Image processing device and method

Abstract

The present technology relates to image processing device and method that achieve a reduction in a buffer size.The image processing device partitions a unit of processing into partitioned processing units each of which corresponds to a VPDU size or is equal to or smaller than the VPDU size, the unit of processing being used for calculation of a cost that is used for determining whether or not to perform bidirectional prediction. The image processing device makes the determination by using the cost calculated based on the partitioned processing units. The present technology is applicable to encoding devices or decoding devices.

1 . An image processing device comprising:
 a control unit configured to partition a unit of processing into partitioned processing units each of which corresponds to a VPDU size or is equal to or smaller than the VPDU size, the unit of processing being used for calculation of a cost that is used for determining whether or not to perform bidirectional prediction; and   a determination unit configured to make the determination by using the cost calculated based on the partitioned processing units.   
     
     
         2 . The image processing device according to  claim 1 , wherein
 the determination unit makes the determination by using the cost calculated by each of the partitioned processing units.   
     
     
         3 . The image processing device according to  claim 1 , wherein
 the determination unit makes, by using the cost calculated for a first one of the partitioned processing units, the determination on the first one of the partitioned processing units, and makes the determination on another of the partitioned processing units by using a result of the determination on the first one of the partitioned processing units.   
     
     
         4 . The image processing device according to  claim 1 , wherein
 the determination unit makes the determination by each of the partitioned processing units by using the cost calculated for each of partial regions in the partitioned processing units.   
     
     
         5 . The image processing device according to  claim 1 , wherein
 the determination unit makes the determination by each of the partitioned processing units based on a flag set to each of the partitioned processing units, the flag indicating whether or not to perform the bidirectional prediction.   
     
     
         6 . The image processing device according to  claim 1 , wherein
 the bidirectional prediction includes the bidirectional prediction employing BIO.   
     
     
         7 . The image processing device according to  claim 1 , wherein
 the bidirectional prediction includes the bidirectional prediction employing FRUC or DMVR.   
     
     
         8 . An image processing method for causing an image processing device to:
 partition a unit of processing into partitioned processing units each of which corresponds to a VPDU size or is equal to or smaller than the VPDU size, the unit of processing being used for calculation of a cost that is used for determining whether or not to perform bidirectional prediction; and   make the determination by using the cost calculated based on the partitioned processing units.