DIPlib's data types

Pixel values are represented by different types, called data types. DIPlib supports the data types given in the following table:

The data types can be divided into five classes: the binary, unsigned integer, signed integer, floating point and complex classes. Different data types in the same class (e.g. dip_uint8 and dip_uint16) provide a different range of values they can represent.

The complex data types are defines as follows:

typedef struct                        typedef struct
{                                     {
   dip_sfloat re;                        dip_dfloat re;
   dip_sfloat im;                        dip_dfloat im;
} dip_scomplex;                       } dip_dcomplex;

The binary data types are simply aliases for a set of corresponding unsigned integer types. The reason for having a separate typedef for the binary types is that they are not used like ordinary integers. Each bit of the integer can store one binary value. When manipulating binary data, care must be taken not to change any of the other bits of the integer used for storing it.

The dip_DataType enumeration is used to represent data types symbolically. It is used in dip_Image's to indicate what the data type of the image is. Data type identifiers are used by the type iterator (see tpi.h) and overload schemes (see ovl.h and overload.h). Type suffixes are used to give type specific routines a unique name. Using a standard set of suffixes enables the type iterator and overload schemes to deal with these type specific routines. The dip_DataType enumeration, data type identifiers and suffixes can be found in the table above.

In addition to the data type identifiers for individual data types, there are also defines to represent an entire group. These are given in the following table:

SEE ALSO

DataTypeGetInfo