Image.Sin

classmethod Image.Sin(cycles: int = 2, dir: str = 'x', *, size: int | Sequence[int] | None = None, dtype: Dtype | None = None, colororder: str | None = None, like=None) → Self

Create image of sinusoidal intensity pattern

Parameters:

• dir (str, optional) – sinusoid direction: ‘x’ [default] or ‘y’

• size (int or 2-tuple, optional) – image size, width x height, defaults to 256x256

• cycles (int, optional) – Number of complete cycles, defaults to 2

• dtype (str or NumPy dtype, optional) – NumPy datatype, defaults to ‘float32’

• colororder (str or None, optional) – color plane names for the output image, defaults to None

• like (Image or None, optional) – template image supplying default size, dtype and colororder when those are not given explicitly

Returns:

sinusoidal pattern

Return type:

Image

The sinusoids are offset to have a minimum value of zero, and span the range:

• float image: 0 to 1

• int image: 0 to maximum positive value of the integer type

Example:

>>> from machinevisiontoolbox import Image
>>> Image.Sin(cycles=2, size=10).print()
   0.50 0.98 0.79 0.21 0.02 0.50 0.98 0.79 0.21 0.02
   0.50 0.98 0.79 0.21 0.02 0.50 0.98 0.79 0.21 0.02
   0.50 0.98 0.79 0.21 0.02 0.50 0.98 0.79 0.21 0.02
   0.50 0.98 0.79 0.21 0.02 0.50 0.98 0.79 0.21 0.02
   0.50 0.98 0.79 0.21 0.02 0.50 0.98 0.79 0.21 0.02
   0.50 0.98 0.79 0.21 0.02 0.50 0.98 0.79 0.21 0.02
   0.50 0.98 0.79 0.21 0.02 0.50 0.98 0.79 0.21 0.02
   0.50 0.98 0.79 0.21 0.02 0.50 0.98 0.79 0.21 0.02
   0.50 0.98 0.79 0.21 0.02 0.50 0.98 0.79 0.21 0.02
   0.50 0.98 0.79 0.21 0.02 0.50 0.98 0.79 0.21 0.02
>>> Image.Sin(cycles=2, size=10, dtype='uint8').print()
   127 248 202  52   6 127 248 202  52   6
   127 248 202  52   6 127 248 202  52   6
   127 248 202  52   6 127 248 202  52   6
   127 248 202  52   6 127 248 202  52   6
   127 248 202  52   6 127 248 202  52   6
   127 248 202  52   6 127 248 202  52   6
   127 248 202  52   6 127 248 202  52   6
   127 248 202  52   6 127 248 202  52   6
   127 248 202  52   6 127 248 202  52   6
   127 248 202  52   6 127 248 202  52   6

cycles equal to 1, 4 and 18:

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