get_mean_raw_contrast
- hcipy.metrics.get_mean_raw_contrast(img, mask, ref_img)
- Get the mean raw contrast in a masked region of interest. - Parameters:
- imgField or array_like
- The focal-plane image. 
- maskField or array_like
- A binary array describing the region of interest. 
- img_refField or array_like
- A reference focal-plane image without aberrations. This is used to determine the Strehl ratio. 
 
- Returns:
- scalar
- The mean raw contrast in the region of interest.