pcl::ImageType Namespace Reference

Standard image types. More...

Functions
String	Name (int type)
value_type	ToMaster (int type)

Detailed Description

Standard raw frame and image types supported by the current PixInsight/PCL platform. The same image types are supported by the XISF specification.

ImageType::Unknown	Unknown or unspecified image type.
ImageType::Bias	Bias frame.
ImageType::Dark	Dark frame.
ImageType::Flat	Flat field frame.
ImageType::Light	Light or science frame.
ImageType::MasterBias	Master bias frame.
ImageType::MasterDark	Master dark frame.
ImageType::MasterFlat	Master flat field frame.
ImageType::MasterLight	Master light or science frame.
ImageType::DefectMap	Defect pixel map.
ImageType::RejectionMapHigh	High pixel rejection map.
ImageType::RejectionMapLow	Low pixel rejection map.
ImageType::BinaryRejectionMapHigh	Binary high pixel rejection map.
ImageType::BinaryRejectionMapLow	Binary low pixel rejection map.
ImageType::SlopeMap	Pixel slope map.
ImageType::WeightMap	Pixel weight map.

A master frame is the result of integrating two or more individual frames or images of the same type.

A defect map is an integer or floating point real image where nonzero pixel sample values represent invalid or defective pixels. Defective pixels are typically ignored or replaced with plausible statistical estimates, such as robust averages of neighbor pixels.

Pixel rejection maps are integer or floating point real images where each pixel sample value is proportional to the number of rejected pixels in an integration process at the corresponding pixel coordinates. Low and high rejection maps correspond, respectively, to rejected pixels below and above a central reference value (typically a robust location estimate such as the median of a set of integrated pixels).

A rejection map sample value equal to the lower bound of the representable range corresponds to zero rejected pixels, while the upper bound indicates that all integrated pixels have been rejected.

A binary rejection map is an integer image where a pixel sample value is nonzero if and only if the corresponding pixel sample of a given image has been rejected in an integration process. Low and high binary rejection maps must be interpreted as in the preceding paragraph for normal rejection maps. Binary rejection maps should be generated as 8-bit unsigned integer images.

Slope maps are integer or floating point real images where each pixel sample value is proportional to the slope of a straight line fitted to a set of integrated pixels at the corresponding pixel coordinates. A slope map value equal to the lower bound of the representable range corresponds to a horizontal line (or a slope of zero degrees), while the upper bound represents a vertical line (infinite slope).

Weight maps are integer or floating point real images where each pixel sample value is proportional to a statistical weight assigned at the corresponding pixel coordinates. Statistical weights represented by weight maps are typically generated by image calibration, registration, and integration processes but can be produced by any task performing per-pixel evaluations or comparisons.

Function Documentation

Name()

String pcl::ImageType::Name

(

int

type

)

Returns a string with the human-readable name of a frame or image type.

Parameters

type	A supported image type, identified by its corresponding symbolic constant.

ToMaster()

value_type pcl::ImageType::ToMaster ( int  type )

inline

Returns the master frame type corresponding to the specified type.

If type is one of Bias, Dark, Flat or Light, this function returns MasterBias, MasterDark, MasterFlat or MasterLight, respectively. Otherwise the specified type is returned without modification.

Definition at line 169 of file ImageOptions.h.