Coding method and image coding device for the compression of an image sequence

A technology for compressing images and image sequences, applied in decoding and system fields, to achieve the effect of data reduction and improvement

Inactive Publication Date: 2013-10-23
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The object of the present invention is to realize an improved coding method and an image coding device with which, especially also in the case of image sequences with complex movements, more efficient compression, in particular also lossless compression, can be achieved

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  • Coding method and image coding device for the compression of an image sequence
  • Coding method and image coding device for the compression of an image sequence
  • Coding method and image coding device for the compression of an image sequence

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Embodiment Construction

[0071] figure 1 The 4 images of the image sequence are shown, consisting of 4 consecutive photographs of the same slice, which were recorded within the scope of the dynamic cardiac image data set by means of a computed tomography device. These images show that various objects first perform deformation movements over time, unlike, for example, the case in conventional video photographs. It is assumed below that the method according to the invention is primarily used for compressing such medical-technical image data, even though the method is not limited thereto. Furthermore, for the sake of simplicity, it will also be assumed below that complete images of the image sequence are always encoded or decoded, wherein, however, as already described above, only specific image regions of the images can also be encoded and decoded.

[0072] according to figure 2 A first variant of the lossless encoding method 100 of the present invention is now described. Here, the description is ba...

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Abstract

The method (100) involves determining a dense motion vector field (Vn) for an actual image area (In) of an image sequence by comparison with an image area (In-1) of the image sequence. A confidence vector field (Kn) is determined for the actual image area, which indicates a confidence value for a motion vector for the motion vector field. Motion vector field reconstruction parameters (FP) for the actual image area are determined based on the motion and confidence vector fields. The motion vector field is reconstructed by using the reconstruction parameters. Independent claims are also included for the following: (1) a method for decoding an image sequence (2) a method for transmission and / or storage of an image sequence (3) an image coding device (4) an image decoding device (5) a system for transmission and / or storage of an image sequence (6) a computer program comprising instructions for executing a method for compression of image sequence.

Description

technical field [0001] The invention relates to an encoding method for predictive encoding to compress an image sequence, and a decoding method for decoding image regions of an image sequence encoded using such an encoding method. Furthermore, the invention relates to an image coding device and a corresponding image decoding device for compressing a sequence of images, as well as to a system comprising such an image coding device and an image decoding device. Background technique [0002] Hereinafter, an image sequence is to be understood as meaning any image sequence, for example a sequence of moving images on film or a sequence of temporally and / or spatially adjacent layers within an object, as detected by a medical technology device. Detected, the medical technology device can then be traversed virtually for observation. Furthermore, the image sequence also includes temporal correlations in the dynamic image data, for example three-dimensional time-dependent imaging or r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/50
CPCH04N19/00781H04N19/00145H04N19/00303H04N19/00684H04N19/00612H04N19/00024H04N19/00703H04N19/105H04N19/513H04N19/61H04N19/137H04N19/182H04N19/537H04N19/521H04N13/161H04N19/50H04N19/00
Inventor A.魏因利希P.阿蒙A.胡特A.考普
Owner SIEMENS AG
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