skimage 0.17.2

NotesParametersRaisesReturnsBackRef
rgb2lab(rgb, illuminant='D65', observer='2')

Notes

This function uses rgb2xyz and xyz2lab. By default Observer= 2A, Illuminant= D65. CIE XYZ tristimulus values x_ref=95.047, y_ref=100., z_ref=108.883. See function get_xyz_coords for a list of supported illuminants.

Parameters

rgb : (..., 3) array_like

The image in RGB format. Final dimension denotes channels.

illuminant : {"A", "D50", "D55", "D65", "D75", "E"}, optional

The name of the illuminant (the function is NOT case sensitive).

observer : {"2", "10"}, optional

The aperture angle of the observer.

Raises

ValueError

If :None:None:`rgb` is not at least 2-D with shape (..., 3).

Returns

out : (..., 3) ndarray

The image in Lab format. Same dimensions as input.

RGB to lab color space conversion.

Examples

See :

Back References

The following pages refer to to this document either explicitly or contain code examples using this.

skimage.color.colorconv.lch2lab skimage.color.colorconv.lab2lch

Local connectivity graph

Hover to see nodes names; edges to Self not shown, Caped at 50 nodes.

Using a canvas is more power efficient and can get hundred of nodes ; but does not allow hyperlinks; , arrows or text (beyond on hover)

SVG is more flexible but power hungry; and does not scale well to 50 + nodes.

All aboves nodes referred to, (or are referred from) current nodes; Edges from Self to other have been omitted (or all nodes would be connected to the central node "self" which is not useful). Nodes are colored by the library they belong to, and scaled with the number of references pointing them


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