label2rgb

label2rgb

skimage.color.label2rgb(label, image=None, colors=None, alpha=0.3, bg_label=-1, bg_color=(0, 0, 0), image_alpha=1, kind='overlay') [source]

Return an RGB image where color-coded labels are painted over the image.

Parameters:

label : array, shape (M, N) Integer array of labels with the same shape as image. image : array, shape (M, N, 3), optional Image used as underlay for labels. If the input is an RGB image, it’s converted to grayscale before coloring. colors : list, optional List of colors. If the number of labels exceeds the number of colors, then the colors are cycled. alpha : float [0, 1], optional Opacity of colorized labels. Ignored if image is None. bg_label : int, optional Label that’s treated as the background. bg_color : str or array, optional Background color. Must be a name in color_dict or RGB float values between [0, 1]. image_alpha : float [0, 1], optional Opacity of the image. kind : string, one of {‘overlay’, ‘avg’} The kind of color image desired. ‘overlay’ cycles over defined colors and overlays the colored labels over the original image. ‘avg’ replaces each labeled segment with its average color, for a stained-class or pastel painting appearance.

Returns:

result : array of float, shape (M, N, 3) The result of blending a cycling colormap (colors) for each distinct value in label with the image, at a certain alpha value.