INNER CODE UNIT · Python

transformed_color

NVlabs/instant-ngp · scripts/flip/__init__.py:44

        transformed_color = np.where(input_color > limit, np.power((input_color + 0.055) / 1.055, 2.4), input_color / 12.92)

    elif fromSpace2toSpace == "linrgb2srgb":
        limit = 0.0031308
        transformed_color = np.where(input_color > limit, 1.055 * (input_color ** (1.0 / 2.4)) - 0.055, 12.92 * input_color)

    elif fromSpace2toSpace == "linrgb2xyz" or fromSpace2toSpace == "xyz2linrgb":
        # Source: https://www.image-engineering.de/library/technotes/958-how-to-convert-between-srgb-and-ciexyz
        # Assumes D65 standard illuminant
        a11 = 10135552 / 24577794
        a12 = 8788810  / 24577794
        a13 = 4435075  / 24577794
        a21 = 2613072  / 12288897
        a22 = 8788810  / 12288897
        a23 = 887015   / 12288897
        a31 = 1425312  / 73733382
        a32 = 8788810  / 73733382
        a33 = 70074185 / 73733382

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