topic Project Raster Problem in Data Management Questions https://community.esri.com/t5/data-management-questions/project-raster-problem/m-p/370216#M21029 <HTML><HEAD></HEAD><BODY><SPAN>When reprojecting images the output images are left with a black border or lines at the image edge.(Screenshot attached.)&nbsp; </SPAN><BR /><BR /><SPAN>I am projecting from a "NAD 1983 StatePlane New Jersey FIPS 2900 (US Feet).prj" into a "WGS_1984_Web_Mercator_Auxiliary_Sphere.prj".</SPAN><BR /><BR /><SPAN>These lines exist on the source images as NoData.&nbsp; However it seems the re projection is assigning them actual values (1 or 0 as the input and output images are .tif images in G4 compression) instead of leaving them as NoData or assigning them the background value.&nbsp; </SPAN><BR /><BR /><SPAN>What is the best way to stop this from happening?</SPAN><BR /><BR /><SPAN>Or possibly force the transformation to assign the Nodata values to the background value instead of the displayed value??</SPAN><BR /><BR /><SPAN>Any help would be appreciated.</SPAN></BODY></HTML> Fri, 18 Feb 2011 17:30:11 GMT AdamYesaitis 2011-02-18T17:30:11Z Project Raster Problem https://community.esri.com/t5/data-management-questions/project-raster-problem/m-p/370216#M21029 <HTML><HEAD></HEAD><BODY><SPAN>When reprojecting images the output images are left with a black border or lines at the image edge.(Screenshot attached.)&nbsp; </SPAN><BR /><BR /><SPAN>I am projecting from a "NAD 1983 StatePlane New Jersey FIPS 2900 (US Feet).prj" into a "WGS_1984_Web_Mercator_Auxiliary_Sphere.prj".</SPAN><BR /><BR /><SPAN>These lines exist on the source images as NoData.&nbsp; However it seems the re projection is assigning them actual values (1 or 0 as the input and output images are .tif images in G4 compression) instead of leaving them as NoData or assigning them the background value.&nbsp; </SPAN><BR /><BR /><SPAN>What is the best way to stop this from happening?</SPAN><BR /><BR /><SPAN>Or possibly force the transformation to assign the Nodata values to the background value instead of the displayed value??</SPAN><BR /><BR /><SPAN>Any help would be appreciated.</SPAN></BODY></HTML> Fri, 18 Feb 2011 17:30:11 GMT https://community.esri.com/t5/data-management-questions/project-raster-problem/m-p/370216#M21029 AdamYesaitis 2011-02-18T17:30:11Z Re: Project Raster Problem https://community.esri.com/t5/data-management-questions/project-raster-problem/m-p/370217#M21030 <HTML><HEAD></HEAD><BODY><SPAN>I am having the same problems when reprojecting satellite imagery using the Project Raster Tool.</SPAN><BR /><SPAN>I have found that the edge pixels (black lines) in the projected imagery display in ArcMap, even when I symbolize the image tiles to Display the background value (0,0,0) as No Color.&nbsp; The problem goes away when you zoom in to scales of &lt; 1:5000 in my imagery, and appears if I am zoomed to scales of &gt;= 1:5000.&nbsp; This led me to believe that the problem is related to the Pyramids that are built automatically when you use the Project Raster tool.&nbsp; Pyramids are used for image display performance.&nbsp; If you remove the Pyramids, the issue goes away and the imagery displays fine - no black lines on the edges of the image tiles.&nbsp; To do this, open your Windows Explorer and look for a .rrd file for each projected image. (For example Image1.rrd, etc) Either delete the .rrd files, or move them to another folder to test my theory.&nbsp; In my case,.I really do not want to delete the Pyramids, because they speed up the display of the imagery.&nbsp; So I need a solution that allows me to keep the Pyramids, but not have the black edge pixel problem</SPAN></BODY></HTML> Fri, 18 Feb 2011 22:45:52 GMT https://community.esri.com/t5/data-management-questions/project-raster-problem/m-p/370217#M21030 marianneestrada 2011-02-18T22:45:52Z