Joint resolution or sharpness enhancement and artifact reduction for coded digital video
OwnerLilla Boroczky, Yibin Yanginventors
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Abstract
The present application is a new approach for jointly controlling resolution or sharpness enhancement and artifact reduction in order to improve picture quality for coded digital video. The present application provides a joint control that is based on a metric, the metric being used to determine which pixel and by how much it is to be enhanced and to determine on which pixel and to what degree to carry out the artifact reduction.
Claims25
A system for post-processing of decoded digital video, comprising:
- a metric calculation unit for calculation of a metric M for determining the type, aggressiveness, and order of application of a plurality of post-processing modules to the decoded digital video, the metric being based on block-based coding information obtained from the decoded digital video;
- a post processing unit for improving the quality of the decoded digital video based on the metric M, comprising the plurality of post-processing modules;
- and
- a control unit for controlling the activation of at least one post-processing module, of the plurality of post-processing modules of the post-processing unit, based on the metric M,
- wherein, the quality of the decoded digital video is improved by the control unit activating, in order, at least one of the plurality of post-processing modules and the at least one activated post-processing module processing the digital video based on the metric M.
The system of claim 15, wherein PAR1=30 and PAR2=10.
A method for post-processing of decoded digital video to improve the quality of the decoded digital video, comprising the steps of:
- providing a mechanism that calculates a metric M for determining the type, aggressiveness, and order of application of a plurality of post-processing modules to the decoded digital video, the metric being based on block-based coding information;
- providing a mechanism comprising a plurality of post-processing modules that post-process the decoded digital signal to improve the quality of the decoded digital video based on said metric;
- providing a control unit for the activation of at least one post-processing module, of the plurality of post-processing modules of the post-processing unit, based on said metric, calculating a metric M for controlling post-processing of each pixel of the block based on the metric;
- and
- activating at least one of the plurality of provided post-processing modules whose selection and processing is based on the calculated metric M to improve the quality of the decoded digital.
A program product stored on a recordable medium for performing post-processing of a decoded digital video, comprising:
- means for post-processing the decoded digital video based on a calculated metric;
- means for calculating a metric, based on block-based coding information obtained from the decoded digital video, for determining the type, aggressiveness, and order of application of the post-processing means to the decoded digital video;
- means for controlling the activation and order of activation of the post-processing means using the calculated metric.
Dependencies are inferred from the claim text.