VideoSensorType Property |
Namespace: ASCOM.DriverAccess
Exception | Condition |
---|---|
NotConnectedException | If the device is not connected |
DriverException | An error occurred that is not described by one of the more specific ASCOM exceptions. The device did not successfully complete the request. |
SensorType returns a value indicating whether the sensor is monochrome, or what Bayer matrix it encodes. The following values are defined:
Value | Enumeration | Meaning |
0 | Monochrome | Camera produces monochrome array with no Bayer encoding |
1 | Colour | Camera produces colour image directly, requiring not Bayer decoding. The monochrome pixels for the R, G and B channels are returned in this order in the ImageArray. |
2 | RGGB | Camera produces RGGB encoded Bayer array images |
3 | CMYG | Camera produces CMYG encoded Bayer array images |
4 | CMYG2 | Camera produces CMYG2 encoded Bayer array images |
5 | LRGB | Camera produces Kodak TRUESENSE Bayer LRGB array images |
Please note that additional values may be defined in future updates of the standard, as new Bayer matrices may be created by sensor manufacturers in the future. If this occurs, then a new enumeration value shall be defined. The pre-existing enumeration values shall not change.
In the following definitions, R = red, G = green, B = blue, C = cyan, M = magenta, Y = yellow. The Bayer matrix is defined with X increasing from left to right, and Y increasing from top to bottom. The pattern repeats every N x M pixels for the entire pixel array, where N is the height of the Bayer matrix, and M is the width.
RGGB indicates the following matrix:
X = 0 | X = 1 | |
Y = 0 | R | G |
Y = 1 | G | B |
CMYG indicates the following matrix:
X = 0 | X = 1 | |
Y = 0 | Y | C |
Y = 1 | G | M |
CMYG2 indicates the following matrix:
X = 0 | X = 1 | |
Y = 0 | C | Y |
Y = 1 | M | G |
Y = 2 | C | Y |
Y = 3 | G | M |
LRGB indicates the following matrix (Kodak TRUESENSE):
X = 0 | X = 1 | X = 2 | X = 3 | |
Y = 0 | L | R | L | G |
Y = 1 | R | L | G | L |
Y = 2 | L | G | L | B |
Y = 3 | G | L | B | L |
It is recommended that this function be called only after a connection is established with the camera hardware, to ensure that the driver is aware of the capabilities of the specific camera model.