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ee.Algorithms.HoughTransform
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将 Hough 转换应用于图像。对于每个输入频段，输出一个频段，其中通过对 Hough 转换进行阈值处理（阈值为 lineThreshold）来检测直线。输出波段的名称为 [输入]_lines，其中 [输入] 是原始波段的名称。为参数提供的默认值旨在作为使用 UINT8 映像的起点。
| 用法 | 返回 |
|---|
ee.Algorithms.HoughTransform(image, gridSize, inputThreshold, lineThreshold, smooth) | 图片 |
| 参数 | 类型 | 详细信息 |
|---|
image | 图片 | 要应用转换的图片。 |
gridSize | 整数，默认值：256 | 要执行计算的网格的大小。 |
inputThreshold | 浮点数，默认值：64 | 输入图片的价值阈值。等于或高于此值的像素被视为有效像素。 |
lineThreshold | 浮点数，默认值：72 | 用于检测直线的阈值。Hough 转换中等于或高于此阈值的值被视为检测到的直线。 |
smooth | 布尔值，默认值：true | 是否在检测直线之前平滑 Hough 转换。 |
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最后更新时间 (UTC)：2025-07-26。
[null,null,["最后更新时间 (UTC)：2025-07-26。"],[[["\u003cp\u003eDetects lines in an image by applying the Hough transform and thresholding the results.\u003c/p\u003e\n"],["\u003cp\u003eOutputs a new band for each input band, highlighting detected lines, named "[input]_lines".\u003c/p\u003e\n"],["\u003cp\u003eCustomizable parameters include grid size, input and line thresholds, and smoothing for the Hough transform.\u003c/p\u003e\n"],["\u003cp\u003eDefault parameter values are optimized for 8-bit unsigned integer images.\u003c/p\u003e\n"],["\u003cp\u003eUsers can adjust these parameters to fine-tune line detection for their specific images and use cases.\u003c/p\u003e\n"]]],["The Hough transform detects lines in an image. It takes an image as input and outputs a new image with detected lines for each band, named `[input]_lines`. Key actions include thresholding the input image based on `inputThreshold` to identify active pixels and then thresholding the Hough transform output with `lineThreshold` to detect lines. `gridSize` controls the computation grid, and `smooth` enables smoothing before line detection. Defaults are provided for UINT8 images.\n"],null,["# ee.Algorithms.HoughTransform\n\nApplies 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.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|-----------------------------------------------------------------------------------------------------------|---------|\n| `ee.Algorithms.HoughTransform(image, `*gridSize* `, `*inputThreshold* `, `*lineThreshold* `, `*smooth*`)` | Image |\n\n| Argument | Type | Details |\n|------------------|------------------------|-----------------------------------------------------------------------------------------------------------------------------------|\n| `image` | Image | The image to which to apply the transform. |\n| `gridSize` | Integer, default: 256 | The size of the grid over which to perform the computation. |\n| `inputThreshold` | Float, default: 64 | Value threshold for input image. Pixels equal to or above this value are considered active. |\n| `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. |\n| `smooth` | Boolean, default: true | Whether to smooth the Hough transform before line detection. |"]]
