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Previous: Mathematical Operations on Two Rasters
备受期待的RasterConvolver终于到了!对FME 2018.1不熟悉,the RasterConvolver is a transformer that applies a convolution filter to raster data.Convolution filters are applied using a kernel which is specified by a matrix of weights for the neighboring values.Filtering can be used to smooth,锐化,enhance edges and other raster image manipulation operations.
在这种情况下,you are interested in applying a convolution filter in order to sharpen a GeoTIFF image.有关使用光栅卷积器进行光栅处理的更多信息,查看Edge Detection with the RasterConvolverarticle or the光栅斜率计算作为光栅卷积器示例article.
The RasterConvolver accepts input features containing a raster geometry and outputs the features after applying a convolution filter to each band.
Note: By default,the preserve band interpretation is set to No - leaving this as No would convert the Red,绿色,and Blue bands从geotiff到real64(即转换为灰度图像)。
Data used in this tutorial originates from open data made available by the温哥华市,British Columbia.It contains information licensed under the Open Government License - Vancouver.
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