Image processing device and image processing method

1. An image processing device comprising:

a control unit configured to receive a user's selection of a part of a source area of an image to be checked for image focus;

a first expansion unit which cuts and expands the part of the source area of first compression image data compressed in a first predetermined area as a unit of compression to produce first expansion part data;

a second expansion unit which cuts and expands a part of a destination area of second compression image data compressed in a second predetermined area as a unit of compression to produce second expansion part data;

a cutting unit which cuts data corresponding to the part of the source area from the first expansion part data;

a first producing unit which produces third expansion part data by writing the cut data corresponding to the source area on the destination area of the second expansion part data; and

a second producing unit which combines the second compression image data and compressed part data produced by compressing the third expansion part data in the second predetermined area as a unit of compression to produce third compression image data, wherein

the destination area is a magnified portion of the part of the source area of the image that is selected by the user.

2. The image processing device according to claim 1 , wherein the first producing unit produces the third expansion part data by overwriting the cut data of the source area on the destination area of the second expansion part data.

3. The image processing device according to claim 1 , further comprising:

an image processing unit which applies a predetermined image process to an image corresponding to the data in the source area cut by the cutting unit,

wherein the first producing unit produces third expansion part data based on the second expansion part data and an image corresponding to the cut data in the source area cut by the cutting unit to which the image process has been applied.

4. The image processing device according to claim 1 , wherein:

the first compression image data and the second compression image data are data compressed with the predetermined areas as a unit, having the fixed size; and

a encoder unit performs compression with the second predetermined area as a unit such that each size of compression data produced by the compression become the fixed size.

5. The image processing device according to claim 1 , further comprising a specifying unit which specifies each position storing compression data in the predetermined area as unit of compression including the first compression image data and the second compression image data.

6. The image processing device according to claim 1 , wherein the first predetermined area and the second predetermined area are the same area.

7. The image processing device according to claim 6 , wherein the first predetermined area and the second predetermined area are areas containing raster for forming an image as unit.

8. An image processing method comprising:

receiving a user's selection of a part of a source area of an image to be checked for image focus;

expanding the part of the source area of first compression image data compressed in a first predetermined area as a unit of compression to produce first expansion part data;

expanding a part of a destination area of second compression image data compressed in a second predetermined area as a unit of compression to produce second expansion part data;

cutting data corresponding to the part of the source area from the first expansion part data;

producing third expansion part data by writing the cut data corresponding to the source area on the destination area of the second expansion part data;

combining the second compression image data and compressed part data produced by compressing the third expansion part data in the second predetermined area as a unit of compression to produce third compression image data, wherein

the destination area is a magnified portion of the part of the source area of the image that is selected by the user.

9. The image processing device according to claim 1 , wherein the third expansion part data is different from the first expansion part data and the second expansion part data.

10. The method of claim 8 , wherein the third expansion part data is different from the first expansion part data and the second expansion part data.

11. The image processing device of claim 1 , further comprising:

a source address generation unit configured to receive information relating to the part of the source area, evaluate all memory addresses of the part of the source area based on the received information, and transmit address and data requirements of the source area based on the evaluated memory addresses;

a destination address generation unit configured to receive information relating to the destination area, evaluate all memory address of the destination area based on the received information, and transmit address and data requirements of the destination area based on the evaluated memory addresses; and

a memory control unit configured to receive the transmitted address and data requirements of the source area and the address and data requirements of the destination area, and transmit the information to the first producing unit and the second producing unit.

12. The image processing device of claim 8 , further comprising:

receiving information relating to the part of the source area;

evaluating all memory addresses of the part of the source area based on the received information;

transmitting address and data requirements of the source area based on the evaluated memory addresses;

receiving information relating to the destination area;

evaluating all memory address of the destination area based on the received information; and

transmitting address and data requirements of the destination area based on the evaluated memory addresses.