Pixel and Planar Image Formats
Data storage for an image can be pixel-oriented or planar-oriented (planar). For images in pixel order, all channel values for each pixel are clustered and stored consecutively. Their layout depends on the color model and downsampling scheme.
Table
“Pixel-Order Image Formats”
lists all pixel-order image formats that are supported by the Intel IPP color conversion functions and shows the corresponding channel values order (here, group of underlined symbols represents one pixel and symbol A
denotes alpha-channel value). The last column of this table gives an example of an Intel IPP color conversion function that uses the respective image format.Image Format | Number of Channels | Channel Values Order | Example |
|---|---|---|---|
RGB RGB444 RGB555 RGB565 | 3 | R0 G0 B0 R1 G1 B1 R2 G2 B2 | ippi RGBT ToYUV_8u_C3 RippiYCbCrTo RGB444 _8u16u_C3 RippiYCbCrTo RGB555 _8u16u_C3 RippiYCbCrTo RGB565 _8u16u_C3 R |
RGB | 4 | R0 G0 B0 A0 R1 G1 B1 A1 | ippi RGB ToYUV_8u_AC4 R |
BGR BGR444 BGR555 BGR565 | 3 | B0 G0 R0 B1 G1 R1 B2 G2 R2 | ippiYCbCrTo BGR _8u_P3C3 RippiYCbCrTo BGR444 _8u16u_C3 RippiYCbCrTo BGR555 _8u16u_C3 RippiYCbCrTo BGR565 _8u16u_C3 R |
BGR | 4 | B0 G0 R0 A0 B1 G1 R1 A1 | ippi BGR ToHLS_8u_A C4 R |
YUV | 3 | Y0 U0 V0 Y1 U1 V1 Y2 U2 V2 | ippi YUV ToRGB_8u_ C3 R |
YUV | 4 | Y0 U0 V0 A0 Y1 U1 V1 A1 | ippi YUV ToRGB_8u_A C4 R |
4:2:2 YUV | 2 | Y0 U0 Y1 V0 Y2 U1 Y3 V1 | ippi YUV422 T0RGB_8u_ C2 C3R |
YCbCr | 3 | Y0 Cb0 Cr0 Y1 Cb1 Cr1 | ippi YCbCr ToRGB_8u_ C3 R |
YCbCr | 4 | Y0 Cb0 Cr0 A0 Y1 Cb1 Cr1 A1 | ippi YCbCr ToRGB_8u_A C4 R |
4:2:2 YCbCr | 2 | Y0 Cb0 Y1 Cr0 Y2 Cb1 Y3 Cr1 | ippi YCbCr422 ToRGB_8u_ C2 C3R |
4:2:2 YCrCb | 2 | Y0 Cr0 Y1 Cb0 Y2 Cr1 Y3 Cb1 | ippi YCrCb422 ToYCbCr422_8u_ C2 P3R |
4:2:2 CbYCr | 2 | Cb0 Y0 Cr0 Y1 Cb1 Y2 Cr1 Y3 | ippi CbYCr422 ToRGB_8u_ C2 C3R |
XYZ | 3 | X0 Y0 Z0 X1 Y1 Z1 X2 Y2 Z2 | ippi XYZ ToRGB_8u_ C3 R |
XYZ | 4 | X0 Y0 Z0 X1 Y1 Z1 X2 Y2 Z2 | ippi XYZ ToRGB_16u_A C4 R |
LUV | 3 | L0 U0 V0 L1 U1 V1 L2 U2 V2 | ippi LUV ToRGB_16s_ C3 R |
LUV | 4 | L0 U0 V0 A0 L1 U1 V1 A1 | ippi LUV ToRGB_32f_A C4 R |
YCC | 3 | Y0 C0 C0 Y1 C1 C1 Y2 C2 C2 | ippi YCC ToRGB_8u_C3 R |
YCC | 4 | Y0 C0 C0 A0 Y1 C1 C1 A1 | ippi YCC ToRGB_8u_A C4 R |
HLS | 3 | H0 L0 S0 H1 L1 S1 H2 L2 S2 | ippi HLS ToRGB_16u_C3 R |
HLS | 4 | H0 L0 S0 A0 H1 L1 S1 A0 | ippi HLS ToRGB_16u_AC4 R |
HSV | 3 | H0 S0 V0 H1 S1 V1 H2 S2 V2 | ippi HSV ToRGB_16s_C3 R |
HSV | 4 | H0 S0 V0 A0 H1 S1 C1 A1 | ippi HSV ToRGB_16s_AC4 R |
Planar image formats supported by the Intel IPP color conversion functions are listed in Table
“Planar Image Formats”
along with examples of the Intel IPP functions using that format. Planes layout and their relative sizes are shown in Figure Plane Size and Layout: 3-planes Images
and Figure Plane Size and Layout: 2-planes Images
.Image Format | Number of Planes | Planes Layout | Example | |||
|---|---|---|---|---|---|---|
pl.1 | pl.2 | pl.3 | ||||
Plane Size and Layout - 3-planes Images
Plane Size and Layout - 2-planes Images
