IMAGE PROCESSING METHOD AND IMAGE PROCESSING APPARATUS
An image processing method prepares image data having luminance information (Y) and chrominance information (UN) including first chrominance information (U) being information of a color difference between a blue component and luminance and second chrominance information (V) being information of a color difference between a red component and the luminance. The method then outputs the luminance information and the chrominance information in the image data forming a first frame as data forming the first frame, and further outputs the luminance information in the image data forming a second frame subsequent to the first frame and the chrominance information in the image data forming the first frame as data forming the second frame.
1 . An image processing method comprising:
preparing image data having luminance information and chrominance information including first chrominance information being information of a color difference between a blue component and luminance and second chrominance information being information of a color difference between a red component and the luminance;
outputting the luminance information and the chrominance information in the image data forming a first frame as data forming the first frame; and
outputting the luminance information in the image data forming a second frame subsequent to the first frame and the chrominance information in the image data forming the first frame as data forming the second frame.
2 . The image processing method according to claim 1 , wherein part of the chrominance information output as the data forming the second frame is chrominance information added to the second frame.
3 . The image processing method according to claim 2 , wherein the chrominance information added to the second frame is determined based on a comparison result between an image of the first frame and an image of the second frame.
4 . The image processing method according to claim 1 , wherein part of the luminance information output as the data forming the second frame is the luminance information of the first frame.
5 . The image processing method according to claim 4 , wherein a pixel where the luminance information of the first frame is used is determined based on a comparison result between an image of the first frame and an image of the second frame.
6 . The image processing method according to claim 2 , wherein part of the luminance information output as the data forming the second frame is the luminance information of the first frame.
7 . An image processing apparatus comprising:
a chrominance information separating unit that separates chrominance information from image data in a first frame having luminance information and chrominance information including first chrominance information being information of a color difference between a blue component and luminance and second chrominance information being information of a color difference between a red component and the luminance;
a storage unit that stores the chrominance information of the first frame separated by the chrominance information separating unit; and
a luminance and chrominance combining unit that combines luminance information of a second frame and the chrominance information of the first frame stored in the storage unit.
8 . The image processing apparatus according to claim 7 , wherein part of the chrominance information combined in the luminance and chrominance combining unit is chrominance information added to the second frame.
9 . The image processing apparatus according to claim 8 , wherein
a unit of detecting a change in the chrominance information between the first and second frames is included, and
the chrominance information added to the second frame is determined based on a change in the chrominance information.
10 . The image processing apparatus according to claim 7 , wherein part of the luminance information combined in the luminance and chrominance combining unit is the luminance information of the first frame.
11 . The image processing apparatus according to claim 10 , wherein
a unit of detecting a change in the luminance information between the first and second frames is included, and
a pixel where the luminance information of the first frame is used is determined based on a change in the luminance information.
12 . The image processing apparatus according to claim 8 , wherein part of the luminance information combined in the luminance and chrominance combining unit is the luminance information of the first frame.