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dev_set_lut🔗

Short description🔗

dev_set_lut — Set “look-up-table” (lut).

Signature🔗

dev_set_lut( filename.read LutName )

Description🔗

dev_set_lut sets the look-up-table of the active graphics window. A look-up-table defines the transformation of a “gray value” from an one-channel-image into a gray value or color on the screen. query_lut lists the names of all look-up-tables.

For more information see the description of the operator set_lut. However, in contrast to that operator the new look-up-table is also used for all new graphics windows that are opened afterwards.

Attention🔗

Using the code export feature of HDevelop, the code that is generated for this operator may have a different behavior than the related HALCON operator. For a detailed description of the code export of HDevelop graphics operators into the different programming languages see in the “HDevelop User's Guide” the chapter Code Export -> General Aspects of Code Generation -> Graphics Windows.

Parameters🔗

LutName (input_control) filename.read(-array) → (string / real / integer)

Name of look-up-table, values of look-up-table (RGB) or file name.

Default: 'default'
Suggested values: 'default', 'linear', 'inverse', 'sqr', 'inv_sqr', 'cube', 'inv_cube', 'sqrt', 'inv_sqrt', 'cubic_root', 'inv_cubic_root', 'color1', 'color2', 'color3', 'color4', 'three', 'six', 'twelve', 'twenty_four', 'rainbow', 'temperature', 'cyclic_gray', 'cyclic_temperature', 'hsi', 'change1', 'change2', 'change3', 'jet', 'inverse_jet', 'batlow', 'inverse_batlow'
File extension: .lut

Example🔗

(HDevelop)

read_image(Image,'mreut')
dev_set_lut('inverse')
* For true color only:
dev_display(Image)

Result🔗

If the values of the specified parameters are correct, dev_set_lut returns 2 (H_MSG_TRUE). Otherwise, an exception is raised and an error code returned.

Combinations with other operators🔗

Combinations

Possible successors

dev_display

See also

set_lut

Module🔗

Foundation