comparison util/sparco utils/thumbPlot.m @ 77:62f20b91d870

add routines from sparco problems privite folder to {root}\util some changes to ksvd vs rlsdla image denoising example
author Ivan <ivan.damnjanovic@eecs.qmul.ac.uk>
date Fri, 25 Mar 2011 14:01:50 +0000
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76:d052ec5b742f 77:62f20b91d870
1 function P = thumbPlot(P,x,y,color)
2
3 % Copyright 2008, Ewout van den Berg and Michael P. Friedlander
4 % http://www.cs.ubc.ca/labs/scl/sparco
5 % $Id: thumbPlot.m 1040 2008-06-26 20:29:02Z ewout78 $
6
7 m = size(P,1);
8 n = size(P,2);
9 if (size(P,3) == 0) & (length(color) == 3)
10 % Convert to gray-scale
11 color = 0.30*color(1) + 0.59*color(2) + 0.11*color(3);
12 end
13
14 mnx = min(x); % Minimum x
15 mxx = max(x); % Maximum x
16 mny = min(y); % Minimum y
17 mxy = max(y); % Maximum y
18 dy = (mxy - mny) * 0.1; % Offset on vertical axis
19 sx = (mxx - mnx) * 1.0; % Scale of horizontal axis
20 sy = (mxy - mny) * 1.2; % Scale of vertical axis
21
22 if (sx < 1e-6), sx = 1; end
23 if (sy < 1e-6), sy = 1; end
24
25 for i=1:length(x)-1
26 x0 = floor(1 + (n-1) * (x(i ) - mnx) / sx);
27 x1 = floor(1 + (n-1) * (x(i+1) - mnx) / sx);
28 y0 = floor( (n-1) * (y(i ) - mny + dy) / sy);
29 y1 = floor( (n-1) * (y(i+1) - mny + dy) / sy);
30
31 samples = 1+2*max(abs(x1-x0)+1,abs(y1-y0)+1);
32 c = linspace(0,1,samples);
33 idx = round((1-c)*x0 + c*x1);
34 idy = n - round((1-c)*y0 + c*y1);
35 for j=1:samples
36 P(idy(j),idx(j),:) = color;
37 end
38 end