Displaying method, displaying apparatus, filtering unit, filtering process method, recording medium for storing filtering process programs, and method for processing images

A displaying- apparatus having a display device which comprises one pixel by aligning three light-emitting elements to emit respective colors of R, G and B in a juxtaposing direction, a driver for independently controlling the respective light-emitting elements of said display device, and a frame memory for providing image data to said driver,said displaying apparatus comprising:

• a unit for extracting a line image, which comprises one line parallel to the juxtaposing direction of the light-emitting elements, from a three-time image;
• a unit for determining a work region in which an M sub-pixel is added to the front side of said line image and an N sub-pixel is added to the rear side thereof in the juxtaposing direction where M and N are natural numbers;
• a unit for reading out a background image of a region corresponding to the work region from the frame memory;
• a unit for blending said read out background image, whose precision is made the same precision as the three-time image in a pseudo state, and said line image, and acquiring a blend image;
• and
• a unit for writing image data resulting from said blend image in a region corresponding to said work region of the frame memory.

An image information processing method comprising repeatedly carrying out:

• a first step comprising reading out display data, which is stored in terms of expression in a first color space, from a portion region of a frame memory;
• a second step comprising converting the read out display data from the first color space to a second color space;
• a third step comprising carrying out a specified process on the display data converted to the second color space;
• a fourth step comprising converting the display data, to which the process in the third step has been applied, from the second color space to the first color space;
• and
• a fifth step comprising writing the display data, which has been converted to the first color space in the fourth step, in the portion region;
• wherein correction information to be referred to is generated in the conversion in said second step along with expression in the first color space in the third step;
• the correction information is written in said portion region along with the expression in the first color space in the fourth step, and the correction information is read out along with the display data stored in terms of the expression in the first color space in the first step.

A displaying apparatus having a display device which comprises one pixel by disposing three light-emitting elements emitting respective colors of R, G and B in a juxtaposing direction, a driver for independently controlling the respective light-emitting elements of said display device, and a frame memory providing display data to said driver, comprising:

• a unit for reading out, from said frame memory, R, G and B values showing a background image and correction information D1 and D2 to be referred to when converting a color space RGB to a color space YCbCr;
• a decoding unit for converting said read out background image from the color space RGB to the color space YCbCr by the following expressions:
• Y2=G,
• Y1=Y2−D1,
• Y3=Y2−D2,
• Cr=Y1−R, and
• Cb =Y3−B, where
• Y1, Y2 and Y3 are brightness components and
• D1 and D2 are correction information;
• a blending unit for producing a blend image by superimposing a foreground image on the background image converted to the color space YCbCr;
• an encoding unit for converting display data resulting from the blend image from the color space YCbCr to the color space RGB by the following expressions:
• R=Y1−Cr,
• G=Y2,
• B=Y3−Cb,
• D1=Y2−Y1, and
• D2=Y2−Y3, where
• Y1, Y2 and Y3 are brightness components and
• D1 and D2 are correction information;
• and
• a unit for writing R, G and B values and the correction information D1 and D2, which are outputted by the encoding unit, in said frame memory.

A displaying apparatus having a display device which comprises one pixel by disposing three light-emitting elements emitting respective colors of R, G and B in a juxtaposing direction, a driver for independently controlling the respective light-emitting elements of said display device, and a frame memory providing display data to said driver, comprising:

• a unit for reading out, from said frame memory, R, G and B values showing a background image and correction information D1 and D2 to be referred to when converting a color space RGB to a color space YCbCr;
• a decoding unit for converting said read out background image from the color space RGB to the color space YCbCr by the following expressions:
• 6 ( Y2 Cb Cr ) = ( 1 0 1.402 1 - 0.344 - 0.714 1 1.772 0 ) - 1 ⁢ ( R + D1 G B + D2 )
• Y1=Y2−D1, and Y3=Y2−D2, where
• Y1, Y2, and Y3 are brightness components and
• D1, and D2 are correction information;
• a blending unit for producing a blend image by superimposing a foreground image on the background image converted to the color space YCbCr;
• an encoding unit for converting display data resulting from the blend image from the color space YCbCr to the color space RGB by the following expressions:
• R=Y1+1.402 Cr,
• G=Y2−0.344 Cb −0.714 Cr,
• B=Y3+1.772 Cb,
• D1=Y2−Y1, and D2=Y2−Y3, where
• Y1, Y2, and Y3 are brightness components and
• D1 and D2 are correction information;
• and
• a unit for writing R, G and B values and the correction information D1, D2, which are outputted by the encoding unit, in said frame memory.