https://community.intel.com/t5/Intel-Integrated-Performance/color-image-histogram/m-p/858774#M7507 I am using IPP 5.3<BR /><BR />the document of ippi does not give enough information about.<BR /><BR />ippiHistogramEven support multi-channel data, but my understanding is that it computes histogram individually for each channel. Therefore, it is really not a real color histogram. How can I know how many pixels are at color RGB(a,b,c) ? <BR /><BR />Thanks a lot.<BR /> Thu, 22 Jan 2009 22:16:24 GMT Cen_Rao 2009-01-22T22:16:24Z https://community.intel.com/t5/Intel-Integrated-Performance/color-image-histogram/m-p/858774#M7507 I am using IPP 5.3<BR /><BR />the document of ippi does not give enough information about.<BR /><BR />ippiHistogramEven support multi-channel data, but my understanding is that it computes histogram individually for each channel. Therefore, it is really not a real color histogram. How can I know how many pixels are at color RGB(a,b,c) ? <BR /><BR />Thanks a lot.<BR /> Thu, 22 Jan 2009 22:16:24 GMT https://community.intel.com/t5/Intel-Integrated-Performance/color-image-histogram/m-p/858774#M7507 Cen_Rao 2009-01-22T22:16:24Z https://community.intel.com/t5/Intel-Integrated-Performance/color-image-histogram/m-p/858775#M7508 <DIV style="margin:0px;">Documentation of the latest IPP 6.0 says that histogram calculated separately for each channel.<BR /><BR />Vladimir</DIV> <BR /> Fri, 23 Jan 2009 16:55:56 GMT https://community.intel.com/t5/Intel-Integrated-Performance/color-image-histogram/m-p/858775#M7508 Vladimir_Dudnik 2009-01-23T16:55:56Z