showfeatures.m
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上传日期:2018-05-10
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文件大小:1k
- %/////////////////////////////////////////////////////////////////////////////////////////////
- %
- % showfeatures - visualize features generated by detect_features
- % Usage: showfeatures(features,img)
- %
- % Parameters:
- %
- % img : original image
- % features: matrix generated by detect_features
- %
- % Returns: nothing, generates figure
- %
- % Author:
- % Scott Ettinger
- % scott.m.ettinger@intel.com
- %
- % May 2002
- %/////////////////////////////////////////////////////////////////////////////////////////////
- function [] = showfeatures(features,img,num_flag)
- if ~exist('num_flag')
- num_flag = 0;
- end
- figure(gcf);
- imagesc(img)
- hold on
- colormap gray
- for i=1:size(features,1)
- x = features(i,1);
- y = features(i,2);
- sz = features(i,4);
-
- if x>size(img,2)
- x
- end
-
- if features(i,5) > 0 %check edge flag
-
- if num_flag ~= 1
- plot(x,y,'g+'); %draw box around real feature
- else
- text(x,y,sprintf('%d',i),'color','m');
- end
-
- if abs(features(i,7))>1.8
- drawbox(0,sz,x,y,[0 0 1]);
- else
- drawbox(0,sz,x,y,[0 .9 .2]);
- end
- else %draw as edge
-
- ang = features(i,6);
- px = [x-sz*cos(ang) x+sz*cos(ang)];
- py = [y-sz*sin(ang) y+sz*sin(ang)];
- plot(px,py,'r');
- end
- end
- hold off;