Scalable method for encoding a series of original images, and associated image encoding method, encoding device, and decoding device

An original image and image encoding technology, applied in the field of image decoding and sequence encoding devices, to reduce error proneness and improve image quality.
CN1993991BActive Publication Date: 2010-09-08SIEMENS AG
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SIEMENS AG
Publication Date
2010-09-08

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Abstract

In a method for encoding a series of original images, a series of decoded images is generated from the series of original images with the aid of a first encoding method following movement-compensated, predictive encoding. A starting image of a group of successive original images that are to be encoded is defined by means of a second encoding method following movement-compensated, temporally filtered partial band encoding based on a determined resolution of a decoded image to be used for generating an output image having a low resolution level of the image group to be encoded, before the images are encoded. At least one output image is generated from the successive original images of the group of images that are to be encoded and from at least one decoded image on each level of resolution during image encoding. The invention further includes an image decoding method by means of which encoded image data obtained by the disclosed image encoding method can be decoded. The invention finally includes an encoding and decoding device for carrying out the image encoding or image decoding method. For example, the decoded images are provided only with a reduced quality while the reconstituted images are of great quality.
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Description

technical field The present invention relates to a method for image encoding of a sequence of original images and an image decoding method for decoding images encoded by the above method. Furthermore, the invention relates to an encoding device for encoding a sequence of original images, as well as a decoding device for decoding images encoded using the method described above. Background technique According to [1], video coding methods for efficiently coding a sequence of images exploit specific signal properties. The positional and temporal dependence of the individual images or of the pixels of the images is used here. The better an image or video coding method is able to exploit this dependence between individual images or image points, the greater the compression ratio generally achievable. In the current video coding technology, there are basically two methods: hybrid coding methods, such as ITU-T H.263 or ITU-T H.264 standards [2, 3], and so-called three-dimensional...

Claims

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