Image processing device and method

An image processing method in an image processing device, comprising the steps of:

• causing a supply means of the image processing device to supply a coefficient data group in each sub-band, in which image data of a predetermined number of lines is decomposed for each frequency band by a hierarchical analysis filter process and which includes coefficient data of one line or more in a sub-band of at least a lowest frequency component;
• causing a synthesis filter means of the image processing device to synthesize the coefficient data group supplied by the supply means in a predetermined order and generate image data in a baseband;
• causing a supply control means of the image processing device to control the supply means to supply the coefficient data at such a timing that the synthesis filter means can generate the image data in the baseband at a timing corresponding to a horizontal synchronization period indicating a period between horizontal synchronization signals of the image data;
• and
• causing a synthesis filtering control means of the image processing device to control the synthesis filter means to synthesize the coefficient data group supplied by the supply means in the predetermined order and generate the image data in the baseband at a timing corresponding to the horizontal synchronization period.

An image processing device comprising:

• a supply unit that supplies a coefficient data group in each sub-band, in which image data of a predetermined number of lines is decomposed for each frequency band by a hierarchical analysis filter process and which includes coefficient data of one line or more in a sub-band of at least a lowest frequency component;
• a synthesis filter unit that synthesizes the coefficient data group supplied by the supply unit in a predetermined order and generates image data in a baseband;
• a supply control unit that controls the supply unit to supply the coefficient data at such a timing that the synthesis filter unit can generate the image data in the baseband at a timing corresponding to a horizontal synchronization period indicating a period between horizontal synchronization signals of the image data;
• and
• a synthesis filtering control unit that controls the synthesis filter unit to synthesize the coefficient data group supplied by the supply unit in the predetermined order and generate the image data in the baseband at a timing corresponding to the horizontal synchronization period.