Function to convert the Grayscale data to RGB to match with an architecture

gray_to_rgb.py

from keras import backend as K

def grayscale_to_rgb(images, channel_axis=-1):
	'''Function to convert the Grayscale data
	to RGB to match with an architecture
	'''
    images= K.expand_dims(images, axis=channel_axis)
    tiling = [1] * 4    # 4 dimensions: B, H, W, C
    tiling[channel_axis] *= 3
    images= K.tile(images, tiling)
    return images