Method for encoding/decoding image and device for same
AssigneeLG Electronics Inc.
InventorsJunghak Nam, Chulkeun Kim
Life of this patent
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Abstract
Disclosed in the present invention are a method for encoding/decoding an image and a device for same. Particularly, a method for decoding an image may comprise the steps of: parsing the weight value (w) of a loop filter from a bitstream outputted from an encoder; applying the loop filter to an image obtained by using a prediction signal and a differential signal; and generating a recovered image and a reference image by performing the weighted sum of the recovered image before the loop filter is applied and the recovered image after the loop filter is applied, based on the w.
Claims8
A method for decoding an image, the method comprising:
- parsing a weight value (w) of a loop filter from a bit stream output from an encoder;
- applying the loop filter to an image obtained using a predicted signal and a residual signal;
- and
- generating one or more of a reconstructed image and a reference image by performing weighted sum of an image before the loop filter is applied and an image after the loop filter is applied, on the basis of the w,
- wherein the reconstructed image is generated by adding an image before 1-w-applied loop filter is applied and an image after w-applied loop filter is applied.
A device for decoding an image, the device comprising:
- an entropy-decoding unit parsing a weight value (w) of a loop filter from a bit stream output from an encoder;
- a filtering applying unit applying the loop filter to an image obtained using a predicted signal and a residual signal;
- and
- a reconstructed image and reference image generating unit generating one or more of a reconstructed image and a reference image by performing weighted sum of an image before the loop filter is applied and an image after the loop filter is applied, on the basis of the w,
- wherein the reconstructed image is generated by adding an image before 1-w-applied loop filter is applied and an image after w-applied loop filter is applied, and
- wherein the reference image is generated by adding an image before the w-applied loop filter is applied and an image after the 1-w-applied loop filter is applied.
Dependencies are inferred from the claim text.