18833579. IMAGE DECODING METHOD AND DEVICE (LG Electronics Inc.)
IMAGE DECODING METHOD AND DEVICE
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IMAGE DECODING METHOD AND DEVICE
This abstract first appeared for US patent application 18833579 titled 'IMAGE DECODING METHOD AND DEVICE
Original Abstract Submitted
An image decoding method performed by a decoding device according to the present disclosure comprises the steps of: deriving neighboring samples for sign prediction of a current block; deriving costs of sign combination candidates for transform coefficients of the current block on the basis of the neighboring samples; predicting signs of the transform coefficients from the sign combination candidates on the basis of the costs; deriving residual samples of the current block on the basis of the predicted signs; and generating a reconstructed picture on the basis of the residual samples.