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ee.Image.eq
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如果 image1 和 image2 中每个匹配的波段对的第一个值等于第二个值，则返回 1。如果 image1 或 image2 只有一个波段，则会将其与另一张图片中的所有波段进行比较。如果图片具有相同数量的波段，但名称不同，则会按自然顺序成对使用。输出波段的命名方式为：如果两个输入的长度不同，则以较长的输入命名；如果长度相同，则以 image1 的顺序命名。输出像素的类型为布尔值。
| 参数 | 类型 | 详细信息 |
|---|
此：image1 | 图片 | 从中获取左操作数波段的映像。 |
image2 | 图片 | 从中获取右操作数波段的映像。 |
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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\u003eCompares corresponding bands in two images for equality, returning 1 if they match and 0 otherwise.\u003c/p\u003e\n"],["\u003cp\u003eHandles single-band images by comparing against all bands of the other image.\u003c/p\u003e\n"],["\u003cp\u003eOutput image bands are named based on the input image with more bands, or \u003ccode\u003eimage1\u003c/code\u003e's order if band counts are equal.\u003c/p\u003e\n"],["\u003cp\u003eResulting image has boolean pixel type indicating equality (1) or inequality (0) for each band comparison.\u003c/p\u003e\n"]]],["The `eq()` function compares two images (`image1` and `image2`) band-by-band for equality. It returns an image where each pixel is `true` if the corresponding bands are equal, otherwise `false`. If one image has a single band, it's compared to all bands of the other. Bands are paired by name if possible or by natural order if band names differ and band counts are identical. Output band names are based on the longer input image, and the output pixel type is boolean.\n"],null,["# ee.Image.eq\n\nReturns 1 if and only if the first value is equal to the second for each matched pair of bands in image1 and image2. If either image1 or image2 has only 1 band, then it is used against all the bands in the other image. If the images have the same number of bands, but not the same names, they're used pairwise in the natural order. The output bands are named for the longer of the two inputs, or if they're equal in length, in image1's order. The type of the output pixels is boolean.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|--------------------|---------|\n| Image.eq`(image2)` | Image |\n\n| Argument | Type | Details |\n|----------------|-------|---------------------------------------------------------|\n| this: `image1` | Image | The image from which the left operand bands are taken. |\n| `image2` | Image | The image from which the right operand bands are taken. |"]]
