gray2rgba(image, alpha=None)

Parameters

image : array_like

Input image.

alpha : array_like, optional

Alpha channel of the output image. It may be a scalar or an array that can be broadcast to image . If not specified it is set to the maximum limit corresponding to the image dtype.

Returns

rgba : ndarray

RGBA image. A new dimension of length 4 is added to input image shape.

Create a RGBA representation of a gray-level image.

Examples

See :

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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File: /skimage/color/colorconv.py#821
type: <class 'function'>
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