https://community.intel.com/t5/Intel-Integrated-Performance/Help-me-please/m-p/908454#M13842 <P>Hello, there is convention in IPP to treat alpha channel as the last channel in image, so you need to convert your data to RGBA format in order to be able to process them with AC4 IPP functions</P> <P>Regards,<BR /> Vladimir</P> Thu, 12 Oct 2006 17:43:17 GMT Vladimir_Dudnik 2006-10-12T17:43:17Z https://community.intel.com/t5/Intel-Integrated-Performance/Help-me-please/m-p/908453#M13841 <P>Hello all</P> <P>I have question about <FONT size="2">ippiConvValid</FONT></P> <P><FONT size="2"><FONT size="3">Which</FONT> function i must use if i have bmp (32bit ARGB and alfa chanellnot use (is NULL))</FONT></P> <P><FONT size="2"><STRONG>ippiConvValid_32f_C1R<BR />ippiConvValid_32f_C3R<BR />ippiConvValid_32f_AC4R<BR /></STRONG> </FONT></P> <P><FONT size="2"></FONT></P> <P><FONT size="2"></FONT></P> Fri, 29 Sep 2006 20:07:41 GMT https://community.intel.com/t5/Intel-Integrated-Performance/Help-me-please/m-p/908453#M13841 sadan_job 2006-09-29T20:07:41Z https://community.intel.com/t5/Intel-Integrated-Performance/Help-me-please/m-p/908454#M13842 <P>Hello, there is convention in IPP to treat alpha channel as the last channel in image, so you need to convert your data to RGBA format in order to be able to process them with AC4 IPP functions</P> <P>Regards,<BR /> Vladimir</P> Thu, 12 Oct 2006 17:43:17 GMT https://community.intel.com/t5/Intel-Integrated-Performance/Help-me-please/m-p/908454#M13842 Vladimir_Dudnik 2006-10-12T17:43:17Z