Moving image compression device, moving image decoding device, image compression device, image decoding device, imaging device, and non-transitory medium storing program

A non-transitory computer-readable storage medium storing instructions thereon that, when executed by a processor, cause the processor to:

• obtain a RAW moving image which has plural frames associated in an order of imaging, the frames having pixels of three different color components which are disposed periodically according to a color array with two rows and two columns;
• separate, in a target frame, a first pixel group which corresponds to a first color component of odd rows, a second pixel group which corresponds to the first color component of even rows, and a third pixel group which corresponds to a second color component different from the first color component;
• alternately array, 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
• perform inter-frame prediction coding compression on the first image, the second image, and a third image which includes the third pixel group.

An image compression device, comprising a processor and a memory, the processor being configured to:

• obtain a RAW image having pixels of plural color components which are disposed two-dimensionally;
• separate a first color component in the RAW image into a first image and a second image;
• perform compression processing on the first image based on a subtraction between images of the first image and the second image;
• and
• perform compression processing on a third image in which a second color component different from the first color component is separated from the RAW image.

A moving image decoding device, comprising a processor and a memory, the processor being configured to:

• obtain 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, a second pixel group corresponding to the first color component of even rows of each frame, and a third pixel group corresponding to a second color component different from the first color component;
• alternately array, in a time base direction, a first image including the first pixel group and a second image including the second pixel group;
• then perform inter-frame prediction coding compression on the first image, the second image, and a third image including the third pixel group;
• decode the compressed RAW moving image data;
• and
• rearrange the first image and the second image of decoded RAW moving image data according to the color array.

An image decoding device, comprising a processor and a memory, the processor being configured to:

• obtain 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;
• perform compression processing on the first image based on a subtraction between images of the first image and the second image;
• perform compression processing on a third image in which a second color component different from the first color component is separated from the RAW image;
• decode the compressed RAW moving image data;
• and
• rearrange 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 storage medium storing instructions thereon that, when executed by a processor, cause the processor to:

• obtain 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, a second pixel group which corresponds to the first color component of even rows of each frame, and a third pixel group which corresponds to a second color component different from the first color component;
• alternately array, in a time base direction, a first image which includes the first pixel group and a second image which includes the second pixel group;
• then perform inter-frame prediction coding compression on the first image, the second image, and a third image which includes the third pixel group;
• decode the compressed RAW moving image data;
• and
• rearrange the first image and the second image of decoded RAW moving image data according to the color array.