https://community.intel.com/t5/Intel-Integrated-Performance/ippiTrueDistanceTransform-8u32f-C1R-limitations/m-p/895177#M11973 <P>Empirical studies show that ippiTrueDistanceTransform_8u32f_C1R caps the maximum distance value at 1000.0. Is this an actual limitation to the routine or am I missing something? My expectation would be that the max value would be constrained by the data type (i.e. IPP_MAXABS_32F). Howeve, the value is obviously limited by memory contraints on the allowable image sizes.</P> <P>My test consisted of an nxn image with the center pixel set to zero and the rest filled with ones. With n = 1600, all pixels beyond the 1000 pixel distance to the closest feature pixel are set to 1000.</P> <P>Thanks for any input,</P> <P>Bob</P> Tue, 25 Nov 2008 21:51:12 GMT rwagnerintel 2008-11-25T21:51:12Z https://community.intel.com/t5/Intel-Integrated-Performance/ippiTrueDistanceTransform-8u32f-C1R-limitations/m-p/895177#M11973 <P>Empirical studies show that ippiTrueDistanceTransform_8u32f_C1R caps the maximum distance value at 1000.0. Is this an actual limitation to the routine or am I missing something? My expectation would be that the max value would be constrained by the data type (i.e. IPP_MAXABS_32F). Howeve, the value is obviously limited by memory contraints on the allowable image sizes.</P> <P>My test consisted of an nxn image with the center pixel set to zero and the rest filled with ones. With n = 1600, all pixels beyond the 1000 pixel distance to the closest feature pixel are set to 1000.</P> <P>Thanks for any input,</P> <P>Bob</P> Tue, 25 Nov 2008 21:51:12 GMT https://community.intel.com/t5/Intel-Integrated-Performance/ippiTrueDistanceTransform-8u32f-C1R-limitations/m-p/895177#M11973 rwagnerintel 2008-11-25T21:51:12Z https://community.intel.com/t5/Intel-Integrated-Performance/ippiTrueDistanceTransform-8u32f-C1R-limitations/m-p/895178#M11974 <DIV style="margin:0px;">Hello,</DIV> <DIV style="margin:0px;">it is limitation of algorithm implemented in the function. We will extend limits for image sizes to be processed by this function in the next version of IPP.</DIV> <DIV style="margin:0px;">Regards,<BR /> Vladimir</DIV> <DIV style="margin:0px;"></DIV> <P></P> Tue, 16 Dec 2008 19:12:27 GMT https://community.intel.com/t5/Intel-Integrated-Performance/ippiTrueDistanceTransform-8u32f-C1R-limitations/m-p/895178#M11974 Vladimir_Dudnik 2008-12-16T19:12:27Z