validate_reference_image_pixels

brainglobe_atlasapi.atlas_generation.validate_atlases.validate_reference_image_pixels(atlas: BrainGlobeAtlas)

Validate that the reference image was correctly rescaled.

This check aims to catch issues where a float64 reference image (e.g., from MRI) might have been incorrectly rescaled or cast to the target integer data type (e.g., REFERENCE_DTYPE), resulting in pixel values that are too low. It asserts that not all pixel values are below 128 (assuming 8-bit range).

Parameters:

atlas (BrainGlobeAtlas) – The BrainGlobeAtlas object to validate.

Returns:

True if the reference image’s pixel values appear to be correctly scaled.

Return type:

bool

Raises:

AssertionError – If all pixel values in the reference image are less than 128, suggesting incorrect scaling.