Nonlinear, prediction filter for hybrid video compression

An encoder comprising:

• a motion compensation prediction module to perform motion compensation to generate a motion compensated prediction using a block from a previously coded frame;
• a non-linear prediction filter to perform non-linear filtering on the block in the transform domain with a non-linear filter as part of a fractional interpolation process, wherein the non-linear prediction filter comprises
• a forward transform module to apply a transform to the motion compensated prediction to obtain a first set of transform coefficients,
• a module to perform thresholding on each transform coefficient based on a threshold to identify a set of one or more transform coefficients to change and to modify the first set of transform coefficients to create a second set of transform coefficients by changing transform coefficients in the set of one or more transform coefficients, and
• an inverse transform module to apply an inverse transform to the second set of transform coefficients to generate the motion compensated non-linear prediction;
• a subtractor to subtract the motion compensated non-linear prediction from a block in a current frame to produce a residual frame;
• and
• a coder to code the residual frame.

An article of manufacture having one or more non-transitory computer readable media storing instructions thereon which, when executed by a system, cause the system to perform a method comprising:

• performing motion compensation to generate a motion compensated prediction using a block from a previously coded frame;
• performing non-linear filtering on the motion compensated prediction in the transform domain with a non-linear filter as part of a fractional interpolation process to generate motion compensated non-linear prediction, wherein performing non-linear filtering comprises
• applying a transform to the motion compensated prediction to obtain a first set of transform coefficients,
• thresholding each transform coefficient based on a threshold to identify a set of one or more transform coefficients to change,
• modifying the first set of transform coefficients to create a second set of transform coefficients by changing transform coefficients in the set of one or more transform coefficients, and
• applying an inverse transform to the second set of transform coefficients to generate the motion compensated non-linear prediction;
• subtracting the motion compensated non-linear prediction from a block in a current frame to produce a residual frame;
• and
• coding the residual frame.

A method comprising:

• generating a predicted block using a block from a previously decoded frame;
• performing non-linear filtering on the predicted block in the transform domain with a non-linear prediction filter as part of a fractional interpolation process to generate a non-linear prediction, wherein performing non-linear filtering comprises
• applying a transform to the predicted block to obtain a first set of transform coefficients,
• thresholding each transform coefficient based on a threshold to identify a set of one or more transform coefficients to change,
• modifying the first set of transform coefficients to create a second set of transform coefficients by changing transform coefficients in the set of one or more transform coefficients, and
• applying an inverse transform to the second set of transform coefficients to generate the non-linear prediction;
• decoding a residual frame;
• and
• adding the residual frame to the non-linear prediction.

An apparatus comprising:

• a motion compensation unit to generate a predicted block using a block from a previously decoded frame;
• a non-linear prediction filter to perform non-linear filtering on the predicted block in the transform domain with a non-linear prediction filter as part of a fractional interpolation process to generate a non-linear prediction, wherein the non-linear prediction filter comprises
• a forward transform module to apply a transform to the predicted block to obtain a first set of transform coefficients,
• a module to perform thresholding on each transform coefficient based on a threshold to identify a set of one or more transform coefficients to change and to modify the first set of transform coefficients to create a second set of transform coefficients by changing transform coefficients in the set of one or more transform coefficients, and
• an inverse transform module to apply an inverse transform to the second set of transform coefficients to generate the non-linear prediction;
• a decoder to decode a residual frame;
• and
• an adder to add the residual frame to the non-linear prediction.

An article of manufacture having one or more non-transitory computer readable media storing instructions thereon which, when executed by a system, cause the system to perform a method comprising:

• generating a predicted block using a block from a previously decoded frame;
• performing non-linear filtering on the predicted block in the transform domain with a non-linear prediction filter as part of a fractional interpolation process to generate a non-linear prediction, including
• applying a transform to the predicted block to obtain a first set of transform coefficients,
• thresholding each transform coefficient based on a threshold to identify a set of one or more transform coefficients to change,
• modifying the first set of transform coefficients to create a second set of transform coefficients by changing transform coefficients in the set of one or more transform coefficients, and
• applying an inverse transform to the second set of transform coefficients to generate the non-linear prediction;
• decoding a residual frame;
• and
• adding the residual frame to the non-linear prediction.