Earth Engine has introduced noncommercial quota tiers to safeguard shared compute resources and ensure reliable performance for everyone. Noncommercial projects use the Community Tier by default, though you can change a project's tier at any time.

ee.Algorithms.HoughTransform

Applies the Hough transform to an image. For every input band, outputs a band where lines are detected by thresholding the Hough transform with a value of lineThreshold.

The output band is named [input]_lines, where [input] is the name of the original band. The defaults provided for the parameters are intended as a starting point for use with UINT8 images.

Usage	Returns
`ee.Algorithms.HoughTransform(image, gridSize , inputThreshold , lineThreshold , smooth )`	Image

Argument	Type	Details
`image`	Image	The image to which to apply the transform.
`gridSize`	Integer, default: 256	The size of the grid over which to perform the computation.
`inputThreshold`	Float, default: 64	Value threshold for input image. Pixels equal to or above this value are considered active.
`lineThreshold`	Float, default: 72	Threshold for line detection. Values equal to or above this threshold on the Hough transform are considered to be detected lines.
`smooth`	Boolean, default: true	Whether to smooth the Hough transform before line detection.

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Last updated 2026-04-20 UTC.

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