"python main.py --dataset spade_celebA --segmap_ch 3 --phase" random saved image is dark

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I run python main.py --dataset spade_celebA --segmap_ch 3 --phase, but the sved image is dark. something is wrong.

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I changed related codes as following:from PIL import Image def inverse_transform(images): var = (images+1.) / 2 var[var < 0] = 0 var[var > 1] = 1 var = var * 255 return var

def imsave(images, size, path): img = merge(images, size) return img.save(path)

def merge(images, size): h, w = images.shape[1], images.shape[2] c = images.shape[3] img = np.zeros((h * size[0], w * size[1], c)) for idx, image in enumerate(images): i = idx % size[1] j = idx // size[1] img[hj:h(j+1), wi:w(i+1), :] = image

return Image.fromarray(img.astype('uint8'))

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generated images are as following:

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the result is not very good. is this the best SPADE can achieve on human face?