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ee.Image.rsedTransform
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反向平方歐幾里得距離 (RSED) 會在輸入圖片的每個非零像素上放置反向拋物線，並以像素值做為拋物線的高度，藉此計算出 2D 最大高度表面。以二進位圖片 (零/非零) 來看，這相當於以像素為單位，依據每個非零輸入像素值的平方根緩衝處理。
| 用量 | 傳回 |
|---|
Image.rsedTransform(neighborhood, units) | 圖片 |
| 引數 | 類型 | 詳細資料 |
|---|
這個：image | 圖片 | 輸入圖片。 |
neighborhood | 整數，預設值為 256 | 鄰域大小 (以像素為單位)。 |
units | 字串，預設值為「pixels」 | 鄰域的單位，目前僅支援「像素」。 |
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上次更新時間：2025-07-26 (世界標準時間)。
[null,null,["上次更新時間：2025-07-26 (世界標準時間)。"],[[["\u003cp\u003eRSED generates a height map by placing inverted parabolas over each non-zero pixel in an image, with parabola height corresponding to pixel value.\u003c/p\u003e\n"],["\u003cp\u003eThis transformation effectively buffers non-zero pixels by the square root of their value, creating a smoothed, expanded representation of the original image.\u003c/p\u003e\n"],["\u003cp\u003eIt's implemented through the \u003ccode\u003ersedTransform\u003c/code\u003e method with adjustable neighborhood size, impacting the extent of buffering.\u003c/p\u003e\n"]]],["Reverse Squared Euclidean Distance (RSED) creates a 2D surface by placing inverted parabolas over non-zero pixels in an image, with pixel values determining parabola heights. It's analogous to buffering each non-zero pixel by the square root of its value. The `Image.rsedTransform` function takes an input image and computes the RSED transform. The function requires `neighborhood` size in pixels (default 256) and supports `\"pixels\"` as `units`. It returns the transformed `Image`.\n"],null,["# ee.Image.rsedTransform\n\nReverse Squared Euclidean Distance (RSED) computes the 2D maximal height surface created by placing an inverted parabola over each non-zero pixel of the input image, where the pixel's value is the height of the parabola. Viewed as a binary image (zero/not-zero) this is equivalent to buffering each non-zero input pixel by the square root of its value, in pixels.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|-----------------------------------------------------|---------|\n| Image.rsedTransform`(`*neighborhood* `, `*units*`)` | Image |\n\n| Argument | Type | Details |\n|----------------|---------------------------|-----------------------------------------------------------------------|\n| this: `image` | Image | The input image. |\n| `neighborhood` | Integer, default: 256 | Neighborhood size in pixels. |\n| `units` | String, default: \"pixels\" | The units of the neighborhood, currently only 'pixels' are supported. |"]]
