topic Exclude multiple nodata points from raster in ArcGis. in ArcMap Questions https://community.esri.com/t5/arcmap-questions/exclude-multiple-nodata-points-from-raster-in/m-p/1365502#M4725 <P><SPAN>I brought in the ECW raster file captured by the drone into ArcMap and performed georeferencing using ArcGIS Online imagery. Initially, I designated the white background in my raster file as no data by assigning the RGB values of 255,255,255. However, I discovered later that the background comprises various colors, including 254,255,253. How can I exclude both the previously designated color and this newly identified color to enhance the cleanliness of my image?</SPAN></P><P><SPAN><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Screenshot 2024-01-02 165222.png" style="width: 999px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/90308iCFDFB78D97756442/image-size/large?v=v2&amp;px=999" role="button" title="Screenshot 2024-01-02 165222.png" alt="Screenshot 2024-01-02 165222.png" /></span></SPAN></P> Tue, 02 Jan 2024 18:44:42 GMT UMARARSHAD 2024-01-02T18:44:42Z Exclude multiple nodata points from raster in ArcGis. https://community.esri.com/t5/arcmap-questions/exclude-multiple-nodata-points-from-raster-in/m-p/1365502#M4725 <P><SPAN>I brought in the ECW raster file captured by the drone into ArcMap and performed georeferencing using ArcGIS Online imagery. Initially, I designated the white background in my raster file as no data by assigning the RGB values of 255,255,255. However, I discovered later that the background comprises various colors, including 254,255,253. How can I exclude both the previously designated color and this newly identified color to enhance the cleanliness of my image?</SPAN></P><P><SPAN><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Screenshot 2024-01-02 165222.png" style="width: 999px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/90308iCFDFB78D97756442/image-size/large?v=v2&amp;px=999" role="button" title="Screenshot 2024-01-02 165222.png" alt="Screenshot 2024-01-02 165222.png" /></span></SPAN></P> Tue, 02 Jan 2024 18:44:42 GMT https://community.esri.com/t5/arcmap-questions/exclude-multiple-nodata-points-from-raster-in/m-p/1365502#M4725 UMARARSHAD 2024-01-02T18:44:42Z