iron.kernels.vision Namespace Reference

Functions
ExternalFunction	_color_convert_kernel (str func_name, str filename, int in_size, int out_size, bool use_chess=False)
ExternalFunction	_bitwise_kernel (str op, int line_width, dtype, bool use_chess=False)
ExternalFunction	rgba2hue (int line_width=1920, bool use_chess=False)
ExternalFunction	threshold (int line_width=1920, dtype=np.uint8, bool use_chess=False)
ExternalFunction	bitwise_or (int line_width=1920, dtype=np.uint8, bool use_chess=False)
ExternalFunction	bitwise_and (int line_width=1920, dtype=np.uint8, bool use_chess=False)
ExternalFunction	gray2rgba (int line_width=1920, bool use_chess=False)
ExternalFunction	rgba2gray (int line_width=1920, bool use_chess=False)
ExternalFunction	filter2d (int line_width=1920, bool use_chess=False)
ExternalFunction	add_weighted (int line_width=1920, dtype=np.uint8, bool use_chess=False)

Detailed Description

Vision kernel factories: color conversion, threshold, filter2d, add_weighted.

Function Documentation

_bitwise_kernel()

ExternalFunction iron.kernels.vision._bitwise_kernel ( str  op, int  line_width,   dtype, bool   use_chess = False  )

protected

Shared implementation for :func:`bitwise_or` and :func:`bitwise_and`.

_color_convert_kernel()

ExternalFunction iron.kernels.vision._color_convert_kernel ( str  func_name, str  filename, int  in_size, int  out_size, bool   use_chess = False  )

protected

Shared implementation for color-space conversion line kernels.

add_weighted()

ExternalFunction iron.kernels.vision.add_weighted	(	int	line_width = 1920,
			dtype = np.uint8,
		bool	use_chess = False
	)

Weighted addition of two lines with a gamma offset.

Args:
    line_width: Number of elements per line.
    dtype: Element data type (``np.uint8``, ``np.int16``, or ``np.int32``).
    use_chess: When ``True``, build the .o with ``xchesscc_wrapper``
        instead of Peano.

Raises:
    ValueError: When ``dtype`` is not ``np.uint8``, ``np.int16``, or ``np.int32``.

bitwise_and()

ExternalFunction iron.kernels.vision.bitwise_and	(	int	line_width = 1920,
			dtype = np.uint8,
		bool	use_chess = False
	)

Element-wise bitwise AND of two lines.

bitwise_or()

ExternalFunction iron.kernels.vision.bitwise_or	(	int	line_width = 1920,
			dtype = np.uint8,
		bool	use_chess = False
	)

Element-wise bitwise OR of two lines.

filter2d()

ExternalFunction iron.kernels.vision.filter2d	(	int	line_width = 1920,
		bool	use_chess = False
	)

Applies a 3x3 2D convolution filter across three input lines.

gray2rgba()

ExternalFunction iron.kernels.vision.gray2rgba	(	int	line_width = 1920,
		bool	use_chess = False
	)

Converts a grayscale line to RGBA.

rgba2gray()

ExternalFunction iron.kernels.vision.rgba2gray	(	int	line_width = 1920,
		bool	use_chess = False
	)

Converts an RGBA line to grayscale.

rgba2hue()

ExternalFunction iron.kernels.vision.rgba2hue	(	int	line_width = 1920,
		bool	use_chess = False
	)

Converts a line of RGBA pixels to hue values.

threshold()

ExternalFunction iron.kernels.vision.threshold	(	int	line_width = 1920,
			dtype = np.uint8,
		bool	use_chess = False
	)

Applies a threshold operation to a line of pixels.

Args:
    line_width: Number of elements per line.
    dtype: Element data type (``np.uint8``, ``np.int16``, or ``np.int32``).
    use_chess: When ``True``, build the .o with ``xchesscc_wrapper``
        instead of Peano.

Raises:
    ValueError: When ``dtype`` is not ``np.uint8``, ``np.int16``, or ``np.int32``.