machinevisiontoolbox.Image.anaglyph

Image.anaglyph(right, colors='rc', disp=0)

Convert stereo images to an anaglyph image

Parameters:

• right (Image instance) – right image

• colors (str, optional) – lens colors (left, right), defaults to ‘rc’

• disp (int, optional) – disparity, defaults to 0

Raises:

ValueErrror – images are not the same size

Returns:

anaglyph image

Return type:

Image

Returns an anaglyph image which combines the two images of a stereo pair by coding them in two different colors. By default the left image is red, and the right image is cyan.

colors describes the lens color coding as a string with 2 letters, the first for left, the second for right, and each is one of:

code	color
‘r’	red
‘g’	green
‘b’	green
‘c’	cyan
‘m’	magenta

If disp is positive the disparity is increased by shifting the right image to the right. If negative disparity is reduced by shifting the right image to the left. These adjustments are achieved by trimming the images. Use this option to make the images more natural/comfortable to view, useful if the images were captured with a stereo baseline significantly different to the human eye separation (typically 65mm).

Example:

>>> from machinevisiontoolbox import Image
>>> left = Image.Read("rocks2-l.png", reduce=2)
>>> right = Image.Read("rocks2-r.png", reduce=2)
>>> left.anaglyph(right).disp()
<matplotlib.image.AxesImage object at 0x7fcf827ea550>

(Source code, png, hires.png, pdf)

Reference:

• Robotics, Vision & Control for Python, Section 14.4, P. Corke, Springer 2023.

Seealso:

stdisp Overlay