Video compression device, video decoding device, image compression device, image decoding device, imaging device, and program

An image compression device, comprising:

• an obtaining unit obtaining a RAW image having pixels of plural color components which are disposed two-dimensionally;
• a separating unit separating a first color component in the RAW image into a first image and a second image;
• and
• a compression processing unit performing compression processing on the first image based on a subtraction between images of the first image and the second image.

A moving image decoding device, comprising:

• an obtaining unit obtaining compressed RAW moving image data generated by separating, regarding plural frames having pixels of three different color components which are disposed periodically according to a color array with two rows and two columns, a first pixel group corresponding to a first color component of odd rows and a second pixel group corresponding to the first color component of even rows of each frame, and alternately arraying, in a time base direction, a first image including the first pixel group and a second image including the second pixel group, and then performing inter-frame prediction coding compression on the first image and the second image;
• a decoding processing unit decoding the compressed RAW moving image data;
• and
• an image conversion unit rearranging the first image and the second image of decoded RAW moving image data according to the color array.

An image decoding device, comprising:

• an obtaining unit obtaining compressed RAW moving image data generated by separating, into a first image and a second image, a first color component in a RAW image having pixels of plural color components which are disposed two-dimensionally, and performing compression processing on the first image based on a subtraction between images of the first image and the second image;
• a decoding processing unit decoding the compressed RAW moving image data;
• and
• an image conversion unit rearranging the first image and the second image of the decoded RAW moving image data according to a predetermined color array.

A non-transitory computer-readable medium storing a program causing a computer to execute, comprising:

• obtaining compressed RAW moving image data generated by separating, regarding plural frames having pixels of three different color components which are disposed periodically according to a color array with two rows and two columns, a first pixel group which corresponds to a first color component of odd rows and a second pixel group which corresponds to the first color component of even rows of each frame, and alternately arraying, in a time base direction, a first image which includes the first pixel group and a second image which includes the second pixel group, and then performing inter-frame prediction coding compression on the first image and the second image;
• decoding the compressed RAW moving image data;
• and
• rearranging the first image and the second image of decoded RAW moving image data according to the color array.