Patent AU-2019257506-B2 (AU)
Title: Image predictive encoding device, image predictive encoding method, image predictive encoding program, image predictive decoding device, image predictive decoding method, and image predictive decoding program
Inventor: SUZUKI YOSHINORI
IPC: H04N19/00
Filed: 2019-10-31
Granted: 2021-04-29
Abstract: IMAGE PREDICTIVE ENCODING DEVICE, IMAGE PREDICTIVE 
ENCODING METHOD, IMAGE PREDICTIVE ENCODING PROGRAM, 
IMAGE PREDICTIVE DECODING DEVICE, IMAGE PREDICTIVE 
DECODING METHOD, AND IMAGE PREDICTIVE DECODING 
PROGRAM 
ABSTRACT 
Disclosed is an image predictive decoding device and method. In one aspect, the image 
predictive decoding device comprises: data analysis means adapted to extract encoded data of 
indication information and encoded data of a residual signal from compressed data, the encoded 
data of indication information identifying a motion information set utilized for generation of a 
predicted signal of a target region of a decoding target of a plurality of regions in a picture, out 
of a plurality of pieces of motion information associated with neighboring regions neighboring 
the target region in the frame to be decoded and motion information associated with a region in 
the decoded previous frame; prediction information decoding means adapted to decode the 
encoded data of indication information to restore the indication information; motion information 
derivation means adapted to derive, one or more motion information sets out of plural pieces of 
motion information stored in memory, each of the one or more motion information sets 
including two pieces of motion information between which respective frame numbers identified 
with respective reference picture list identification and respective reference picture index are 
different from each other, or between which respective motion vectors are different from each 
other; motion information determination means adapted to determine, from the derived one or 
more motion information sets, a motion information set to be used in generation of the predicted 
signal of the target region based on the indication information; motion compensation means 
adapted to generate the predicted signal of the target region by combining two signals obtained 
from reconstructed pictures stored in the memory based on the motion information set of the 
motion information associated with neighboring regions neighboring the target region in the 
frame to be decoded and the motion information associated with a region in the decoded 
previous frame, or two pieces of motion information associated with neighboring regions
neighboring the target region in the frame to be decoded; motion information recording means 
adapted to store motion information utilized for generation of the predicted signal of the target 
region in the memory; residual signal restoration means adapted to restore a residual signal of 
the target region from the encoded data of the residual signal; and picture recording means 
adapted to reconstruct a pixel signal of the target region based on the predicted signal and the 
restored residual signal; and to store the reconstructed pixel signal as a part of a reconstructed 
picture.