Title:
画像符号化装置及びその制御方法
Document Type and Number:
Japanese Patent JP5523177
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an image encoding device generating interpolating data capable of precisely decoding a reduced image into an original image in addition to effectively using the reduced image.SOLUTION: An image encoding device encoding a plurality of blocks one of which is 2×2 pixels defined by pixel X, Xa, Xb, and Xc, comprises: means for generating a reduced image by outputting average value of pixel value of the 2×2 pixels as pixel value of one pixel that is a reduced image of a block of interest; means for generating differential value between pixel value of one pixel that is a reduced image of the block of interest and pixel x of the block of interest; and means for generating interpolating data to decode pixel Xa, Xb, and Xc. The interpolating data includes one of: a first information showing that Xa, Xb, and Xc of the block of interest are matched with a pixel X; a second information showing that the Xa, Xb, and Xc are matched with a pixel X of an adjacent block thereof; or a third information showing pixel value of the Xa, Xb, and Xc.
Inventors:
Naoki Ito
Application Number:
JP2010092507A
Publication Date:
June 18, 2014
Filing Date:
April 13, 2010
Export Citation:
Assignee:
Canon Inc
International Classes:
G06T3/40; H04N1/393; H04N1/41
Domestic Patent References:
| JP2006197074A | ||||
| JP2008092105A |
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa