceding unit image data which is immediately before the object unit image data, and a difference between the object unit image data and subsequent unit image data which is immediately after the object unit image data are determined for a plurality of blocks, based on a pixel value. The object unit image data is smoothed with one of the preceding unit image data and the subsequent unit image data having a smaller difference.

Description

technical field [0001] The present invention relates to smoothing processing of image data related to compression coding of image data. Background technique [0002] Generally, since moving picture information has a huge amount of data, when it is in a storage medium, a huge storage capacity is required to store the moving picture information. Therefore, there are known techniques for image compression encoding so that moving images can be stored in recording media such as optical discs. As a compression coding method of moving pictures, MPEG (Moving Picture Experts Group) is considered as a representative example. [0003] The compression method of a compression coding system such as MPEG is to perform discrete cosine transform (DCT) and quantization of original image data on each block of a preset number of image elements (pixels) such as 8×8 pixels, thereby eliminating the original High-frequency components of image data. Therefore, when the original image data is comp...

Claims

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Application Information

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IPC IPC(8): H04N19/117G06K9/36G06K9/40G06T5/00G06T5/20H04N7/00H04N19/136H04N19/157H04N19/176H04N19/186H04N19/196H04N19/50H04N19/61H04N19/625H04N19/80H04N19/86
CPCH04N19/00224H04N19/00278G06T2207/20012G06T5/20H04N19/00066G06T5/002G06T2207/20021G06T7/0085G06T2207/20192G06T5/001H04N19/176H04N19/117H04N19/16G06T7/13G06T5/70
Inventor 桥本和宪
Owner PIONEER CORP
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