Image coding method and coding device

An image coding and coding technology, applied in image communication, multi-programming device, code conversion, etc., can solve problems such as inability to flexibly use device resources, large impact, and large performance impact.

Inactive Publication Date: 2003-04-23
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0090] (1) The performance of the hardware that executes the corresponding software is greatly affected
If the hardware performance is low, good encoding results cannot be obtained; if the hardware performance is high, there is a possibility that device resources cannot be used flexibly
[0091] (2) In the case of executing the corresponding software on a multi-tasking operating system, the impact of other tasks is large

Method used

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  • Image coding method and coding device
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  • Image coding method and coding device

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Experimental program
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Effect test

Embodiment 1

[0320]According to the image coding method of Embodiment 1 of the present invention, one parameter among a plurality of coding parameters is determined, and other parameters are determined based on the set frame rate and the above-mentioned determined parameters.

[0321] Fig. 1 is a block diagram showing the configuration of an image coding apparatus according to Embodiment 1 of the present invention. As shown in the figure, the image encoding apparatus according to the first embodiment is composed of an encoder 101 and an encoding parameter determining apparatus 102. The encoder 101 includes a DCT processor 103, a quantizer 104, a variable length encoder 105, A bit stream generator 106, an inverse quantizer 107, an inverse DCT processor 108, and a predictive image generator 109, while the encoding parameter determination device 102 includes a resolution reference table 110.

[0322] Encoder 101 inputs data composed of a series of digitized still images as input image data, p...

Embodiment 2

[0356] According to the image encoding method of Embodiment 2 of the present invention, the encoding parameters are determined according to the set frame rate corresponding to the processing capability of the corresponding encoding device, and the processing capability is judged according to the operating frequency of the control device (CPU).

[0357] Fig. 4 is a block diagram showing the structure of an image coding apparatus according to Embodiment 2 of the present invention. As shown in the figure, the image encoding device according to the second embodiment is composed of an encoder 201, an encoding parameter determining device 202, and a processing capability determiner 211. The encoder 201 includes a DCT processor 203, a quantizer 204, and Variable length encoder 205 , bit stream generator 206 , inverse quantizer 207 , inverse DCT processor 208 and predictive image generator 209 , and encoding parameter determination device 202 includes encoding pattern reference table 2...

Embodiment 3

[0384] In the image encoding method of Embodiment 3 of the present invention, the encoding parameters are determined based on the frame rate set according to the processing capacity of the corresponding encoding device, and the processing capacity is judged according to the processing time.

[0385] Fig. 6 is a block diagram showing the structure of an image coding apparatus according to Embodiment 3 of the present invention. As shown in the figure, the image encoding device according to the third embodiment is composed of an encoder 301, an encoding parameter determining device 302, and a processing capability determiner 311. The encoder 301 includes a DCT processor 303, a quantizer 304, and Variable length encoder 305 , bit stream generator 306 , inverse quantizer 307 , inverse DCT processor 308 and predictive image generator 309 , and encoding parameter determination device 302 includes encoding pattern reference table 310 .

[0386] The encoder 301 is the same as the encod...

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Abstract

A method of coding video comprises the steps of: coding one or a plurality of still picture information of pro-video information consisting of the plurality of still picture information in which video is digitized according to coding parameters; and deciding one or more coding parameters based on one or more of resolution of the pro-video information, frame rate required for reproducing coded data resulting from coding, processing performance indicating processing capability of the coding apparatus which performs the video coding step, and one or a plurality of coding parameters which affects amount of processing of coding in the video coding step. Also disclosed is a method for varying audio coding parameters, and a method for sharing CPU time to execute concurrent tasks (audio and video coding, other tasks).

Description

[0001] This application is a divisional application with the application number No.97125283.1, the filing date being October 15, 1997, and the title of the invention being "image-sound encoding method, encoding device, and encoding program recording medium". technical field [0002] The present invention relates to image and sound encoding method, encoding device and encoding program recording medium, in particular to an encoding method and encoding device which use general-purpose computer resources to encode images, sounds or images and sounds under software control and encoding program recording media. technical background [0003] Regarding the technology of digitizing the image or sound of the original analog data to obtain digital image data or digital sound data, since the processing of digital data recording, editing, duplication, and transmission is easy, it is becoming a field of remarkable popularity and development. . One of the advantages of digitization is tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/66H04N7/50
CPCH04B1/665H04N19/00781H04N7/50H04N19/61H04N19/42H04N19/152
Inventor 辰巳英典堀内浩一松本孝夫米田亚旗河原荣治荒濑吉隆
Owner PANASONIC CORP
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