You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
48 lines
1.5 KiB
Matlab
48 lines
1.5 KiB
Matlab
function [I,xcent,ycent]=image_popout_circle_bars(gridsize,len,wid,spacing,angle,contrast,backgnd,jitter_pos,jitter_ang,surr_prob,cent_gap)
|
|
%draw a uniform texture with a single element at a different orientation
|
|
%and/or contrast
|
|
if nargin<6, contrast=0.5*ones(size(angle)); end
|
|
if nargin<7, backgnd=0.5; end
|
|
if nargin<8, jitter_pos=0; end
|
|
if nargin<9, jitter_ang=0; end
|
|
if nargin<10, surr_prob=1; end
|
|
if nargin<11, cent_gap=1; end
|
|
|
|
[I,gridsize,xlocations,ylocations]=define_blank_image(gridsize,len,spacing,backgnd);
|
|
circle=define_circle(len*2/3,wid);
|
|
bar=define_bar(len*2/3,wid);
|
|
blank=define_bar(len,wid).*0;
|
|
[a,b]=size(blank);
|
|
diam=size(circle,1);
|
|
circ_bar=draw_bar(blank,ceil(a/2),fix((diam-1)/2)+1,circle,0,1,0);
|
|
circ_bar=draw_bar(circ_bar,ceil(a/2),floor(2*b/3),bar,0,1,0);
|
|
circle=draw_bar(blank,ceil(a/2),fix((diam-1)/2)+1,circle,0,1,0);
|
|
a=0;
|
|
for x=xlocations
|
|
a=a+1;
|
|
b=0;
|
|
for y=ylocations
|
|
b=b+1;
|
|
xval=fix(x+(2*jitter_pos*rand)-jitter_pos);
|
|
yval=fix(y+(2*jitter_pos*rand)-jitter_pos);
|
|
angleval=angle+(2*jitter_ang*rand)-jitter_ang;
|
|
if a==ceil(length(xlocations)/2) & b==ceil(length(ylocations)/2)
|
|
if cent_gap
|
|
I=draw_bar(I,xval,yval,circ_bar,angleval(1),contrast(1),backgnd);
|
|
else
|
|
I=draw_bar(I,xval,yval,circle,angleval(1),contrast(1),backgnd);
|
|
end
|
|
xcent=x;
|
|
ycent=y;
|
|
else
|
|
if rand<=surr_prob
|
|
if cent_gap
|
|
I=draw_bar(I,xval,yval,circle,angleval(2),contrast(2),backgnd);
|
|
else
|
|
I=draw_bar(I,xval,yval,circ_bar,angleval(2),contrast(2),backgnd);
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|