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craftutils.observation.field.make_lupton_rgb(image_r, image_g, image_b, minimum=
0, stretch=5, Q=8, filename=None) Return a Red/Green/Blue color image from up to 3 images using an asinh stretch. The input images can be int or float, and in any range or bit-depth.
For a more detailed look at the use of this method, see the document Creating color RGB images.
Parameters¶
- image_rndarray
Image to map to red.
- image_gndarray
Image to map to green.
- image_bndarray
Image to map to blue.
- minimumfloat
Intensity that should be mapped to black (a scalar or array for R, G, B).
- stretchfloat
The linear stretch of the image.
- Qfloat
The asinh softening parameter.
- filenamestr
Write the resulting RGB image to a file (file type determined from extension).
Returns¶
- rgbndarray
RGB (integer, 8-bits per channel) color image as an NxNx3 numpy array.