keras-team/keras · error · ValueError

Invalid images dtype: expected float dtype. Received: images

Error message

Invalid images dtype: expected float dtype. Received: images.dtype={dtype}

What it means

Error "Invalid images dtype: expected float dtype. Received: images.dtype={dtype}" thrown in keras-team/keras.

Source

Thrown at keras/src/backend/openvino/image.py:106

            grayscales = ov_opset.convert(grayscales, original_type).output(0)

    return OpenVINOKerasTensor(grayscales)


def rgb_to_hsv(images, data_format=None):
    dtype = images.dtype
    images = get_ov_output(images)
    ov_type = images.get_element_type()
    data_format = backend.standardize_data_format(data_format)
    channels_axis = -1 if data_format == "channels_last" else -3
    if len(images.shape) not in (3, 4):
        raise ValueError(
            "Invalid images rank: expected rank 3 (single image) "
            "or rank 4 (batch of images). Received input with shape: "
            f"images.shape={images.shape}"
        )
    if not backend.is_float_dtype(dtype):
        raise ValueError(
            "Invalid images dtype: expected float dtype. "
            f"Received: images.dtype={dtype}"
        )
    eps = ov_opset.constant(backend.epsilon(), dtype=ov_type).output(0)
    images = ov_opset.select(
        ov_opset.less(ov_opset.abs(images), eps),
        ov_opset.constant(0.0, dtype=ov_type),
        images,
    ).output(0)
    rgb_channels = ov_opset.split(images, axis=channels_axis, num_splits=3)
    r, g, b = (
        rgb_channels.output(0),
        rgb_channels.output(1),
        rgb_channels.output(2),
    )

    def rgb_planes_to_hsv_planes(r, g, b):
        value = ov_opset.maximum(ov_opset.maximum(r, g), b).output(0)

View on GitHub (pinned to 7a34a03db6)

When it happens

Trigger: Thrown at keras/src/backend/openvino/image.py:106 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of keras-team/keras@7a34a03db6 (2026-08-25). Data as JSON: /api/errors/1d81b46ad1203610. Report an issue: GitHub.