8-Bit and 16-Bit RGB Images :: Displaying Bit-Mapped Images (Graphics)

Graphics

8-Bit and 16-Bit RGB Images

The color components of an 8-bit RGB image are integers in the range [0, 255] rather than floating-point values in the range [0, 1]. A pixel whose color components are (255,255,255) is displayed as white. The image command displays an RGB image correctly whether its class is double, uint8, or unit16.

```
image(RGB);
```

To convert an RGB image from double to uint8, first multiply by 255.

```
RGB8 = uint8(round(RGB64*255));
```

Conversely, divide by 255 after converting a uint8 RGB image to double.

```
RGB64 = double(RGB8)/255
```

To convert an RGB image from double to uint16, first multiply by 65535.

```
RGB16 = uint16(round(RGB64*65535));
```

Conversely, divide by 65535 after converting a uint16 RGB image to double.

```
RGB64 = double(RGB16)/65535;
```

8-Bit and 16-Bit Intensity Images Mathematical Operations Support for uint8 and uint16