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Image display device, image recording and reproduction device, and image processing method

An image display device and image technology, applied in the field of image processing, can solve problems such as signal degradation and failure to restore the signal, and achieve the effect of reducing flicker noise

Inactive Publication Date: 2011-07-20
HITACHI CONSUMER ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In general, in moving image coding, high compression efficiency is achieved through processing such as predictive coding, frequency conversion, quantization, and variable length coding that utilizes the correlation of images in the spatial direction or time direction, but in the above-mentioned coding process A non-reversible encoding method that cannot be restored to the original signal is used, so the signal degradation occurs in the decoded image relative to the original original image

Method used

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  • Image display device, image recording and reproduction device, and image processing method
  • Image display device, image recording and reproduction device, and image processing method
  • Image display device, image recording and reproduction device, and image processing method

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0032] figure 1 is a block diagram of the structure of the image display device according to Embodiment 1 of the present invention.

[0033] figure 1 The shown image display device (100) includes an input unit (101), an image decoding unit (102), a first buffer unit (103), a second buffer unit (104), a third buffer unit (105), A filter unit (106), a switching unit (107), and an output unit (108). Here, the first buffer unit (103), the second buffer unit (104), the third buffer unit (105), the filter unit (106), and the switching unit (107) constitute an image processing unit (109) . Each of the above-mentioned units may be configured by hardware or software. In addition, it may be a module combining hardware and software.

[0034] Below, explain figure 1 The operation of the image display device shown.

[0035] exist figure 1 Among them, the coded image data (150) input from the input unit (101) is, for example, composed of figure 2 The data generated by the image en...

Embodiment 2

[0134] Hereinafter, an image display device according to Embodiment 2 of the present invention will be described. In the same manner as in Example 1, using figure 1 A structural block diagram of the image display device in this embodiment will be described. Additionally, for figure 1 The image display device (100) shown is omitted in detail.

[0135] Below, for figure 1 The first buffer part (103), the second buffer part (104), and the third buffer part (105), with Figure 4 (a) is shown as an example.

[0136] in will Figure 4 (a) as figure 1 When the decoded picture (151) of the picture is decoded, I0 (401) is stored in the first buffer unit (103) as a decoded picture coded using the intra prediction coding unit. Next, I9 (410) is stored in the second buffer unit (104) as a decoded image encoded using the intra prediction coding unit temporally behind I0 (401). Next, P10 (411) to P17 (418), which are temporally later than I9 (410), are stored in the third buffer uni...

Embodiment 3

[0152] Figure 10 It is a configuration diagram showing an example of a recording / playback device to which the image signal processing of the first or second embodiment is applied. Here, the image signal processing unit (1003) has the same configuration as the image decoding unit (102) and image processing unit (109) of the first embodiment. Therefore, the operation of the image signal processing unit (1003) is as described in Embodiment 1 or Embodiment 2, and thus detailed description thereof will be omitted.

[0153] The recording / playback device (1000) includes: an input unit (1001) for inputting an encoded image signal encoded by a predetermined encoding method; One of the recording and playback switching parts (1002) in the reproduction of the image stored in the video recording and playback switching part (1002); the content storage part (1004) of recording content when the recording and playback switching part (1002) has carried out the video recording operation; The ...

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PUM

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Abstract

Disclosed is an image processing technique which more suitably reduces flicker noise. An image display device is comprised of an input unit which inputs encoded image data containing images encoded by intraframe prediction and interframe prediction, an image decoder which decodes the encoded image data, a filter unit which filters the decoded images output from the image decoder, and a display unit which displays the image after filtering. The filter unit performs at least a process to correct the pixel values in a decoded image decoded by interframe prediction immediately preceding in time a decoded image decoded by intraframe prediction of the decoded images output from the image decoder.

Description

technical field [0001] The present invention relates to an image processing technology for decoding, reproducing, and displaying encoded image signals. Background technique [0002] As a method for efficiently encoding and recording or transmitting moving image data such as TV signals, encoding methods such as the MPEG (Moving Picture Experts Group) method have been established, as MPEG-1 standards, MPEG-2 standards, MPEG -4 specifications, etc. and become an international standard encoding method. Further, as a means of increasing the compression ratio, the H.264 / AVC (Advanced Video Coding, Advanced Video Coding) standard and the like have been established. [0003] In general, in moving image coding, high compression efficiency is achieved through processing such as predictive coding, frequency conversion, quantization, and variable length coding that utilizes the correlation of images in the spatial direction or time direction, but in the above-mentioned coding process ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/32H04N19/50H04N5/93H04N19/117H04N19/134H04N19/136H04N19/159H04N19/167H04N19/176H04N19/196H04N19/20H04N19/44H04N19/503H04N19/51H04N19/593H04N19/61H04N19/625H04N19/80H04N19/85H04N19/91
CPCH04N19/00781H04N7/26377H04N7/50H04N19/00733H04N7/362H04N19/00909H04N7/26888H04N19/0089H04N19/51H04N19/61H04N19/80H04N19/86
Inventor 伊藤浩朗轻部勋高桥昌史小松佑人
Owner HITACHI CONSUMER ELECTRONICS CORP