US 7,599,565 B2 · Method and device for transform-domain video editing

Abstract

A method and device for editing video data to achieve a video effect in a video sequence. From an encoder, transform coefficients of part of the video sequence are obtained. The transform coefficients are mixed with other transform coefficients in a combining module. The output of the combining module is quantized and further processed to provide an edited video bitstream. In the combining module, transform coefficients are multiplied with weighting parameters to achieve different video effects. Furthermore, logo data from a memory can be transformed into further transform coefficients for mixing in order to achieve a logo insertion effect. Moreover, prediction error and motion compensation information obtained from video data can be used to provide a reference frame, and the transform data from the reference frame can be used for mixing to achieve a blending effect.

Claims21

Dependent claims

A method comprising:

acquiring in a video decoder video data indicative of a plurality of first transform coefficients from a first bitstream;
acquiring in the video decoder video data indicative of a plurality of second transform coefficients different from the first transform coefficients,
obtaining first predicted video data based on motion information from a second bitstream and a previously constructed part of the second bitstream;
performing transform operation on the first predicted video data for obtaining a plurality of third transform coefficients;
and
combining the first transform coefficients, the second transform coefficients and the third transform coefficients for achieving a video effect.

3 more elements

An apparatus configured to acquire video data indicative of a plurality of first transform coefficients from a first bitstream and video data indicative of a plurality of second transform coefficients different from the first transform coefficients, said apparatus comprising:

a motion compensated prediction processor for obtaining first predicted video data based on motion information from the second bitstream and a previously constructed part of the second bitstream;
a transform processor for performing transform operation on the first predicted video data for obtaining a plurality of third transform coefficients;
and
a combining processor for combining the first transform coefficients, the second transform coefficients and the third transform coefficients for achieving a video effect.

1 more element

An apparatus comprising:

means for acquiring video data indicative of a plurality of first transform coefficients from a first bitstream;
means for acquiring video data indicative of a plurality of second transform coefficients different from the first transform coefficients,
means for obtaining first predicted video data based on motion information from the second bitstream and a previously constructed part of the second bitstream;
means for performing transform operation on the first predicted video data for obtaining a plurality of third transform coefficients;
and
means for combining the first transform coefficients, the second transform coefficients and the third transform coefficients for achieving a video effect.

3 more elements

Dependencies are inferred from the claim text.

Method and device for transform-domain video editing

Life of this patent

Method and device for transform-domain video editing

Life of this patent

Abstract

Claims21