median.cpp
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00024 #include <filters/median.h>
00025
00026 #include <core/exception.h>
00027 #include <ippi.h>
00028
00029 namespace firevision {
00030 #if 0
00031 }
00032 #endif
00033
00034
00035
00036
00037
00038
00039
00040
00041
00042 FilterMedian::FilterMedian(unsigned int mask_size)
00043 : Filter("FilterMedian")
00044 {
00045 this->mask_size = mask_size;
00046 }
00047
00048
00049 void
00050 FilterMedian::apply()
00051 {
00052 IppiSize size;
00053 size.width = src_roi[0]->width - mask_size;
00054 size.height = src_roi[0]->height - mask_size;
00055
00056 IppiSize mask = { mask_size, mask_size };
00057 IppiPoint anchor = { (mask_size + 1) / 2, (mask_size + 1) / 2 };
00058
00059 IppStatus status;
00060
00061
00062 status = ippiFilterMedian_8u_C1R( src[0] + ((src_roi[0]->start.y + (mask_size + 1) / 2) * src_roi[0]->line_step) + ((src_roi[0]->start.x + ( mask_size + 1) / 2) * src_roi[0]->pixel_step), src_roi[0]->line_step,
00063 dst + ((dst_roi->start.y + (mask_size + 1) / 2) * dst_roi->line_step) + ((dst_roi->start.x + ( mask_size + 1) / 2) * dst_roi->pixel_step), dst_roi->line_step,
00064 size, mask, anchor );
00065
00066 if ( status != ippStsNoErr ) {
00067 throw fawkes::Exception("Median filter failed with %i\n", status);
00068 }
00069
00070 }
00071
00072 }