US2020221136A1PendingUtilityA1

Strong intra smoothing for in rext

Assignee: SONY CORPPriority: Mar 3, 2014Filed: Mar 17, 2020Published: Jul 9, 2020

Est. expiryMar 3, 2034(~7.6 yrs left)· nominal 20-yr term from priority

Inventors:Ohji Nakagami Teruhiko Suzuki Ali Tabatabai Jun Xu

H04N 19/186H04N 19/42H04N 19/86H04N 19/117H04N 19/157H04N 19/179

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Claims

Abstract

Based on conditions or restrictions, Strong Intra Smoothing (SIS) is enabled or disabled. SIS is not allowed for chroma when the chroma format is 444, and SIS is not allowed for chroma when the chroma format is 422 or 444.

Claims

exact text as granted — not AI-modified

What is claimed is: 
     
         1 . An image processing device, comprising:
 a processor configured to:
 encode an image such that non-application of strong intra smoothing to chroma in a case that chroma format is 444; and 
 encode the image such that application of the strong intra smoothing to the chroma in a case that all of the following conditions are true: 
   strong_intra_smoothing_enabled_flag is equal to 1,   nTbS is equal to 32,   cldx is equal to 0,   Abs(p[−1][−1]+p[nTbS*2−1][−1]−2*p[nTbS−1][−1]&lt;(1&lt;&lt;(BitDepthY−5)),   Abs(p[−1][−1]+p[−1][nTbS*2−1]−2*p[−1][nTbS−1])&lt;(1&lt;&lt;(BitDepthY−5)).   
     
     
         2 . An image processing method, comprising:
 in an image processing device:   encoding an image such that non-application of strong intra smoothing to chroma in a case that chroma format is 444; and   encoding the image such that application of the strong intra smoothing to the chroma in a case that all of the following conditions are true:   strong_intra_smoothing_enabled_flag is equal to 1,   nTbS is equal to 32,   cldx is equal to 0,   Abs(p[−1][−1]+p[nTbS*2−1][−1]−2*p[nTbS−1][−1]&lt;(1&lt;&lt;(BitDepthY−5)),   Abs(p[−1][−1]+p[−1][nTbS*2−1]−2*p[−1][nTbS−1])&lt;(1&lt;&lt;(BitDepthY−5)).   
     
     
         3 . An image processing device, comprising:
 a processor configured to:
 decode a bitstream in a state that strong intra smoothing is disable in a case that chroma format is 444; and 
 decode the bitstream in a state that the strong intra smoothing is enable in a case that all of the following conditions are true: 
   strong_intra_smoothing_enabled_flag is equal to 1,   nTbS is equal to 32,   cldx is equal to 0,   Abs(p[−1][−1]+p[nTbS*2−1][−1]−2*p[nTbS−1][−1]&lt;(1&lt;&lt;(BitDepthY−5)),   Abs(p[−1][−1]+p[−1][nTbS*2−1]−2*p[−1][nTbS−1])&lt;(1&lt;&lt;(BitDepthY−5)).   
     
     
         4 . An image processing method, comprising:
 in an image processing device:
 decoding a bitstream in a state that strong intra smoothing is disable in a case that chroma format is 444; and 
 decoding the bitstream in a state that the strong intra smoothing is enable in a case that all of the following conditions are true: 
   strong_intra_smoothing_enabled_flag is equal to 1,   nTbS is equal to 32,   cldx is equal to 0,   Abs(p[−1][−1]+p[nTbS*2−1][−1]−2*p[nTbS−1][−1]&lt;(1&lt;&lt;(BitDepthY−5)),   Abs(p[−1][−1]+p[−1][nTbS*2−1]−2*p[−1][nTbS−1])&lt;(1&lt;&lt;(BitDepthY−5)).

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