Samsung S5PC100, User Manual

Page: 1152 / 1863

S5PC100 USER’S MANUAL (REV1.0) CAMERA INTERFACE
9.3
-37
Table 9.3- 5 Color Space Conversion Equations
Wide Narrow
CSCY2R
(601)
R = Y + 1.371(Cr-128)
G = Y – 0.698(Cr-128) – 0.336(Cb-128)
B = Y + 1.732(Cb-128)
R = 1.164(Y-16) + 1.596(Cr-128)
G = 1.164(Y-16) – 0.813(Cr-128) – 0.391(Cb-128)
B = 1.164(Y-16) + 2.018(Cb-128)
CSCY2R
(709)
R = Y + 1.540(Cr-128)
G = Y – 0.459(Cr-128) – 0.183(Cb-128)
B = Y + 1.816(Cb-128)
R = 1.164(Y-16) + 1.793(Cr-128)
G = 1.164(Y-16) – 0.534(Cr-128) – 0.213(Cb-128)
B = 1.164(Y-16) + 2.115(Cb-128)
CSCR2Y
(601)
Y = 0.299R + 0.587G + 0.114B
Cb = – 0.172R – 0.339G + 0.511B +128
Cr = 0.511R – 0.428G – 0.083B + 128
Y = 0.257R + 0.504G + 0.098B + 16
Cb = – 0.148R – 0.291G + 0.439B + 128
Cr = 0.439R – 0.368G – 0.071B +128
CSCR2Y
(709)
Y = 0.213R + 0.715G + 0.072B
Cb = – 0.117R – 0.394G + 0.511B +128
Cr = 0.511R – 0.464G – 0.047B + 128
Y = 0.183R + 0.614G + 0.062B + 16
Cb = – 0.101R – 0.338G + 0.439B + 128
Cr = 0.439R – 0.399G – 0.040B +128
DMA Mode Operation (Normal mode): DMA Input
→
DMA Output
Source image format is one of YCbCr420, YCbCr422, and RGB16/18/24-bit format. Destination image format is
one of YCbCr420, YCbCr422, and RGB 16/18/24 bit format. All source and destination image data need to be
stored in memory system aligned with double word boundary. Supports DMA operation. Therefore, the width of
source and destination image should be selected to satisfy the double word boundary condition.
FIFO Mode Operation: DMA Input
→
FIFO Output
In FIFO Mode, (LCDPathEn =1), two types of color space conversion such as RGB2YCbCr and YCbCr2RGB are
available like a DMA mode operation. Destination image is transferred to the FIFO in display controller (or some
other IP with FIFO interface) without additional memory bandwidth such as CAMIF-to-Memory and Memory-to-
Display Controller. Output data format is determined by only Output format register: OutFormat = RGB format (24-
bit RGB). The source image format and the destination image format restriction are described below table.